Title:
ROTARY ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/017267
Kind Code:
A1
Abstract:
This rotary electric machine (10) has: an annular stator (30) in which an armature winding (32) is wound around a stator core (31); and a rotor (40) disposed on the inner peripheral side of the stator, wherein the permeance (Pst) of a q-axis magnetic circuit is larger than the permeance (Prt) of a d-axis magnetic circuit. The rotary electric machine is provided with a control unit (55) and switches (53a, 56b) for supplying power to a field winding (43). The control unit calculates a duty ratio under the condition that the upper limit of the duty ratio of the switches is a predetermined value, and turns the switches on and off on the basis of the calculated duty ratio. The predetermined value is set to a value greater than the duty ratio corresponding to the field current at which the amount of decrease in the inductance of the field winding with respect to the amount of increase in field current is a maximum value for the allowable range of values of the field current.
Inventors:
TAKAHASHI YUKI (JP)
Application Number:
PCT/JP2018/026283
Publication Date:
January 24, 2019
Filing Date:
July 12, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P9/30; H02K1/24; H02P101/25; H02P101/45; H02P103/20
Foreign References:
| JP2009165232A | 2009-07-23 | |||
| JPH04255451A | 1992-09-10 | |||
| JP2009148057A | 2009-07-02 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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