Open-loop soft start control method for switched reluctance motor

A technology of switched reluctance motors and reluctance motors, applied in the direction of electronically commutated motor control, control systems, electrical components, etc., can solve the problems of poor control accuracy, large starting torque, and inability to obtain jog effects, etc., and achieve fast response Speed ​​and stability, good control of the effect of smoothness

Inactive Publication Date: 2015-04-29
SOUTHEAST UNIV
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Problems solved by technology

Among the above methods, the first method has the problem of too much starting torque, and cannot obtain jog effect; the second method has the problem of poor control accuracy, and cannot obtain smooth control effect; the third method requires a lot of closed-loop adjustment processes, Convergence and stability are still to be seen, unable to quickly respond to the operator's given

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  • Open-loop soft start control method for switched reluctance motor
  • Open-loop soft start control method for switched reluctance motor
  • Open-loop soft start control method for switched reluctance motor

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Embodiment Construction

[0023] The specific method and operation process provided by the present invention will be described in detail below in conjunction with the accompanying drawings and examples (taking one phase winding of a reluctance motor as an example).

[0024] The invention discloses an open-loop soft-start control method for a switched reluctance motor, which can realize the gradual change controllable output of the switched reluctance motor from zero torque to the maximum torque, thereby realizing the effect of soft start of an electric vehicle, and is especially suitable for a certain In some occasions that require fine control, such as the adjustment of the jog position of the electric loading and unloading vehicle, etc., it can avoid the problem that the jog cannot be realized due to the excessive start-up impact of the traditional open-loop control method, thereby solving the problem of switching reluctance motors in electric loading and unloading vehicles. application problems.

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Abstract

The invention discloses an open-loop soft start control method for a switched reluctance motor. By a method of combining a current chopping circuit mode (CCC) and a voltage control mode (VC), a level set signal transmitted by a rotating handle or a pedal operated by an external operator is used as an open-loop input value; after being sampled by an analog-digital conversion (ADC) module arranged in a micro processor (CPU), the open-loop input value is converted to an open-loop control proportion coefficient; meanwhile, a chopping limit in the CCC mode and a pulse width modulation signal (PWM) in the VC mode are equally proportionally adjusted so as to output an upper switch power tube current chopping signal which is changed along with an input condition; therefore, the phase current peak value and phase voltage of the switched reluctance motor are synchronously controlled, and gradually changed controllable outputting of the motor from zero moment to the maximum moment is realized; an effect of soft start is achieved.

Description

technical field [0001] The invention relates to a starting method of a switched reluctance motor, in particular to an open-loop soft start control method of a switched reluctance motor. The effect of soft start is especially suitable for some occasions that require fine control, such as the adjustment of the jog position of electric loading and unloading vehicles, etc., to avoid the problem that the jog cannot be realized due to the excessive impact of vehicle startup caused by the traditional open-loop control method, which belongs to motor control technology field. Background technique [0002] Switched reluctance motor is a new type of speed control drive system developed with the rapid development of power electronics, microcomputer and control technology in the early 1980s. It has the outstanding characteristics of simple structure, reliable operation and high efficiency, and has become an AC motor speed control system. , DC motor speed control system and a strong comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/20
CPCH02P2006/045
Inventor 钟锐郭小强刘培银刁龙孙伟锋陆生礼时龙兴
Owner SOUTHEAST UNIV
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