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Motor driving device and method

A driving device and motor technology, applied in the direction of AC motor control, single motor speed/torque control, electrical components, etc.

Inactive Publication Date: 2012-10-10
MT CARS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010]However, the technology described in JP 2003-174790 A is a failure countermeasure, not a content for upsizing

Method used

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  • Motor driving device and method
  • Motor driving device and method
  • Motor driving device and method

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Experimental program
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Embodiment Construction

[0022] For example, most of the stator coils of motors use ordinary 2 poles, 4 poles, 6 poles, 8 poles, 12 poles, 16 poles, etc. For electric motors used in large electric vehicles, multi-pole motors ranging from about 8 to 16 poles can be used in terms of their rotational speed and torque.

[0023] A first embodiment in which the present invention is applied to a 3-phase 8-pole AC motor will be described below with reference to the drawings.

[0024] figure 1 Indicates a schematic circuit structure (a horizontally expanded circumferential structure), including 3 phases × 8 / 2 poles = 12 sets of coils, which are DC non-conductive coils that reduce the number of coils that use a set of coils of U, V, and W3 phases to generate 2 poles. Brushless type winding.

[0025] Here, in the case of concentrated winding in the simplest form, there are 3 in total since U, V, and W are 3 phases and 1 for each phase, so all stators can be realized with at least 12 coils. In addition, in or...

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Abstract

The phase coils of the rotor on the circumferential direction of the rotor are divided into n (>=2) coil groups. The power lines of each coil group are separated to form multi-pole electric motor, and n transducers are respectively connected with the power lines of the coil group corresponding with the electric motor. A control device synchronously operates the n transducers so as to drive the electric motor. Therefore, the system with low cost safety drives the multi-pole electric motors used in the large electric automobile and the hybrid car.

Description

technical field [0001] The present invention relates to a drive device and a drive method for an electric motor used as an engine of an electric vehicle, a hybrid vehicle, or the like. Background technique [0002] When converting a vehicle with a relatively large gross vehicle weight, such as a large truck, into an electric vehicle or converting it into a hybrid vehicle, it is necessary to control a large electric motor commensurate with the gross vehicle weight. [0003] Originally, for a large electric motor, it is required to supply necessary electric power by a large inverter (inverter) commensurate with the power of the electric motor. [0004] However, the production of high-power inverters requires special semiconductor elements such as large-scale IGBTs, and the price increases due to the small number of manufactures. Due to the difficulty in obtaining them, it takes too much time to supply them. [0005] Suppose, as a large motor required for a large vehicle, for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08H02P27/04H02P6/06H02P6/12
Inventor 林田素行
Owner MT CARS