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Synchronous motor and electric driving system

A synchronous motor, electric technology, applied in synchronous generators, synchronous motors for single-phase current, control electromechanical transmissions, etc.

Inactive Publication Date: 2006-09-20
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, since the battery is not mounted, it is not possible to allow the regenerative operation from the motor and the surplus power generation from the generator that are possible in a hybrid vehicle equipped with a battery. Therefore, it is necessary to perform power generation control so that The generator generates the required power with high precision

Method used

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  • Synchronous motor and electric driving system
  • Synchronous motor and electric driving system
  • Synchronous motor and electric driving system

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Embodiment Construction

[0051] Next, use Figure 1 to Figure 10 , the structure of the electric four-wheel drive vehicle according to the first embodiment of the present invention will be described.

[0052] First, use figure 1 , describe the overall structure of the electric four-wheel drive vehicle that adopts the present embodiment.

[0053] figure 1 It is a system configuration diagram showing the configuration of the electric four-wheel drive vehicle according to the first embodiment of the present invention.

[0054] In the electric four-wheel drive vehicle of this embodiment, the driving force output by the engine (ENG) 10 is transmitted to the front wheels WH-FR, WH-FL through the transmission (T / M) 12, and drives the front wheels WH-FR, WH-FL. WH-FL. In addition, the engine 10 also drives an electric generator (ALT) 14 . The generator 14 is a generator with variable power generation output, and can be varied to a higher voltage than a 14V-based power generator for supplying electric pow...

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Abstract

The invention relates to a synchronous motor with low vibrations and an electric driving system using the motor. A field-coil synchronous motor (100) comprises a stator (103) and a rotor (110) rotatably supported at the inner peripheral side of the stator (103) with a gap left relative to the stator (103). The stator (103) has a stator coil (106) supplied with electric power while being controlled such that driving torque is reduced as a rotation speed of the rotor (110) increases, and the rotor (110) has a field coil (113a, 113b) supplied with a field current while being controlled such that the field current is reduced as the rotation speed of the rotor (110) increases. The rotor (110) is a tandem claw-pole rotor comprising plural pairs of N- and S-claw poles (111a, 112a; 111b, 112b) disposed side by side in an axial direction, and the plural pairs of claw poles (111a, 112a; 111b, 112b) of said tandem claw-pole rotor are relatively shifted from each other in a circumferential direction.

Description

technical field [0001] The present invention relates to a synchronous motor and an electric drive device used in an electric four-wheel drive vehicle that rotates the front wheels with driving force generated by an engine and rotates the rear wheels with driving force generated by an electric motor. Background technique [0002] In recent years, there have been an increasing number of automobiles running using an electric motor as a driving source. They are environmentally friendly vehicles represented by electric vehicles and hybrid vehicles. As its main feature, a battery is installed, and the electric motor is used to generate torque and drive the motor. At this time, in an electric vehicle, the battery is charged by an on-board or external charger; in a hybrid vehicle, an engine is used to drive a generator (or a motor generator is used to generate electricity) to charge the battery. [0003] Furthermore, along with the above eco-friendly vehicles, electric four-wheel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/02H02K19/12H02K21/14B60L11/14B60L50/15B60L50/16H02K19/24H02P6/06H02P6/08H02P6/17H02P6/32H02P21/00H02P21/06H02P21/08H02P27/06H02P27/08
CPCY02T10/643Y02T10/6217Y02T10/725H02K3/28B60L2220/12Y02T10/641B60L2210/20B60L11/1803Y02T10/7005Y02T10/70B60L2260/28B60K6/46B60L15/025B60K6/52Y02T10/623B60L11/14B60K6/44Y02T10/7077B60L11/123H02P2207/05Y02T10/6265B60K6/26H02K16/00H02K19/16B60L2220/14B60L50/61B60L50/16B60L50/51Y02T10/62Y02T10/64Y02T10/72Y02T10/7072
Inventor 梅崎洋介小林孝司吉田健一西馆圭介田原和雄
Owner HITACHI LTD
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