CN108123608A - A kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies - Google Patents

A kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies Download PDF

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Publication number
CN108123608A
CN108123608A CN201611074164.4A CN201611074164A CN108123608A CN 108123608 A CN108123608 A CN 108123608A CN 201611074164 A CN201611074164 A CN 201611074164A CN 108123608 A CN108123608 A CN 108123608A
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China
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voltage
pwm
phase
technologies
power supplys
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CN201611074164.4A
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Chinese (zh)
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赵志刚
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Individual
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/425—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a high frequency AC output voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/068—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/08—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/2932—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage, current or power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The invention discloses a kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies, including three-phase PWM AC transform circuit, 12 pulsating wave rectification circuit, control strategy three parts composition.Three-phase high-frequency PWM AC chopper used in the present invention can quickly adjust output voltage, and input power factor is high, and input current and output voltage low-frequency harmonics are small, and low-pass filter can effective filter out high-frequency harmonic.12 Pulses Rectifiers being made of boosting phase-shifting transformer and two uncontrollable rectifier bridges of six pulse waves can eliminate 5 times, 7 infra-low frequency harmonic waves, stable high voltage direct current is exported after filtering.The high-voltage DC power supply steady-state error is small, starts rapidly, and dynamic regulation ability is fast, and stability is good, disclosure satisfy that the application demand of reality, has broad application prospects.

Description

A kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies
Technical field
The present invention relates to a kind of voltage DC power supply more particularly to it is a kind of based on PWM and the 4kV of 12 impulse commutation technologies electricity Press DC power supply.
Background technology
Since high-voltage DC power supply has, small, efficient, light-weight, reaction is fast, energy storage is few, designs, the manufacturing cycle The features such as short, is extensive etc. square in pressure-resistant experiment, electrostatic precipitation, nuclear radiation detection instrument, Medical Devices, metallurgy, DC feedback It applies in face.Pervious high-voltage DC power supply is that AC three-phase is first passed through the boosting of power frequency high voltage transformer, then through thyristor Rectifying and wave-filtering finally obtains high voltage direct current.It to be mainly characterized by circuit simple.But when pilot angle is smaller, input can be made Power factor reduces, and input current can generate a large amount of low-order harmonics, and the output voltage concussion cycle is long, it is difficult to realize fast velocity modulation Section, and also be difficult to meet actual requirement in output ripple, power supply precision and stability.
The content of the invention
In order to overcome output ripple, problem present on power supply precision and stability, the present invention proposes a kind of to be based on PWM With the 4kV voltage DC power supplys of 12 impulse commutation technologies.
The technical solution adopted by the present invention to solve the technical problems is：
AC chopper, 12 Pulses Rectifiers and output filter circuit composition the present invention is based on PWM controls is based on new structure High-voltage DC power supply, can be realized in the voltage range of 0~4kV continuously adjustable.Based on PWM and 12 pulse distillation techniques 4kV voltage DC power supplys, including three-phase PWM AC transform circuit, 12 pulsating wave rectification circuit, control strategy three parts group Into.
There are six the three-phase bridges that insulated gate bipolar IGBT switching devices form by containing for the three-phase PWM AC transform circuit Formula circuit and LC filters in series composition.
The 12 pulsating wave rectification circuit uses multiple rectifying technology, 6 identical pulse wave rectifier circuits of two structures It is realized by combining.
The control section is just dared device sampling by work, and voltage controls its main electricity as feedback using PWM control modes Road.
The beneficial effects of the invention are as follows：Three-phase high-frequency PWM AC chopper used in the present invention can quickly adjust output Voltage, input power factor is high, and input current and output voltage low-frequency harmonics are small, and low-pass filter can effective filter out high frequency Harmonic wave.12 Pulses Rectifiers being made of boosting phase-shifting transformer and two uncontrollable rectifier bridges of six pulse waves, can eliminate 5 times, 7 Infra-low frequency harmonic wave exports stable high voltage direct current after filtering.The high-voltage DC power supply steady-state error is small, starts rapid, dynamic tune Energy saving power is fast, and stability is good, disclosure satisfy that the application demand of reality, has broad application prospects.
Description of the drawings
Fig. 1 high-voltage DC power supply main circuits.
Fig. 2 buck three-phase PWM AC transform circuits.
12 pulse wave rectifier circuit diagrams of Fig. 3.
Fig. 4 control strategy schematic diagrams.
Specific embodiment
As shown in Figure 1, its operation principle is:Three-phase mains pass through little Rong after the conversion of Buck type PWM AC choppings Amount LC wave filters filter out high-frequency harmonic, then the primary side of output exchange to rectifier transformer T.T is that type of attachment is Δ/Δ/Y Step-up transformer, suitable no-load voltage ratio is set so that two valve side windings of transformer T obtain the height that equal in magnitude, phase differs 30 ° Pressure exchange is inputted respectively as the net side of two three-phase commutation bridges, the output series connection of the two rectifier bridges, and finally filtering output is high Straightening stream.12 pulse wave rectifiers that the power-supply system is formed using power frequency boosting phase-shifting transformer and uncontrollable rectifier bridge, technology Relative maturity, functional reliability are high;And the power device running environment of AC/AC choppers is good, as long as being exchanged by adjusting The conducting dutycycle of PWM converters, so that it may change step-up transformer original edge voltage, so as to achieve the purpose that control direct current output.
As shown in Fig. 2, buck three-phase PWM AC chopping regulating circuit structure be three-phase PWM AC voltage adjusting circuit wherein One phase, Q1 and Q4, Q2 and Q5, Q3 and Q6 are three pairs of full control power switch.Since three-phase voltage is linearly related, two are only existed solely Vertical variable, therefore take a moment to wherein two-phase chop control, and another phase is held on, and it is same can so to compare three pipes When chopper control mode reduce 1/3 switching loss.Magnitude relationship per phase voltage determines the work of each pair power switch Mode.Specifically, a pair of switches of voltage minimum phase is held on, and other two pairs of switches carry out PWM modulation with a certain duty cycle. Such as when B phase voltages are minimum, Q2, Q5 constant conduction are allowed, and carry out complementary high-frequency PWM control respectively to Q1 and Q4, Q3 and Q6 System so obtains exporting with a series of wide pulse voltages of phase constant amplitude with input sinusoidal voltage.L1 and C4, L2 and C5, L3 Three LC low-pass filters are separately constituted with C6, their collective effects effectively filter out the high-frequency harmonic of switch.
As shown in figure 3, W1 and W2 are the uncontrollable rectifying full bridges of two 6 pulse waves, T is three winding rectifier transformer, secondary One winding a1, b1, c1 is coupled using Δ type, and another winding a2, b2, c2 are coupled using Y types.Using suitable joint group, allow 30 ° of phase shifting between the two three-phase alternating-current supplies, are overlapped mutually the output voltage of two rectifier bridges, so as to obtain each The direct current output that the interior pulsation of ac cycle is 12 times.In order to ensure that the alternating voltage for accessing two groups of rectifier bridges is equal, the line of two windings Voltage must be equal in magnitude, this just needs 0.577 times that the phase voltage of star connection winding is triangular configuration, therefore.Transformer T Two secondary winding a1/a2 the turn ratio be 1: 0.577.
As shown in figure 4, output high voltage direct current is sampled by Hall sensor, as Voltage Feedback, the benchmark with setting Value compares, and error amount is exported through pi regulator, then relatively obtains high-frequency impulse with high frequency triangular carrier.Due in 1/3 power frequency Always there is a pair of switches pipe to be held in cycle, therefore the distribution of PWM wave can be realized by zero passage detection and logic gate.Herein Illustrate the realization of the logic circuit pulse distribution so that A phase voltages are minimum.Three tunnel phase voltages after zero-crossing comparator, obtain respectively 3 tunnels power frequency square-wave signal Sab, Sbc, the Sca synchronous with line voltage.A phase voltages are less than B phase voltages so Sab is low, the letter Number after reverser again with signal Sca phases with simultaneously because A phase voltages are minimum, Sca is also high, then Ta is just height, g1, G4 is height, therefore the IGBT (Q1 and Q4) being connected with A phases is held on.Same reason, when B phase voltages are minimum, Q2 and Q5 It is held on, when C phase voltages are minimum, Q3 and Q6 are held on, and thereby realize the correct distribution of PWM ripples.Due to PI tune The presence of device is saved, even if when load variation or input voltage variation, PWM pulsewidths quick therewith rapidly can also be adjusted, so as to Change output DC voltage so that output is given without poorly tracking, ensures the stable high voltage direct current of high quality.

Claims (4)

1. a kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies, it is characterised in that：It is exchanged including three-phase PWM Translation circuit, 12 pulsating wave rectification circuit, control strategy three parts composition.
2. the 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies as described in claim 1, it is characterised in that institute Stating three-phase PWM AC transform circuit, there are six the three-phase bridge circuits and LC that insulated gate bipolar IGBT switching devices form by containing Filters in series forms.
3. the 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies as described in claim 1, it is characterised in that institute 12 pulsating wave rectification circuit is stated using multiple rectifying technology, 6 identical pulse wave rectifier circuits of two structures by combine and It realizes.
4. the 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies as described in claim 1, it is characterised in that institute It states control section and device sampling is just dared by work, voltage controls its main circuit as feedback using PWM control modes.
CN201611074164.4A 2016-11-29 2016-11-29 A kind of 4kV voltage DC power supplys based on PWM and 12 impulse commutation technologies Pending CN108123608A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109768715A (en) * 2019-02-13 2019-05-17 襄阳九鼎昊天环保设备有限公司 A kind of 220kV super-pressure static dust-removing power
CN110768539A (en) * 2019-01-22 2020-02-07 邢台子中电子科技有限公司 AC-AC converter using IGBT or MOS tube and control method thereof
CN114448285A (en) * 2022-03-10 2022-05-06 南京君海数能科技有限公司 Three-phase single-stage isolation bidirectional AC-DC converter topological structure and control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110768539A (en) * 2019-01-22 2020-02-07 邢台子中电子科技有限公司 AC-AC converter using IGBT or MOS tube and control method thereof
CN109768715A (en) * 2019-02-13 2019-05-17 襄阳九鼎昊天环保设备有限公司 A kind of 220kV super-pressure static dust-removing power
CN109768715B (en) * 2019-02-13 2024-03-19 襄阳九鼎昊天环保设备有限公司 220kV ultrahigh-voltage electrostatic dust collection power supply
CN114448285A (en) * 2022-03-10 2022-05-06 南京君海数能科技有限公司 Three-phase single-stage isolation bidirectional AC-DC converter topological structure and control method thereof

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