NDLI: A hybrid current controller for a 1-phase PWM rectifier combining hysteresis and carrier-based schemes to achieve a zero current error and unipolar PWM waveforms

Content Provider	IEEE Xplore Digital Library
Author	Salmon, J. Hao Zhang
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada (Salmon, J.; Hao Zhang)
Abstract	A current controller is described for 1-phase PWM rectifiers that combines both the functionality of hysteresis-based and carrier based controllers. The development of this current controller is described with the aid of generic PWM controllers that use a sinusoidal modulating signal and a signal integrator. These controllers mimic the operation of the 1-phase PWM rectifier and are used to determine the optimal gain-constant associated the current-error feedback signal. The resultant current controller is relatively insensitive to variations in rectifier parameters such as the supply inductance and the dc link voltage magnitude. The controller combines the excellent current waveshaping ability of hysteresis-based controllers together with the constant switching frequency of carrier-based controllers. The main controller features include: real-time generation of the sinusoidal amplitude modulation signal from the PWM signal; elimination of phase-shifts caused by the limited rate-of-change of the rectifier current; a near zero current-error over a PWM half-cycle; no skewing effects in the current-error signal. Simulation results, using a per-unit system of values, are used to illustrate the step-by-step development of the current controller. A DSP-based controller is used, together with an IGBT rectifier, to demonstrate the experimental operation of the controller.
Sponsorship	IEEE Power Electon. Soc
Starting Page	1239
Ending Page	1245
File Size	501745
Page Count	7
File Format	PDF
ISBN	0780383990
ISSN	02759306
DOI	10.1109/PESC.2004.1355599
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Rectifiers Hysteresis Error correction Optimal control Feedback Voltage control Inductance Switching frequency Signal generators
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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