CN102638170A - Constant amplitude vector alternating current voltage regulating method - Google Patents

Constant amplitude vector alternating current voltage regulating method Download PDF

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Publication number
CN102638170A
CN102638170A CN2012101038280A CN201210103828A CN102638170A CN 102638170 A CN102638170 A CN 102638170A CN 2012101038280 A CN2012101038280 A CN 2012101038280A CN 201210103828 A CN201210103828 A CN 201210103828A CN 102638170 A CN102638170 A CN 102638170A
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voltage
vector
phase
input voltage
alpha
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CN2012101038280A
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CN102638170B (en
Inventor
张代润
刘红萍
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Sichuan University
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Sichuan University
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Abstract

The invention discloses a constant amplitude vector alternating current voltage regulating method which is characterized by comprising the steps of: outputting an input voltage vector Upsilon S and a compensation voltage vector Upsilon C of a power supply to an output voltage vector Upsilon O of a load to be connected in sequence so as to obtain the phase difference alpha between the Upsilon S and Upsilon C; and retaining the compensation voltage vector and the input voltage vector of the power supply to be equal, changing the phase angle alpha of the compensation voltage vector relative to the input voltage vector of the power supply, thus realizing the voltage regulation of wide amplitude and being beneficial to retaining of sinusoidal waveform. The constant amplitude vector alternating current voltage regulating method is applicable to a single-phase or three-phase alternating current voltage regulator, an alternating current voltage stabilizer, an alternating current phase shifter, a sinusoidal wave inverter, a sinusoidal wave frequency converter and an electronic power transformer which need wide-amplitude sinusoidal voltage regulation, and further can be used for realizing no contacts, no steps and sine of large-capacity voltage regulation and voltage stabilization.

Description

Permanent width of cloth vector AC voltage adjusting method
Technical field
The present invention relates to permanent width of cloth vector (or permanent width of cloth phasor) AC voltage adjusting method, particularly single-phase or three-phase contactless, stepless, the sinusoidal wave power electronics pressure regulation method of wide cut, method for stabilizing voltage.Belong to AC voltage adjusting, AC voltage-stabilizing technical field.
Background technology
Existing AC voltage adjusting, method for stabilizing voltage mainly contain:
(1) adopt servomotor to drive brush and move the pressure regulation of realization transformer output voltage, output voltage realizes having level (transformer has a plurality of taps) or stepless (like autotransformer) to regulate.But because the existence of motor and brush promptly is the voltage regulating mode that the contact is arranged, its shortcoming is that pressure regulation speed is slow, the life-span short, be prone to get stuck, volume greatly, Heavy Weight etc.
(2) adopt controllable silicon to regulate the transformer output voltage, realize contactless voltage regulating mode as electronic switch.But, can't realize continuous voltage regulating, thereby the low deficiency of output voltage precision is arranged because of pressure regulation has level; Because of Industrial Frequency Transformer is arranged, still have that volume is big, the deficiency of Heavy Weight.
(3) mode with the AC/DC/AC conversion realizes the AC sine wave pressure regulation; The big electrochemical capacitor of direct current ring is regulated slowly the direct current loop voltag; And when only depending on the index of modulation to come control output voltage, waveform difference, deficiency that precision is low are arranged at output voltage when higher or low, be difficult to realize the wide cut pressure regulation.
When (4) realizing the AC sine wave pressure regulation, the deficiency that output voltage waveforms is poor, precision is low is arranged with the mode of AC/AC conversion; Simultaneously, also be difficult to use the system of single phase poaer supply.
Summary of the invention
The objective of the invention is to the deficiency of prior art and a kind of permanent width of cloth vector (or permanent width of cloth phasor) AC voltage adjusting method is provided, be characterized in: contactless, stepless, the sinusoidal wave power electronics pressure regulation of wide cut, voltage stabilizing technique; Be applicable to single, the three-phase system of different capacitance grade; Volume is little, in light weight.
The object of the invention is realized by following technical measures.
Permanent width of cloth vector AC voltage adjusting method may further comprise the steps:
1) output voltage vector
Figure BDA0000151946920000013
that input voltage vector
Figure BDA0000151946920000011
the bucking voltage vector of power supply is outputed to load connects the phase difference α between
Figure BDA0000151946920000014
and
Figure BDA0000151946920000015
successively; Keep bucking voltage vector
Figure BDA0000151946920000016
to equate with the mould of the input voltage vector of power supply; Change the phase angle [alpha] of bucking voltage vector with respect to the input voltage vector
Figure BDA0000151946920000019
of power supply, the ratio that then obtains the mould of output voltage vector, input voltage vector is:
U O U S = 2 cos ( α 2 ) - - - ( 1 )
Can know by formula (1), when α changes to 0 ° by 180 °, ratio U O/ U SFor non-linear and change to 2 by 0 monotonously, so the output voltage U of load OThrough changing the continuous adjusting that phase angle [alpha] just can realize wide cut;
2) in AC voltage regulator, work as U S=U N, U NBe rated voltage, require output voltage at (0～1.2) * U NThe interior variation, α is adjusted to 106.26 ° by 180 ° so;
3) in AC voltage regulator, work as U S=0.5U N, the low half of input voltage to rated voltage, load voltage still can be maintained rated voltage, α=0 °, U O=U N, input voltage is at (0.5～1.0) * U NChange, output voltage can be stabilized in U NConstant; Work as U S>=U NThe time, find the solution formula (1) unique α value, α>=120 ° make U O=U N, input voltage is during greater than rated voltage, U S>=U N, output voltage still can be stabilized in U NConstant; This method realizes 0.5U N≤U S＜∞ is the AC voltage-stabilizing of wide cut very;
4) do not change Size, only adjustment
Figure BDA0000151946920000023
Relatively
Figure BDA0000151946920000024
Phase angle [alpha], just can realize wide cut
Figure BDA0000151946920000025
Voltage-regulation; This method also helps maintenance Sinusoidal waveform because
Figure BDA0000151946920000027
Be that two amplitudes equate and have the sinusoidal wave sum of phase difference, promptly U → O = U → S + U → C .
Bucking voltage
Figure BDA00001519469200000210
compensation that AC power input voltage
Figure BDA0000151946920000029
produces through converters; And keep amplitude constant; And change the phase angle [alpha] of its relative supply voltage
Figure BDA00001519469200000212
, just can obtain the different sinewave output voltage of amplitude
Figure BDA00001519469200000213
Permanent width of cloth vector (or permanent width of cloth phasor) AC voltage adjusting method is applicable to single-phase or three phase ac controller, AC voltage regulator, interchange phase shifter, sinewave inverter, sinusoidal wave frequency converter, the electric power electric transformer that needs the sinusoidal wave pressure regulation of wide cut; Can also realize contactless, stepless, the sineization of big capacity AC voltage adjusting, voltage stabilizing.
The present invention has following advantage:
(1) realizes contactless, the stepless sinusoidal wave power electronics voltage regulator of big capacity wide cut, pressurizer.
(2) be applicable to list, three-phase system.
(3) no industrial frequency transformer has reduced weight of equipment and volume.
Description of drawings
Fig. 1 is the schematic diagram of permanent width of cloth vector AC voltage adjusting method.
1 power supply input voltage vector
Figure BDA00001519469200000214
2. compensation voltage vector
Figure BDA00001519469200000215
3. output to the load output voltage vector
Figure BDA00001519469200000216
4.
Figure BDA00001519469200000217
and
Figure BDA00001519469200000218
phase difference between α.
Fig. 2 is U of the present invention O/ U SVariation relation figure with α.
5. output voltage and input voltage ratio U O/ U S, 6. bucking voltage vector And input voltage vector
Figure BDA0000151946920000032
Between phase difference α.
Embodiment
Through embodiment the present invention is carried out concrete description below; Be necessary to be pointed out that at this present embodiment can only be used for the present invention is further specified; Can not be interpreted as the restriction to protection range of the present invention, the skilled personnel of this area can make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment 1
As shown in Figure 1; AC power input voltage
Figure BDA0000151946920000033
compensates through the bucking voltage
Figure BDA0000151946920000034
that converters produces; Keep
Figure BDA0000151946920000035
amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA0000151946920000036
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude (i.e.
Figure BDA0000151946920000038
).In AC voltage regulator, work as U S=U N, U NBe rated voltage, require output voltage at (0～1.2) * U NThe interior variation, the excursion of α is so: 180 °～106.26 °.Output voltage frequency is identical with supply frequency.
Embodiment 2
As shown in Figure 1; AC power input voltage
Figure BDA0000151946920000039
compensates through the bucking voltage
Figure BDA00001519469200000310
that converters produces; Keep amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA00001519469200000312
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude (i.e.
Figure BDA00001519469200000314
).In AC voltage regulator, work as U S=0.5U N, i.e. the low half of input voltage to rated voltage, load voltage still can reach rated voltage, promptly during α=0 °, U is arranged O=U NSo input voltage is at (0.5～1.0) * U NThe time, output voltage can remain rated value.Work as U S>=U NThe time, find the solution formula (1) and always can get unique α value (α>=120 °) and make U O=U NRealize (0.5U N≤U S＜∞) the unusual AC voltage-stabilizing of wide cut.Output voltage frequency is identical with supply frequency.
Embodiment 3
As shown in Figure 1; AC power input voltage
Figure BDA00001519469200000315
compensates through the bucking voltage
Figure BDA00001519469200000316
that converters produces; Keep
Figure BDA00001519469200000317
amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA00001519469200000318
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude (i.e.
Figure BDA00001519469200000320
).In exchanging phase shifter, work as U S=U N, U NBe rated voltage, the adjustment process of α is (0 ° → 90 ° → 180 °), and output voltage is changed to (2U so N→ 1.4U N→ 0), output voltage With respect to input voltage
Figure BDA00001519469200000322
Being changed to of phase difference (0 ° → 45 ° → 90 °).Output voltage frequency is identical with supply frequency.
Embodiment 4
As shown in Figure 1; AC power input voltage
Figure BDA0000151946920000041
compensates through the bucking voltage
Figure BDA0000151946920000042
that converters produces; Keep amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA0000151946920000044
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude
Figure BDA0000151946920000045
(i.e.
Figure BDA0000151946920000046
).In sinewave inverter; Possibility of reversal produces two constant amplitude and equates, have simultaneously phase difference α sine voltage vector:
Figure BDA0000151946920000047
and
Figure BDA0000151946920000048
Figure BDA0000151946920000049
is equivalent to
Figure BDA00001519469200000410
Figure BDA00001519469200000411
and is equivalent to
Figure BDA00001519469200000412
and Gai Bians
Figure BDA00001519469200000414
He
Figure BDA00001519469200000415
phase difference α so have
Figure BDA00001519469200000413
, the pressure regulation that generation voltage @s C_VAL[0LJ The fixed-frequency of output voltage but can be different with supply frequency.
Embodiment 5
As shown in Figure 1; AC power input voltage
Figure BDA00001519469200000416
compensates through the bucking voltage
Figure BDA00001519469200000417
that converters produces; Keep
Figure BDA00001519469200000418
amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA00001519469200000419
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude
Figure BDA00001519469200000420
(i.e.
Figure BDA00001519469200000421
).In sinusoidal wave frequency converter; Possibility of reversal produces two constant amplitude and equates, has simultaneously the sine voltage vector of phase difference α:
Figure BDA00001519469200000422
and
Figure BDA00001519469200000424
is equivalent to
Figure BDA00001519469200000425
be equivalent to
Figure BDA00001519469200000426
thus
Figure BDA00001519469200000427
arranged change
Figure BDA00001519469200000428
He the frequency of
Figure BDA00001519469200000429
with phase difference α, the frequency modulation and voltage modulation of generation output voltage.
Embodiment 6
As shown in Figure 1; AC power input voltage
Figure BDA00001519469200000430
compensates through the bucking voltage
Figure BDA00001519469200000431
that converters produces; Keep
Figure BDA00001519469200000432
amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA00001519469200000433
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude
Figure BDA00001519469200000434
(i.e. ).In electric power electric transformer; Possibility of reversal produces two constant amplitude and equates, has simultaneously the sine voltage vector of phase difference α:
Figure BDA00001519469200000436
be equivalent to
Figure BDA00001519469200000438
with
Figure BDA00001519469200000437
and be equivalent to
Figure BDA00001519469200000439
so
Figure BDA00001519469200000440
arranged realize as AC voltage regulator, AC voltage regulator, exchange the comprehensive function of phase shifter, the controllability of raising power transformer.
Embodiment 7
As shown in Figure 1; AC power input voltage
Figure BDA00001519469200000441
compensates through the bucking voltage
Figure BDA00001519469200000442
that converters produces; Keep
Figure BDA00001519469200000443
amplitude constant; Change the phase angle [alpha] 4 of relative input voltage
Figure BDA00001519469200000444
; Can know by Fig. 2, obtain the different sinewave output voltage of amplitude
Figure BDA00001519469200000445
(i.e.
Figure BDA00001519469200000446
).Among the embodiment 1～6, single phase circuit obtains three phase ac controller, three-phase AC voltage stabilizer, three-phase alternating current phase shifter, three-phase sine-wave inverter, three-phase sine-wave frequency converter, three-phase power electronic transformer successively through triangle or star connection.

Claims (3)

1. permanent width of cloth vector AC voltage adjusting method is characterized in that this AC voltage adjusting method may further comprise the steps:
1) output voltage vector
Figure FDA0000151946910000013
that input voltage vector the bucking voltage vector of power supply is outputed to load connects the phase difference α (4) between
Figure FDA0000151946910000014
and
Figure FDA0000151946910000015
successively; Keep bucking voltage vector
Figure FDA0000151946910000016
to equate with the mould of the input voltage vector
Figure FDA0000151946910000017
of power supply; Change the phase angle [alpha] of bucking voltage vector
Figure FDA0000151946910000018
with respect to the input voltage vector
Figure FDA0000151946910000019
of power supply, the ratio that then obtains the mould of output voltage vector, input voltage vector is:
U O U S = 2 cos ( α 2 ) - - - ( 1 )
Can know by formula (1), when α changes to 0 ° by 180 °, ratio U O/ U SFor non-linear and change to 2 by 0 monotonously, so the output voltage U of load OThrough changing the continuous adjusting that phase angle [alpha] just can realize wide cut;
2) in AC voltage regulator, work as U S=U N, U NBe rated voltage, require output voltage at (0～1.2) * U NThe interior variation, α is adjusted to 106.26 ° by 180 ° so;
3) in AC voltage regulator, work as U S=0.5U N, the low half of input voltage to rated voltage, load voltage still can be maintained rated voltage, α=0 °, U O=U N, input voltage is at (0.5～1.0) * U NChange, output voltage can be stabilized in U NConstant; Work as U S>=U NThe time, find the solution formula (1) unique α value, α>=120 ° make U O=U N, input voltage is during greater than rated voltage, U S>=U N, output voltage still can be stabilized in U NConstant; This method realizes 0.5U N≤U S＜∞ is the AC voltage-stabilizing of wide cut very;
4) do not change
Figure FDA00001519469100000111
Size, only adjustment
Figure FDA00001519469100000112
Relatively Phase angle [alpha], just can realize wide cut Voltage-regulation; This method also helps maintenance
Figure FDA00001519469100000115
Sinusoidal waveform because
Figure FDA00001519469100000116
Be that two amplitudes equate and have the sinusoidal wave sum of phase difference, promptly U → O = U → S + U → C .
2. permanent according to claim 1 width of cloth vector AC voltage adjusting method; It is characterized in that: AC power input voltage
Figure FDA00001519469100000118
compensates through the bucking voltage
Figure FDA00001519469100000119
that converters produces; And keep
Figure FDA00001519469100000120
amplitude constant; And change the phase angle [alpha] of its relative supply voltage
Figure FDA00001519469100000121
, just can obtain the different sinewave output voltage of amplitude
3. permanent according to claim 1 width of cloth vector AC voltage adjusting method is characterized in that: permanent width of cloth vector AC voltage adjusting method is applicable to single-phase or three phase ac controller, AC voltage regulator, interchange phase shifter, sinewave inverter, sinusoidal wave frequency converter, the electric power electric transformer that needs the sinusoidal wave pressure regulation of wide cut; Can also realize contactless, stepless, the sineization of big capacity AC voltage adjusting, voltage stabilizing.
CN201210103828.0A 2012-04-10 2012-04-10 Constant amplitude vector alternating current voltage regulating method Expired - Fee Related CN102638170B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916021A (en) * 2013-01-06 2014-07-09 国家电网公司 Phase shifter for three-phase voltage and method for phase shifting of three-phase voltage
WO2016074191A1 (en) * 2014-11-13 2016-05-19 The University Of Hong Kong Power controller and power control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105068587A (en) * 2015-07-20 2015-11-18 广东电网有限责任公司云浮供电局 Voltage regulating method of vectors of broad-width sine waves of transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87216461U (en) * 1987-12-23 1988-08-10 倪本来 Continuous compensation type precision a.c. stabilizer
CN1062684C (en) * 1995-01-05 2001-02-28 西屋电气公司 Transmission line power flow controller with unequal advancement and retardation of transmission angle
US6756702B1 (en) * 2002-12-18 2004-06-29 Honeywell International Inc. Transport-lag compensator
CN101615045A (en) * 2009-07-29 2009-12-30 南宁微控技术有限公司 Stepless phase control compensating-type AC voltage stabilization and regulation device and voltage compensating method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87216461U (en) * 1987-12-23 1988-08-10 倪本来 Continuous compensation type precision a.c. stabilizer
CN1062684C (en) * 1995-01-05 2001-02-28 西屋电气公司 Transmission line power flow controller with unequal advancement and retardation of transmission angle
US6756702B1 (en) * 2002-12-18 2004-06-29 Honeywell International Inc. Transport-lag compensator
CN101615045A (en) * 2009-07-29 2009-12-30 南宁微控技术有限公司 Stepless phase control compensating-type AC voltage stabilization and regulation device and voltage compensating method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916021A (en) * 2013-01-06 2014-07-09 国家电网公司 Phase shifter for three-phase voltage and method for phase shifting of three-phase voltage
CN103916021B (en) * 2013-01-06 2016-08-03 国家电网公司 Three-phase voltage phase shifter and the method for three-phase voltage phase shift
WO2016074191A1 (en) * 2014-11-13 2016-05-19 The University Of Hong Kong Power controller and power control method
US10468977B2 (en) 2014-11-13 2019-11-05 The University Of Hong Kong Power controller and power control method

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