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Nine-switch inverter for dual permanent magnet synchronous motor and control method thereof

A technology of permanent magnet synchronous motor and nine-switch inverter, which is applied in AC motor control, control system, control of multiple AC motors, etc. The effect of reducing cost and reducing power consumption

Active Publication Date: 2021-04-27
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, the double permanent magnet synchronous motor is controlled and driven by a twelve-switch inverter, which uses many devices, consumes a lot of power, and costs high

Method used

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  • Nine-switch inverter for dual permanent magnet synchronous motor and control method thereof
  • Nine-switch inverter for dual permanent magnet synchronous motor and control method thereof
  • Nine-switch inverter for dual permanent magnet synchronous motor and control method thereof

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Embodiment Construction

[0054] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0055] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the i...

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Abstract

The invention discloses a double permanent magnet synchronous motor nine-switch inverter and a control method thereof, comprising a first inverter bridge arm, a second inverter bridge arm and a third inverter bridge arm, the first inverter One end of the inverter bridge arm, the second inverter bridge arm and the third inverter bridge arm are respectively connected to the three-phase permanent magnet synchronous motor and the three-phase permanent magnet synchronous motor, and the other ends are connected in parallel to the public DC power supply. A selection switch is set in front of the nine-switch inverter of the double permanent magnet synchronous motor to control the different PWM signals generated by the two branches to be input to the inverter at different times, so as to realize the time-sharing operation of the three-phase permanent magnet synchronous motor. The present invention Compared with the traditional method, the number of switches is reduced, the power consumption is reduced, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of motor system and control, and in particular relates to a nine-switch inverter for a double permanent magnet synchronous motor and a control method thereof. Background technique [0002] The permanent magnet synchronous motor (PMSM) is a synchronous motor that generates a synchronous rotating magnetic field by permanent magnet excitation. It has the characteristics of high power efficiency, high power factor, low heat generation, large allowable overload current, and high reliability. Compared with traditional Electrically excited synchronous motors and permanent magnet synchronous motors have the advantages of less loss, high efficiency, and obvious power-saving effects, making permanent magnet synchronous motors rapidly applied and developed in many fields. [0003] More and more domestic and foreign scholars have optimized the body design and control algorithm of permanent magnet synchronous motors. Tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/74H02P27/08
CPCH02P5/74H02P27/085
Inventor 林海夏登凯李登峰李刚王飚梁华刚李晓辉李杰赵毅董媛张懿璞
Owner CHANGAN UNIV
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