Real time PI-backstepping induction machine drive with efficiency optimization. (September 2017)

• Record Type: Journal Article
• Authors: Farhani, Fethi; Ben Regaya, Chiheb; Zaafouri, Abderrahmen; Chaari, Abdelkader
• Is Part Of: ISA transactions. Volume 70(2017:Sep.)
• Page Start: 348
• Page End: 356
• Publication Date: 2017-09
• Subjects: Field Oriented Control -- Efficiency -- Induction machine -- MIMO PI-backstepping -- Optimization; Engineering instruments -- Periodicals; Engineering instruments; Periodicals; Electronic journals; 629.805
• DOI: 10.1016/j.isatra.2017.07.003
• Languages: English
• ISSNs: 0019-0578

Abstract

Abstract: This paper describes a robust and efficient speed control of a three phase induction machine (IM) subjected to load disturbances. First, a Multiple-Input Multiple-Output (MIMO) PI-Backstepping controller is proposed for a robust and highly accurate tracking of the mechanical speed and rotor flux. Asymptotic stability of the control scheme is proven byLyapunov Stability Theory. Second, an active online optimization algorithm is used to optimize the efficiency of the drive system. The efficiency improvement approach consists of adjusting the rotor flux with respect to the load torque in order to minimize total losses in the IM. A dSPACE DS1104 R&D board is used to implement the proposed solution. The experimental results released on 3 kW squirrel cage IM, show that the reference speed as well as the rotor flux are rapidly achieved with a fast transient response and without overshoot. A good load disturbances rejection response and IM parameters variation are fairly handled. The improvement of drive system efficiency reaches up to 180 % at light load.