Journal ArticleDOI
Single-Stage Electronic Ballast Using Class-DE Low- ${d} \upsilon/{d}t$ Current-Source-Driven Rectifier for Power-Factor Correction
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TLDR
A single-stage high-power-factor electronic ballast with a Class-DE low-dv/dt rectifier as a power-factor corrector is proposed in this paper and experimental results verify the theoretical analysis.Abstract:
A single-stage high-power-factor electronic ballast with a Class-DE low-dv/dt rectifier as a power-factor corrector is proposed in this paper. The power-factor corrector is achieved by using a bridge rectifier that acts as the Class-DE low-dv/dt rectifier. The Class-DE low-dv/dt rectifier is driven by a high-frequency current source, which is obtained from the square-wave output voltage of the Class-D parallel resonant inverter through an LC -series circuit. By using this topology, the conduction angle of the bridge rectifier diode current is increased, and a low line-current harmonic is obtained. A prototype ballast is implemented to drive a 36-W fluorescent lamp. The switching frequency is fixed at about 84 kHz. Experimental results verify the theoretical analysis. The designed electronic ballast has a power factor of 0.99, a total harmonic distortion of 1.3%, a lamp current crest factor of 1.42, and 90% efficiency at full power.read more
Citations
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Journal ArticleDOI
Compact emergency lamp using power LEDs
R. A. Pinto,Marcelo R. Cosetin,M. F. da Silva,Gustavo Weber Denardin,J. Fraytag,Andreia Campos,R.N. do Prado +6 more
TL;DR: A compact emergency lamp using light-emitting diodes (LEDs) to drive and control the current of LEDs arranged in a single enclosure to achieve energy saving, higher luminous efficacy, and higher useful life when replacing traditional fluorescent-based emergency lighting systems.
Journal ArticleDOI
A Single-Stage LED Driver Based on ZCDS Class-E Current-Driven Rectifier as a PFC for Street-Lighting Applications
Satit Mangkalajan,Chainarin Ekkaravarodome,Kamon Jirasereeamornkul,Phatiphat Thounthong,Kohji Higuchi,Marian K. Kazimierczuk +5 more
TL;DR: In this paper, a light-emitting diode (LED) driver for street lighting applications that uses a resonant rectifier as a power-factor corrector (PFC) is presented.
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.
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Optimizing Universal Ballasts Using Magnetic Regulators and Digital Control
TL;DR: A digital control circuit is developed to control both the resonant inverter used to drive the lamp and the dc-dc converter employed to supply the control winding of the magnetic regulator.
Journal ArticleDOI
A Dimmable High Power Factor Single-Switch Electronic Ballast for Compact Fluorescent Lamps With Incandescent Phase-Cut Dimmers
TL;DR: A novel dimmable high-power-factor compact fluorescent lamp (CFL) electronic ballast that is compatible with standard incandescent lamp dimmers is proposed in this paper and system stability analysis that includes the effects of the phase-cut dimmer is provided.
References
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Journal ArticleDOI
Electronic ballast for fluorescent lamps
TL;DR: In this paper, a frequency-domain analysis is given for a Class D voltage-switching power inverter with a load resistance connected in parallel with a resonant capacitor using the fundamental component approximation, design equations are derived to provide easy-to-use design tools.
Journal ArticleDOI
A resonant inverter for electronic ballast applications
M.C. Cosby,R.M. Nelms +1 more
TL;DR: The three basic types of resonant inverters, the series- loaded, parallel-loaded, and theseries-parallel-loading, are compared using fundamental approximation techniques for their applicability in electronic ballasts operating from a low voltage source.
Proceedings ArticleDOI
Class DE inverters and rectifiers for DC-DC conversion
TL;DR: In this article, a new family of Class DE inverters and related rectifiers is presented, based on the Class D RF inverter, the circuits feature Class E switching transitions (zero voltage, zero dv/dt), giving low switching losses despite device capacitance and stored charge, combined with low voltage stress.
Journal ArticleDOI
Characteristics of Various F40 Fluorescent Systems at 60 Hz and High Frequency
TL;DR: In this paper, a comparison of lamp and ballast technologies for fluorescent lighting systems is presented, along with application data and comparison characteristics, luminaire performance information, and application data are discussed.
Journal ArticleDOI
Charge pump power-factor-correction technologies. II. Ballast applications
Jinrong Qian,F.C. Lee +1 more
TL;DR: In this article, a charge pump power-factor-correction (CPPFC) converters using voltage-source (VS) CPPFC, current-source CCPFC, and continuous input current (CIC) CIC CPPF techniques are developed.