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A Medium-Voltage Inverter-Fed IM Drive Using Multilevel 12-Sided Polygonal Vectors, With Nearly Constant Switching Frequency Current Hysteresis Controller

Azeez, Najath Abdul and Dey, Anubrata and Mathew, K and Mathew, Jaison and Gopakumar, K and Kazmierkowski, Marian P (2014) A Medium-Voltage Inverter-Fed IM Drive Using Multilevel 12-Sided Polygonal Vectors, With Nearly Constant Switching Frequency Current Hysteresis Controller. In: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 61 (4). pp. 1700-1709.

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Official URL: http://dx.doi.org/10.1109/TIE.2013.2266083

Abstract

In this paper, a current error space vector (CESV)-based hysteresis current controller for a multilevel 12-sided voltage space vector-based inverter-fed induction motor (IM) drive is proposed. The proposed controller gives a nearly constant switching frequency operation throughout different speeds in the linear modulation region. It achieves the elimination of 6n +/- 1, n = odd harmonics from the phase voltages and currents in the entire modulation range, with an increase in the linear modulation range. It also exhibits fast dynamic behavior under different transient conditions and has a simple controller implementation. Nearly constant switching frequency is obtained by matching the steady-state CESV boundaries of the proposed controller with that of a constant switching frequency SVPWM-based drive. In the proposed controller, the CESV reference boundaries are computed online, using the switching dwell time and voltage error vector of each applied vector. These quantities are calculated from estimated sampled reference phase voltages. Vector change is decided by projecting the actual current error along the computed hysteresis space vector boundary of the presently applied vector. The estimated reference phase voltages are found from the stator current error ripple and the parameters of the IM.

Item Type: Journal Article
Additional Information: copyright for this article belongs to IEEE Xplore
Keywords: Hysteresis pulsewidth modulation (PWM) control; induction motor (IM) drives; multilevel inverter; 12-sided polygonal voltage space vectors
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Depositing User: Id for Latest eprints
Date Deposited: 28 Nov 2013 11:25
Last Modified: 28 Nov 2013 11:25
URI: http://eprints.iisc.ac.in/id/eprint/47833

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