CN1832323A - Five-level converter structure device - Google Patents

Five-level converter structure device Download PDF

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Publication number
CN1832323A
CN1832323A CNA2006100438026A CN200610043802A CN1832323A CN 1832323 A CN1832323 A CN 1832323A CN A2006100438026 A CNA2006100438026 A CN A2006100438026A CN 200610043802 A CN200610043802 A CN 200610043802A CN 1832323 A CN1832323 A CN 1832323A
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China
Prior art keywords
circuit
brachium pontis
level converter
structure device
level
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CNA2006100438026A
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Chinese (zh)
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CN100466448C (en
Inventor
李瑞来
尹彭飞
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Shandong Xinfengguang Electronic Technology Development Co., Ltd.
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Shandong Xinfeng Photoelectric Science & Technology Development Co Ltd
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Priority to CNB2006100438026A priority Critical patent/CN100466448C/en
Publication of CN1832323A publication Critical patent/CN1832323A/en
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Publication of CN100466448C publication Critical patent/CN100466448C/en
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Abstract

This invention relates to a five-level converter structure device, which adds an assistant bridge arm on a three-level primary circuit, in which, the assistant bridge arm is parallel between an absorption condenser and the bridge arm of the three-level primary circuit and several serially connected power devices are parallel to several clamping diodes to make up of the assistant bridge arm.

Description

A kind of five-level converter structure device
(1) technical field under
The present invention relates to a kind of five-level converter structure device, belong to the technical field of electronic converter.
(2) background technology
In five traditional level circuit structures, for three-phase system, if adopt electronic switch, then electronic switch is more, it needs 24 at least, each needs 8 mutually, and the electric capacity number is also bigger simultaneously, generally needs four at least, make that switching device quantity is many, the fault point height, to big volume change the time, shortcoming such as harmonic problem is outstanding under the low switching frequency.
(3) summary of the invention
The present invention provides the five-level converter structure device that a kind of components and parts are few, control is simple, failure rate is low in order to overcome the deficiency of above technology.
The present invention realizes by following measure:
Five-level converter structure device of the present invention, be to change at three level main transformers to increase an auxiliary brachium pontis on the circuit, auxiliary brachium pontis is connected in parallel between the brachium pontis that absorbs electric capacity and three level translation main circuits, and described auxiliary brachium pontis is made up of several power device series connection back several catching diodes in parallel.
Five-level converter structure device of the present invention is connected with the transformer of 1:K between the main converter central point, be coupled between the mid point of transformer and main converter, to reach the effect of eliminating particular harmonic.
Five-level converter structure device of the present invention, the operating frequency of described auxiliary brachium pontis are 3 times that main transformer changes fundamental frequency in the circuit.
Five-level converter structure device of the present invention, its circuit structure can be single bridge arm circuit of the auxiliary brachium pontis of band; Or the doube bridge arm circuit of the auxiliary brachium pontis of band; Or many bridge arm circuit of the auxiliary brachium pontis of band.
In the five-level converter structure device of the present invention, reduce component number, reduced cost, strengthened the stability of circuit.
(4) description of drawings
Accompanying drawing is the doube bridge arm circuit diagram of the auxiliary brachium pontis of band of the present invention.Among the figure: 1-power model 2-assists brachium pontis 3-transformer 4-brachium pontis
(5) embodiment
Below in conjunction with the drawings and specific embodiments the present invention is made specific description.
Accompanying drawing is the doube bridge arm circuit diagram of the auxiliary brachium pontis of band of the present invention.
Auxiliary brachium pontis 2 is made up of four power device ug1, ug2, ug3, ug4 and two diode D1 and D2.But the power model 1 of this accompanying drawing can be the device of multiple rate of doing work switch, here be example with power model IGBT, sort circuit is present between the positive and negative busbar behind the direct current, 4 power device ug1, ug2, ug3, drain electrode and the source electrode of ug4 are connected mutually, the power device ug1 of series connection and 1 a between the power device ug2, the power device ug3 of series connection and 1 b point between the power device ug4, at a, between the b in parallel one by diode D1 and the positive and negative clamped circuit that is composed in series of D2, the negative pole of diode D1 connects a point, the positive pole of diode D2 connects the b point, two capacitor C 1 of series connection mutually in parallel between the positive and negative busbar of direct current Vdc, the absorption filter circuit that C2 forms.
Equally the circuit of being made up of the power device of four series connection and two diode in series is called a brachium pontis 4, and such brachium pontis 4 has two, all is connected in parallel in the middle of the positive and negative busbar after direct current absorbs capacitor C 1 and C2, and brachium pontis 4 is positioned at the back of assisting brachium pontis 2.
Also has a transformer 3 in the middle of the circuit, the two elementary absorption capacitor C 1 that are connected two series connection of transformer 3, the centre of C2, A point in the middle of the power model of one termination ug2 of 3 levels of transformer and ug3 series connection, another time utmost point of transformer T connects B point and the catching diode D5 of second brachium pontis and the D point of the clamped circuit that D6 forms of the catching diode of first brachium pontis D3 and D4 composition, mid point C at first brachium pontis and second brachium pontis, the E point is respectively drawn a phase output terminal U and a V, on three-level converter, increase an auxiliary brachium pontis 2, its operating frequency is that 3 times main transformer changes the fundamental frequency in the circuit, transformer T with 1:K between the central point of AC-AC converter is coupled, and reaches harmonic carcellation.Produce in the work: Vdc/2, KVdc/2,0 ,-five kinds of level of KVdc/2, Vdc/2.
Sort circuit has reduced components and parts, has reduced cost, has strengthened the stability of circuit.

Claims (6)

1. five-level converter structure device, it is characterized in that: be to change at three level main transformers to increase an auxiliary brachium pontis (2) on the circuit, auxiliary brachium pontis (2) is connected in parallel on absorption electric capacity and three level main transformers change between the brachium pontis (4) of circuit, and described auxiliary brachium pontis (2) is made up of several power devices series connection back several catching diodes in parallel.
2. five-level converter structure device according to claim 1 is characterized in that: be connected with the transformer of 1:K between the main converter central point, be coupled between the mid point of transformer and main converter.
3. five-level converter structure device according to claim 1 and 2 is characterized in that: the operating frequency of described auxiliary brachium pontis (2) is 3 times that main transformer changes fundamental frequency in the circuit.
4. five-level converter structure device according to claim 1 and 2 is characterized in that: its circuit structure is single bridge arm circuit.
5. five-level converter structure device according to claim 1 and 2 is characterized in that: its circuit structure is a doube bridge arm circuit.
6. five-level converter structure device according to claim 1 and 2 is characterized in that: its circuit structure is many bridge arm circuit.
CNB2006100438026A 2006-04-17 2006-04-17 Five-level converter structure device Active CN100466448C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100438026A CN100466448C (en) 2006-04-17 2006-04-17 Five-level converter structure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100438026A CN100466448C (en) 2006-04-17 2006-04-17 Five-level converter structure device

Publications (2)

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CN1832323A true CN1832323A (en) 2006-09-13
CN100466448C CN100466448C (en) 2009-03-04

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100438303C (en) * 2006-10-20 2008-11-26 南京航空航天大学 Five-level double step-down full bridge inverter
CN101902142A (en) * 2010-07-26 2010-12-01 南京航空航天大学 Diode clamping five-level dual buck half-bridge inverter
CN101944839A (en) * 2010-09-28 2011-01-12 中国科学院电工研究所 Single-phase five-level power inverter
CN102882409A (en) * 2012-10-10 2013-01-16 中国科学院电工研究所 Single-phase nine-level power converter based on coupling inductors
CN103346690A (en) * 2013-07-05 2013-10-09 华为技术有限公司 Multi-level inverter and power supply system
CN103684012A (en) * 2012-09-21 2014-03-26 成都市思博睿科技有限公司 Independent five-level output capacitor-clamped bridge-type frequency converter
CN107565841A (en) * 2017-01-17 2018-01-09 湖南大学 A kind of clamper cascade frequency multiplication multi-level power converter and its control method
US10177683B2 (en) 2015-09-29 2019-01-08 Huawei Technologies Co., Ltd. Multi-level inverter

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CN106329975B (en) 2015-07-10 2019-02-12 台达电子企业管理（上海）有限公司 Five LCU level conversion units
CN106329974B (en) 2015-07-10 2018-12-21 台达电子企业管理（上海）有限公司 Five LCU level conversion units

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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US6058031A (en) * 1997-10-23 2000-05-02 General Electric Company Five level high power motor drive converter and control system
JP3844050B2 (en) * 2001-07-02 2006-11-08 株式会社安川電機 Power converter
CN1464627A (en) * 2002-06-21 2003-12-31 长沙市为尔自动化技术开发有限公司 Hybrid five-level high-voltage frequency converter
CN2666031Y (en) * 2003-11-26 2004-12-22 山东风光电子有限责任公司 Five-levels bidirectional inverted middle and high voltage frequency conversion power supply device
CN100386959C (en) * 2004-12-16 2008-05-07 西安交通大学 Five-level high-frequency DC. converter
CN2894074Y (en) * 2006-04-17 2007-04-25 山东新风光电子科技发展有限公司 Five level converter structural apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100438303C (en) * 2006-10-20 2008-11-26 南京航空航天大学 Five-level double step-down full bridge inverter
CN101902142A (en) * 2010-07-26 2010-12-01 南京航空航天大学 Diode clamping five-level dual buck half-bridge inverter
CN101902142B (en) * 2010-07-26 2013-03-06 南京航空航天大学 Diode clamping five-level dual buck half-bridge inverter
WO2012041020A1 (en) * 2010-09-28 2012-04-05 中国科学院电工研究所 Single-phase five-level power converter
CN101944839B (en) * 2010-09-28 2012-11-07 中国科学院电工研究所 Single-phase five-level power inverter
CN101944839A (en) * 2010-09-28 2011-01-12 中国科学院电工研究所 Single-phase five-level power inverter
CN103684012A (en) * 2012-09-21 2014-03-26 成都市思博睿科技有限公司 Independent five-level output capacitor-clamped bridge-type frequency converter
CN102882409A (en) * 2012-10-10 2013-01-16 中国科学院电工研究所 Single-phase nine-level power converter based on coupling inductors
CN103346690A (en) * 2013-07-05 2013-10-09 华为技术有限公司 Multi-level inverter and power supply system
CN103346690B (en) * 2013-07-05 2016-03-30 华为技术有限公司 A kind of multi-electrical level inverter and electric power system
US9385632B2 (en) 2013-07-05 2016-07-05 Huawei Technologies Co., Ltd. Multi-level inverter and power supply system
US10177683B2 (en) 2015-09-29 2019-01-08 Huawei Technologies Co., Ltd. Multi-level inverter
CN107565841A (en) * 2017-01-17 2018-01-09 湖南大学 A kind of clamper cascade frequency multiplication multi-level power converter and its control method

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Owner name: XINFENGGUANG ELECTRONICS TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: SHANDONG XINFENG PHOTOELECTRIC SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD.

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Address after: County Road 272500 square Shandong city of Jining province Wenshang County No. 2

Patentee after: Shandong Xinfengguang Electronic Technology Development Co., Ltd.

Address before: County Road 272500 square Shandong city of Jining province Wenshang County No. 2

Patentee before: Shandong Xinfeng Photoelectric Science & Technology Development Co., Ltd.