Driving plan of parallel multi-section contactless switch speed regulating machine

Abstract

This invention relates to a drive plan for parallel multi-section contactless switch timing motors composed of a motor with tap to each phase winding, a position sensor, a control circuit and a switch driving circuit characterizing in applying more than two sets of independent power driving circuits parallel to related motor windings, each set of power driving circuits works independently in turn in its related speed region , which is especially used in the hub motor driving system of multi-power electromotive cars and double timing driving system of washing machines and motor driving systems of other industrial wide speed motors.

Description

Technical field:

[0001] The invention belongs to the electromechanical field, and in particular relates to an improvement of a driving scheme of an electronic switch speed-regulating motor, especially a driving scheme of a parallel-connected multi-stage non-contact switch speed-regulating motor. Background technique:

[0002] The existing commonly used speed control motor systems include: asynchronous motor frequency conversion speed control system, permanent magnet brushless DC motor, switch bias motor system, etc., collectively referred to as electronic switch speed control motor system. In order to further expand the speed regulation range of the motor under limited voltage and current conditions, a motor speed regulation scheme with multiple taps for each phase of high, medium and low is proposed by modifying the motor windings, commonly known as a multi-power switch speed regulation motor. Taking a two-speed motor with one tap per phase as an example, generally multiple...

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