Invention Grant
- Patent Title: Three-level inverter employing a bidirectional switch, and modular structure therefor
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Application No.: US14877318Application Date: 2015-10-07
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Publication No.: US09705313B2Publication Date: 2017-07-11
- Inventor: Ryuji Yamada , Koji Maruyama , Takaaki Tanaka
- Applicant: FUJI ELECTRIC CO., LTD.
- Applicant Address: JP Kawasaki-Shi
- Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee Address: JP Kawasaki-Shi
- Agency: Rabin & Berdo, P.C.
- Main IPC: H02M7/5387
- IPC: H02M7/5387 ; H02H9/02 ; H02M7/487 ; H02M7/537 ; H02M3/156 ; H02M1/00

Abstract:
A series circuit of capacitors and a series circuit of semiconductor switches such as SiC-MOSFETs are connected in parallel to a direct current power source, and one end of a bidirectional switch formed of semiconductor switches, such as IGBTs, and diodes, such as SiC-SBDs (Silicon Carbide Schottky Barrier Diodes), is connected to a series connection point (an M point) of the capacitors, while the other end of the bidirectional switch is connected to a series connection point of the semiconductor switches, in a three-level inverter that outputs three voltage levels by operating the semiconductor switches so as to satisfy at least one of the condition that the peak value of an alternating current output voltage Vo is a value of 80% or more of the voltage of the capacitors and the condition that an output power factor is 0.8 or more.
Public/Granted literature
- US20160028224A1 THREE-LEVEL INVERTER Public/Granted day:2016-01-28
Information query
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