Drive device

A driving device and driving force technology, applied in transmission control, electromechanical device, control drive, etc., can solve problems such as inability to ensure accuracy, easy deterioration of rotating motor control accuracy, and high temperature
CN105324932AActive Publication Date: 2016-02-10AISIN AW CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
AISIN AW CO LTD
Publication Date
2016-02-10

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Abstract

The present invention pertains to a drive device (1) that, in order to minimize effects on control precision of a rotary electric machine and to reduce product cost, comprises an AC rotary electric machine (PM) and an inverter (40). The drive device (1) comprises a shunt resistance that detects current that flows to a switching element unit for each phase of the inverter (40). The AC rotary electric machine (PM) is drive-coupled to a rotating body provided independently from a wheel (W) and the shunt resistance is arranged in a drive force source chamber (Q) housing a drive force source (E).
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Description

technical field

[0001] The present invention relates to a drive device including a rotating electrical machine and an inverter connected between the rotating electrical machine and a DC power supply. Background technique

[0002] As the drive device described above, a device described in JP 2007-166803 A (Patent Document 1) is known. In such an apparatus, in order to perform drive control of the rotating electric machines [motor generators MG1, MG2], it is necessary to install a current sensor for detecting the current flowing through the stator coils of each phase. Conventionally, as a current sensor used in a driving device, a sensor of a Hall element as disclosed in Patent Document 1 has been widely used. Sensors using Hall elements have relatively stable temperature characteristics and can detect current with high precision, so they are frequently used in driving devices that are prone to high-temperature environments for high-precision drive control of rotating electri...

Claims

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