Title:
インバータ制御装置
Document Type and Number:
Japanese Patent JP4139852
Kind Code:
B1
Abstract:
To suppress an unbalance of a dwell period in a changeover of phases in which switching is dwelled in an inverter controller. A PWM operation unit 5 includes a modulation-wave generating unit 11 that generates a modulation wave as a voltage command value to an inverter main circuit 2, a carrier-wave generating unit 12 that generates a carrier wave used as a reference for a switching command, and a comparing unit 13 that compares the modulation wave generated by the modulation-wave generating unit 11 and the carrier wave generated by the carrier-wave generating unit 12. During an operation in a two-phase modulation mode in which switching of any one of three phases configuring the inverter main circuit 2 is dwelled, the PWM operation unit 5 controls the carrier-wave generating unit 12 to set a carrier wave frequency to an integral multiple of a modulation wave frequency.
Inventors:
Naonori Yamazaki
Application Number:
JP2007551406A
Publication Date:
August 27, 2008
Filing Date:
April 20, 2007
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02M7/00
Domestic Patent References:
| JP2007082355A | ||||
| JP2006230079A | ||||
| JP1227663A | ||||
| JP2005535277A |
Other References:
社団法人電気学会 交流電動機駆動方式の技術分類・用語整理調査専門委員会,交流電動機可変速駆動の基礎と応用,日本,株式会社コロナ社,2003年 6月10日,初版第2刷,P64-67
社団法人電気学会,半導体電力変換回路,日本,社団法人電気学会,1995年 5月25日,8版,P108-112
社団法人電気学会,半導体電力変換回路,日本,社団法人電気学会,1995年 5月25日,8版,P108-112
Attorney, Agent or Firm:
Hiroaki Sakai
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