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Motor drive apparatus, hybrid drive apparatus and method for controlling motor drive apparatus

一种电机驱动、电机控制单元的技术，应用在电动机的速度或转矩的控制、电动力装置、电动机控制等方向，达到移动距离增加的效果

Active Publication Date: 2011-01-12
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, in Patent Document 1, when the current flowing through the inverter connected to the first motor generator is too large during the retraction operation, the retraction operation by the second motor generator is restricted.

Method used

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  • Motor drive apparatus, hybrid drive apparatus and method for controlling motor drive apparatus
  • Motor drive apparatus, hybrid drive apparatus and method for controlling motor drive apparatus
  • Motor drive apparatus, hybrid drive apparatus and method for controlling motor drive apparatus

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Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals denote the same or corresponding parts.

[0039] figure 1 It is a block diagram showing a schematic configuration of a hybrid vehicle 10 including a hybrid drive device 100 according to an embodiment of the present invention. The hybrid drive device 100 is shown as a representative example of a motor drive circuit including a plurality of motors connected so as to be capable of outputting power to a common output shaft, and a plurality of motor drive circuits respectively connected to the plurality of motors. .

[0040] refer to figure 1 , the hybrid vehicle 10 includes a hybrid drive device 100 , a differential gear 30 , a drive shaft 40 , and drive wheels 50 .

[0041] The hybrid drive device 100 internally includes an engine (internal combustion engine) and two motor generators, and generates output through coo...

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Abstract

If any short-circuit failure occurs in an inverter (14), then a motor generator (MG2) is used to execute a safety driving. If the rotational speed of a motor generator (MG1) calculated from a detection value of a position sensor (22) exceeds a predetermined reference rotational speed during the safety driving, an MGECU (300) turns on all of the switching elements connected in parallel to a switching element in which a short-circuit failure occurs with respect to a power supply line. If the rotational speed is equal to or less than the reference rotational speed, the MGECU (300) turns on only the switching elements connected in series to the switching element in which the short-circuit failure occurs. In this way, any excessive currents can be prevented from occurring in the inverter (14) without restricting the safety driving.

Description

technical field [0001] The present invention relates to a motor drive device, a hybrid drive device, and a control method for a motor drive device, and more particularly relates to a motor drive device, a hybrid drive device, and a hybrid drive device composed of a plurality of motors connected so as to output power to a common output shaft. A driving device and a control method for a motor driving device. Background technique [0002] Recently, hybrid vehicles (Hybrid Vehicles) have been attracting attention as environmentally friendly vehicles. A hybrid vehicle is a vehicle in which a DC power supply, an inverter, and a motor driven by the inverter are used as power sources in addition to a conventional engine. That is, a power source is obtained by driving an engine, a DC voltage from a DC power supply is converted into an AC voltage by an inverter, and the converted AC voltage is used to rotate a motor to obtain a power source. [0003] As one of such hybrid vehicles, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74B60K6/26B60K6/445B60L3/00B60L11/14B60L15/20B60W10/08B60W20/00B60L50/16
CPCY02T10/6239B60L3/0092Y02T10/646B60L3/003B60K6/365B60K6/445B60L2240/421B60W20/00Y02T10/7258B60K1/02Y02T10/648B60L3/08B60W2510/081B60K6/26B60W10/08B60L7/003H02P29/032H02P5/747H02P2101/45Y02T10/62Y02T10/64Y02T10/72B60W2710/08B60W20/40
Inventor 岛名智子
Owner DENSO CORP
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