Power generation system based on cylindrical linear oscillation motor and control method thereof

Abstract

The invention discloses a power generation system based on a cylindrical linear oscillation motor, comprises a free piston Stirling engine, a cylindrical linear oscillation motor, a rectifier bridge circuit, a position sensor, a central controller, a battery pack, wherein the position sensor comprises a mover position detection module based on a linear Hall sensor, and the central controller adopts three closed loops control; The three closed-loop control adopts the voltage loop of parameter self-tuning fuzzy PI control and the current loop of speed loop and decoupling control of position-freedetection algorithm combined with PI regulating space vector. A linear oscillation motor, Position Sensorless Technology, based on voltage, the three closed loop control method of speed and current controller is combined and applied to the power generation system, Ensure power quality, improve the dynamic response speed and robustness of the power generation system, at the same time use sensorless technology to solve the position sensor on the environment and installation accuracy requirements of high problems, reduce the manufacturing cost of the power generation system and installation difficulty.

Description

technical field [0001] The invention relates to the fields of power electronics technology and motor control, in particular to a power generation system based on a cylindrical linear oscillating motor and a control method thereof. Background technique [0002] A Stirling engine is an external combustion (or external heating) closed-cycle piston engine, also known as a heat engine. Various fuel combustion devices, solar energy, atomic energy, heat storage devices, and chemical reaction heat generation devices can all be used as external heating sources. Free-piston Stirling engine is an important branch of Stirling engine. Its motion output is reciprocating linear motion. The system has compact structure, small mass, high efficiency and stable performance. Free-piston Stirling engine equipment has great potential in new power sources, space technology, nuclear energy applications, solar energy applications, heat recovery and other fields. [0003] Cylindrical linear oscilla...

AI Technical Summary

Problems solved by technology

[0007] In order to ensure the power quality of the power generation system, improve the dynamic response speed and robustness of the power generation system, and at the same time solve the problem of high requirements for the environment and installation accuracy of the position sensor, the purpose of the present invention is to provide a power generation system based on a cylindrical linear oscillating motor and The control method uses a free-piston Stirling engine in conjunction with a cylindrical linear oscillating motor, which combines the advantages of a free-piston Stirling engine with compact structure, high efficiency and high cylinder linear oscillating motor, which are cheap in cost, simple in structure, and fast in response. In terms of control, it is combined with the control method without position sensor. According to the motion characteristics of the free piston Stirling engine, the parameter self-tuning fuzzy controller, decoupling control, linear Hall position detection and closed-loop control are combined to provide a A power generation system solution that is cheap to manufacture, easy to install, stable in control, and reliable in electric energy

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