Journal ArticleDOI
A PWM AC to DC converter with fixed switching frequency
R. Wu,Shashi B. Dewan,G.R. Slemon +2 more
- Vol. 26, Iss: 5, pp 880-885
TLDR
In this article, a predicted current control strategy with fixed switching frequency (PCFF control) is proposed for a PWM (pulsewidth-modulated) AC-to-DC converter, and experimental results show that the converter under PCFF control has bidirectional power transmission ability with high dynamic performance.Abstract:Â
For a PWM (pulsewidth-modulated) AC-to-DC converter, a predicted current control strategy with fixed switching frequency (PCFF control) is proposed. Its principle and implementation are described, and experimental results are provided which show that the converter under PCFF control has bidirectional power transmission ability with high dynamic performance. The line currents are close to sinusoidal with unit power factor. The PCFF control produces a better switching pattern than hysteresis current control. This results in a reduction of harmonics in the line currents and lower stress on the switching devices. >read more
Citations
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Journal ArticleDOI
Current control techniques for three-phase voltage-source PWM converters: a survey
TL;DR: Current control techniques for three-phase voltage-source pulsewidth modulated converters, including bang-bang (hysteresis, delta modulation) controllers and predictive controllers with on-line optimization are reviewed.
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
A new mathematical model and control of a three-phase AC-DC voltage source converter
V. Blasko,V. Kaura +1 more
Abstract: A new mathematical model of the power circuit of a three-phase voltage source converter (VSC) was developed in the stationary and synchronous reference frames. The mathematical model was then used to analyze and synthesize the voltage and current control loops for the VSC. Analytical expressions were derived for calculating the gains and time constants of the current and voltage regulators. The mathematical model was used to control a 140-kW regenerative VSC. The synchronous reference-frame model was used to define feedforward signals in the current regulators to eliminate the cross coupling between the d and q phases. It allowed the reduction of the current control loops to first-order plants and improved their tracking capability. The bandwidths of the current and voltage-control loops were found to be approximately 20 and 60 times (respectively) smaller than the sampling frequency. All control algorithms were implemented in a digital signal processor. All results of the analysis were experimentally verified.
Journal ArticleDOI
A novel control to actively damp resonance in input LC filter of a three-phase voltage source converter
V. Blasko,V. Kaura +1 more
TL;DR: In this paper, a control strategy for actively damping high-frequency resonance (above 1.5 kHz) in the input LC filter is presented, which prevents pollution of the utility by the current ripple due to the PWM switching.
Journal ArticleDOI
Extended State Observer-Based Sliding-Mode Control for Three-Phase Power Converters
TL;DR: An extended state observer (ESO) based second-order sliding-mode (SOSM) control for three-phase two-level grid-connected power converters and experimental results are presented to validate the control algorithm under a real power converter prototype.
References
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Journal ArticleDOI
Current Control of VSI-PWM Inverters
David M. Brod,Donald W. Novotny +1 more
TL;DR: In this article, the inherent limitations of commanding voltages and currents in a three-phase load with an inverter are examined, and an overview of several current controllers described in the literature is presented, and computer simulations are used to compare performance.
Journal ArticleDOI
A Three-Phase Controlled-Current PWM Converter with Leading Power Factor
TL;DR: In this paper, a three-phase bipolartransistor controlled-current PWM power modulator with a 360-degree power angle range was used to operate with near-sinusoidal currents at 60 Hz.
Journal ArticleDOI
Design and Experimental Results of a Brushless AC Servo Drive
TL;DR: In this article, a typical control actuator system consisting of a brushless synchronous motor and a transistor chopper inverter is described, and several types of construction are described.
Journal ArticleDOI
An integrated AC drive system using a controlled-current PWM rectifier/inverter link
TL;DR: Two identical three-phase, bipolar transistor, controlled-current, pulsewidth modulation (PWM) power modulators are integrated so that one functions as a rectifier and the other as an inverter in an AC drive system.
Journal ArticleDOI
Characteristics of a Controlled-Current PWM Rectifier-Inverter Link
TL;DR: In this paper, two controlled-current pulsewidth-modulated (PWM) converters have been integrated into rectifier-inverter links of variable-speed ac motor drives.
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