Voltage vector selection method and multi-motor synchronous control system established by same

• Main Authors: CUI JIEFAN, LI LIN, XING FENG
• Format: Patent
• Language: Chinese; English
• Published: 09.03.2011
• 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 a voltage vector selection method and a multi-motor synchronous control system established by the same. The method comprises the following steps: detecting the synchronous error of the multi-motor operation, the stator flux linkage error, the electromagnetic torque error and a sector in which the flux linkage is located, and creating a novel voltage vector switch table suitable for multi-motor synchronous control; and selecting a proper space voltage vector from the novel voltage vector switch table. The system comprises a novel voltage vector switch table-based multi-motor synchronous controller, an inverter, a motor and a flux linkage torque estimation module; and the novel voltage vector switch table-based multi-motor synchronous controller mainly consists of a synchronous error comparison module, a flux linkage comparison module, a torque comparison module and a switch voltage vector module. The invention can well realize the synchronous control performanceand quick response contro