Three-stage brushless synchronous start generator structure and start control method thereof

A technology of synchronous starting and generator, applied in the direction of motor generator control, electronic commutation motor control, control generator, etc., can solve the complex structure and control method of the stator winding of the main exciter, without using the field weakening constant power area, Insufficient excitation current of the main motor and other problems, to achieve the effect of increasing the speed range, reducing cost and complexity, and reducing motor capacity

Active Publication Date: 2016-05-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of insufficient excitation current of the main motor at standstill and low speed in the traditional three-stage brushless synchronous starter generator, the stator winding structure and control method of the main exciter are complex and costly
The start of the traditional three-stage brushless synchronous starter generator only uses the constant torque area of ​​the main motor, but does not use the field-weakening constant power area, so the motor capacity is wasted when designing the main motor

Method used

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  • Three-stage brushless synchronous start generator structure and start control method thereof
  • Three-stage brushless synchronous start generator structure and start control method thereof
  • Three-stage brushless synchronous start generator structure and start control method thereof

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0029] Such as figure 1 As shown, the present invention discloses a structure of a three-stage brushless synchronous starter generator, including a permanent magnet auxiliary exciter, a main exciter, a main motor, a rotating rectifier and a three-phase full-bridge inverter; the main excitation The machine, the main motor, and the rotating rectifier are connected in sequence, and the three-phase full-bridge inverter is connected to the main motor;

[0030] The permanent magnet auxiliary exciter is a permanent magnet synchronous motor, its rotor is a permanent magnet, and its stator winding is a three-phase symmetrical winding, respectively the tenth winding A 3 , the eleventh winding B 3 , the twelfth winding C 3 ;

[0031] Among them, the stator winding of the main exciter is a three-phase symmetrical winding, including the first winding A 2 ,...

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Abstract

The invention discloses a three-stage brushless synchronous start generator structure and a start control method thereof. The three-stage brushless synchronous start generator structure comprises an auxiliary permanent magnet exciter, a main exciter, a main motor, a rotary rectifier and a three-phase full-bridge inverter; the main exciter, the main motor and the rotary rectifier are sequentially connected; and the three-phase full-bridge inverter is connected with the main motor. The structural complexity of the three-stage brushless synchronous start generator can be reduced; the working reliability can be improved; the start control method can be simplified; the rotation speed range of the main motor can be expanded; the design capacity of the main motor can be reduced; and start of the generator can be completed effectively and stably.

Description

technical field [0001] The invention relates to the technical field of motors and electric drives, in particular to a three-stage brushless synchronous starter-generator structure and a starting control method thereof, belonging to the field of motor control. Background technique [0002] The three-stage brushless synchronous starter generator has been more and more widely used in aircraft because of its advantages of stability and high efficiency. In order to solve the problem of insufficient excitation current of the main motor at static and low speeds in the traditional three-stage brushless synchronous starter generator, the stator winding structure and control method of the main exciter are complex and costly. The start of the traditional three-stage brushless synchronous starter generator only uses the constant torque area of ​​the main motor, but does not use the field-weakening constant power area, so the motor capacity is wasted when designing the main motor. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02P21/34
CPCH02K29/00
Inventor 赵星晨王晓琳王莉李荣冰陈辉曹炀陈清
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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