Title:
INVERTER DEVICE
Document Type and Number:
Japanese Patent JP3641793
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inverter device which can realize large capacity, low loss, high reliability and size reduction at the same time by using large capacity self-extinguishing semiconductor devices.
SOLUTION: Energy stored in the current changing rate suppressing device groups 9a-9b of a 2-level or 3-level inverter bridge is recovered by recovering capacitors 11a-11c and regenerated to a DC voltage circuit 1 by an energy regenerative circuit 12. The energy regenerative circuit controls the charging currents of the recovering capacitor in proportion to the value of a load current. When a plurality of inverter bridges are connected to the same DC voltage circuit, the plurality of inverter bridges are divided into a plurality of groups, different energy regenerative circuits are connected to the inverter bridges of the respective groups, and the respective energy regenerative circuits regenerate energy to the DC voltage circuit.
Inventors:
Hideo Okayama
Taichiro Tsuchiya
Hiroaki Yamaguchi
Taichiro Tsuchiya
Hiroaki Yamaguchi
Application Number:
JP1269699A
Publication Date:
April 27, 2005
Filing Date:
January 21, 1999
Export Citation:
Assignee:
Toshiba Mitsubishi Electric Industrial Systems Co., Ltd.
International Classes:
H02M7/48; H02M7/483; H02M7/521; H02M7/5387; (IPC1-7): H02M7/5387; H02M7/48
Domestic Patent References:
| JP10285953A | ||||
| JP9182460A | ||||
| JP7067353A |
Foreign References:
| WO1997033362A1 |
Attorney, Agent or Firm:
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami
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