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Bidirectional control circuit and control method based on free piston Stirling linear motor

A linear motor, two-way control technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problem that the motor cannot be perfectly self-starting, and achieve the effect of meeting the precise requirements, not increasing the confined space, and not increasing the volume of the system

Inactive Publication Date: 2017-05-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Problems solved by technology

Due to limitations in various aspects such as technology, the free-piston Stirling power generation system still faces many problems, such as the phenomenon that the motor is suitable for light and small motors with good sealing and long-term on-orbit operation, and the motor cannot be perfectly self-started.

Method used

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  • Bidirectional control circuit and control method based on free piston Stirling linear motor
  • Bidirectional control circuit and control method based on free piston Stirling linear motor

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0030] The control process of the low-power free-piston Stirling linear motor control system is mainly divided into two stages. The first stage is start-up control. At this time, the heat source provides heat energy for the system, and the control system converts the voltage of the battery to power the linear motor. At this time, the linear motor is used as a motor to drive the free-piston Stirling engine to run; the second stage is the power generation state. When the motor runs smoothly, the linear motor is used as a generator, and the free-piston Stirling engine is driven by the linear motor to run. The forest engine drives the linear motor, generates alternating current, and supplies power to the load and battery through voltage conversion.

[0031] Such as figure 1As shown, a bidirectional control circuit based on a Stirling linear motor...

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Abstract

The invention belongs to the technical field of free piston Stirling linear motor power generation systems, and specifically discloses a bidirectional control circuit and a control method based on a free piston type Stirling linear motor. The circuit includes a microprocessor, a rectifier inverter, an energy storage device, a brake circuit, a bidirectional DC-DC converter, a unidirectional linear motor, a free piston Stirling generator system, a discharge circuit, a power supply management circuit, a current sensor and a pressure wave sensor. The method includes an electric state and a power generation state. The control circuit and the control method can not only improve the starting probability of a linear motor single-phase control system, but also reduce the time required for the system to start while reducing phenomena of excessive vibration during the start of the system.

Description

technical field [0001] The invention belongs to the technical field of a free-piston type Stirling linear motor power generation system, and in particular relates to a bidirectional control circuit and a control method based on a free-piston type Stirling linear motor. Background technique [0002] The energy utilization rate of traditional space applications is very low, only 4%. Now the isotope heat source is used to supply heat to the free-piston Stirling linear motor power generation system, and its conversion efficiency can reach 20%, which is higher than that of most thermoelectric conversion systems. [0003] The relevant research on the single-phase control system of the small-power free-piston Stirling linear motor has enabled the self-starting of the system and the stable and high-quality conversion of solar energy, nuclear energy, etc. Lay the groundwork. Due to the limitation of technology and other aspects, the free-piston Stirling power generation system stil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/06
Inventor 黄玉平李春宇郑再平王移川杨斌
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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