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Title:
HIGH-VOLTAGE-GAIN FIVE-LEVEL INVERTER TOPOLOGICAL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2017/028776
Kind Code:
A1
Abstract:
A high-voltage-gain five-level inverter topological circuit. A single-phase five-level inverter topological circuit comprises a half-bridge inverter circuit, and the half-bridge inverter circuit comprises a flying capacitor (Cs) and outputs five different levels comprising a zero level. The single-phase five-level inverter topological circuit adopts a five-level half-bridge structure, and only needs one alternating-current filter inductor (L1), thereby reducing the cost and the volume of a system, completely removing leak current, and having high efficiency and high stability. Under the same running condition, the voltage utilization rate of the high-voltage-gain five-level inverter topological circuit is twice of that of an existing half-bridge five-level inverter topological circuit; and neutral-point voltage at the direct current side can be automatically balanced without an additional circuit.

Inventors:
WANG HONGLIANG (CN)
LIU YANFEI (CA)
Application Number:
PCT/CN2016/095363
Publication Date:
February 23, 2017
Filing Date:
August 15, 2016
Export Citation:
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Assignee:
WANG HONGLIANG (CN)
LIU YANFEI (CA)
International Classes:
H02M7/483
Foreign References:
CN102510232A2012-06-20
CN104218832A2014-12-17
CN101980437A2011-02-23
CN102769401A2012-11-07
JP2013258791A2013-12-26
US20130301314A12013-11-14
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
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