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Composite excitation permanent magnet synchronous variable-speed motor

A technology of synchronous motor and compound excitation, applied in the direction of synchronous motor with stationary armature and rotating magnet, single motor speed/torque control, etc., can solve the unsatisfactory effect and difficulty in satisfying the motor torque-speed characteristic Requirements and other issues to achieve good control performance and reliability improvement

Inactive Publication Date: 2006-07-19
HUNAN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

To sum up, the practical application effect of the above-mentioned control method in the prior art is not satisfactory, and it is difficult to meet the requirements of the electric drive system for the torque-speed characteristic of the motor

Method used

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  • Composite excitation permanent magnet synchronous variable-speed motor
  • Composite excitation permanent magnet synchronous variable-speed motor
  • Composite excitation permanent magnet synchronous variable-speed motor

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 and figure 2 As shown, the composite excitation permanent magnet synchronous speed-regulating motor of the present invention includes a composite excitation rare earth permanent magnet synchronous motor and a speed control system. The composite excitation rare earth permanent magnet synchronous motor includes a rotating shaft 1, an end cover 2, and a casing 11. Armature winding 8, the shaft 1 is equipped with a permanent magnet rotor for main excitation and an auxiliary electric excitation rotor for voltage regulation, the rare earth permanent magnet rotor and auxiliary electric excitation rotor share the armature winding 8, and the magnetic potential generated is connected in parallel in the magnetic circuit Synthesis, the bottoms of both sides of the rotor core 10 of the rare earth permanent magnet 9 are pr...

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Abstract

The invention relates to a compound exciting permanent magnetic synchronous speed-regulation electric motor, which comprises a compound exciting rare-earth permanent magnetic synchronous electric motor and a speed-regulation control system. Wherein, the compound exciting rare-earth permanent magnetic synchronous electric motor comprises a rotational axle, a end cover, a frame, and a electric axial winding, while the rotational axle is mounted a main exciting permanent magnetic rotor and a voltage-regulation auxiliary electric exciting rotor; said rare-earth permanent magnetic rotor and the auxiliary electric exciting rotor share one electric axial winding while the generated magnetic voltage is parallel combined in the magnetic circuit. The invention has high overload ability with wider speed-regulation range when meeting the torque moment demand to realize the motor non-brush excitement. It has better reliability and stability.

Description

technical field [0001] The invention mainly relates to the field of motor frequency conversion speed regulation systems, in particular to a composite excitation permanent magnet synchronous speed regulation motor. Background technique [0002] In the prior art, electric drive systems driven by electric motors (such as electric drive ships, electric locomotives, etc.) have certain requirements on the torque-speed characteristics of electric motors, that is, the electric motors must have a large overload capacity and a wide adjustment range. speed range. When running at low speed, the motor is required to have a strong overload capacity, that is, the output torque is relatively large; while at high speed, the output torque is required to be small. At present, motors are divided into electric excitation motors and permanent magnet motors. The former uses current to generate a magnetic field in the motor windings. Such motors not only need special windings and corresponding dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/12H02P6/08
Inventor 黄守道王辉欧阳红林罗德荣高剑肖慧慧李军浩
Owner HUNAN UNIV
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