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Electronic Apparatus

A technology for electronic equipment and circuits, applied in the field of electronic equipment, can solve problems such as difficulty in detecting short circuits

Active Publication Date: 2016-06-15
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, it is difficult to detect short circuits differently from ground faults

Method used

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Examples

Experimental program
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no. 1 example

[0015] First, the following will refer to figure 1 The configuration of the electric power steering apparatus according to the first embodiment is described.

[0016] figure 1 An electric power steering device 1 (corresponding to an electronic device) illustrated in is mounted to a vehicle, and assists steering of a steering wheel. The electric power steering apparatus 1 includes a motor 10 (corresponding to a rotating electric machine), a capacitor 11 , inverter circuits 12 and 13 , and a control circuit 14 .

[0017] The electric motor 10 is a machine that generates torque for assisting steering of the steering wheel. The motor 10 includes three-phase winding sets 100 , 101 (corresponding to multi-phase windings) and a rotation angle sensor 102 .

[0018] The three-phase winding sets 100, 101 are members that generate a rotating magnetic field for rotating a rotor (not shown) by the flow of three-phase alternating current (corresponding to multi-phase alternating current)...

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Abstract

The invention discloses an electronic apparatus(10) includes a rotating electric machine that has a plurality of multi-phase winding sets(100,101), each of which has a plurality of phase windings; a plurality of inverter circuits(12,13) that are connected to the plurality of multi-phase winding sets respectively; and a control circuit(14) that controls the plurality of inverter circuits such that a multi-phase alternating current is supplied to each of the plurality of multi-phase winding sets from each of the plurality of inverter circuits. The control circuit determines that a short circuit occurs when i) a plurality of phase current added values obtained by adding each phase current flowing through each of the plurality of phase windings calculated at each of the plurality of multi-phase winding sets; and ii) an absolute value of a total phase current added value obtained by adding all of the plurality of phase current added values is smaller than a predetermined value.

Description

technical field [0001] The present disclosure relates to an electronic device including: a rotating electric machine having a plurality of multi-phase winding sets; and a plurality of inverters respectively provided for and connected to the plurality of multi-phase winding sets respectively. converter circuit. Background technique [0002] For example, an electric power steering apparatus disclosed in Japanese Unexamined Patent Application Publication No. 2013-165541 has been configured as an electronic apparatus including: a rotating electric machine having a plurality of multiphase winding sets; The phase winding sets are respectively provided and are respectively connected to a plurality of inverter circuits of the plurality of multi-phase winding sets. [0003] An electric power steering apparatus includes: a motor; a first inverter unit and a second inverter unit; and a control unit. An electric motor includes a first winding assembly and a second winding assembly. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02P29/024
CPCG01R31/007G01R31/343G01R31/42G01R31/52H02H7/1227H02P25/22H02P29/0241B62D5/0457H02P27/06H02P29/024
Inventor 林二郎
Owner DENSO CORP