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Magnet temperature estimating device for rotating electric machine and magnet temperature estimating method for rotating electric machine

A technology of rotating electrical machines and inferring devices, which is applied in the direction of temperature measurement, electromechanical devices, and electrical devices in motors, can solve problems such as the increase of magnet temperature calculation errors, and achieve the effect of improving calculation accuracy.

Active Publication Date: 2018-08-24
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a concern that the calculation error of the magnet temperature will increase due to the flow path of the coolant inside the motor and the cooling state.

Method used

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  • Magnet temperature estimating device for rotating electric machine and magnet temperature estimating method for rotating electric machine
  • Magnet temperature estimating device for rotating electric machine and magnet temperature estimating method for rotating electric machine
  • Magnet temperature estimating device for rotating electric machine and magnet temperature estimating method for rotating electric machine

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Embodiment Construction

[0041] Hereinafter, a magnet temperature estimation device for a rotating electric machine and a magnet temperature estimation method for a rotating electric machine according to an embodiment of the present invention will be described with reference to the drawings.

[0042] The magnet temperature estimating device 10 for a rotating electrical machine according to the present embodiment is installed in a vehicle 1 such as a hybrid vehicle or an electric vehicle, for example. Such asfigure 1 As shown, the vehicle 1 includes a drive motor (M) 11 (rotary electric machine), a power generation motor (G) 12 , a transmission (T / M) 13 , a refrigerant circulation unit 14 (refrigerant supply unit), and a power conversion unit 15 , storage battery 16 and control device 17.

[0043] Both the drive motor 11 and the generator motor 12 are, for example, three-phase AC brushless DC motors or the like. Both the driving motor 11 and the generating motor 12 have rotating shafts connected to th...

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Abstract

A magnet temperature estimating device for a rotating electrical machine includes: a rotating electrical machine including a rotor having magnets and a stator having coils; a refrigerant supply unit that supplies refrigerant flowing from the stator to the rotor; and a magnet temperature calculation unit that The temperature of the magnet is calculated using the temperature of the refrigerant heated from the coil.

Description

technical field [0001] The present invention relates to a magnet temperature estimation device for a rotating electric machine and a magnet temperature estimation method for a rotating electric machine. [0002] This application claims priority based on Japanese Patent Application No. 2014-098125 for which it applied on May 9, 2014, and uses the content here. Background technique [0003] Conventionally, there is known a motor control device that calculates the magnet temperature based on the stator coil temperature, the liquid temperature of the coolant, the heat generation ratio, and the thermal resistance ratio during motor operation (for example, refer to Patent Document 1). This motor control device obtains in advance the ratio of the thermal resistance between the coolant and the stator coil to the thermal resistance between the stator coil and the permanent magnet as the thermal resistance ratio, and obtains the ratio of the heat generation of the stator coil to the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/25
CPCG01K7/42G01K13/08H02P29/60H02P29/66G01K2205/00H02K9/19H02K1/32H02K9/00G01K13/026H02K11/25G01K13/02G01K17/06
Inventor 松原宗弘伊东悠太
Owner HONDA MOTOR CO LTD