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Title: An Improved Dynamic Response of Voltage Source Inverter using Novel Hysteresis Dead Band Current Controller
Authors: Chitti Babu, B
Reddy, B V
Keywords: Dynamic response
High performance AC drives
Hysteresis current controller
Voltage source inverter (VSI)
Issue Date: 29-Aug-2009
Publisher: IEEE
Citation: 18th Annual Symposium on Emerging Needs in Computing, Communication, Signals and Power- 2009, 29th August, 2009
Abstract: Due to high dynamic response, current-controlled pulse width modulated (PWM) voltage source inverters (VSI) are widely used in high performance AC drive system for Industrial applications. The main objective of current controller is to force the load current vector to follow the reference trajectory in the three-phase load. There are three types of current controllers used in voltage source inverters such as, ramp comparator current controller, hysteresis current controller and predictive current controller etc. This paper mainly focused on novel hysteresis current controller for PWM voltage source inverter using square type hysteresis dead band. This controller provides excellent dynamic response. The study was undertaken by the MATLAB/ Simulink environment in order to validate the results. Fast Fourier transform technique is used to find the THD levels of the three-phase load current waveforms.
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