Discrete control in high-performance adjustable speed drives system

作者：Hu Sideng^*; Zhao Zhengming; Yuan Liqiang; Lu Ting; Wang Xuesong

来源：Proceedings of the CSEE, 2010, 30(30): 1-6.

• Adjustable speed drives
• Anti-interference
• ASD system
• Critical technique
• Design method
• Digital controllers
• Digital system
• Discrete Control
• Discrete systems
• Discrete time
• Flux observer
• Flux observers
• Global errors
• Industrial fields
• Iteration step
• Matching methods
• Parameter identification
• Sensor less control
• System-based

The adjustable speed drives (ASD) system based on the digital system is widely applied in the industrial field. This paper focused on three specific aspects about the discrete control strategy for the ASD system, i. e., the discrete time matching method, synchronization of the input and limitation of the output. On this basis, three critical techniques applied in the high-performance ASD system for the induction motor, i. e., DC pre-excitation, parameter identification and flux observer in the sensorless control, were effectively implemented. The improved synchronization and anti-interference solutions were also introduced, and the relationship between the global error and the iteration step was analyed. The experiments on the 55 kW and the 160 kW ASD systems validated the effectiveness of the proposed design methods.

• 出版日期2010
• 单位清华大学