Control system of permanent magnet synchronous motor, control method and unmanned aerial vehicle
A permanent magnet synchronous motor and control system technology, applied in the control system, motor control, vector control system, etc., can solve the problem of reducing the dynamic response speed of the control system, reduce parameter calculation and adjustment, and improve the dynamic response speed Effect
Active Publication Date: 2017-03-29
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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Problems solved by technology
[0004] However, in the process of implementing the embodiment of the present invention, the inventors found that in the implementation process of the existing permanent magnet synchronous motor control system, due to too many parameters in the outer loop speed loop and the inner loop current loop, a large number of parameter calculations are required and regulation, thus reducing the dynamic response speed of the control system
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] It should be noted that when an element is referred to as being "electrically connected" to another element, it may be directly on the other element or there may be an intervening element. When an element is considered to be "electrically connected" to another element, it may be connected by contact, eg, by a wire connection, or non-contact, eg, by a non-contact coupling.
[0031] Unless otherwise defined, all technical and scientific terms used herein ...
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The invention discloses a control system of a permanent magnet synchronous motor. The control system includes a coordinate conversion unit, a control unit, a signal processing unit and an inverter; the coordinate conversion unit is used for converting three-phase stator current Ia, Ib and Ic into acutaul stator current Id and Iq under a d-Q synchronous rotation coordinate system; the control unit includes a d-axis current control loop and a q-axis current control loop, wherein the d-axis current control loop is used for calculating and outputting given d-axis voltage Udref, and the q-axis current control loop is used for calculating and outputting given q-axis voltage Uqref; the signal processing unit is used for processing and modulating the given d-axis voltage Udref and the given q-axis voltage Uqref into control signals; and the inverter is used for converting the control signals into three-phase stator current of the permanent magnet synchronous motor and driving the permanent magnet synchronous motor to operate. The control system of the permanent magnet synchronous motor of the invention comprises the double current control loops, and therefore, parameter calculation and adjustment in the control system can be reduced, and therefore, dynamic response speed of the control system of the permanent magnet synchronous motor can be improved.
Description
technical field [0001] The invention relates to the technical field of permanent magnet synchronous motor control, in particular to a control system, a control method and an unmanned aerial vehicle of a permanent magnet synchronous motor. Background technique [0002] Due to the advantages of high power density, small size, no need for excitation, high power factor and high position control accuracy, permanent magnet synchronous motors have been more and more widely used in high-performance control systems. [0003] The existing permanent magnet synchronous motor control system includes an outer ring speed loop and an inner ring current loop, the outer ring speed loop generates a given value of the stator current, and the inner ring current loop obtains the actual control signal, so that the existing The permanent magnet synchronous motor control system constitutes a double closed-loop system. [0004] However, in the process of implementing the embodiment of the present in...
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Login to View More IPC IPC(8): H02P21/00H02P25/022
CPCH02P21/00H02P2205/01H02P2207/05
Inventor 陈毅东谷韬
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD