Title:
PM MOTOR DRIVING POWER UNIT
Document Type and Number:
WIPO Patent Application WO/2009/157097
Kind Code:
A1
Abstract:
A PM motor driving power unit drives a three-phase PM motor by a direct current power source (1), wherein a controlling means (7) controls reverse conducting semiconductor switches (S1-S4) in pulse voltage generating means (2) so as to cause ON/OFF operations of each diagonally-positioned pair of the switches (S1-S4) to occur simultaneously, controls three-row switches in polarity switching means (5) so as to cause ON/OFF operations of the three-row switches to occur alternately at the same timing as those of the reverse conducting semiconductor switches (S1-S4) in the pulse voltage generating means (2), selects a switch in the polarity switching means (5) based on a rotational position signal, converts a direct current pulse output from the pulse voltage generating means (2) into a polarity of a three-phase alternating current, and supply it as a driving current to the PM motor (4).
Inventors:
SHIMADA RYUICHI (JP)
Application Number:
PCT/JP2008/062122
Publication Date:
December 30, 2009
Filing Date:
June 27, 2008
Export Citation:
Assignee:
TOKYO INST TECH (JP)
SHIMADA RYUICHI (JP)
SHIMADA RYUICHI (JP)
International Classes:
H02P27/06
Foreign References:
| JP2000358359A | 2000-12-26 | |||
| JP2004260991A | 2004-09-16 | |||
| JP2000032739A | 2000-01-28 | |||
| JP2007252048A | 2007-09-27 | |||
| JP2007188646A | 2007-07-26 |
Attorney, Agent or Firm:
AGATA, Yuzo (Akasaka 2-ChomeMinato-Ku, Tokyo 52, JP)
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