An improved sapce phasor based current hysteresis controller with reduced switching frequency variations using variable parabolic bands
Data(s) |
13/08/2007
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Resumo |
A current error space phasor based simple hysteresis controller is proposed in this paper to control the switching frequency variation in two-level pulsewidth-modulation (PWM) inverter-fed induction motor (IM) drives. A parabolic boundary for the current error space phasor is suggested for the first time to obtain the switching frequency spectrum for output voltage with hysteresis controller similar to the constant switching frequency voltage-controlled space vector PWM-based IM drive. A novel concept of online variation of this parabolic boundary, which depends on the operating speed of motor, is presented. A generalized technique that determines the set of unique parabolic boundaries for a two-level inverter feeding any given induction motor is described. The sector change logic is self-adaptive and is capable of taking the drive up to the six-step mode if needed. Steady-state and transient performance of proposed controller is experimentally verified on a 3.7-kW IM drive in the entire speed range. Close resemblance of the simulation and experimental results is shown. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/41358/1/Novel_Current.pdf Tekwani, PN and Kanchan, RS and Gopakumar, K (2007) An improved sapce phasor based current hysteresis controller with reduced switching frequency variations using variable parabolic bands. In: IEEE Transactions on Industrial Electronics, Oct. 2007, Ahmedabad. |
Publicador |
IEEE |
Relação |
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4287156 http://eprints.iisc.ernet.in/41358/ |
Palavras-Chave | #Electronic Systems Engineering (Formerly, (CEDT) Centre for Electronic Design & Technology) |
Tipo |
Conference Paper PeerReviewed |