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A Calculation Method of Flux Coefficient of Electrically Excited Synchronous Motor

A technology of synchronous motor and calculation method, which is applied in the direction of motor generator control, electronic commutation motor control, control generator, etc., can solve the problem of not being able to calculate the flux linkage coefficient conveniently and effectively.

Active Publication Date: 2021-10-29
维谛新能源有限公司
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Problems solved by technology

Then it is necessary to obtain the magnetization curve and demagnetization curve in advance, especially the flux linkage coefficient, and there is no convenient and effective method for calculating the flux linkage coefficient at present.

Method used

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  • A Calculation Method of Flux Coefficient of Electrically Excited Synchronous Motor
  • A Calculation Method of Flux Coefficient of Electrically Excited Synchronous Motor
  • A Calculation Method of Flux Coefficient of Electrically Excited Synchronous Motor

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] The technical solution adopted by the present invention to solve the technical problem is: to construct a calculation method for the flux linkage coefficient of an electric excitation synchronous motor, including: S1, when calculating the set power based on the motor nameplate parameters and data table parameters of the electric excitation synchronous motor Power angle; S2, calculating the magnetic field component and torque component of the stator current of the electric excitation synchronous motor and transforming the magnetic field component and the torque component into a stator current ...

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Abstract

A calculation method for the flux linkage coefficient of an electric excitation synchronous motor, comprising: calculating the power angle when the power is set based on the motor nameplate parameters and data sheet parameters of the electric excitation synchronous motor; transforming the magnetic field component and the torque component into a stator current D axis component and stator current Q-axis component; calculate the Q-axis armature reaction inductance per unit value and the D-axis armature reaction inductance per unit value based on the data sheet parameters of the electric excitation synchronous motor, and convert the rotor no-load excitation current and rotor full-load excitation current To the stator side to obtain the stator side rotor no-load excitation current and the stator side rotor full load excitation current; based on the stator current D axis component, the stator current Q axis component, the stator side rotor no load excitation current, the stator side rotor full load excitation current, the D axis The per unit value of the armature reaction inductance and the per unit value of the Q-axis armature reaction inductance calculate the no-load flux linkage amplitude and the full-load flux linkage amplitude; calculate the flux linkage coefficient based on the no-load flux linkage amplitude and the full-load flux linkage amplitude. The invention can conveniently and effectively calculate the flux linkage coefficient.

Description

technical field [0001] The invention relates to the field of electric excitation synchronous motors, in particular to a method for calculating the flux linkage coefficient of electric excitation synchronous motors. Background technique [0002] With the rapid development of modern industry, the motor has become the main power source of various industrial and mining enterprises, and the performance of its AC speed control system has become more and more perfect, but the existing AC speed control technology is not perfect, and there are still many aspects to be overcome and perfect. Vector control technology, as the main force of AC speed regulation technology, has been applied more and more. [0003] Electric excitation synchronous motors usually adopt air-gap flux-oriented vector control. When using this method, it is necessary to observe the size of the flux linkage in order to perform closed-loop adjustment. A simple and easy-to-use method is to calculate the flux linka...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P25/022
CPCH02P21/141H02P25/022H02P2207/05
Inventor 孙建强
Owner 维谛新能源有限公司
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