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Electromotor and its control device

A technology of electric motor and electric angle, applied in the field of electric motor, can solve the problems of complex manufacturing process, difficult miniaturization, improve efficiency, etc., and achieve the effect of increasing torque, simplifying motor, and reducing torque ripple

Inactive Publication Date: 2008-05-28
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this structure will cause problems such as difficulty in miniaturization, improvement of efficiency, and cost reduction.
Divide the stator core into teeth, wind the windings one by one, and then couple each tooth; this method has the problem of complicated manufacturing process

Method used

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  • Electromotor and its control device
  • Electromotor and its control device
  • Electromotor and its control device

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0268] The invention solves Figure 128 , Figure 129 structural problems of the motor and figure 1 The problem with the motor shown when producing high torque. In addition, the present invention proposes a configuration relationship between stator poles, rotor poles and ring windings, and a specific structural scheme of stator poles and rotor poles.

[0269] First, in Figure 20 An example of a 6-phase motor according to the present invention showing the arrangement relationship between the stator poles, the rotor poles and the annular windings is shown in . 1 is a rotor shaft, 6 is a motor casing, and 3 is a bearing. In addition, these structures are not necessarily required when explaining the electromagnetic action of the motor, so they are often omitted in the following drawings of the motor of the present invention.

[0270] 51 is an A-phase stator pole, 53 is a B-phase stator pole, 55 is a C-phase stator pole, 57 is a D-phase stator pole, 59 is an E-phase stator p...

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PUM

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Abstract

A motor includes: rotor salient poles and stator salient poles arranged at an identical interval in the circumferential direction of the phase A, phase B, and phase C; a magnetic flux passing magnetic path as a magnetic path for a magnetic flux passing from the rotor salient poles to the stator salient poles of the respective phases to return to the rotor side; and substantially annular windings arranged between the stator salient poles of the respective stator salient poles and the magnetic flux passing magnetic path. The motor outputs torque by applying current of each winding in synchronization with the motor rotation position. A control device of the motor is also disclosed. Since the stator structure, the rotor structure, and the winding structure are simple, it is possible to improve productivity and realize high quality, small size, and low cost.

Description

technical field [0001] The present invention relates to an electric motor mounted in an automobile, a truck, or the like. Background technique [0002] Conventionally, a brushless motor in which coils of each phase are concentratedly wound around stator poles is known (for example, refer to Patent Document 1). Figure 130 It is a longitudinal sectional view showing the schematic structure of such a conventional brushless motor. in addition, Figure 129 is along Figure 130 A cross-sectional view of the AA-AA line. These figures show a 4-pole, 6-slot brushless motor. The winding structure of the stator is so-called concentrated winding, and the coils of each phase are wound concentratedly on each stator pole. in addition, Figure 131 shows the arrangement relationship of U, V, W and other windings in the state where the stator is developed into one turn in the circumferential direction. The horizontal axis represents the electrical angle, and one revolution is 720°. On t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/12H02K1/02H02K1/06H02K1/14H02K1/22H02K1/24H02K1/27H02K19/10H02K21/16H02K21/22H02K21/24H02K21/38H02K29/00
CPCH02K21/145H02K21/24H02K1/06H02K21/227H02K19/103H02K21/125H02K21/38H02K1/02
Inventor 梨木政行
Owner DENSO CORP