EPE Association: EPE 2020 - DS3b-1: Converter Design and Optimization-1

EPE 2020 - DS3b-1: Converter Design and Optimization-1
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 02: Power Converter Topologies and Design > EPE 2020 - DS3b-1: Converter Design and Optimization-1

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   A bidirectional DAB-LLC DCX to Achieve Voltage Regulation and Wide ZVS Range Capability
By Yuefeng LIAO [View]
[Download]

Abstract: To achieve both voltage regulation and high efficiency in a DCX, a bidirectional DAB-LLC converteris studied. In this structure, most of power flows through LLC, and DAB is used to regulate the outputvoltage, which can achieve wide ZVS range capability in both forward and backward direction.

   A Novel Three-Phase PFC Diode Rectifier by LC Network Circuits for High Frequency Generator
By Shin-ichi MOTEGI [View]
[Download]

Abstract: This study deals with a three-phase diode rectifier for high frequency generator and it offers very fine PFC nature. The rectifier has three units of an L-C network circuit on the ac input side. Performance of the rectifier with most of all practically available combinations of inductance and capacitance of the L-C network circuit has been investigated through simulations. As a result, useful combinations of the constants to obtain desirable performance of the new rectifier are found. Referring to the simulation study, experimental setup was build and tested. The Total-Power-Factor of the input and Total-Harmonic-Distortion of input current of the experiments are 99\% and 5\%, respectively, at rated condition (4kW). It is shown in this paper that the new rectifier is practically advantageous than ordinary rectifier, e.g., three-phase bridge diode rectifier, and even well comparable to double three-phase bridge diode rectifier.

   Analysis and Design of High-Power Single-Stage Three-Phase Differential-Based Flyback Inverter for Photovoltaic Applications
By AHMED ALI [View]
[Download]

Abstract: This paper offers mathematical analysis, design, and experimental verification of three-phase differential-based flyback inverter (DBFI) based-on SiC-MOSFET for photovoltaic (PV) applications. The DBFI utilizes continuous modulation scheme (CMS) combined with the static linearization method (SLM), for low-order harmonics mitigation, based-on a simple and low-cost flyback converter. In addition, design investigations are detailed for the high-power isolated single stage inverter. Therefore, the paper reveals the design practical issues of the DBFI such as; power-stage design, HFT based Nano-Crystalline Core design, passive elements selection, and harmonics compensation strategy. The system is simulated by PSIM computer-aided simulator. Consequently, the 1.6 kW, 200 V, 50 kHz DBFI prototype has been experimentally validated with and without negative-sequence second-order harmonic component (NS-SOHC).

   Genetic Algorithm Based Multi Objective Optimization for Inductor Design
By Thorben SCHOBRE [View]
[Download]

Abstract: In this work an optimal design approach for inductors for buck or boost converters is presented. The optimizationroutineisbasedonNon-DominatedSortingGeneticAlgorithm(NSGA2)whichiswellsuited for such multi objective optimization applications with discrete design parameters. The optimization objectives are size and loss. Therefore an adequate loss model is established. The whole algorithm and the results are presented. To verify the models a test inductor is realized and characterized.

   How Good are the Design Tools in Power Electronics_
By Cyril BUTTAY [View]
[Download]

Abstract: A 100 kW, isolated dc-dc converter was built over the course of one year, starting from a blank page.This paper details the design and manufacturing process, and reflects in particular on the strengths andweaknesses of computer-based modelling and simulation tools.

   Zero-current switching with LC resonant tank circuit and capacitor isolation DC-DC converter
By OSAMU NAKASHIMA [View]
[Download]

Abstract: Insulated DC-DC switching power supplies have been using a magnetic coupling method using atransformer for several decades. Transformers have excellent properties as a material that can changethe voltage while insulating. On the other hand, it can be considered that there is a limit to thereduction in size and weight with increasing switching frequency. Therefore, we are interested in theinsulation type converter by the capacitor coupling. The principle of the capacitor insulation methodwas introduced in 1994, but it was pointed out that the problem of noise that occurs when the powerdevice is turned on and off. After that, a case where noise was suppressed by using a series resonantcircuit of a capacitor and an inductor was reported. However, it had no means to control the outputvoltage, and had the problem that fluctuations in the input voltage would directly cause fluctuations inthe output. Therefore, we maintain "resonance state" by providing "two sets of LC resonance tankcircuits corresponding to the resonance frequency" and changing the operating frequency for ONwidth pulse of fixed width (pulse frequency modulation or pulse density modulation). We propose thatthe output voltage can be controlled while. The voltage control characteristics are analyzed usingSpice Simulation, and the Co-relation with the experimental value is confirmed. By usingfrequency/density modulation, the inverter is always switched at the current zero crossing point,enabling Noiseless switching. Regarding the possibility, we will analyze the switching characteristicsdue to the deviation from the resonance point by using ADS; Electronic Design Automation tool, forthe noise that may occur in the actual PCB (circuit pattern), and show the results.

EPE 2020 - DS3b-1: Converter Design and Optimization-1
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 02: Power Converter Topologies and Design > EPE 2020 - DS3b-1: Converter Design and Optimization-1
	[return to parent folder]

	A bidirectional DAB-LLC DCX to Achieve Voltage Regulation and Wide ZVS Range Capability By Yuefeng LIAO	[View] [Download]
Abstract: To achieve both voltage regulation and high efficiency in a DCX, a bidirectional DAB-LLC converteris studied. In this structure, most of power flows through LLC, and DAB is used to regulate the outputvoltage, which can achieve wide ZVS range capability in both forward and backward direction.

	A Novel Three-Phase PFC Diode Rectifier by LC Network Circuits for High Frequency Generator By Shin-ichi MOTEGI	[View] [Download]
Abstract: This study deals with a three-phase diode rectifier for high frequency generator and it offers very fine PFC nature. The rectifier has three units of an L-C network circuit on the ac input side. Performance of the rectifier with most of all practically available combinations of inductance and capacitance of the L-C network circuit has been investigated through simulations. As a result, useful combinations of the constants to obtain desirable performance of the new rectifier are found. Referring to the simulation study, experimental setup was build and tested. The Total-Power-Factor of the input and Total-Harmonic-Distortion of input current of the experiments are 99\% and 5\%, respectively, at rated condition (4kW). It is shown in this paper that the new rectifier is practically advantageous than ordinary rectifier, e.g., three-phase bridge diode rectifier, and even well comparable to double three-phase bridge diode rectifier.

	Analysis and Design of High-Power Single-Stage Three-Phase Differential-Based Flyback Inverter for Photovoltaic Applications By AHMED ALI	[View] [Download]
Abstract: This paper offers mathematical analysis, design, and experimental verification of three-phase differential-based flyback inverter (DBFI) based-on SiC-MOSFET for photovoltaic (PV) applications. The DBFI utilizes continuous modulation scheme (CMS) combined with the static linearization method (SLM), for low-order harmonics mitigation, based-on a simple and low-cost flyback converter. In addition, design investigations are detailed for the high-power isolated single stage inverter. Therefore, the paper reveals the design practical issues of the DBFI such as; power-stage design, HFT based Nano-Crystalline Core design, passive elements selection, and harmonics compensation strategy. The system is simulated by PSIM computer-aided simulator. Consequently, the 1.6 kW, 200 V, 50 kHz DBFI prototype has been experimentally validated with and without negative-sequence second-order harmonic component (NS-SOHC).

	Genetic Algorithm Based Multi Objective Optimization for Inductor Design By Thorben SCHOBRE	[View] [Download]
Abstract: In this work an optimal design approach for inductors for buck or boost converters is presented. The optimizationroutineisbasedonNon-DominatedSortingGeneticAlgorithm(NSGA2)whichiswellsuited for such multi objective optimization applications with discrete design parameters. The optimization objectives are size and loss. Therefore an adequate loss model is established. The whole algorithm and the results are presented. To verify the models a test inductor is realized and characterized.

	How Good are the Design Tools in Power Electronics_ By Cyril BUTTAY	[View] [Download]
Abstract: A 100 kW, isolated dc-dc converter was built over the course of one year, starting from a blank page.This paper details the design and manufacturing process, and reflects in particular on the strengths andweaknesses of computer-based modelling and simulation tools.

	Zero-current switching with LC resonant tank circuit and capacitor isolation DC-DC converter By OSAMU NAKASHIMA	[View] [Download]
Abstract: Insulated DC-DC switching power supplies have been using a magnetic coupling method using atransformer for several decades. Transformers have excellent properties as a material that can changethe voltage while insulating. On the other hand, it can be considered that there is a limit to thereduction in size and weight with increasing switching frequency. Therefore, we are interested in theinsulation type converter by the capacitor coupling. The principle of the capacitor insulation methodwas introduced in 1994, but it was pointed out that the problem of noise that occurs when the powerdevice is turned on and off. After that, a case where noise was suppressed by using a series resonantcircuit of a capacitor and an inductor was reported. However, it had no means to control the outputvoltage, and had the problem that fluctuations in the input voltage would directly cause fluctuations inthe output. Therefore, we maintain "resonance state" by providing "two sets of LC resonance tankcircuits corresponding to the resonance frequency" and changing the operating frequency for ONwidth pulse of fixed width (pulse frequency modulation or pulse density modulation). We propose thatthe output voltage can be controlled while. The voltage control characteristics are analyzed usingSpice Simulation, and the Co-relation with the experimental value is confirmed. By usingfrequency/density modulation, the inverter is always switched at the current zero crossing point,enabling Noiseless switching. Regarding the possibility, we will analyze the switching characteristicsdue to the deviation from the resonance point by using ADS; Electronic Design Automation tool, forthe noise that may occur in the actual PCB (circuit pattern), and show the results.