High-frequency output AC-AC phase shift frequency conversion circuit, motor, and motor control system

A frequency conversion circuit and high-frequency technology, applied in the field of AC-AC frequency conversion, can solve the problems of small output frequency range and limit the application range of AC-AC frequency speed regulation at high speeds, etc., and achieve increased variation range, convenient and reliable control, and practicality strong effect

Active Publication Date: 2017-08-04
四川大学锦城学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This innovation allows for regulation of an electrical machine's speed by changing its input voltage or pulse width (PWM) signal based on certain factors like temperature. By doing this it makes machines operate more efficiently while maintaining their performance even when they are used under different environmental temperatures.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance and versatility of AC-DC frequency converters used in industrial drive systems such as induction motors due to their limited input frequency ranges. Current methods have limitations including slow response times and insufficient torque capabilities.

Method used

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  • High-frequency output AC-AC phase shift frequency conversion circuit, motor, and motor control system
  • High-frequency output AC-AC phase shift frequency conversion circuit, motor, and motor control system
  • High-frequency output AC-AC phase shift frequency conversion circuit, motor, and motor control system

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Embodiment Construction

[0044] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] From figure 2 It can be seen that a high-frequency output alternating-alternating phase frequency conversion circuit, motor and circuit control system includes three sets of control switch groups connected between the input end of the three-phase power supply and the output end of the frequency conversion; the three-phase power supply The input terminal is connected to a three-phase power supply, and the frequency conversion output terminal includes three frequency conversion output connection terminals, and the three frequency conversion output connection terminals are respectively connected to the three power supply connection terminals of the stator winding of the motor; the input of each group of control switch groups One phase power supply of the three-phase unit is terminated; three contro

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PUM

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Abstract

The invention discloses a high-frequency output AC-AC phase shift frequency conversion circuit, a motor, and a motor control system. The circuit comprises three groups of control switch groups which are connected between a three-phase power input end and a frequency conversion output end. The three-phase power input end is connected with a three-phase power supply, and three frequency conversion output connection ends of the frequency conversion output end are respectively connected with three power connection ends. The input end of each control switch group is connected with a power supply of one phase of the three-phase unit. Each control switch group is provided with three control switches in a parallel manner, wherein the three control switches are sequentially connected. Each frequency conversion output connection end is connected with the output end of one control switch of each control switch group. When each control switch group is connected, the phase shift of the three-phase power outputted by the frequency conversion output end is carried out clockwise or anticlockwise. The beneficial effects of the invention are that the circuit achieves the AC-AC frequency conversion operation (greater than 50Hz), and enlarges the AC-AC frequency conversion speed regulation range; the circuit is convenient to control, is reliable in operation, and also can achieve the operation (greater than 50Hz) in a circulating current system.

Description

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Claims

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Application Information

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Owner 四川大学锦城学院
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