Motor capacitor and single-phase motor

Abstract

The invention provides a motor capacitor and a single-phase motor. The technical problems that an existing YL single-phase motor is large in overall size, poor in running capacitor and starting capacitor performance, prone to damage and single in function are solved. The capacitor comprises at least two groups of conductive polar plates, wherein the capacity of the capacitor is changed by controlling the relative area between the two groups of conductive polar plates or controlling a series-parallel structure between the two groups of conductive polar plates, so that unification of a startingcapacitor and an operation capacitor is achieved, and the capacitor size is effectively reduced. The relative area of the conductive polar plates in each group of conductive polar plates or the controlled change of the series-parallel structure can be quickly switched between the parameter and capacity requirements of the starting capacitor and the operating capacitor, the starting efficiency canbe ensured when the starting capacitor is used, and the operating efficiency can be ensured when the operating capacitor is used. The assembly size of the corresponding motor is effectively reduced. Meanwhile, the control mode is simple and convenient, the circuit structure is reliable, and faults can be rapidly and visually checked and eliminated even if the faults occur.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor capacitor and a single-phase motor. Background technique [0002] In the prior art, the single-phase asynchronous motor has the characteristics of simple structure, high speed, simple control and high reliability. Among them, YL series single-phase double-value capacitor asynchronous motors (referred to as YL single-phase motors) are mostly used in small mechanical equipment such as air compressors, pumps, electric fans, and refrigerators. The basic circuit structure of YL single-phase motor is as follows: figure 1 shown. exist figure 1 Among them, it includes the running winding, starting winding, running capacitor and starting capacitor. The running capacitor and starting capacitor form a parallel branch. The starting winding and the running winding have a common end. The independent ends of the starting winding and the running winding are connected to the para...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the embodiment of the present invention provides a motor capacitor and a single-phase motor to solve the technical problems of the existing YL single-phase motor with large overall volume, poor performance of running capacitor and starting capacitor, easy damage, and single function

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