Journal ArticleDOI
Integrated high-quality rectifier-regulators
TLDR
A new family of AC-DC converters is derived which integrate the functions of low-harmonic rectification, low-frequency energy storage, and wide-bandwidth output voltage control into a single converter containing one, two, or four active switches.Abstract:
A new family of AC-DC converters is derived which integrate the functions of low-harmonic rectification, low-frequency energy storage, and wide-bandwidth output voltage control into a single converter containing one, two, or four active switches. These converters utilize a discontinuous conduction mode input inductor, an internal energy storage capacitor, and transformer secondary circuits which resemble the bridge, forward, flyback, or Cuk DC-DC converters. A large-signal equivalent circuit model for this family is presented, which uses the "loss-free resistor" concept. Design strategies and experimental results are given. High-performance regulation with satisfactory line-current harmonics is demonstrated with conventional duty-ratio control. Further improvements in line current are possible by simultaneous duty-ratio and switching-frequency control.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
Single phase power factor correction: a survey
TL;DR: A review of the most interesting solutions for single phase and low power applications is carried out in this article, where the major advantages and disadvantages are highlighted and the field of application is found.
Journal ArticleDOI
Active Damping in DC/DC Power Electronic Converters: A Novel Method to Overcome the Problems of Constant Power Loads
A.M. Rahimi,Ali Emadi +1 more
TL;DR: The implementation of novel active-damping techniques on dc/dc converters has been shown and the proposed active- damping method is used to overcome the negative impedance instability problem caused by the CPLs.
Journal ArticleDOI
Comprehensive Study of Single-Phase AC-DC Power Factor Corrected Converters With High-Frequency Isolation
TL;DR: This paper presents a comprehensive study on state of art of power factor corrected single-phase AC-DC converters configurations, control strategies, selection of components and design considerations, performance evaluation, power quality considerations, selection criteria and potential applications, latest trends, and future developments.
Patent
Power control system for current regulated light sources
TL;DR: In this paper, a light emitting diode (LED) lighting system includes a PFC and output voltage controller and a LED lighting power system, and the controller advantageously operates from an auxiliary voltage less than a link voltage generated by the LEM power system.
References
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Proceedings ArticleDOI
A general unified approach to modelling switching-converter power stages
R.D. Middlebrook,Slobodan Cuk +1 more
TL;DR: A new canonical circuit model is proposed, whose fixed topology contains all the essential inputr-output and control properties of any dc-todc switching converter, regardless of its detailed configuration, and by which different converters can be characterized in the form of a table conveniently stored in a computer data bank to provide a useful tool for computer aided design and optimization.
Journal ArticleDOI
A general unified approach to modelling switching-converter power stages
R.D. Middlebrook,Slobodan Cuk +1 more
TL;DR: In this article, a canonical circuit model is proposed, whose fixed topology contains all the essential input-output and control properties of any d.c.-to-d.c. switching converter, regardless of its detailed configuration, and by which different converters can be characterized in the form of a table conveniently stored in a computer data bank.
Proceedings ArticleDOI
A general unified approach to modelling switching DC-tO-DC converters in discontinuous conduction mode
Slobodan Cuk,R.D. Middlebrook +1 more
TL;DR: A method for modelling switching converters in the discontinuous conucction mode is developed, whose starting point is the unified state-space representation, and whose end results is a complete linear circuit model which correctly represents all essential features, namly, the input, output, and transfer properties.
Proceedings ArticleDOI
Design of a simple high-power-factor rectifier based on the flyback converter
TL;DR: In this article, an equivalent circuit model for the discontinuous conduction mode flyback converter based on the loss-free resistor concept is presented, and a simple first-order approximation for the line current distortion and phase shift caused by 120 Hz duty cycle variations is derived.
Proceedings ArticleDOI
Integrated high quality rectifier-regulators
TL;DR: In this paper, a family of AC-to-DC converters which integrate the functions of low harmonic rectification, low frequency energy storage, and wide bandwidth output voltage control into a single converter containing one, two, or four active switches is presented.