CN103326551A - Method for hindering overshoot of turning-on currents of IGBT series connection type voltage source converter - Google Patents

Method for hindering overshoot of turning-on currents of IGBT series connection type voltage source converter Download PDF

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Publication number
CN103326551A
CN103326551A CN201310188634XA CN201310188634A CN103326551A CN 103326551 A CN103326551 A CN 103326551A CN 201310188634X A CN201310188634X A CN 201310188634XA CN 201310188634 A CN201310188634 A CN 201310188634A CN 103326551 A CN103326551 A CN 103326551A
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China
Prior art keywords
stray capacitance
voltage source
inductance
series
reactor
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CN201310188634XA
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CN103326551B (en
Inventor
温家良
杨杰
药韬
贾娜
郭高朋
吴婧
王宇
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State Grid Corp of China SGCC
Smart Grid Research Institute of SGCC
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State Grid Corp of China SGCC
Smart Grid Research Institute of SGCC
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Priority to CN201310188634.XA priority Critical patent/CN103326551B/en
Publication of CN103326551A publication Critical patent/CN103326551A/en
Priority to PCT/CN2013/088397 priority patent/WO2014187101A1/en
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    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
    • H02M7/538—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a push-pull configuration
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
    • H03K17/08148—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in composite switches

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

The invention relates to the field of power systems and power electronics, in particular to a method for hindering overshoot of turning-on currents of an IGBT series connection type voltage source converter. A wave trapper unit is connected between a stray capacitor Cg and a semi-bridge structure to form a second-order circuit with the stray capacitor Cg. By means of a step response of the second-order circuit, overshoot currents caused by the stray capacitor Cg are effectively hindered and reliable guarantee is provided for operation of the IGBT series connection type voltage source converter.

Description

A kind of IGBT series-type voltage source converter is opened current over pulse inhibition method
Technical field
The present invention relates to electric power system and field of power electronics, be specifically related to a kind of IGBT series-type voltage source converter and open current over pulse inhibition method.
Background technology
Voltage source converter can carry out independent control to meritorious and idle, realizes the quick upset of trend, and it more and more receives publicity in the direct current transportation field.For satisfying the requirement of high-power, there is the scholar to propose IGBT series-type voltage source converter, this mode can make main circuit structure greatly simplify, the control complexity significantly reduces, required device greatly reduces, thereby so that device is compacter, floor space greatly reduces.In the high-voltage and high-power power electronic field in future, IGBT tandem type converter will obtain to use more widely.
But the primary equipment in the converter such as converter reactor, sleeve pipe etc. have certain over the ground stray capacitance, high-power IGBT series-type voltage source converter works on off state, the dv/dt of its generation acts on the stray capacitance, meeting generation current overshoot when device is opened, raising along with electric pressure, current over pulse can be increasing, and is final even can surpass the withstand current of IGBT, have a strong impact on the normal operation of converter.Therefore, we need to take appropriate measures to reduce the impact of stray capacitance.At present, domestic still do not have relevant Research Literature and a product.
Summary of the invention
For the deficiencies in the prior art, the purpose of this invention is to provide a kind of IGBT series-type voltage source converter and open current over pulse inhibition method, utilize the principle of second-order circuit step response, the current over pulse that stray capacitance causes has been realized effective inhibition, for the operation of IGBT series-type voltage source converter provides reliable guarantee.
The objective of the invention is to adopt following technical proposals to realize:
A kind of IGBT series-type voltage source converter is opened current over pulse inhibition method, and the system that described method is used is that IGBT series-type voltage source converter suppresses system, is used for ± electric power system of 10kV above; Comprise: reactor-capacitances in series branch road, half-bridge structure, stray capacitance Cg, inductance L and voltage source u s
Described reactor-capacitances in series branch road is in parallel with half-bridge structure; Described stray capacitance Cg and voltage source u sIn parallel; Described inductance L is connected to stray capacitance Cg and voltage source u sBetween;
Its improvements are, access trap unit between described stray capacitance Cg and half-bridge structure is with described stray capacitance Cg composition second-order circuit;
Described method is by the step response of described second-order circuit, and the current over pulse electric current that stray capacitance Cg is caused suppresses.
Wherein, described trap unit is by resistance R and inductance L 1Compose in parallel; Comprise two kinds of situations during described trap cell operation:
(1) when stray capacitance Cg both end voltage does not change, the overshoot current inductance L in the trap unit of flowing through 1, described inductance L 1Less than commutating reactor;
(2) when stray capacitance Cg both end voltage changes, be step signal effect and second-order circuit, pass through inductance L 1Electric current do not undergo mutation, overshoot current is flowed through and inductance L 1Resistance R in parallel, resistance R absorbs the energy that overshoot current produces, and suppresses the current over pulse of opening to IGBT1 valve module and IGBT2 valve module.
Wherein, described reactor-capacitances in series is propped up route reactor ESL 1, capacitor C 1, reactor ESL 2And capacitor C 2Be composed in series successively; Reactor-capacitances in series grounding;
Described half-bridge structure is composed in series by IGBT1 valve module and IGBT2 valve module; Described IGBT1 valve module and IGBT2 valve module form by IGBT and diode antiparallel with it.
Wherein, described stray capacitance Cg and voltage source u sEqual ground connection.
Compared with the prior art, the beneficial effect that reaches of the present invention is:
1, (high pressure be ± more than the 10kV) high-frequency (more than the 1000Hz) in the situation that high pressure, establishment the stray capacitance impact of IGBT being opened current over pulse, for the reliability service of high pressure IGBT series-type voltage source converter provides certain guarantee.
2, the realization of the method only needs a resistance and an inductance in parallel, and is simple in structure, cheap, be easy to realization.
3, the method can not affect the normal operation of circuit to the restricted effect of overshoot current that stray capacitance produces.
Description of drawings
Fig. 1 is the implementation structure figure of high pressure IGBT series-type voltage provided by the invention source converter current over pulse method for limiting
Fig. 2 is the variation oscillogram that the IGBT valve is opened current over pulse before and after the installing trap provided by the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
The implementation structure figure of high pressure IGBT series-type voltage provided by the invention source converter current over pulse method for limiting is that IGBT series-type voltage source converter suppresses system as shown in Figure 1, is used for ± electric power system of 10kV above; Comprise: reactor-capacitances in series branch road, half-bridge structure, stray capacitance Cg, inductance L and voltage source u s
Described reactor-capacitances in series branch road is in parallel with half-bridge structure; Described stray capacitance Cg and voltage source u sIn parallel; Described inductance L is connected to stray capacitance Cg and voltage source u sBetween;
Access trap unit forms second-order circuit with stray capacitance Cg between stray capacitance Cg and half-bridge structure.Cg is converter reactor ESL 1And ESL 2And total over the ground stray capacitance of valve side wall bushing.The trap unit is by resistance R and inductance L 1Compose in parallel.Reactor-capacitances in series is propped up route reactor ESL 1, capacitor C 1, reactor ESL 2And capacitor C 2Be composed in series successively; Reactor-capacitances in series grounding; Half-bridge structure is composed in series by IGBT1 valve module and IGBT2 valve module; Described IGBT1 valve module and IGBT2 valve module form by IGBT and diode antiparallel with it.Stray capacitance Cg and voltage source u sEqual ground connection.
If the sense of current shown in Fig. 1 is the positive direction of electric current I c.When stray capacitance Cg both end voltage becomes timing by negative, the electric current by stray capacitance Cg is as shown in the figure, and its size is C*du/dt.For high pressure IGBT series-type voltage source converter, because dc voltage is very high, and its operating frequency is higher, so this electric current will be very large.If do not take restriction, this electric current can act on the IGBT valve group of brachium pontis fully, and after dc voltage was brought up to a certain degree, this electric current can surpass the tolerance of IGBT valve, has a strong impact on the normal operation of converter.
In like manner, when stray capacitance Cg both end voltage when just becoming negative, large electric current acts on the IGBT2 valve module of lower brachium pontis fully, equally also can produce the normal operation of converter to have a strong impact on.
This electric current all can produce upper and lower bridge arm and have a strong impact on, and simultaneously for reducing cost, behind the trap Damper among installing Fig. 1, itself and stray capacitance Cg form second-order circuit.Be divided into following situation during the trap cell operation:
(1) when stray capacitance Cg both end voltage does not change, electric current all passes through inductance L wherein basically 1, and this inductance L 1Much smaller than commutating reactor, substantially can not exert an influence to the normal operation of circuit.
(2) when stray capacitance Cg both end voltage changes, be equivalent to a step signal and act on second-order circuit this moment, owing to can not undergo mutation by the electric current of inductance, thereby most electric current can by with the resistance of inductance in parallel, resistance can consume this part energy, thereby reduce it to the impact of opening current over pulse of IGBT valve module, thereby prevent from causing current over pulse to surpass the tolerance of IGBT valve module because dc voltage is too high, device is burnt out, have a strong impact on the normal operation of converter.Simultaneously, because the clamping action of anti-paralleled diode, the voltage at trap two ends can not exert an influence to the shutoff voltage stress of IGBT valve module.Therefore, this measure can provide effective guarantee for the reliably working of IGBT, and before and after the installing trap unit, the current over pulse of opening of IGBT valve changes as shown in Figure 2.
Embodiment
Resistance R in installing the trap unit additional is 3k Ω, inductance L 1Circuital current simulation result during for 6mH is as shown in the table:
The various circuit form current ratios of table 1 are than simulation result
Circuit types IGBT opens current maxima Current spikes deviate in the valve side line road
Without stray capacitance 254.9A 0A
Stray capacitance is arranged, without trap 303.0A 61.4A
Stray capacitance is arranged, install trap additional 256.1A 4.0A
The inhibition IGBT series-type voltage source converter of a kind of novelty provided by the invention is opened the method for limiting of current over pulse, utilize the principle of second-order circuit step response, the current over pulse that stray capacitance causes has been realized effective inhibition, for the operation of IGBT series-type voltage source converter provides reliable guarantee.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (4)

1. an IGBT series-type voltage source converter is opened current over pulse inhibition method, and the system that described method is used is that IGBT series-type voltage source converter suppresses system, is used for ± electric power system of 10kV above; Comprise: reactor-capacitances in series branch road, half-bridge structure, stray capacitance Cg, inductance L and voltage source u s
Described reactor-capacitances in series branch road is in parallel with half-bridge structure; Described stray capacitance Cg and voltage source u sIn parallel; Described inductance L is connected to stray capacitance Cg and voltage source u sBetween;
It is characterized in that, access trap unit forms second-order circuit with described stray capacitance Cg between described stray capacitance Cg and half-bridge structure;
Described method is by the step response of described second-order circuit, and the current over pulse electric current that stray capacitance Cg is caused suppresses.
2. the current over pulse inhibition method of opening as claimed in claim 1 is characterized in that, described trap unit is by resistance R and inductance L 1Compose in parallel; Comprise two kinds of situations during described trap cell operation:
(1) when stray capacitance Cg both end voltage does not change, the overshoot current inductance L in the trap unit of flowing through 1, described inductance L 1Less than commutating reactor, i.e. inductance L 1In 5% of commutating reactor inductance value, can the normal operation of circuit not exerted an influence;
(2) when stray capacitance Cg both end voltage changes, be step signal effect and second-order circuit, pass through inductance L 1Electric current do not undergo mutation, overshoot current is flowed through and inductance L 1Resistance R in parallel, resistance R absorbs the energy that overshoot current produces, and suppresses the current over pulse of opening to IGBT1 valve module and IGBT2 valve module.
3. the current over pulse inhibition method of opening as claimed in claim 1 is characterized in that, described reactor-capacitances in series is propped up route reactor ESL 1, capacitor C 1, reactor ESL 2And capacitor C 2Be composed in series successively; Reactor-capacitances in series grounding;
Described half-bridge structure is composed in series by IGBT1 valve module and IGBT2 valve module; Described IGBT1 valve module and IGBT2 valve module form by IGBT and diode antiparallel with it.
4. the current over pulse inhibition method of opening as claimed in claim 1 is characterized in that, described stray capacitance Cg and voltage source u sEqual ground connection.
CN201310188634.XA 2013-05-21 2013-05-21 Current over pulse suppressing method opened by a kind of IGBT series-type voltage source converter Active CN103326551B (en)

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CN201310188634.XA CN103326551B (en) 2013-05-21 2013-05-21 Current over pulse suppressing method opened by a kind of IGBT series-type voltage source converter
PCT/CN2013/088397 WO2014187101A1 (en) 2013-05-21 2013-12-03 Method for suppressing current overshoot of igbt series voltage source converter during turn-on

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CN201310188634.XA CN103326551B (en) 2013-05-21 2013-05-21 Current over pulse suppressing method opened by a kind of IGBT series-type voltage source converter

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014187101A1 (en) * 2013-05-21 2014-11-27 国家电网公司 Method for suppressing current overshoot of igbt series voltage source converter during turn-on
CN107203655A (en) * 2017-04-17 2017-09-26 全球能源互联网研究院 The numerical modeling method of mixed type dc circuit breaker
CN103954893B (en) * 2014-05-09 2018-11-27 国家电网公司 A kind of thyristor shunt detection circuit and detection method for voltage source converter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122942A (en) * 1991-10-28 1993-05-18 Matsushita Electric Works Ltd Inverter apparatus
CN1578128A (en) * 2003-06-26 2005-02-09 Emc株式会社 Noise filter and electronic apparatus having the same
CN102521457A (en) * 2011-12-15 2012-06-27 国网电力科学研究院 Laplace transform based design method for flexible direct-current starting resistance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103326551B (en) * 2013-05-21 2015-09-09 国家电网公司 Current over pulse suppressing method opened by a kind of IGBT series-type voltage source converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122942A (en) * 1991-10-28 1993-05-18 Matsushita Electric Works Ltd Inverter apparatus
CN1578128A (en) * 2003-06-26 2005-02-09 Emc株式会社 Noise filter and electronic apparatus having the same
CN102521457A (en) * 2011-12-15 2012-06-27 国网电力科学研究院 Laplace transform based design method for flexible direct-current starting resistance

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
VINOD JOHN，ET AL: "High Performance Active Gate Drive for High Power IGBTs", 《INDUSTRY APPLICATIONS CONFERENCE, 1998. THIRTY-THIRD IAS ANNUAL MEETING. THE 1998 IEEE》, vol. 2, 15 October 1998 (1998-10-15), pages 1519 - 1529 *
山田洋明等: "用串联连接的电压源PWM变频器抑制变压器冲击电流的方法", 《变流技术与电力牵引》, no. 3, 31 March 2006 (2006-03-31), pages 45 - 51 *
徐忻等: "基于电压源换流器的高压直流输电技术研究综述", 《广东电力》, vol. 25, no. 5, 31 May 2012 (2012-05-31), pages 6 - 10 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014187101A1 (en) * 2013-05-21 2014-11-27 国家电网公司 Method for suppressing current overshoot of igbt series voltage source converter during turn-on
CN103954893B (en) * 2014-05-09 2018-11-27 国家电网公司 A kind of thyristor shunt detection circuit and detection method for voltage source converter
CN107203655A (en) * 2017-04-17 2017-09-26 全球能源互联网研究院 The numerical modeling method of mixed type dc circuit breaker

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WO2014187101A1 (en) 2014-11-27

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