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Composite motor operation control method and control system

A composite motor, operation control technology, applied in the control system, motor control, vector control system and other directions, can solve the problem of low reliability of composite motor operation

Inactive Publication Date: 2020-04-17
BINZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composite motor is a combination of the inner motor and the magnetic gear, and only establishing the dynamic model of the magnetic gear is not enough to realize the dynamic analysis and control of the composite motor, and the operation reliability of the composite motor is still low

Method used

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  • Composite motor operation control method and control system
  • Composite motor operation control method and control system
  • Composite motor operation control method and control system

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Embodiment Construction

[0042] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0043] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0044] Such as image 3 As shown, the compound motor operation control method according to the embodiment of the present invention includes:

[0045] S302, obtain the d-axis current i of the inner ...

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Abstract

The invention provides a composite motor operation control method and control system. The method comprises the steps: obtaining d-axis current id, q-axis current iq and rotor mechanical angular speedomega M of an inner motor under a rotor synchronous rotation two-phase coordinate system; calculating the equivalent torsional spring stiffness KC of a magnetic gear according to a proposed internal motor-magnetic gear double-torsion-spring dynamic model; and according to the equivalent torsional spring rigidity KC of the magnetic gear and a preset minimum limit value delta K, calculating the currently allowed maximum internal motor equivalent torsional spring rigidity, and according to the allowed maximum internal motor equivalent torsional spring rigidity, correcting the given value of q-axis current under the rotor synchronous rotation two-phase coordinate system so as to control the stable operation of a composite motor. According to the technical scheme of the invention, the inner motor-magnetic gear double-torsion-spring dynamic model is constructed, the magnetic gear and the inner motor are used as a whole for dynamic modeling, the problem of dynamic analysis in the operation process of the composite motor is theoretically solved, motor rotating speed and current double-closed-loop control and an operation reliability improvement algorithm are organically combined together,and practical application is more convenient.

Description

technical field [0001] The invention relates to the technical field of compound motor control, in particular to a compound motor operation control method and control system. Background technique [0002] The magnetic variable speed permanent magnet synchronous motor (composite motor) integrates the concentric magnetic field modulation magnetic gear and the permanent magnet synchronous motor, and uses the magnetic gear to realize the speed conversion and torque transmission between the inner and outer rotors. The structural diagrams of the concentric magnetic field modulation magnetic gear and the composite motor composed of it are as follows: figure 1 (a), (b) shown. The composite motor has the advantages of compact structure, high torque density, and high transmission efficiency, and has broad development prospects in the fields of low speed, high torque, and direct drive. [0003] However, the low rigidity of the magnetic gear in the composite motor determines that the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/13H02P29/00
CPCH02P21/0003H02P21/13H02P29/0016
Inventor 孙佃升
Owner BINZHOU UNIV
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