Generation of 42-sided polygonal Voltage Space Vector Structure for suppression of lower order harmonics in im Drive Applications

Dewani, R and Majumder, MG and Rakesh, R and Gopakumar, K and Umanand, L and Zieliski, D and Jarzyna, W (2020) Generation of 42-sided polygonal Voltage Space Vector Structure for suppression of lower order harmonics in im Drive Applications. In: 29th IEEE International Symposium on Industrial Electronics, ISIE 2020, 17-19, June 2020, Delft, Netherlands, pp. 313-318.

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Abstract

The work proposes a new power circuit topology to generate a 42-sided polygonal space vector structure for filtering out the lower order harmonics up to 39th order from motor phase voltage through out the modulation range. In the proposed scheme, the open stator winding of the induction motor is fed with a primary inverter from one end and a secondary inverter from the other end. The primary inverter is fed with a single DC source for suppling the active power for the drive operation. The secondary inverter works as the switched capacitive filter to eliminate the lower order harmonics generated by the primary inverter. The machine phase voltage is devoid of all the lower order harmonics (5th, 7th,..39th) which results in smoother torque profile for motor operation. The proposed scheme also extends the linear modulation range till 99.82. A unique pulse width modulation technique is used to reduce switching transitions in the primary inverter, causing lower switching losses in the proposed inverter scheme. Also, the proposed scheme is studied extinsively with MATLAB simulation and validated with hardware results.

Item Type:	Conference Paper
Publication:	IEEE International Symposium on Industrial Electronics
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright of this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Electric inverters; Harmonic analysis; Induction motors; Industrial electronics; MATLAB; Vector spaces; Voltage control, Capacitive filters; Linear modulations; Lower order harmonics; Lower switching loss; Matlab simulations; Power circuit topologies; Switching transitions; Voltage space vectors, Modulation
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	02 Sep 2020 10:23
Last Modified:	02 Sep 2020 10:23
URI:	http://eprints.iisc.ac.in/id/eprint/66433

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