Brush-DC Equivalent Control Based Delta Modulation for a PWM Inverter-fed Nine Phase Induction Machine Drive

Gunda, Lovemore (2015) Brush-DC Equivalent Control Based Delta Modulation for a PWM Inverter-fed Nine Phase Induction Machine Drive.

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Official URL: http://ir.nust.ac.zw/xmlui/handle/123456789/755

Abstract

A recently developed control method for multiphase induction machine drives termed the Brush-DC Equivalent control has presented a simpler control strategy that does not use any complex transformations. It has been implemented using a hysteresis current controller and in this paper, a delta modulated current control technique is presented. Delta modulation is proposed in to replace hysteresis control because hysteresis control uses a varying switching frequency which makes harmonic filtering and protection of the inverter difficult. A constant switching delta modulation scheme eliminates these challenges. It has inherent harmonic filtering giving better performance in terms of current and torque ripples. A Brush-DC controlled nine-phase cage rotor induction machine drive is used to investigate the implementation of the delta modulated current controller. The drive is simulated using Matlab/Simulink to determine its performance when stator voltages are used as feedback to the filter in the delta modulator.

Item Type: Article
Uncontrolled Keywords: Multiphase drive,BDCE control,decoupled control,delta modulation,pulse width modulation,nine-phase drive,current controller,simulation,Matlab/Simulink
Divisions: Universities > State Universities > National University of Science and Technology
Depositing User: Mr. Edmore Sibanda
Date Deposited: 15 May 2017 22:00
Last Modified: 15 May 2017 22:00
URI: http://researchdatabase.ac.zw/id/eprint/4545

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