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Controllable flux permanent magnet synchronous motor driving apparatus for built-in mixed rotor

A permanent magnet synchronous motor and driving device technology, which is applied in the direction of controlling electromechanical transmission devices, controlling generators, controlling electromechanical brakes, etc., and can solve problems such as large stator copper consumption and damage to switching power supplies

Inactive Publication Date: 2009-08-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the field-weakening speed regulation, since the direct-axis current is always applied, the stator current is large, and the stator copper loss is also large; especially once the field-weakening fails, the high-speed rotating permanent magnetic field will induce a very high Electromotive force may cause damage to the inverter power switching device and the switching power supply that provides working power for each control part of the system

Method used

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  • Controllable flux permanent magnet synchronous motor driving apparatus for built-in mixed rotor
  • Controllable flux permanent magnet synchronous motor driving apparatus for built-in mixed rotor
  • Controllable flux permanent magnet synchronous motor driving apparatus for built-in mixed rotor

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, the driving device of the present invention is composed of a controller 1, a built-in hybrid rotor structure controllable flux permanent magnet synchronous motor 2

[0023] (can adopt the motor disclosed in ZL200410093696.3 and 200510013524.5 invention patents) and position sensor 3, and is powered by DC power supply 4. The DC power source can be a battery pack, or can be obtained by rectifying and filtering three-phase or single-phase AC power, or DC power obtained by other various methods. The position sensor is mechanically connected to the motor coaxially, and is connected to the controller through a multi-core cable. The controller provides power for the position sensor and receives the absolute position signal of the permanent magnet magnetic field space of the motor rotor sent back by the position sen...

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PUM

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Abstract

The invention discloses a driving device for controllable flux permanent-magnetic synchronous motors with built-in composite rotors. The driving device comprises a controller and a controllable flux permanent-magnetic synchronous motor with a built-in composite rotor, as well as a position sensor which is connected with an output shaft of the motor and is used for outputting absolute position signals of permanent-magnetic field space of the motor rotor, wherein the position sensor is connected with the controller through a multicore cable. The driving device is specially used for controlling the controllable flux permanent-magnetic synchronous motor with the built-in composite rotor, realizes the wide-range high-performance speed regulation of the controllable flux permanent-magnetic synchronous motor with the built-in composite rotor, and has the advantages of little stator copper loss and safety in use.

Description

technical field [0001] The invention relates to the technical field of electrical transmission, in particular to a drive device for a built-in hybrid rotor controlled flux permanent magnet synchronous motor, which realizes low energy consumption, wide range and high performance speed regulation of the built-in hybrid rotor controlled flux permanent magnet synchronous motor . Background technique [0002] Traditional permanent magnet synchronous motors mostly adopt vector control strategy when adjusting speed in a wide range. In the field-weakening speed regulation area, the purpose of weakening the air-gap synthetic magnetic field is achieved by controlling the demagnetization magnetomotive force generated by the direct-axis current armature reaction. However, since there is a permanent magnet on the direct axis with a magnetic permeability close to that of air, the direct axis magnetic circuit has a large reluctance, resulting in a small direct axis inductance, which limit...

Claims

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Application Information

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IPC IPC(8): H02P27/06H02P21/06H02P25/02
Inventor 陈益广沈勇环王晓远
Owner TIANJIN UNIV
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