Construction method of four-degree-of-freedom magnetic bearing controller for flywheel battery used in electric vehicles

Abstract

The invention discloses a construction method of a four-degree-of-freedom magnetic bearing controller for a flywheel battery used in an electric vehicle. A controller parameter optimization module is used to obtain an optimal controller gain matrix through a gray wolf optimization algorithm, and a load compensation controller and a state feedback controller are constructed. , combine the output current of the load compensation controller and the state feedback controller to form the first part of the input of the current limiting controller, and use the discretized current value at the current moment and the previous moment as the second part of the input of the current limiting controller , the state feedback controller, load compensation controller, controller parameter optimization module, and current limiting controller together constitute a four-degree-of-freedom magnetic bearing controller for the flywheel battery, which replaces four single-dimensional controllers and improves the working stability of the magnetic bearing. Improving the dynamic performance and anti-interference performance of the system can effectively increase the maximum current supplied to the magnetic bearing and shorten the adjustment time.

Description

technical field [0001] The invention belongs to the technical field of special electric drive control equipment, and is a construction method of a four-degree-of-freedom magnetic bearing anti-interference controller for a flywheel battery based on state feedback control, which is suitable for a four-degree-of-freedom magnetic shaft machine in the field of electric vehicle flywheel batteries Intelligent anti-jamming control. Background technique [0002] At present, the chemical battery is the most widely used energy storage battery, which converts electrical energy into chemical energy and then converts it into electrical energy output; its advantages are low price and mature technology, but relatively serious pollution, low efficiency, and long charging time. The time is short, and more importantly, the power cannot be controlled according to actual application requirements. Superconducting battery is another battery with many applications. It stores electric energy in a m...

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Problems solved by technology

[0007] The purpose of the present invention is to address the defects of the existing control methods of the magnetic bearing system for flywheel batteries, and provide a four-freedom for flywheel batteries that can effectively suppress the gyro effect of the magnetic bearing system and improve the dynamic characteristics of the magnetic bearing system, especially the robust performance of anti-interference. Construction method of anti-jamming intelligent controller for magnetic bearing

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