Journal ArticleDOI
Regulation of a PWM rectifier in the unbalanced network state using a generalized model
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TLDR
In this article, a generalized model of the PWM rectifier is presented using the Clarke notation in order to separate the positive and negative sequences of a PWM signal and an optimized regulation is presented for the latter case.Abstract:
This study concerns the modeling and control of a pulse-width-modulated (PWM) rectifier in the case of network variations. The aim is to limit and stabilize variations of DC output voltage and line currents in such circumstances. Network variations can result in costly damage to power converters and their loads but a power converter such as the PWM rectifier, using cascade digital control, offers many capabilities to stabilize the system with optimized control. A generalized model of the PWM rectifier is first presented using the Clarke notation in order to separate the positive and negative sequences. The model is also extended to the harmonics. The cases of harmonic disturbance and an unbalanced network are then analyzed and an optimized regulation is presented for the latter case, validating the generalized model. Experimental results are proposed. The line current compensation loop method coupled with identification of network parameters offers a good solution to stabilize the PWM rectifier in an unbalanced network.read more
Citations
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Journal ArticleDOI
Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions
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Journal ArticleDOI
Dual current control scheme for PWM converter under unbalanced input voltage conditions
Hong-Seok Song,Kwanghee Nam +1 more
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Design of $LCL$ Filters of Active-Front-End Two-Level Voltage-Source Converters
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Nonlinear predictive control with application to manipulator with flexible forearm
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Flexible Voltage Support Control for Three-Phase Distributed Generation Inverters Under Grid Fault
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References
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Journal ArticleDOI
Design aspects of synchronous PWM rectifier-inverter systems under unbalanced input voltage conditions
TL;DR: In this article, a complete analysis of a synchronous front-end PWM rectifier-inverter system under unbalanced input voltage conditions is presented, including the harmonic assessment of input/output current and voltage waveforms.
Proceedings ArticleDOI
Regulation of a PWM rectifier in the unbalanced network state
TL;DR: In this article, the modeling and control of a PWM rectifier in the case of network variations is studied, where the aim is to limit and stabilize stable variation of DC output voltage and line currents in such circumstances.
Journal ArticleDOI
Power system disturbance patterns
TL;DR: In this article, a power supply system monitored continuously at a single site over a two-year period is presented, and the problems that might evolve from short-term site monitoring are discussed.
Proceedings ArticleDOI
Maintaining the synchronism of an AC adjustable speed drives during short supply interruptions for an optimal and automatic soft restart
A. David,E. Lajoie-Mazenc,C. Sol +2 more
TL;DR: This paper presents a mitigation strategy which aims to maintain the inverter synchronized on the induction machine during short supply interruptions and allows an automatic soft restart right after the power system recovery.
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