Title:
CONTROL DEVICE FOR ROTARY ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/087832
Kind Code:
A1
Abstract:
A control device (60) is used in a control system provided with: a rotary electric machine (30) having stator windings (34U to 34W); and an inverter (40) that has switches (SUp-SWn) and drives the switches to transmit electric power between a DC power supply (20) and the stator windings. The control device is provided with: a first control unit that performs switching control of the switches; a second control unit that performs switching control of the switches at a switching frequency that differs from the switching frequency of the switches by the first control unit; and a switching unit that, if it is determined that the rotational speed of the rotary electric machine is at or above a high rotation side threshold (Nth2), switches from switching control by the second control unit to switching control by the first control unit, and if it is determined that the rotational speed of the rotary electric machine is at or below a low rotation side threshold (Nth1), which is smaller than the high rotation side threshold, switches from switching control by the first control unit to switching control by the second control unit.
Inventors:
KOJIMA KAZUAKI (JP)
SUZUKI TAKUTO (JP)
KAWAMURA TAKUYA (JP)
SUZUKI TAKUTO (JP)
KAWAMURA TAKUYA (JP)
Application Number:
PCT/JP2018/039077
Publication Date:
May 09, 2019
Filing Date:
October 19, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P9/04; H02P101/25; H02P101/45; H02P103/20
Domestic Patent References:
| WO2016006386A1 | 2016-01-14 |
Foreign References:
| JP2016527436A | 2016-09-08 | |||
| JP2004015847A | 2004-01-15 | |||
| JP2008199844A | 2008-08-28 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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