Journal ArticleDOI
A new control strategy to improve the performance of a PWM AC to DC converter under unbalanced operating conditions
Prasad Enjeti,S.A. Choudhury +1 more
- Vol. 8, Iss: 4, pp 493-500
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TLDR
In this article, a new control strategy is presented to selectively cancel the generated lower-order abnormal harmonics at the output and input terminals and thereby to preserve the high-performance features of a PWM AC-to-DC power converter.Abstract:
Abnormal harmonics of significant magnitude are generated at the output and input terminals of a PWM (pulse-width-modulated) AC-to-DC power converter under unbalanced operating conditions. A new control strategy is presented to selectively cancel the generated lower-order abnormal harmonics at the output and input terminals and thereby to preserve the high-performance features of a PWM AC-to-DC power converter. The proposed technique essentially involves computing the sequence components of the unbalanced input supply and suitably counter-unbalances the PWM gating signals of the power converter switches to cancel the generated abnormal harmonics. The technique is essentially a feedforward approach and is suitable for higher-power GTO (gate turn-off thyristor) type PWM AC-to-DC power converters. A procedure for implementing this technique in real time is discussed. Selected results are verified experimentally on a prototype PWM AC-to-DC power converter. >read more
Citations
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Journal ArticleDOI
A review of single-phase improved power quality AC-DC converters
TL;DR: This paper presents an exhaustive review of three-phase improved power quality AC-DC converters configurations, control strategies, selection of components, comparative factors, recent trends, their suitability, and selection for specific applications.
Journal ArticleDOI
Dual current control scheme for PWM converter under unbalanced input voltage conditions
Hong-Seok Song,Kwanghee Nam +1 more
TL;DR: The authors demonstrated the effectiveness of the proposed control scheme by using computer simulation and experiments to eliminate the DC link voltage ripple and the DC component of the reactive power.
Journal ArticleDOI
Assessment of Voltage Unbalance
A. Jouanne,B. Banerjee +1 more
TL;DR: In this article, the authors present a comprehensive summary of the causes and effects of voltage unbalance and discuss related standards, definitions, and mitigation techniques, as well as the resulting adverse effects on the system and on equipment such as induction motors and power electronic converters and drives.
Journal ArticleDOI
Nonlinear predictive control with application to manipulator with flexible forearm
B.J. Song,A.J. Koivo +1 more
TL;DR: A nonlinear predictive controller is designed on the basis of a neural network plant model using the receding-horizon control approach, and the applicability of the approach is illustrated through computer simulations.
Journal ArticleDOI
A control scheme in hybrid synchronous-stationary frame for PWM AC/DC converter under generalized unbalanced operating conditions
Yongsug Suh,Thomas A. Lipo +1 more
TL;DR: In this article, a new control scheme of improved transient response for the pulsewidth-modulation ac/dc converter under generalized unbalanced operating conditions was proposed by employing dual current regulators in positive-and negative-rotating synchronous frames.
References
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Journal ArticleDOI
Recent progress in the development in solid-state AC motor drives
TL;DR: The author summarizes important developments in AC drive design that have occurred in the past several years by discussing converter technology, AC motor technology, and control technology for AC drives, covering online and offline parameter identification and efficiency-maximizing control.
Recent Progress in the Development of Solid State AC Motors Drives
TL;DR: In this article, the authors summarized important developments in ac drive design which has occured in the past several years and which could be a portentous sign of changes which may soon occur in the ac drive industry.
Proceedings ArticleDOI
Unbalanced PWM converter analysis and corrective measures
TL;DR: In this paper, the analysis of an unbalanced PWM AC-to-DC converter by the transfer function approach is presented, which provides for closed-form assessment of all harmonics generated under unbalanced operating conditions by suitably decomposing the converter transfer function into positive and negative sequence components.
Proceedings ArticleDOI
Interconnection system with single phase IGBT PWM CSI between photovoltaic arrays and the utility line
TL;DR: In this paper, a single-phase utility interactive photovoltaic (PV) system, including the insulated-gate bipolar-transistor (IGBT) current-source pulsewidth modulation (PWM) inverter with two auxilliary IGBTs is described.
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