Integrated energy-saving motor with single-phase input and three-phase output function

Abstract

The invention discloses an integrated energy-saving motor with a single-phase input and three-phase output function, belonging to the technical field of the motor. The integrated energy-saving motor comprises a three-phase asynchronous motor and a frequency converter arranged on the three-phase asynchronous motor, wherein the three-phase asynchronous motor comprises a base, a front end cover and a rear end cover; the front end cover and the rear end cover are arranged at front and rear ends of the base; a stator winding and a rotating shaft are arranged in the base; a rotor is arranged on the rotating shaft in a sleeving manner; a fan mounted on the rotating shaft is arranged on the outer side of the rear end cover; the frequency converter comprises a shell and an upper cover; a radiating fin, a control circuit and a display module are arranged in the shell; the control circuit comprises a PCB and a rectifier bridge, a capacitor set, an IGBT module, a wiring terminal and a control terminal which are arranged on the PCB; a single power input port is formed in the wiring terminal. According to the technical scheme of connecting the frequency converter with the three-phase asynchronous motor, the single-phase input and three-phase output function can be realized. The integrated energy-saving motor has the characteristics of controllable starting time, large starting torque and adjustable output frequency.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an integrated energy-saving motor with single-phase input and three-phase output functions. Background technique [0002] With the rapid development of power electronics technology and new semiconductor devices, AC speed regulation technology has been continuously improved and improved, and gradually improved frequency converters have been widely used in AC motors due to their good output waveforms and excellent performance-price ratio. For example: large motors and medium and small roller table motors used in steel mills for steel rolling, traction motors for railways and urban rail transit, elevator motors, lifting motors for container lifting equipment, motors for water pumps and fans, compressors, and household appliances Motors, etc. have been using AC variable frequency speed regulation motors, and achieved good results. The use of AC variable frequency speed regulating mot...

AI Technical Summary

Problems solved by technology

Due to the poor torque characteristics of single-phase motors and poor short-term overload capacity, it is difficult to start with load after the input voltage of a single-phase motor is lower than 80% of the rated voltage; at the same time, because the starting time of a three-phase motor cannot be controlled, frequent starts It is easy to burn out the motor

In addition, the traditional inverter installed in the control cabinet will occupy a large space, and the inverter is easy to interfere with other components in the control cabinet when it is working, and it is also very troublesome for the wiring of the inverter

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