EPE Association: EPE-PEMC 2004 - Topic 02-1: Soft switching converters (resonant, ZVS, ZCS)

EPE-PEMC 2004 - Topic 02-1: Soft switching converters (resonant, ZVS, ZCS)
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 02: POWER ELECTRONICS CONVERTERS > EPE-PEMC 2004 - Topic 02-1: Soft switching converters (resonant, ZVS, ZCS)

   [return to parent folder]

   Choosing Parameters Of The Snubber With Partial Recuperation Of The Commutation Energy For Pwm Converters
By G. V Bareghamyan(am), A. N. Melkonyan(de) [View]
[Download]

Abstract: This paper presents detailed analysis of switching transients in passive snubber with partial recuperation of commutation energy. Relationship between different boundary parameters, practical calculation example and component selection for optimal circuit design are presented. Transformerbased energy regenerative circuitry to recover the energy captured in the snubber capacitors is proposed.

   Comparison Among Different Topologies Of Dc-Dc Converter For Fuel-Cell-Based Inverter System
By G. Gentile, S. Meo, F. Esposito [View]
[Download]

Abstract: In the paper a new zvs half-bridge current-fed dc-dc boost converter for fuel-cell based inverter system is presented and numerical results will be shown and discussed, compared with other topologies. Different combinations of current-fed dcdc and voltage-fed dc-dc converter for a fuel-cell system is analyzed. The results demonstrate that the suggested solution is a better choice regarding fast dynamic response and efficiency.

   Design Of High Efficiency, Low Noise Zvs-Cv Power Supply For Laser Diode Bars
By Michal Widlok [View]
[Download]

Abstract: Design and analysis of high current, very low noise power supply for laser diode bars is presented. Special attention was made to reduce EMI (electromagnetic interference) and other generated noise and increase efficiency especially at lowload or no-load operation. Presented power supply is softswitched ZVS-CV (zero voltage switching – clamped voltage) type with special resonant components included and intelligent controller. Experimental results as well as electrical design guidelines are presented, and problem areas are outlined. The experimental power supply tested in the laboratory has 1.6kW output at 20V 80A, achieving 96% efficiency at full load and 18W losses at no load operation.

   Discrete Time Control Of Resonant Dual Channel Dc-Dc Converters
By J. Hamar, I. Nagy, R. Barabas, O. Dranga, H. Funato, S. Ogasawara [View]
[Download]

Abstract: The paper presents a discrete time transient analysis of novel dual channel resonant dc-dc converters. Control algorithms are also proposed to produce the desired output voltage even in case of disturbances.

   EKF-Based Output Voltage Estimation Of 3rd Order Lcc Resonant Converters With Significant Load Variations
By A. J. Gilbert, C. M. Bingham, B. S. Bhangu, M. P. Foster, D. A. Stone, D. Howe [View]
[Download]

Abstract: The discrete-time Extended Kalman Filter (EKF) is employed to eliminate the requirement for isolated output feedback sensors in 3rd-order LCC resonant power converters. Unlike previously reported methodologies, it is shown that the proposed formulation can accommodate output load variations and output short-circuit fault conditions.

   High Frequency Power Supply For Emission Control System Applied To Marine Diesel Engine
By Sachio Kubota, Muneo Sato, Fumio Ito, Heinosuke Kakuage, Nobuo Ogawa, Yoshihiro Shimaoka [View]
[Download]

Abstract: This paper describes the diesel emission control system to reduce Particulate Matters (PM) in exhaust gas from marine diesel engine, and the power supply for this system. In this system, some advantages, such as excellent temperature control and maintenance free, are obtained by utilizing an induction heating. PWM (Pulse Width Modulation) inverter is proposed as power supply for this system, and the circuit characteristics are clarified by numerical analysis.

   High Power Factor With Minimum Kva Rating Design For Modified Series Parallel Resonant Converter
By S. S. Tanavade, Mrs. M. A. Chaudhari, H. M. Suryawanshi, K. L. Thakre [View]
[Download]

Abstract: This paper presents systematic design of Modified Series-Parallel resonant converter (MSPRC) for its operation in high input line power factor mode with minimum total kVA rating of the reactive components. A step-by-step design procedure for high power factor operation and reduction of the stresses on the resonant components of the converter is given. PSPICE simulation results of a typical MSPRC are given to validate the analytical design procedure. Finally, results on a laboratory prototype are presented to substantiate the simulation results.

   Operation Of A Dual Channel Resonant Dc-Dc Buck Converter At Switching Frequencies Above The Resonant Frequency
By Balazs Buti, Istvan Nagy [View]
[Download]

Abstract: The paper deals with a dual channel resonant DCDC Buck converter analyzing the high switching frequency region of its operation. In the converter the energy is transmitted through two channels from the input to the output using a switched capacitor. Due to the two channels its application is recommended in the medium or higher power ranges. An advantage of the converter is that in discontinuous current conduction mode (DCM) it can work in soft-switched mode too. A drawback of DCM operation is the higher output voltage ripple and the unfavourable utilization of the power transmission capabilities of its components compared to the continuous current conduction (CCM) operation. The main objective and the original contribution of the current paper are to present the conditions of the operation above the resonant frequency of its inherent ringing circuit, and to represent its beneficial effects. The considerations are verified by simulation results.

   Three-Phase Soft-Switching Inverter With High-Frequency Transformer-Assisted Auxiliary Resonant Snubber
By Eiji Hiraki, Mutsuo Nakaoka, Shigeyuki Sugimoto, Shigeaki Ogawa [View]
[Download]

Abstract: In this paper, a prototype of the auxiliary resonant commutated snubber circuit (ARCS) incorporating a pulse-current feedback high-frequency transformer with power regeneration loop is described for three-phase inverter from a practical point of view. For three-phase voltage-fed soft-switching inverter, soft-switching active power filter and active PFC rectifier, the soft-switching inverter topology treated here has significant advantages of effective power loss reduction in the auxiliary active switching power devices in the ARCS. In addition, this paper presents a DSP-based digitally-control space vector-modulated threephase voltage-fed inverter with high-frequency pulse-current transformer (HFPT) assisted ARCS, which can efficiently operate under a stable condition of a zero voltage soft-switching commutation. The steady-state operating circuit analysis of the new ARCS has the salient features and the practical design procedure of this resonant snubber are illustrated and discussed on the basis of simulation and experimental results. The operating performance of this soft-switching inverter using IGBT power modules and its evaluations in the steady-state are actually discussed as compared with the conventional three-phase voltagefed space vector modulated hard-switching inverter.

EPE-PEMC 2004 - Topic 02-1: Soft switching converters (resonant, ZVS, ZCS)
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 02: POWER ELECTRONICS CONVERTERS > EPE-PEMC 2004 - Topic 02-1: Soft switching converters (resonant, ZVS, ZCS)
	[return to parent folder]

	Choosing Parameters Of The Snubber With Partial Recuperation Of The Commutation Energy For Pwm Converters By G. V Bareghamyan(am), A. N. Melkonyan(de)	[View] [Download]
Abstract: This paper presents detailed analysis of switching transients in passive snubber with partial recuperation of commutation energy. Relationship between different boundary parameters, practical calculation example and component selection for optimal circuit design are presented. Transformerbased energy regenerative circuitry to recover the energy captured in the snubber capacitors is proposed.

	Comparison Among Different Topologies Of Dc-Dc Converter For Fuel-Cell-Based Inverter System By G. Gentile, S. Meo, F. Esposito	[View] [Download]
Abstract: In the paper a new zvs half-bridge current-fed dc-dc boost converter for fuel-cell based inverter system is presented and numerical results will be shown and discussed, compared with other topologies. Different combinations of current-fed dcdc and voltage-fed dc-dc converter for a fuel-cell system is analyzed. The results demonstrate that the suggested solution is a better choice regarding fast dynamic response and efficiency.

	Design Of High Efficiency, Low Noise Zvs-Cv Power Supply For Laser Diode Bars By Michal Widlok	[View] [Download]
Abstract: Design and analysis of high current, very low noise power supply for laser diode bars is presented. Special attention was made to reduce EMI (electromagnetic interference) and other generated noise and increase efficiency especially at lowload or no-load operation. Presented power supply is softswitched ZVS-CV (zero voltage switching – clamped voltage) type with special resonant components included and intelligent controller. Experimental results as well as electrical design guidelines are presented, and problem areas are outlined. The experimental power supply tested in the laboratory has 1.6kW output at 20V 80A, achieving 96% efficiency at full load and 18W losses at no load operation.

	Discrete Time Control Of Resonant Dual Channel Dc-Dc Converters By J. Hamar, I. Nagy, R. Barabas, O. Dranga, H. Funato, S. Ogasawara	[View] [Download]
Abstract: The paper presents a discrete time transient analysis of novel dual channel resonant dc-dc converters. Control algorithms are also proposed to produce the desired output voltage even in case of disturbances.

	EKF-Based Output Voltage Estimation Of 3rd Order Lcc Resonant Converters With Significant Load Variations By A. J. Gilbert, C. M. Bingham, B. S. Bhangu, M. P. Foster, D. A. Stone, D. Howe	[View] [Download]
Abstract: The discrete-time Extended Kalman Filter (EKF) is employed to eliminate the requirement for isolated output feedback sensors in 3rd-order LCC resonant power converters. Unlike previously reported methodologies, it is shown that the proposed formulation can accommodate output load variations and output short-circuit fault conditions.

	High Frequency Power Supply For Emission Control System Applied To Marine Diesel Engine By Sachio Kubota, Muneo Sato, Fumio Ito, Heinosuke Kakuage, Nobuo Ogawa, Yoshihiro Shimaoka	[View] [Download]
Abstract: This paper describes the diesel emission control system to reduce Particulate Matters (PM) in exhaust gas from marine diesel engine, and the power supply for this system. In this system, some advantages, such as excellent temperature control and maintenance free, are obtained by utilizing an induction heating. PWM (Pulse Width Modulation) inverter is proposed as power supply for this system, and the circuit characteristics are clarified by numerical analysis.

	High Power Factor With Minimum Kva Rating Design For Modified Series Parallel Resonant Converter By S. S. Tanavade, Mrs. M. A. Chaudhari, H. M. Suryawanshi, K. L. Thakre	[View] [Download]
Abstract: This paper presents systematic design of Modified Series-Parallel resonant converter (MSPRC) for its operation in high input line power factor mode with minimum total kVA rating of the reactive components. A step-by-step design procedure for high power factor operation and reduction of the stresses on the resonant components of the converter is given. PSPICE simulation results of a typical MSPRC are given to validate the analytical design procedure. Finally, results on a laboratory prototype are presented to substantiate the simulation results.

	Operation Of A Dual Channel Resonant Dc-Dc Buck Converter At Switching Frequencies Above The Resonant Frequency By Balazs Buti, Istvan Nagy	[View] [Download]
Abstract: The paper deals with a dual channel resonant DCDC Buck converter analyzing the high switching frequency region of its operation. In the converter the energy is transmitted through two channels from the input to the output using a switched capacitor. Due to the two channels its application is recommended in the medium or higher power ranges. An advantage of the converter is that in discontinuous current conduction mode (DCM) it can work in soft-switched mode too. A drawback of DCM operation is the higher output voltage ripple and the unfavourable utilization of the power transmission capabilities of its components compared to the continuous current conduction (CCM) operation. The main objective and the original contribution of the current paper are to present the conditions of the operation above the resonant frequency of its inherent ringing circuit, and to represent its beneficial effects. The considerations are verified by simulation results.

	Three-Phase Soft-Switching Inverter With High-Frequency Transformer-Assisted Auxiliary Resonant Snubber By Eiji Hiraki, Mutsuo Nakaoka, Shigeyuki Sugimoto, Shigeaki Ogawa	[View] [Download]
Abstract: In this paper, a prototype of the auxiliary resonant commutated snubber circuit (ARCS) incorporating a pulse-current feedback high-frequency transformer with power regeneration loop is described for three-phase inverter from a practical point of view. For three-phase voltage-fed soft-switching inverter, soft-switching active power filter and active PFC rectifier, the soft-switching inverter topology treated here has significant advantages of effective power loss reduction in the auxiliary active switching power devices in the ARCS. In addition, this paper presents a DSP-based digitally-control space vector-modulated threephase voltage-fed inverter with high-frequency pulse-current transformer (HFPT) assisted ARCS, which can efficiently operate under a stable condition of a zero voltage soft-switching commutation. The steady-state operating circuit analysis of the new ARCS has the salient features and the practical design procedure of this resonant snubber are illustrated and discussed on the basis of simulation and experimental results. The operating performance of this soft-switching inverter using IGBT power modules and its evaluations in the steady-state are actually discussed as compared with the conventional three-phase voltagefed space vector modulated hard-switching inverter.