Magnetization state selection method and online control method for optimal control of full-speed efficiency of adjustable-flux permanent magnet synchronous motor

Abstract

A magnetization state selection method and an on-line control method for optimum control of full-speed domain efficiency of an adjustable-flux permanent magnet synchronous motor belong to the field of electric motors. . The method of the present invention is as follows: Step 1: According to the full-speed domain efficiency optimal control current trajectory search method, respectively obtain m current operating points with the smallest motor operating current amplitude under different magnetization states, and obtain m motor efficiency MAP maps; Step 2, Determine the operating range of the motor; step 3, determine the optimal magnetization state of each working point of the motor within the operating range based on the principle of optimal efficiency; step 4, make the optimal magnetization state of the adjustable magnetic flux motor at full speed domain efficiency control Query diagram; Step 5: When the adjustable magnetic flux motor is running, determine the optimal magnetization state of each operating point in the full-speed domain according to the optimal magnetization state query diagram, so as to realize the optimal control of the full-speed domain efficiency of the adjustable magnetic flux motor.

Description

technical field [0001] The invention relates to a magnetization state selection method and a current trajectory search algorithm in the full-speed domain efficiency optimal control of an adjustable-flux permanent-magnet synchronous motor, a nonlinear flux linkage model of an adjustable-flux permanent-magnet synchronous motor and a method based on The invention discloses an optimal online control algorithm for the full-speed domain efficiency of an adjustable magnetic flux permanent magnet synchronous motor of a neural network, which belongs to the field of motors. Background technique [0002] In recent years, the number of traditional automobiles has surged, and the problem of environmental pollution has become increasingly serious, which has gradually become one of the important factors aggravating global warming and the greenhouse effect. At the same time, traditional automobiles use internal combustion engines, which have a low energy conversion rate and are very depende...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the traditional optimal control algorithm in the full-speed domain efficiency uses fixed parameter values ​​to calculate, and there is a large deviation in the current trajectory, which makes it impossible to accurately select the magnetization state with the best motor efficiency, and cannot realize the accurate full-speed domain of the adjustable flux motor. For the problem of optimal efficiency control, a method for selecting the magnetization state of the adjustable flux permanent magnet synchronous motor with the optimal control of the full speed domain efficiency is provided to realize the selection of the magnetization state of the adjustable flux permanent magnet synchronous motor under the optimal control of the full speed domain efficiency Fast and accurate specification of selection and current trajectories

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