Journal ArticleDOI
Optimization and Performance Evaluation of an AC-Chopper Ballast for HPS Lamps
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TLDR
The design process of the ac-chopper ballast is reviewed, the design tradeoffs caused by the single-stage topology are discussed, and the analytical and simulation results are verified with measurements of a 250-W prototype system.Abstract:
Electronic ballasts for high-pressure sodium lamps based on an ac-chopper topology are proposed as a cheaper and less complex alternative to the industry-standard low-frequency square-wave ballasts. In this paper, the design process of the ac-chopper ballast is reviewed, and the design tradeoffs caused by the single-stage topology are discussed. The analytical and simulation results are verified with measurements of a 250-W prototype system, including a detailed list of the losses for the different circuit components and electromagnetic compatibility measurements. Due to the disadvantages of the single-stage topology, a comparison to a two-stage ballast using the inverter stage of the ac-chopper ballast with a separate power factor correction stage is provided.read more
Citations
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Journal ArticleDOI
Single-Stage High Power Factor Converters Requiring Low DC-Link Capacitance to Drive Power LEDs
Zito Palhano da Fonseca,Arnaldo J. Perin,Eloi Agostini Junior,Claudinor Bitencourt Nascimento +3 more
TL;DR: This paper proposes two nonisolated single-stage high power factor converters requiring low dc-link capacitance for power LEDs systems and an accurate mathematical analysis valid for the two converters is detailed, yielding the elaboration of a step-by-step design procedure.
Journal ArticleDOI
Comparative study of 250 W high pressure sodium lamp operating from both conventional and electronic ballast
Ahmed A. Mansour,Osama A. Arafa +1 more
TL;DR: In this article, a comparative study of the operational characteristics of a 250-W HPS lamp when fed by conventional ballast versus electronic ballast is presented, which gives solid numerical evidences of the superior performance of the electronic over the conventional Ballast.
Journal ArticleDOI
S-CLC Compensated Wireless Power Transfer With Pulse-Frequency-Modulation Control for Dimmable Low-Pressure Sodium Lamps
TL;DR: In this paper, a wireless power transfer (WPT) with series-capacitor-inductor-capaceitor (S-CLC) compensation network and pulse-frequency-modulation (PFM) control for dimmable low-pressure sodium (LPS) lamps is proposed.
Journal ArticleDOI
FPGA-based genetic algorithm implementation for AC chopper fed induction motor
TL;DR: In this paper, a GA-based harmonic elimination technique is proposed for designing AC chopper, which is used to calculate optimal firing angles to eliminate lower order harmonics in output voltage.
Journal ArticleDOI
Realization of an dimmable electronic ballast for a discharge lamps fed by an LSCSCP circuit and a PFC stage
TL;DR: In this article , an electronic ballast for discharge lamps is presented, which consists of two stages: a boost-buck chopper that performs power factor correction and provides an approximately variable DC link voltage to drive the second stage and a half-bridge MOSFET inverter with an improved series-parallel inductor-capacitor-inductor (LsCpLp) resonant circuit.
References
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Journal ArticleDOI
Design of a two-stage low-frequency square-wave electronic ballast for HID lamps
TL;DR: In this article, a two-stage low-frequency square-wave electronic ballast for high-intensity discharge lamps is presented, which consists of a power-factor-correction stage to achieve power factor correction and an inverter to supply the lamp with lowfrequency square wave current.
Proceedings ArticleDOI
Calorimetric Power Loss Measurement for Highly Efficient Converters
TL;DR: In this paper, a closed-type calorimeter is realized with a double-jacketed chamber which enables the power loss measurement between 10W and 200W for power converter systems of several kW.
Journal ArticleDOI
Energy Saving of Large-Scale High-Intensity-Discharge Lamp Lighting Networks Using a Central Reactive Power Control System
TL;DR: It is found that the energy-saving unit can reduce overall system power at least 40% without causing lamp flickering, and it is envisaged that 25%-35% of energy saving can be achieved in large public lighting applications.
Journal ArticleDOI
Design and performance of an electronic ballast for high-pressure sodium (HPS) lamps
Shmuel Ben-Yaakov,M. Gulko +1 more
TL;DR: The experimental results reveal that for the frequency range of this study, the HPS lamp is free of the acoustic resonance problem and that the resistance is practically independent of the power level and operating frequency.
Journal ArticleDOI
Novel Three-Phase CM/DM Conducted Emission Separator
TL;DR: Its evaluation is presented through frequency response measurements and CE tests performed on a three-phase motor drive and verifies that the network is capable of separating the CM and DM information in a CE measurement condition.