Anti-reversion starting device of line-start permanent magnet synchronous motor and control method thereof

• Main Authors: YAN BAOGUANG, YU FENG, XU JIAQUN
• Format: Patent
• Language: Chinese; English
• Published: 12.05.2010
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses an anti-reversion starting device of a line-start permanent magnet synchronous motor and a control method thereof. The anti-reversion starting device comprises a microprocessor unit, a position detection unit, an inverter and the line-start permanent magnet synchronous motor. The rotor position detection unit is connected with hall elements in the line-start permanent magnet synchronous motor, wherein the hall elements are positioned on an end cover and/or a stator iron core in the motor and arranged at equal electrical angle intervals, and the signals of the hall elements are sent to the rotor position detection unit; the rotor position detection unit is connected with the microprocessor unit and processes input; the microprocessor unit is connected with the inverter and outputs six-channel PWM signals to the inverter to control the on and off of the inverter after the signals of the hall elements are processed by the microprocessor unit; and the inverter is connected with the three-p