Apparatus for controlling motor

一种控制单元、电流的技术，应用在电机的装置领域，能够解决旋转负载变大、变大等问题

Active Publication Date: 2017-10-20
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the rotational load of the rotor becomes large, and the resistance loss due to the cooling oil (that is, the loss due to the rotational load due to the cooling oil) becomes large.

Method used

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  • Apparatus for controlling motor
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  • Apparatus for controlling motor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042] will refer to Figures 1 to 5 A first embodiment of the present invention is described.

[0043] First refer to figure 1 , a schematic configuration of a control system of a hybrid vehicle will be described.

[0044] An engine 11 serving as a power source of the vehicle and a transmission 12 connected to the engine 11 are mounted on the front of the vehicle. The transmission 12 is a mechanical transmission, and may be a multi-stage transmission that switches gears in stages between a plurality of gears, or may be a continuously variable transmission (so-called CVT) that continuously changes gears. The engine 11 and the transmission 12 are arranged laterally such that the axial direction of the output shaft of the engine 11 (ie, the crankshaft) becomes the left-right direction of the vehicle. The power of the output shaft of the engine 11 is transmitted to the transmission 12 , and the power of the output shaft of the transmission 12 is transmitted to the drive shaft ...

no. 2 example

[0076] Next, we will use Figure 6 to Figure 9 A second embodiment of the present invention will be described. However, descriptions of portions substantially the same as or similar to those of the first embodiment described above will be omitted or simplified, and portions different from the first embodiment described above will be mainly described.

[0077] In the second embodiment, the MG-ECU 24 executes Figure 9 The mode switching routine of , thereby switching the normal mode and the warming mode as follows. When the temperature of the cooling oil 30 detected by the cooling oil temperature sensor 32 is the predetermined value A (ie, the first predetermined value) or below, the normal mode is switched to the heating mode, and when the cooling oil temperature detected by the cooling oil temperature sensor 32 is The temperature raising mode is switched to the normal mode when the temperature of the oil 30 is a predetermined value B higher than the predetermined value A (i...

no. 3 example

[0096] Next, we will use Figure 10 to Figure 12 A third embodiment of the present invention will be described. However, descriptions of parts substantially the same as or similar to those of the second embodiment described above will be omitted or simplified, and parts different from the second embodiment described above will be mainly described.

[0097] In this third embodiment, if Figure 10 As shown, a coil temperature sensor 38 for detecting the temperature of the coil 29 is provided in the housing 25 of the MG 16 . like Figure 11 As shown, there is a correlation between the temperature of the coil 29 and the temperature of the cooling oil 30 .

[0098] Therefore, in this third embodiment, the MG-ECU 24 executes Figure 12 The mode switching routine of , thereby switching the normal mode and the warming mode as follows. When the temperature of the coil 29 detected by the coil temperature sensor 38 is a predetermined value C (that is, the third predetermined value) ...

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PUM

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Abstract

An apparatus (16) for controlling a motor having a housing (25) in which a stator (28) and a rotor (27) are disposed. The motor is cooled by a cooling oil (30) in the housing. The apparatus includes a control unit (24) configured to control the motor. The control unit (24) has a temperature increase mode for heating the cooling oil (29) with use of heat generated by a resistance of a coil (29) provided in the stator.

Description

technical field [0001] The invention relates to a device for controlling an electric machine cooled by cooling oil in a housing. Background technique [0002] A technique for preventing motor overheating is disclosed, for example, in JP-A-2013-85388. The technique of JP-A-2013-85388 is provided with an oil temperature sensor for detecting the temperature of cooling oil in the motor housing, calculating the winding temperature based on the oil temperature detected by the oil temperature sensor, and calculating the thermal capacity and thermal resistance, and detects motor temperature based on this winding temperature. When the detected temperature of the motor is a predetermined value or higher, the torque of the motor is controlled. [0003] In a motor cooled by cooling oil in a housing of the motor such as JP-A-2013-85388, during cooling or the like, when the temperature of the cooling oil is low, the viscosity of the cooling oil becomes high. Therefore, there is a probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/19
CPCH02K9/19B60L15/20B60L50/61H02P29/40H02P29/62H02P29/66Y02T10/62Y02T10/64Y02T10/70Y02T10/72H02P6/12H02P29/60Y02T10/7072
Inventor 猪熊贤二佐藤卓八木丰儿真贝知志
Owner DENSO CORP
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