WO2011054151A1 - Control system for brushless dc fan - Google Patents

Control system for brushless dc fan Download PDF

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Publication number
WO2011054151A1
WO2011054151A1 PCT/CN2009/074844 CN2009074844W WO2011054151A1 WO 2011054151 A1 WO2011054151 A1 WO 2011054151A1 CN 2009074844 W CN2009074844 W CN 2009074844W WO 2011054151 A1 WO2011054151 A1 WO 2011054151A1
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WO
WIPO (PCT)
Prior art keywords
brushless
motor
microcontroller
module
control system
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Application number
PCT/CN2009/074844
Other languages
French (fr)
Chinese (zh)
Inventor
涂柏生
钟伟
郑广飞
Original Assignee
深圳市博巨兴实业发展有限公司
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Application filed by 深圳市博巨兴实业发展有限公司 filed Critical 深圳市博巨兴实业发展有限公司
Priority to PCT/CN2009/074844 priority Critical patent/WO2011054151A1/en
Publication of WO2011054151A1 publication Critical patent/WO2011054151A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
    • H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/28—Arrangements for controlling current

Definitions

  • the present invention relates to an electric fan control system, and more particularly to a brushless DC electric fan control system
  • the technical solution adopted by the present invention to solve the technical problem is: constructing a brushless DC electric fan control system for controlling a brushless DC motor that drives a fan, including a microcontroller for rectifying an alternating current The bridge rectifier circuit filtered into a direct current, further comprising: a voltage regulating module connected to the output end of the microcontroller for adjusting the driving voltage of the DC motor outputted by the bridge rectifier circuit to control the speed of the brushless DC motor, a MOS tube driving module connected to the output end of the microcontroller for controlling the conduction of the corresponding MOS tube to drive the brushless DC motor to be energized, and connected to the input port of the microcontroller The back electromotive force of the brushless DC motor is collected and transmitted to the back EMF detection module of the microcontroller.
  • the brushless DC fan control system of the present invention further includes a switch electrically connected to an output end of the bridge rectifier circuit for reducing a DC voltage outputted by the bridge rectifier circuit to supply power to the MOS tube drive module. Power module.
  • the brushless DC fan control system of the present invention further includes a three-terminal regulator connected to the output end of the switching power supply module for reducing the DC voltage output by the switching power supply module to supply power to the microcontroller. .
  • the brushless DC fan control system of the present invention further includes a current sampling module connected to the input end of the microcontroller for collecting current of the brushless DC motor.
  • the brushless DC fan control system of the present invention further includes a control command input module connected to the input end of the microcontroller for receiving an external control command.
  • the output voltage of the M voltage regulating signal is connected, and is used for adjusting the driving voltage of the brushless DC motor according to the PWM voltage regulating signal sent by the microcontroller.
  • the MOS tube driving module is connected to the pulse width modulation signal output end of the microcontroller, and the MOS tube driving module controls the corresponding according to the pulse width modulation signal.
  • the MOS tube is turned on.
  • the brushless DC electric fan control system of the present invention the back EMF detecting module is configured to collect the counter electromotive force of the brushless DC motor and send the back electromotive force to the AD converter built in the microcontroller.
  • the brushless DC electric fan control system embodying the invention has the following beneficial effects:
  • the utility model reduces the power consumption by replacing the traditional AC motor with a brushless DC motor, and controls the motor speed by controlling the input voltage of the DC motor.
  • the switching frequency of the MOS tube and the input voltage of the motor are reduced, and the ultra-quiet effect can be achieved.
  • the invention uses a back EMF detection module to collect the back electromotive force of the brushless DC motor, sends it to the built-in A/D converter of the microcontroller, and calculates the rotor position of the brushless DC motor by means of a program instead of detecting the position of the rotor.
  • the sensor reduces production and maintenance costs and allows for a more accurate calculation of the motor commutation point.
  • FIG. 1 is a structural block diagram of a brushless DC electric fan control system of the present invention
  • FIG. 2 is a circuit schematic diagram of an embodiment of a microcontroller
  • FIG. 3 is a circuit schematic diagram of an embodiment of a bridge rectifier circuit, a switching power supply module, and a three-terminal regulator;
  • FIG. 4 is a circuit schematic diagram of an embodiment of a voltage regulation module;
  • FIG. 5 is a circuit diagram of an embodiment of a MOS tube driving module, a back potential detecting module, and a current sampling module;
  • FIG. 6 is a circuit schematic diagram of an embodiment of a control command input module.
  • the brushless DC fan control system of the present invention comprises: a microcontroller 5, a brushless direct current
  • the bridge 7, the bridge rectifier circuit 1 for rectifying and filtering the alternating current into a direct current, is connected to the output end of the microcontroller 5, and is used for adjusting the driving voltage of the DC motor outputted by the bridge rectifier circuit 1 to control no
  • a voltage regulating module 4 for brushing the speed of the DC motor 7 is connected to the output end of the microcontroller 5, and is used for controlling the conduction of the corresponding MOS tube to drive the MOS tube driving module 6 of the brushless DC motor 7 to be energized.
  • a back electromotive force detecting module 8 connected to the input end of the microcontroller 5 for collecting the counter electromotive force of the brushless DC motor 7 and transmitting it to the microcontroller 5.
  • the output of the switching power supply module 2 is connected to reduce the DC voltage outputted by the switching power supply module 2 to implement a three-terminal regulator 3 for supplying power to the microcontroller 5.
  • a current sampling module 9 for connecting the current of the brushless DC motor 7 to the input of the microcontroller 5.
  • a control command input module 10 connected to the input of the microcontroller 5 for receiving an external control command.
  • FIG. 2 it is a circuit schematic of an embodiment of a microcontroller.
  • the microcontroller 5 preferably uses a microcontroller of the type STM8S105K4T6.
  • the working voltage is 5V
  • the built-in AD converter is used to receive the DC motor back electromotive force input by the back potential detecting module 8
  • the position of the DC motor rotor is calculated by a software program
  • the microcontroller 5 transmits the corresponding PWM pulse width according to the position information.
  • the modulation signal is sent to the M OS tube driving module 6 to control the opening of the corresponding MOS tube, thereby controlling the current direction of the brushless DC motor 7, so as to realize the energization operation of the brushless DC motor 7.
  • FIG. 3 it is a circuit schematic diagram of an embodiment of a bridge rectifier circuit, a switching power supply module, and a three-terminal regulator.
  • the input 220V AC power is rectified by the bridge rectifier circuit 1 to become 310V DC.
  • the switching power supply module 2 of the type VIPER22ADIP is used, and the input of 310V DC generates 16V DC to provide the working power for the MOS tube driving module 6. It is preferred to use a fixed-type three-terminal regulator with an output voltage of 5V, model 78L05, and input 5V DC to generate 5V DC for the microcontroller 5.
  • FIG. 4 it is a circuit schematic diagram of an embodiment of a voltage regulating module.
  • the voltage regulating module 4 is connected to the output end of the microcontroller 5, and receives the PWM voltage regulating signal and the CUT OFF voltage from the microcontroller 5. Turn off the signal.
  • the voltage regulating module 4 adjusts the DC motor driving voltage output from the bridge rectifier circuit 1 according to the PWM voltage regulating signal to control the rotation speed of the brushless DC motor 7.
  • the microcontroller 5 issues a CUT OFF signal, and the voltage regulating module 4 turns off the DC motor driving voltage to protect the voltage.
  • FIG. 5 it is a circuit schematic diagram of an embodiment of a MOS transistor driving module, a back potential detecting module, and a current sampling module.
  • three MOS transistor drivers of the type IR2103 are used to form a MOS transistor driving module 6, which controls the conduction of six MOS transistors.
  • the MOS transistor driver receives the pulse width modulation signal outputted by the microcontroller 5, and controls the corresponding two MOS transistors to be turned on according to the signal, thereby controlling the current direction of the brushless DC motor 7, so that the brushless DC motor 7 is energized. run.
  • the back EMF detecting module 8 detects the three-phase voltage of the brushless DC motor 7 and inputs it to the microcontroller 5, and after the operation, the microcontroller 5 transmits the corresponding pulse width modulation signal.
  • the MOS tube driver is implemented to achieve a closed loop control function.
  • the current sampling module 9 inputs the current of the collected brushless DC motor 7 to the microcontroller 5, and the microcontroller 5 monitors the operation of the brushless DC motor 7 according to the current situation of the collected current. In the case of a dangerous operating condition such as an overload, a PWM voltage regulating signal is issued to turn off the driving voltage of the brushless DC motor 7, which serves as a motor protection.
  • FIG. 6 it is a circuit schematic diagram of an embodiment of a control command input module.
  • the control command input module 1 0 is used to receive the speed and operation mode control commands of the button or remote control input.
  • the same has a debug interface and a programming pin.

Abstract

A control system for a brushless DC fan includes a microcontroller (5), a brushless DC motor (7), a bridge rectifying circuit (1), a voltage regulating module (4) for regulating the driving voltage of the motor (7), an MOS transistor driving module (6) for driving the motor (7) in the manner of controlling the switching on of the MOS transistor, and a back electromotive force (EMF) detecting module (8). The power loss is reduced by using the brushless DC motor (7) instead of an AC motor. By controlling the input voltage of the brushless DC motor (7) so as to control the rotational speed of the motor (7), the switching frequency and input voltage of the MOS transistor are decreased and an ultra-quiet effect can be achieved. Compared with detecting the rotor position by hall sensors, the cost of production and maintenance can be reduced and the commutating points of the motor (7) can be calculated more accurately by detecting the back EMF of the brushless DC motor (7) by the back EMF detecting module (8) and computing the rotor position of the brushless DC motor (7) by programs.

Description

说明书  Instruction manual
Title of Invention:无刷直流电风扇控制系统Title of Invention: Brushless DC Fan Control System
#細或 #细 or
[1] 本发明涉及电风扇控制系统， 更具体地说， 涉及一种无刷直流电风扇控制系统  [1] The present invention relates to an electric fan control system, and more particularly to a brushless DC electric fan control system
[2] 目前市场上的交流电风扇品种繁多， 但交流电风扇普遍存在调速性能差、 功率 较大、 噪声大以及耗电等问题。 现有的无刷直流电风扇， 利用霍尔传感器检测 转子位置， 利用脉宽调制调节输出电流来调控转速。 虽然解决了电机功耗大的 问题， 但霍尔传感器成本较高， 且不能实现超静音效果。 [2] At present, there are many types of AC fans on the market, but AC fans generally have problems such as poor speed regulation performance, large power, high noise, and power consumption. In the existing brushless DC fan, the Hall sensor is used to detect the rotor position, and the pulse width modulation is used to adjust the output current to regulate the rotation speed. Although the problem of large power consumption of the motor is solved, the Hall sensor is costly and cannot achieve ultra-quiet effect.
[3] 本发明解决其技术问题所釆用的技术方案是： 构造一种无刷直流电风扇控制系 统， 用于对驱动风扇的无刷直流电机进行控制， 包括微控制器、 用于将交流电 整流滤波成直流电的桥式整流电路， 还包括： 与所述微控制器输出端相连接、 用于对桥式整流电路输出的直流电机驱动电压进行调节从而控制无刷直流电机 转速的调压模块， 与所述微控制器的输出端相连接、 用于控制相应的 MOS管导 通的方式来驱动无刷直流电机通电运行的 MOS管驱动模块， 以及与所述微控制 器的输入端口连接、 用于釆集无刷直流电机的反电动势并传送给微控制器的反 电势检测模块。 [3] The technical solution adopted by the present invention to solve the technical problem is: constructing a brushless DC electric fan control system for controlling a brushless DC motor that drives a fan, including a microcontroller for rectifying an alternating current The bridge rectifier circuit filtered into a direct current, further comprising: a voltage regulating module connected to the output end of the microcontroller for adjusting the driving voltage of the DC motor outputted by the bridge rectifier circuit to control the speed of the brushless DC motor, a MOS tube driving module connected to the output end of the microcontroller for controlling the conduction of the corresponding MOS tube to drive the brushless DC motor to be energized, and connected to the input port of the microcontroller The back electromotive force of the brushless DC motor is collected and transmitted to the back EMF detection module of the microcontroller.
[4] 本发明所述的无刷直流电风扇控制系统， 还包括与所述桥式整流电路的输出端 电连接、 用于降低桥式整流电路输出的直流电压实现给 MOS管驱动模块供电的 开关电源模块。  [4] The brushless DC fan control system of the present invention further includes a switch electrically connected to an output end of the bridge rectifier circuit for reducing a DC voltage outputted by the bridge rectifier circuit to supply power to the MOS tube drive module. Power module.
[5] 本发明所述的无刷直流电风扇控制系统， 还包括与所述开关电源模块输出端相 连接用于降低开关电源模块输出的直流电压从而实现给微控制器供电的三端稳 压器。  [5] The brushless DC fan control system of the present invention further includes a three-terminal regulator connected to the output end of the switching power supply module for reducing the DC voltage output by the switching power supply module to supply power to the microcontroller. .
[6] 本发明所述的无刷直流电风扇控制系统， 还包括与所述微控制器的输入端相连 接、 用于釆集无刷直流电机电流的电流釆样模块。 [7] 本发明所述的无刷直流电风扇控制系统， 还包括与所述微控制器的输入端相连 接、 用于接收外部控制命令的控制命令输入模块。 [6] The brushless DC fan control system of the present invention further includes a current sampling module connected to the input end of the microcontroller for collecting current of the brushless DC motor. [7] The brushless DC fan control system of the present invention further includes a control command input module connected to the input end of the microcontroller for receiving an external control command.
[8] 本发明所述的无刷直流电风扇控制系统， 所述调压模块与所示微控制器的 PW[8] The brushless DC fan control system of the present invention, the voltage regulating module and the PW of the illustrated microcontroller
M调压信号输出端相连接、 用于根据微控制器发出的 PWM调压信号对无刷直流 电机的驱动电压进行调节。 The output voltage of the M voltage regulating signal is connected, and is used for adjusting the driving voltage of the brushless DC motor according to the PWM voltage regulating signal sent by the microcontroller.
[9] 本发明所述的无刷直流电风扇控制系统， 所述 MOS管驱动模块与所述微控制器 的脉宽调制信号输出端相连接， MOS管驱动模块根据脉宽调制信号控制相应的[9] The brushless DC fan control system of the present invention, the MOS tube driving module is connected to the pulse width modulation signal output end of the microcontroller, and the MOS tube driving module controls the corresponding according to the pulse width modulation signal.
MOS管导通。 The MOS tube is turned on.
[10] 本发明所述的无刷直流电风扇控制系统， 所述反电势检测模块用于釆集无刷直 流电机的反电动势并将该反电动势发送给微控制器内置的 AD转换器处理。  [10] The brushless DC electric fan control system of the present invention, the back EMF detecting module is configured to collect the counter electromotive force of the brushless DC motor and send the back electromotive force to the AD converter built in the microcontroller.
[11] 实施本发明的无刷直流电风扇控制系统， 具有以下有益效果： 用无刷直流型电 机代替传统交流电机实现了降低功耗的效果， 用控制直流电机输入电压的方法 来控制电机转速， 降低了 MOS管的开关频率以及电机的输入电压， 能够达到超 静音效果。 本发明釆用反电势检测模块釆集无刷直流电机反电动势， 发送给微 控制器内置的 A/D转换器并通过程序计算出无刷直流电机的转子位置的方式代替 检测转子位置的霍尔传感器， 降低了生产和维护成本， 同吋能更精确的计算出 电机换向点。  [11] The brushless DC electric fan control system embodying the invention has the following beneficial effects: The utility model reduces the power consumption by replacing the traditional AC motor with a brushless DC motor, and controls the motor speed by controlling the input voltage of the DC motor. The switching frequency of the MOS tube and the input voltage of the motor are reduced, and the ultra-quiet effect can be achieved. The invention uses a back EMF detection module to collect the back electromotive force of the brushless DC motor, sends it to the built-in A/D converter of the microcontroller, and calculates the rotor position of the brushless DC motor by means of a program instead of detecting the position of the rotor. The sensor reduces production and maintenance costs and allows for a more accurate calculation of the motor commutation point.
國删  Country deletion
[12] 下面将结合附图及实施例对本发明作进一步说明， 附图中：  [12] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
[13] 图 1是本发明无刷直流电风扇控制系统的结构框图； [13] FIG. 1 is a structural block diagram of a brushless DC electric fan control system of the present invention;
[14] 图 2是微控制器的一实施例的电路原理图； [14] FIG. 2 is a circuit schematic diagram of an embodiment of a microcontroller;
[15] 图 3是桥式整流电路、 开关电源模块以及三端稳压器一实施例的电路原理图； [16] 图 4是调压模块的一实施例的电路原理图；  [15] FIG. 3 is a circuit schematic diagram of an embodiment of a bridge rectifier circuit, a switching power supply module, and a three-terminal regulator; [16] FIG. 4 is a circuit schematic diagram of an embodiment of a voltage regulation module;
[17] 图 5是 MOS管驱动模块、 反电势检测模块以及电流釆样模块一实施例的电路原 理图；  [17] FIG. 5 is a circuit diagram of an embodiment of a MOS tube driving module, a back potential detecting module, and a current sampling module;
[18] 图 6是控制命令输入模块的一实施例电路原理图。  [18] FIG. 6 is a circuit schematic diagram of an embodiment of a control command input module.
難  difficult
[19] 如图 1所示， 本发明无刷直流电风扇控制系统， 包括： 微控制器 5， 无刷直流电 机 7， 用于将交流电整流滤波成直流电的桥式整流电路 1， 与所述微控制器 5的输 出端相连接、 用于对桥式整流电路 1输出的直流电机驱动电压进行调节从而控制 无刷直流电机 7转速的调压模块 4， 与所述微控制器 5的输出端相连接、 用于控制 相应的 MOS管导通的方式来驱动无刷直流电机 7通电运行的 MOS管驱动模块 6， 与所述微控制器 5的输入端相连接、 用于釆集无刷直流电机 7的反电动势并传送 给微控制器 5的反电势检测模块 8。 [19] As shown in FIG. 1, the brushless DC fan control system of the present invention comprises: a microcontroller 5, a brushless direct current The bridge 7, the bridge rectifier circuit 1 for rectifying and filtering the alternating current into a direct current, is connected to the output end of the microcontroller 5, and is used for adjusting the driving voltage of the DC motor outputted by the bridge rectifier circuit 1 to control no A voltage regulating module 4 for brushing the speed of the DC motor 7 is connected to the output end of the microcontroller 5, and is used for controlling the conduction of the corresponding MOS tube to drive the MOS tube driving module 6 of the brushless DC motor 7 to be energized. And a back electromotive force detecting module 8 connected to the input end of the microcontroller 5 for collecting the counter electromotive force of the brushless DC motor 7 and transmitting it to the microcontroller 5.
[20] 还包括与所述桥式整流电路 1的输出端电连接、 用于降低桥式整流电路 1输出的 直流电压实现给 MOS管驱动模块 6供电的开关电源模块 2。  [20] Further comprising a switching power supply module 2 electrically connected to the output of the bridge rectifier circuit 1 for reducing the DC voltage output from the bridge rectifier circuit 1 to supply power to the MOS transistor drive module 6.
[21] 与所述开关电源模块 2输出端相连接用于降低开关电源模块 2输出的直流电压从 而实现给微控制器 5供电的三端稳压器 3。  [21] The output of the switching power supply module 2 is connected to reduce the DC voltage outputted by the switching power supply module 2 to implement a three-terminal regulator 3 for supplying power to the microcontroller 5.
[22] 与所述微控制器 5的输入端相连接、 用于釆集无刷直流电机 7电流的电流釆样模 块 9。  [22] A current sampling module 9 for connecting the current of the brushless DC motor 7 to the input of the microcontroller 5.
[23] 与所述微控制器 5的输入端相连接、 用于接收外部控制命令的控制命令输入模 块 10。  [23] A control command input module 10 connected to the input of the microcontroller 5 for receiving an external control command.
[24] 如图 2所示， 是微控制器的一实施例的电路原理图。 本实施例中， 微控制器 5优 选釆用型号为 STM8S105K4T6的微控制器。 其工作电压为 5V, 内置 AD转换器用 于接收反电势检测模块 8输入的直流电机反电动势， 再通过软件程序计算出直流 电机转子的位置， 微控制器 5根据此位置信息发送相应的 PWM脉宽调制信号给 M OS管驱动模块 6控制相应 MOS管的开通， 从而控制无刷直流电机 7的电流方向， 以实现无刷直流电机 7通电运行。  [24] As shown in FIG. 2, it is a circuit schematic of an embodiment of a microcontroller. In this embodiment, the microcontroller 5 preferably uses a microcontroller of the type STM8S105K4T6. The working voltage is 5V, the built-in AD converter is used to receive the DC motor back electromotive force input by the back potential detecting module 8, and the position of the DC motor rotor is calculated by a software program, and the microcontroller 5 transmits the corresponding PWM pulse width according to the position information. The modulation signal is sent to the M OS tube driving module 6 to control the opening of the corresponding MOS tube, thereby controlling the current direction of the brushless DC motor 7, so as to realize the energization operation of the brushless DC motor 7.
[25] 如图 3所示， 是桥式整流电路、 开关电源模块以及三端稳压器一实施例的电路 原理图。 在本实施例中， 输入的 220V交流电经桥式整流电路 1整流后变成 310V直 流电。 在本实施例中釆用型号为 VIPER22ADIP的开关电源模块 2， 输入 310V直流 电产生 16V直流电为 MOS管驱动模块 6提供工作电源。 优选釆用型号为 78L05的 输出电压为 5V的固定式三端稳压器 3， 输入 16V直流电产生 5V直流电为微控制器 5提供工作电源。  [25] As shown in Fig. 3, it is a circuit schematic diagram of an embodiment of a bridge rectifier circuit, a switching power supply module, and a three-terminal regulator. In this embodiment, the input 220V AC power is rectified by the bridge rectifier circuit 1 to become 310V DC. In this embodiment, the switching power supply module 2 of the type VIPER22ADIP is used, and the input of 310V DC generates 16V DC to provide the working power for the MOS tube driving module 6. It is preferred to use a fixed-type three-terminal regulator with an output voltage of 5V, model 78L05, and input 5V DC to generate 5V DC for the microcontroller 5.
[26] 如图 4所示， 是调压模块的一实施例的电路原理图。 本实施例中调压模块 4与微 控制器 5的输出端相连接， 接收微控制器 5发出的 PWM调压信号和 CUT OFF电压 关断信号。 调压模块 4根据 PWM调压信号， 对桥式整流电路 1输出的直流电机驱 动电压进行调节从而控制无刷直流电机 7的转速。 当检测到无刷直流电机 7过载 或出现其它危险运行状况吋， 微控制器 5发出 CUT OFF信号， 调压模块 4关断直 流电机驱动电压， 起到保护作用。 [26] As shown in FIG. 4, it is a circuit schematic diagram of an embodiment of a voltage regulating module. In this embodiment, the voltage regulating module 4 is connected to the output end of the microcontroller 5, and receives the PWM voltage regulating signal and the CUT OFF voltage from the microcontroller 5. Turn off the signal. The voltage regulating module 4 adjusts the DC motor driving voltage output from the bridge rectifier circuit 1 according to the PWM voltage regulating signal to control the rotation speed of the brushless DC motor 7. When it is detected that the brushless DC motor 7 is overloaded or other dangerous operating conditions occur, the microcontroller 5 issues a CUT OFF signal, and the voltage regulating module 4 turns off the DC motor driving voltage to protect the voltage.
[27] 如图 5所示， 是 MOS管驱动模块、 反电势检测模块以及电流釆样模块一实施例 的电路原理图。 在本实施例中釆用型号为 IR2103的 3个 MOS管驱动器构成 MOS管 驱动模块 6， 控制 6个 MOS管的导通。 所述 MOS管驱动器接收微控制器 5输出的脉 宽调制信号， 并根据此信号控制相应的 2个 MOS管导通， 从而控制无刷直流电机 7的电流方向， 以实现无刷直流电机 7通电运行。  [27] As shown in Fig. 5, it is a circuit schematic diagram of an embodiment of a MOS transistor driving module, a back potential detecting module, and a current sampling module. In the present embodiment, three MOS transistor drivers of the type IR2103 are used to form a MOS transistor driving module 6, which controls the conduction of six MOS transistors. The MOS transistor driver receives the pulse width modulation signal outputted by the microcontroller 5, and controls the corresponding two MOS transistors to be turned on according to the signal, thereby controlling the current direction of the brushless DC motor 7, so that the brushless DC motor 7 is energized. run.
[28] 在本实施例中， 反电势检测模块 8对无刷直流电机 7的三相电压进行检测， 并输 入到微控制器 5， 经过运算后微控制器 5将相应的脉宽调制信号传送给 MOS管驱 动器， 从而实现了一个闭环控制功能。  [28] In this embodiment, the back EMF detecting module 8 detects the three-phase voltage of the brushless DC motor 7 and inputs it to the microcontroller 5, and after the operation, the microcontroller 5 transmits the corresponding pulse width modulation signal. The MOS tube driver is implemented to achieve a closed loop control function.
[29] 在本实施例中， 电流釆样模块 9将釆集的无刷直流电机 7的电流输入到微控制器 5， 微控制器 5根据釆集的电流情况监控无刷直流电机 7的运行状况， 如果出现过 载等危险运行状况便发出 PWM调压信号， 关断无刷直流电机 7的驱动电压， 起到 电机保护的作用。  [29] In the present embodiment, the current sampling module 9 inputs the current of the collected brushless DC motor 7 to the microcontroller 5, and the microcontroller 5 monitors the operation of the brushless DC motor 7 according to the current situation of the collected current. In the case of a dangerous operating condition such as an overload, a PWM voltage regulating signal is issued to turn off the driving voltage of the brushless DC motor 7, which serves as a motor protection.
[30] 如图 6所示， 是控制命令输入模块的一实施例电路原理图。 控制命令输入模块 1 0用于接收按键或遥控输入的速度、 运转模式控制指令。 同吋设有调试接口和烧 录引脚。  [30] As shown in FIG. 6, it is a circuit schematic diagram of an embodiment of a control command input module. The control command input module 1 0 is used to receive the speed and operation mode control commands of the button or remote control input. The same has a debug interface and a programming pin.
[31] 以上所述仅为本发明的优选实施例， 并不用以限制本发明， 凡在本发明的精神 和原则内所作的任何修改、 等同替换或改进等， 均应包含在本发明的保护范围 内。  The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

权利要求书 Claim
[Claim 1] 1、 一种无刷直流电风扇控制系统， 用于对驱动风扇的无刷直流电 机 （7) 进行控制， 包括微控制器 （5) 、 用于将交流电整流滤波 成直流电的桥式整流电路 （1) ， 其特征在于， 还包括： 与所述微 控制器 （5) 输出端相连接、 用于对桥式整流电路 （1) 输出的直 流电机驱动电压进行调节从而控制无刷直流电机 （7) 转速的调压 模块 (4) ， 与所述微控制器 （5) 的输出端相连接、 用于控制相 应的 MOS管导通的方式来驱动无刷直流电机 （7) 通电运行的 MO [Claim 1] 1. A brushless DC fan control system for controlling a brushless DC motor (7) that drives a fan, including a microcontroller (5), a bridge for rectifying and filtering alternating current into a direct current The rectifier circuit (1) is further characterized by: a connection with the output end of the microcontroller (5) for adjusting the DC motor driving voltage outputted by the bridge rectifier circuit (1) to control the brushless DC The motor (7) speed regulating module (4) is connected to the output end of the microcontroller (5) for controlling the corresponding MOS tube conduction mode to drive the brushless DC motor (7) to be energized MO
S管驱动模块 (6) ， 以及与所述微控制器 （5) 的输入端口连接、 用于釆集无刷直流电机 （7) 的反电动势并传送给微控制器 （5) 的反电势检测模块 (8) 。 An S-tube drive module (6), and a back-electrode detection connected to the input port of the microcontroller (5) for collecting the back electromotive force of the brushless DC motor (7) and transmitting it to the microcontroller (5) Module ( 8 ).
[Claim 2] 2、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于 [Claim 2] 2. The brushless DC electric fan control system according to claim 1, characterized in that
， 还包括与所述桥式整流电路 （1) 的输出端电连接、 用于降低桥 式整流电路 （1) 输出的直流电压并给 MOS管驱动模块 (6) 供电 的开关电源模块 (2) 。 And a switching power supply module (2) for electrically connecting the output of the bridge rectifier circuit (1), reducing the DC voltage outputted by the bridge rectifier circuit (1), and supplying power to the MOS transistor driving module (6) .
[Claim 3] 3、 根据权利要求 2所述的无刷直流电风扇控制系统， 其特征在于 [Claim 3] 3. The brushless DC fan control system according to claim 2, characterized in that
， 还包括与所述开关电源模块 (2) 输出端相连接用于降低开关电 源模块 (2) 输出的直流电压并给微控制器 （5) 供电的三端稳压 器 （3) 。 And a three-terminal regulator (3) connected to the output of the switching power supply module (2) for reducing the DC voltage outputted by the switching power supply module (2) and supplying power to the microcontroller (5).
[Claim 4] 4、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于 [Claim 4] 4. The brushless DC fan control system according to claim 1, characterized in that
， 还包括与所述微控制器 （5) 的输入端相连接、 用于釆集无刷直 流电机 （7) 电流的电流釆样模块 (9) 。 Also included is a current sampling module (9) connected to the input of the microcontroller (5) for collecting current of the brushless DC motor (7).
[Claim 5] 5、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于 [Claim 5] 5. The brushless DC electric fan control system according to claim 1, wherein
， 还包括与所述微控制器 （5) 的输入端相连接、 用于接收外部控 制命令的控制命令输入模块 ( 10) 。 Also included is a control command input module (10) connected to the input of the microcontroller (5) for receiving an external control command.
[Claim 6] 6、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于 [Claim 6] 6. The brushless DC fan control system according to claim 1, wherein
， 所述调压模块 (4) 与所述微控制器 （5) 的 PWM调压信号输出 端相连接、 用于根据微控制器 （5) 发出的 PWM调压信号对无刷 直流电机 （7) 的驱动电压进行调节。 The voltage regulating module (4) is connected to the PWM voltage regulating signal output end of the microcontroller (5), and is used for brushless signal according to the PWM voltage regulating signal sent by the microcontroller (5) The drive voltage of the DC motor (7) is adjusted.
[Claim 7] 7、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于[Claim 7] 7. The brushless DC fan control system according to claim 1, characterized in that
， 所述 MOS管驱动模块 (6) 与所述微控制器 （5) 的脉宽调制信 号输出端相连接， MOS管驱动模块 (6) 根据脉宽调制信号控制相 应的 MOS管导通。 The MOS transistor driving module (6) is connected to the pulse width modulation signal output end of the microcontroller (5), and the MOS transistor driving module (6) controls the corresponding MOS transistor to be turned on according to the pulse width modulation signal.
[Claim S] 8、 根据权利要求 1所述的无刷直流电风扇控制系统， 其特征在于 [Claim S] 8. The brushless DC fan control system according to claim 1, characterized in that
， 所述反电势检测模块 (8) 用于釆集无刷直流电机 （7) 的反电 动势并将该反电动势发送给微控制器 （5) 内置的 AD转换器处理 The back potential detecting module (8) is configured to collect the back electromotive force of the brushless DC motor (7) and send the back electromotive force to the microcontroller (5) built-in AD converter processing
PCT/CN2009/074844 2009-11-06 2009-11-06 Control system for brushless dc fan WO2011054151A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108988701A (en) * 2018-07-23 2018-12-11 中国海洋石油集团有限公司 A kind of control device and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6380707B1 (en) * 1998-10-12 2002-04-30 Danfoss Compressors Gmbh Method and device for controlling a brushless electric motor
CN1710801A (en) * 2005-06-21 2005-12-21 北京航空航天大学 Power-consumption control system of small armature electric induction permanent magnet brush-less DC motor
CN101364781A (en) * 2008-07-01 2009-02-11 上海大学 Position-sensorless control device for wide speed regulating range brushless DC motor without filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6380707B1 (en) * 1998-10-12 2002-04-30 Danfoss Compressors Gmbh Method and device for controlling a brushless electric motor
CN1710801A (en) * 2005-06-21 2005-12-21 北京航空航天大学 Power-consumption control system of small armature electric induction permanent magnet brush-less DC motor
CN101364781A (en) * 2008-07-01 2009-02-11 上海大学 Position-sensorless control device for wide speed regulating range brushless DC motor without filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108988701A (en) * 2018-07-23 2018-12-11 中国海洋石油集团有限公司 A kind of control device and method

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