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Magnetic field control device and method for alternating current permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and control device, which is applied in the direction of electronically commutated motor control, single motor speed/torque control, control system, etc. It can solve the problems of poor control effect of motor magnetic field and achieve better control effect Precise control and promotional effects

Inactive Publication Date: 2015-06-24
泰州力盛达机电科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the prior art has poor control effect on the magnetic field of the motor

Method used

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  • Magnetic field control device and method for alternating current permanent magnet synchronous motor

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Embodiment Construction

[0013] The specific embodiments of the present invention will be described with reference to the accompanying drawings. A magnetic field control device for an AC permanent magnet synchronous motor 8 in this embodiment includes a three-phase electric bridge 7, a permanent magnet synchronous motor 8, an encoder 9, and a modulator 6. , The first conversion module 5, the second conversion module 12, the third conversion module 11, the first PI controller 2, the second PI controller 4, the first summer 1, the second summer 3, and the third summer The totalizer 14, the encoder 9 is installed at the output end of the permanent magnet synchronous motor 8. The output end of the first summer 1 is connected to the second summer 3 through the first PI controller 2, and the second summer 3 The connection is established with the first conversion module 5 through the second PI controller 4, and the output terminal of the third summer 14 is connected with the first conversion module 5 through t...

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Abstract

The invention relates to a magnetic field control device and method, in particular to the magnetic field control device and method for an alternating current synchronous motor. The magnetic field control device and method aim at solving the problem that the magnetic field control effect of a motor is poor in the prior art. The magnetic field control device comprises a three-phase bridge, the permanent magnet synchronous motor, an encoder, a modulator, a first conversion module, a second conversion module, a third conversion module, a first PI controller, a second PI controller, a first summator, a second summator and a third summator. The encoder is installed at the output end of the permanent magnet synchronous motor, the output end of the first summator is connected with the second summator through the first PI controller, the second summator is connected with the first conversion module through the second PI controller, and the output end of the third summator is connected with the first conversion module through the third PI controller. The magnetic field of the permanent magnet synchronous motor is more accurately controlled, the control effect is better, and popularization is facilitated.

Description

Technical field [0001] The invention relates to a magnetic field control device and a control method thereof, in particular to a magnetic field control device and a control method for an AC synchronous motor, and belongs to the technical field of motor control. Background technique [0002] Due to the advent of rare earth neodymium iron boron permanent magnet materials, permanent magnet motors have become a representative of high power density and high efficiency motors. The permanent magnet motor has a simple structure, flexible control, and a variety of rotor forms that are easy to achieve optimal control. Because of its above-mentioned advantages, permanent magnet synchronous motors have been widely used in various fields such as industrial control, vehicle engineering, and building automation. Summary of the invention [0003] The purpose of the present invention is to solve the problem of poor effect of the prior art on the magnetic field control of the motor. [0004] The te...

Claims

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Application Information

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IPC IPC(8): H02P6/08
CPCH02P6/085
Inventor 李志鹏郭艳玲许李尚宋海兵刘宏
Owner 泰州力盛达机电科技有限公司
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