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Title:
CONTROLLER OF ROTATING ELECTRICAL MACHINE
Document Type and Number:
Japanese Patent JP2008206343
Kind Code:
A
Abstract:

To accurately set an angle for a switching operation based on zero cross timing in which an induced voltage of a rotating electric machine becomes a reference voltage when a rotational speed varies in controlling the rotating electric machine by operating switching devices for a power converting circuit.

For the specified timing which is delayed by a predetermined angle from the zero cross timing in which the induced voltage of a brushless motor 10 meets the reference voltage vref, the switching devices SW1 to SW6 are switched. At this time, a prescribed time from the previous zero cross timing to the specified timing is set based on the interval of the previous two zero cross timings. However, the required time is corrected corresponding to the variation amount when the rotational speed of the brushless motor 10 varies.


Inventors:
KURODA MASAHIRO
AZUMA HIDEJI
UEDA NOBUTADA
AKAMA SADAHIRO
OSADA KIYOSHI
OTAKE AKIYA
Application Number:
JP2007000040958
Publication Date:
September 04, 2008
Filing Date:
February 21, 2007
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H02P6/18; H02P6/06; H02P6/08; H02P6/182
Domestic Patent References:
JPH1189274A1999-03-30
JPH08258793A1996-10-08
JPH10271882A1998-10-09
JP2005278360A2005-10-06
JP2001197768A2001-07-19
JP2000245190A2000-09-08
JP2006166587A2006-06-22
JP2005253226A2005-09-15
JPH05254223A1993-10-05
Attorney, Agent or Firm:
山田 強