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A double-winding free-piston linear generator and its control method

A technology of linear generators and control methods, which is applied to engine components, control mechanical energy, machines/engines, etc., can solve the problems of FPLG advantages that cannot be brought into play, long response time, and increased mass of movers, etc., to solve the problem of motor mode conversion Time response is too long, solve the effect of insufficient piston power, and solve the effect of long time response

Active Publication Date: 2022-01-07
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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  • A double-winding free-piston linear generator and its control method
  • A double-winding free-piston linear generator and its control method
  • A double-winding free-piston linear generator and its 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 thereof, comprising: a power component and a linear motor, and in the stator slot of the linear motor, a first winding and a second winding are arranged oppositely and symmetrically to form a double winding Linear Motor. The present invention arranges double windings on the stator of the linear motor, which will not increase the quality of the moving parts of the system, and therefore will not reduce the operating frequency of the system; at the same time, it can solve the problem of changing the direction of the drag force when the single-winding free-piston linear generator is started, and solve the problem of fire failure. The problem of the conversion time of the motor from power generation to electric work mode.

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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Patent Type & Authority Patents(China)
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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