Serial-parallel conversion device of three-phase motor winding and three-phase motor device

Abstract

A serial-parallel conversion device of a three-phase motor winding comprises a connector and a jointer used for paring and being jointed with the connector. The connector is provided with a plurality of binding posts which are respectively electrically connected with each endpoint of a coil of the three-phase motor winding. The jointer is provided with a plurality of connection terminals which are pairing and jointed with the plurality of binding posts. Bonding conductors for electrically connecting two of the plurality of connection terminals are arranged between the plurality of connection terminals. The jointer and the connector are jointed with each other according to a corresponding identifier such that same-phase winding coil of the three-phase motor can be connected in series or in parallel. According to the invention, a motor can operate easily at high and low voltages; the motor has a simple wiring structure; and the problem of cost increase caused by motor-winding specification increase required by motor operation at different voltages or the motor burnout problem caused by wiring errors easily happened due to complex wiring of a single motor can be solved.

Description

technical field [0001] The invention belongs to the field of motor equipment, and in particular relates to a series-parallel conversion device for three-phase motor windings and three-phase motor equipment. Background technique [0002] To realize the operation of traditional three-phase motors under different voltages, one method is to use two motors with different windings, one motor is used for high voltage, and the other motor is used for low voltage; the other method is to use A motor, the internal winding of the motor leads to taps for each group of windings, and the user can connect to high and low voltages to operate by manual wiring according to the circuit diagram. [0003] However, the operation of the motor under different voltages requires an increase in the winding specifications of the motor, which will lead to an increase in cost; with one motor, the user must wire according to the circuit diagram to achieve operation under two voltages, which will cause comp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a series-parallel conversion device for three-phase motor windings in which the motor can be connected to high and low voltages to operate by inserting the cover plate assembly as required, aiming at solving the need to increase the winding of the motor when the motor operates under different voltages Specifications, or the use of a single wiring is complex and easy to make wiring errors that cause the motor to burn out

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