A novel S type sliding-mode observer used in vector control for two-stage matrix converter-permanent magnet synchronous motor

作者：Song Weizhang^*; Ma Baojian; Wang Bin; Zhong Yanru; Sun Xiangdong

来源：Transactions of China Electrotechnical Society, 2014, 29(8): 81-89.

• Observer structure
• Permanent Magnet Synchronous Motor
• Simple structures
• Sliding mode observers
• Sliding-mode observer
• Strong robustness
• Two stage matrix converter
• Twostage matrix converter (TSMC)

A novel S type switch function is adopted instead of conventional sign switch function to overcome two main problems of conventional sliding mode observer, i. e., chattering and filter delay. The above problems are all solved effectively meanwhile the low pass filter and angle compensation of observer can be eliminated and the excellent performance of fast response, strong robustness and simple structure is obtained. The observer structure and jitters elimination principle are analyzed. The sliding mode gain coefficient is given based on stability criterion. In addition, this S type observer is applied to the system of permanent magnet synchronous motor(PMSM) driven by two-stage matrix converter(TSMC). The system not only owns the excellent driving-performance, but also can always achieve green input performance. The feasibility and validity of the proposed strategy are verified.

• 出版日期2014