CN103684017A - Cascaded five-level output capacitor clamping bridge type frequency converter - Google Patents
Cascaded five-level output capacitor clamping bridge type frequency converter Download PDFInfo
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- CN103684017A CN103684017A CN201210352907.5A CN201210352907A CN103684017A CN 103684017 A CN103684017 A CN 103684017A CN 201210352907 A CN201210352907 A CN 201210352907A CN 103684017 A CN103684017 A CN 103684017A
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Abstract
The invention discloses a cascaded five-level output capacitor clamping bridge type frequency converter. The cascaded five-level output capacitor clamping bridge type frequency converter comprises a plurality of five-level output frequency converter units having a same structure. Each five-level output frequency converter unit is composed of eight controllable switches having a same structure and two capacitors. Every four controllable switches are serially connected into a series circuit. Each capacitor is connected between two nodes on two sides of the center node of a series circuit. Two ends of the two series circuits after parallel connection are used as power output ends of a corresponding five-level output frequency converter unit. The center node of the first series circuit of the previous five-level output frequency converter unit is connected with the center node of the second series circuit of the next five-level output frequency converter unit. The center node of the second series circuit of the first five-level output frequency converter unit and the center node of the first series circuit of the last five-level output frequency converter unit are used as two ends of power input ends respectively. According to the invention, the advantage of easy modularization can be realized, and the frequency converter of the invention is suitable for being used in a grid interface.
Description
Technical field
The present invention relates to a kind of frequency converter, relate in particular to a kind of cascade 5 level output capacitance clamp bridge-type frequency converter that is easy to realize modular construction.
Background technology
Depth development along with modern industry, the application of high-power current converting device in national economy is more and more extensive, as large-capacity transducer, high-power electric active filter, static passive compensation device, current transformer etc. for MW level wind-powered electricity generation unit, and for high-power converter occasion, between the power handling capability of high-power switch device and switching frequency, often exist contradiction, the larger switching frequency of power is lower conventionally.Because the restriction of switching frequency is difficult to apply the performance that PWM technology is improved the large capacity current transformer of tradition.Therefore, in high-power converter occasion, people often wish that high-power, high voltage bearing power electronic equipment can be operated under high as far as possible switching frequency, to improve the quality of output waveform.
Common inverter is conventionally also referred to as two level converters, this topological structure is fairly simple, high-power in order to obtain, the general switching device that relies on connects to bear high pressure, by switching device parallel connection, to bear large electric current, but due to the discreteness of power device parameter, this will bring the series of problems such as quiet, dynamic voltage balancing and current-sharing, technical uncertain factor impact is very large, and reliability is not high; But because output only has two level, voltage fluctuation is large, produce larger harmonic wave.Therefore this structure applications scope is very limited.
Summary of the invention
Object of the present invention provides a kind of cascade 5 level output capacitance clamp bridge-type frequency converter that is easy to realize modular construction with regard to being in order to address the above problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Cascade 5 level output capacitance clamp bridge-type frequency converter of the present invention comprises the five level output frequency converter units that a plurality of structures are identical, described in each, the structure of five level output frequency converter units is: eight identical gate-controlled switch and two electric capacity of structure, consist of, wherein four described gate-controlled switch series connection are the first series circuit, other four described gate-controlled switch series connection are the second series circuit, described in one of them, electric capacity is connected between two nodes of Centroid both sides of described the first series circuit, described in another, electric capacity is connected between two nodes of Centroid both sides of described the second series circuit, two ends after described the first series circuit and described the second series circuit parallel connection are the power output end that corresponding described five level are exported frequency converter units, described in each, the power output end of five level output frequency converter units is separate, syndeton between adjacent described five level output frequency converter units is: the Centroid of the first series circuit of previous described five level output frequency converter units is connected with the Centroid of the second series circuit of rear described five level output frequency converter units, described in first Centroid of the second series circuit of five level output frequency converter units and described in last the Centroid of the first series circuit of five level output frequency converter units be respectively the two ends of the power input of described cascade 5 level output capacitance clamp bridge-type frequency converter.
Particularly, described gate-controlled switch comprises a triode and a diode, the emitter of described triode is connected with the positive pole of described diode, the collector electrode of described triode is connected with the negative pole of described diode, the first end of the very described gate-controlled switch of the transmitting of described triode, the second end of the very described gate-controlled switch of the current collection of described triode, the control input end that the base stage of described triode is described gate-controlled switch.
Beneficial effect of the present invention is:
The present invention is by carrying out cascade to a plurality of five level output frequency converter units, each five level output frequency converter unit is realized the output of five kinds of varying levels, thereby complete the frequency-conversion processing of AC power and multistage string, also control, have required device quantity few, be easy to modular advantage, be suitable as the frequency converter of electrical network interface; Voltage by electric capacity two ends keeps balance to the selection of redundant state simultaneously, forms the clamp of output voltage is controlled.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of cascade 5 level output capacitance clamp bridge-type frequency converter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, cascade 5 level output capacitance clamp bridge-type frequency converter of the present invention comprises the five level output frequency converter units that a plurality of structures are identical, and each five level output frequency converter unit forms by eight identical gate-controlled switch and two electric capacity of structure.There is shown two five level output frequency converter units, the connecting line dotted line between two five level output frequency converter units, expression can also have more five level output frequency converter units to interconnect.Only with the structure of two five level output frequency converter units shown in scheming, the invention will be further described below:
As shown in Figure 1, the structure of first five level output frequency converter unit (five level output frequency converter units above in figure) is: by the first controllable switch S 1, the second controllable switch S 2, the 3rd controllable switch S 3, the 4th controllable switch S 4, the 5th controllable switch S 5, the 6th controllable switch S 6, the 7th controllable switch S 7, the 8th controllable switch S 8, the first capacitor C 1 and the second capacitor C 2 form, wherein, the first controllable switch S 1, the 3rd controllable switch S 3, the first series circuit that the 5th controllable switch S 5 and the 7th controllable switch S 7 series connection are first five level output frequency converter unit, the second controllable switch S 2, the 4th controllable switch S 4, the second series circuit that the 6th controllable switch S 6 and the 8th controllable switch S 8 series connection are first five level output frequency converter unit, the first capacitor C 1 is connected between two nodes of Centroid both sides of the first series circuit of first five level output frequency converter unit, the second capacitor C 2 is connected between two nodes of Centroid both sides of the second series circuit of first five level output frequency converter unit, two ends after the second series circuit parallel connection of the first series circuit of first five level output frequency converter unit and first five level output frequency converter unit are the power output end Vout1 of first five level output frequency converter unit, the structure of second five level output frequency converter unit (five level output frequency converter units below in figure) is: by the 9th controllable switch S 9, the tenth controllable switch S 10, the 11 controllable switch S 11, the 12 controllable switch S 12, the 13 controllable switch S 13, the 14 controllable switch S 14, the 15 controllable switch S 15, the 16 controllable switch S 16, the 3rd capacitor C 3 and the 4th capacitor C 4 form, wherein, the 9th controllable switch S 9, the 11 controllable switch S 11, the 13 controllable switch S 13 and the 15 controllable switch S 15 series connection are the first series circuit of second five level output frequency converter unit, the tenth controllable switch S 10, the 12 controllable switch S 12, the 14 controllable switch S 14 and the 16 controllable switch S 16 series connection are the second series circuit of second five level output frequency converter unit, the 3rd capacitor C 3 is connected between two nodes of Centroid both sides of the first series circuit of second five level output frequency converter unit, the 4th capacitor C 4 is connected between two nodes of Centroid both sides of the second series circuit of second five level output frequency converter unit, two ends after the second series circuit parallel connection of the first series circuit of second five level output frequency converter unit and second five level output frequency converter unit are the power output end Vout2 of second five level output frequency converter unit.
As shown in Figure 1, separate between the power output end Vout1 of first five level output frequency converter unit and the power output end Vout2 of second five level output frequency converter unit; Syndeton between first five level output frequency converter unit and second five level output frequency converter unit is: the Centroid of the first series circuit of first five level output frequency converter unit is connected with the Centroid of the second series circuit of second five level output frequency converter unit; The Centroid of the first series circuit of the Centroid of the second series circuit of first five level output frequency converter unit and second five level output frequency converter unit is respectively the two ends of the power input Vin of described cascade 5 level output capacitance clamp bridge-type frequency converter.
As shown in Figure 1, gate-controlled switch comprises a triode and a diode, the emitter of triode is connected with the positive pole of diode, the collector electrode of triode is connected with the negative pole of diode, the transmitting of triode is the first end of gate-controlled switch very, the current collection of triode is the second end of gate-controlled switch very, the control input end that the base stage of triode is gate-controlled switch.The structure of above-mentioned gate-controlled switch is conventional structure, so the symbol of mark triode and diode in the drawings not.
By the control to the base signal of each gate-controlled switch, realize the open and close state of each gate-controlled switch, thereby export varying level, then by these level, be combined as the power supply of different frequency.Any time, one of be+2E of out-put supply Vout ,+E ,-E ,-2E and zero level of each five level output frequency converter unit, so be called five level outputs.Whole cascade 5 level output capacitance clamp bridge-type frequency converter comprises a plurality of five level output frequency converter units, can carry out series and parallel combination, thereby realizes the more power supply output of multivoltage and frequency.
Claims (2)
1. a cascade 5 level output capacitance clamp bridge-type frequency converter, it is characterized in that: comprise the five level output frequency converter units that a plurality of structures are identical, described in each, the structure of five level output frequency converter units is: eight identical gate-controlled switch and two electric capacity of structure, consist of, wherein four described gate-controlled switch series connection are the first series circuit, other four described gate-controlled switch series connection are the second series circuit, described in one of them, electric capacity is connected between two nodes of Centroid both sides of described the first series circuit, described in another, electric capacity is connected between two nodes of Centroid both sides of described the second series circuit, two ends after described the first series circuit and described the second series circuit parallel connection are the power output end that corresponding described five level are exported frequency converter units, described in each, the power output end of five level output frequency converter units is separate, syndeton between adjacent described five level output frequency converter units is: the Centroid of the first series circuit of previous described five level output frequency converter units is connected with the Centroid of the second series circuit of rear described five level output frequency converter units, described in first Centroid of the second series circuit of five level output frequency converter units and described in last the Centroid of the first series circuit of five level output frequency converter units be respectively the two ends of the power input of described cascade 5 level output capacitance clamp bridge-type frequency converter.
2. cascade 5 level output capacitance clamp bridge-type frequency converter according to claim 1, it is characterized in that: described gate-controlled switch comprises a triode and a diode, the emitter of described triode is connected with the positive pole of described diode, the collector electrode of described triode is connected with the negative pole of described diode, the first end of the very described gate-controlled switch of the transmitting of described triode, the second end of the very described gate-controlled switch of the current collection of described triode, the control input end that the base stage of described triode is described gate-controlled switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210352907.5A CN103684017A (en) | 2012-09-21 | 2012-09-21 | Cascaded five-level output capacitor clamping bridge type frequency converter |
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| CN201210352907.5A CN103684017A (en) | 2012-09-21 | 2012-09-21 | Cascaded five-level output capacitor clamping bridge type frequency converter |
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| CN103684017A true CN103684017A (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017038294A1 (en) * | 2015-08-28 | 2017-03-09 | 株式会社村田製作所 | Dc-dc converter |
| JPWO2018159437A1 (en) * | 2017-03-14 | 2020-04-16 | 株式会社村田製作所 | DC-DC converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195558A (en) * | 2010-03-16 | 2011-09-21 | 施耐德东芝换流器欧洲公司 | Capacitance-less multi-level variable speed driver and control method thereof |
| US20120218795A1 (en) * | 2011-02-28 | 2012-08-30 | Siemens Corporation | Pulse width modulated control for hybrid inverters |
| CN202872684U (en) * | 2012-09-21 | 2013-04-10 | 成都市思博睿科技有限公司 | Cascade five-level output capacitor clamped bridge type frequency converter |
-
2012
- 2012-09-21 CN CN201210352907.5A patent/CN103684017A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195558A (en) * | 2010-03-16 | 2011-09-21 | 施耐德东芝换流器欧洲公司 | Capacitance-less multi-level variable speed driver and control method thereof |
| US20120218795A1 (en) * | 2011-02-28 | 2012-08-30 | Siemens Corporation | Pulse width modulated control for hybrid inverters |
| CN202872684U (en) * | 2012-09-21 | 2013-04-10 | 成都市思博睿科技有限公司 | Cascade five-level output capacitor clamped bridge type frequency converter |
Non-Patent Citations (2)
| Title |
|---|
| 李建林 等: "级联H桥五电平变流器工况分析与验证", 《电工技术学报》, vol. 22, no. 4, 30 April 2007 (2007-04-30), pages 85 - 91 * |
| 胡书举 等: "基于电容箝位五电平H桥的逆变器应用", 《高电压技术》, vol. 34, no. 9, 30 September 2008 (2008-09-30), pages 1932 - 1939 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017038294A1 (en) * | 2015-08-28 | 2017-03-09 | 株式会社村田製作所 | Dc-dc converter |
| JPWO2017038294A1 (en) * | 2015-08-28 | 2018-06-07 | 株式会社村田製作所 | DC-DC converter |
| US10171004B2 (en) | 2015-08-28 | 2019-01-01 | Murata Manufacturing Co., Ltd. | DC-DC converter |
| JPWO2018159437A1 (en) * | 2017-03-14 | 2020-04-16 | 株式会社村田製作所 | DC-DC converter |
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