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Double-winding free piston linear generator and control method

A technology of linear generators and linear motors, applied in the direction of controlling mechanical energy, engine components, machines/engines, etc., can solve the problems of FPLG advantages that cannot be brought into play, long response time, shutdown conditions, etc., to solve the problem of excessive response time of motor mode conversion Long, solve the insufficient power of the piston, the effect of simple structure

Active Publication Date: 2021-02-05
ZIBO SUPER MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At this time, FPLG must re-convert the generator to the motor to drive the mover to the designated position, but because the conversion of the motor working mode takes time, and after the conversion is successful, the motor will also take a certain amount of time to reload, and there may be a shutdown However, the stable operation of FPLG cannot be guaranteed, and the advantages of FPLG cannot be brought into play.
[0007] The prior art discloses that by setting the auxiliary motor to work in conjunction with the generator, the state of the generator no longer needs to be converted into a mode, which solves the problem of long response time for the generator to switch to the motor mode; however, due to the addition of the auxiliary motor, the FPLG The system structure is more complex than the single-motor FPLG system structure, the mass of the mover increases, the system frequency decreases, and the system output power is affected

Method used

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  • Double-winding free piston linear generator and control method

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Embodiment 1

[0034] This embodiment takes the current rear-mounted FPLG as an example for illustration. Of course, this does not constitute a limitation on the protection scope of this patent, and this patented technology is also applicable to other types of FPLG.

[0035] The back-mounted FPLG is equipped with an engine at both ends of the generator core shaft. Generally, a two-stroke engine is used symmetrically, and a linear motor is arranged in the middle. The motor has two functions of a motor and a generator, which can realize the conversion of different working modes.

[0036] Due to the change of the combustion cycle of the engine, the mutual conversion between the electric mode of the linear motor and the power generation mode, and the response time after the conversion, it is very difficult for the current FPLG to operate stably.

[0037] Based on this, according to an embodiment of the present invention, an embodiment of a double-winding free-piston linear generator is proposed, ...

Embodiment 2

[0074] According to an embodiment of the present invention, an embodiment of a control method of a double-winding free-piston linear generator is provided, including: a start-up process and a normal operation process;

[0075] During the start-up process, the first winding is energized and the mover is driven to move to the left. During this process, the mover is affected by the drag force and the pressure of the compressed gas of the left cylinder, and the mover experiences a process of acceleration first and then deceleration to zero. When the drag force is small, the mover cannot reach the designated top dead center position during the first dragging process, and the frequency of the mover is also low at this time. Through the sensing element and the gear contact device, the mover can be detected. The real-time position of the mover, when the speed of the mover reaches zero, it indicates that the first dragging process is over, the first winding is powered off, and the secon...

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Abstract

The invention discloses a double-winding free piston linear generator and a control method. The double-winding free piston linear generator comprises a power part and a linear motor, and a first winding and a second winding are reversely and symmetrically arranged in a stator slot of the linear motor to form a double-winding linear motor. The double windings are arranged on a linear motor stator,so that the mass of a system rotor is not increased, and therefore the working frequency of the system is not reduced; and meanwhile, the problem of dragging force direction change when a single-winding free piston linear generator is started can be solved, and the problem of time conversion of a motor from a power generation mode to an electric working mode in case of fire is solved.

Description

technical field [0001] The invention relates to the technical field of a double-winding free-piston linear generator, in particular to a double-winding free-piston linear generator and a control method. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The free-piston linear generator is composed of a traditional internal combustion engine and a linear motor. The common free-piston linear generator (hereinafter referred to as: FPLG) structure is mainly divided into single-piston type, opposed double-piston type (referred to as opposed type) and back-mounted double-piston type. (referred to as the back type) three kinds. FPLG can convert the heat energy generated by the internal combustion engine into electric energy output, and has the advantages of low friction loss and high thermal efficiency. It can be used as a range extender unit for h...

Claims

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Application Information

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IPC IPC(8): F02B63/04F02B77/08H02K7/18
CPCF02B63/041F02B77/08H02K7/1884
Inventor 程勇唐娟马宗正吕宏马翠英
Owner ZIBO SUPER MOTOR
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