Research system for experimenting three-phase alternating-current motor and double three-phase alternating-current motor simultaneously

Abstract

The invention discloses a research system for experimenting a three-phase alternating-current motor and a double three-phase alternating-current motor simultaneously. The research system for experimenting the three-phase alternating-current motor and the double three-phase alternating-current motor simultaneously comprises a first three-phase winding component and the like. A second third-phase winding is provided with three second head ends and three second tail ends. The first third-phase winding and the second third-phase winding compose double three-phase windings of the double three-phase alternating-current motor. A first three-phase alternating current contactor, a second three-phase alternating current contactor, a third three-phase alternating current contactor and a fourth three-phase alternating current contactor are all provided with a normally open main contact and a normally closed main contact. Three first tail ends of the first third-phase winding are in series connection with the normally open main contact of the first three-phase alternating current contactor and in series connection with the normally closed main contact of the second three-phase alternating current contactor. The research system for experimenting the three-phase alternating-current motor and the double three-phase alternating-current motor simultaneously is characterized in that the double three-phase alternating-current motor, an ordinary three-phase alternating-current motor and a single three-phase alternating-current motor can be experimented on the same platform through controlling closing and opening of the alternating current contactor without changing lines and only with one time connection.

Description

technical field [0001] The invention relates to an experimental research system, in particular to a research system for simultaneously conducting experiments on three-phase and double-three-phase AC motors. Background technique [0002] The dual three-phase motor system has obvious advantages over the performance of the three-phase motor system: low-voltage standard power devices can be used to achieve high-voltage and high-power processing capabilities; the number of space harmonics that have a greater impact increases, and the amplitude decreases, and the torque ripple decreases ; The magnetomotive force waveform is improved; the motor efficiency is improved; the motor noise is reduced; the multi-phase redundant structure speed control system improves the reliability at the system level. [0003] The existing dual three-phase AC motors generally split the 60° phase belt windings of a normal three-phase AC motor into two 30° phase belt windings, and the two sets of three-ph...

AI Technical Summary

Problems solved by technology

The existing method is generally to reconnect the wiring under different working conditions of the motor. First, it is more troublesome. Second, frequent rewiring will easily cause damage to the lead wires and terminals. Third, if the wrong wiring is accidentally connected, it will easily cause accidents.

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