EPE Association: EPE 2016 - LS4a: Modelling, Control and Optimization

EPE 2016 - LS4a: Modelling, Control and Optimization
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2016 ECCE Europe - Conference > EPE 2016 - Topic 02: Power Converter Topologies and Design > EPE 2016 - LS4a: Modelling, Control and Optimization

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   AC Small Signal Modeling of PWM Y-Source Converter by Circuit Averaging and Averaged Switch Modeling Technique
By Mojtaba FOROUZESH [View]
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Abstract: Magnetically coupled Y-source impedance network is a newly proposed structure with versatile features intended for various power converter applications e.g. in the renewable energy technologies. The voltage gain of the Y-source impedance network rises exponentially as a function of turns ratio, which is inherited from a special coupled inductor with three windings. Due to the importance of modeling in the converter design procedure, this paper is dedicated to dc and ac small signal modelling of the PWM Y-source converter. The derived transfer functions are presented in detail and have been verified through simulation and experimental results.

   Continuous Control Set Space Vector Modulation for the 3x3 Direct Matrix Converter
By Henk HUISMAN [View]
[Download]

Abstract: In this paper, a new method for Space Vector Modulation (SVM) for the 3x3 direct matrix converter is proposed. This method is based on a combination of Model Predictive Control (MPC) and SVM, also denoted as Continuous Control Set MPC. The proposed method uses all available vectors, and allows the converter to produce waveforms of high quality at both power ports, also when subjected to unbalanced or distorted waveforms. The mathematical derivation of the proposed method is explained, and the operation illustrated by means of simulation experiments in open loop. The paper finishes with conclusions and prospects for further development and application of the method.

   Power Loss Analysis of Multi-Phase and Modular Interleaved Boost DC-DC Converters with Coupled Inductor for Electric Vehicles
By Freddy VELANDIA [View]
[Download]

Abstract: Efficiency is one of the most important aspects to consider in the design of electric systems for mobility applications. In this study, the interface between the storage system and the inverter is considered. This interface is a step-up DC-DC converter aimed to boost the energy storage voltage to the inverter voltage. This paper introduces the analysis, design, and comparison of four topologies of the interleaved boost DC-DC converter evaluating the effect of magnetic coupling in multi-phase and modular circuits. Additionally, a novel idea of a four-phase coupled inductor is presented. These power DC-DC converters are designed in order to find the suitable arrangement with the best efficiency.

   Reverse-Recovery Current Reduction in a ZCS Boost Converter with Saturable Inductors using Nanocrystalline Core Materials
By Wilmar MARTINEZ [View]
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Abstract: Electric Vehicles demand high efficiency power converter in their powertrains in order to use the energy of the storage unit in a better way. Specifically, the power converters, that interface the storage unit with the motors, are usually composed of high-losses components. Moreover, the topologies used in these systems present conditions of hard switching and reverse recovery phenomena that reduce the total efficiency in the vehicle. This work analyzes the recovery-less boost converter that can achieve Zero-Current Switching, reverse-recovery reduction and softening of the switching transition. Due to the technique of using two saturable inductors. In addition, the use of next-generation magnetic materials for increasing the efficiency and reducing the reverse recovery current is studied. In this paper, the circuit configuration, the operating principle and the reverse-recovery reduction of the recovery-less converter is reviewed. Moreover, the comparison of ferrites and nanocrystalline soft magnetic materials is presented. Finally, the effectiveness of the proposed comparison is validated by experimental tests. As a result, reduction of the peak recovery current and increase of the efficiency are confirmed, achieving a 71\% of reduction of the recovery current and 0.25\% of efficiency increase at 1kW of output power.

EPE 2016 - LS4a: Modelling, Control and Optimization
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2016 ECCE Europe - Conference > EPE 2016 - Topic 02: Power Converter Topologies and Design > EPE 2016 - LS4a: Modelling, Control and Optimization
	[return to parent folder]

	AC Small Signal Modeling of PWM Y-Source Converter by Circuit Averaging and Averaged Switch Modeling Technique By Mojtaba FOROUZESH	[View] [Download]
Abstract: Magnetically coupled Y-source impedance network is a newly proposed structure with versatile features intended for various power converter applications e.g. in the renewable energy technologies. The voltage gain of the Y-source impedance network rises exponentially as a function of turns ratio, which is inherited from a special coupled inductor with three windings. Due to the importance of modeling in the converter design procedure, this paper is dedicated to dc and ac small signal modelling of the PWM Y-source converter. The derived transfer functions are presented in detail and have been verified through simulation and experimental results.

	Continuous Control Set Space Vector Modulation for the 3x3 Direct Matrix Converter By Henk HUISMAN	[View] [Download]
Abstract: In this paper, a new method for Space Vector Modulation (SVM) for the 3x3 direct matrix converter is proposed. This method is based on a combination of Model Predictive Control (MPC) and SVM, also denoted as Continuous Control Set MPC. The proposed method uses all available vectors, and allows the converter to produce waveforms of high quality at both power ports, also when subjected to unbalanced or distorted waveforms. The mathematical derivation of the proposed method is explained, and the operation illustrated by means of simulation experiments in open loop. The paper finishes with conclusions and prospects for further development and application of the method.

	Power Loss Analysis of Multi-Phase and Modular Interleaved Boost DC-DC Converters with Coupled Inductor for Electric Vehicles By Freddy VELANDIA	[View] [Download]
Abstract: Efficiency is one of the most important aspects to consider in the design of electric systems for mobility applications. In this study, the interface between the storage system and the inverter is considered. This interface is a step-up DC-DC converter aimed to boost the energy storage voltage to the inverter voltage. This paper introduces the analysis, design, and comparison of four topologies of the interleaved boost DC-DC converter evaluating the effect of magnetic coupling in multi-phase and modular circuits. Additionally, a novel idea of a four-phase coupled inductor is presented. These power DC-DC converters are designed in order to find the suitable arrangement with the best efficiency.

	Reverse-Recovery Current Reduction in a ZCS Boost Converter with Saturable Inductors using Nanocrystalline Core Materials By Wilmar MARTINEZ	[View] [Download]
Abstract: Electric Vehicles demand high efficiency power converter in their powertrains in order to use the energy of the storage unit in a better way. Specifically, the power converters, that interface the storage unit with the motors, are usually composed of high-losses components. Moreover, the topologies used in these systems present conditions of hard switching and reverse recovery phenomena that reduce the total efficiency in the vehicle. This work analyzes the recovery-less boost converter that can achieve Zero-Current Switching, reverse-recovery reduction and softening of the switching transition. Due to the technique of using two saturable inductors. In addition, the use of next-generation magnetic materials for increasing the efficiency and reducing the reverse recovery current is studied. In this paper, the circuit configuration, the operating principle and the reverse-recovery reduction of the recovery-less converter is reviewed. Moreover, the comparison of ferrites and nanocrystalline soft magnetic materials is presented. Finally, the effectiveness of the proposed comparison is validated by experimental tests. As a result, reduction of the peak recovery current and increase of the efficiency are confirmed, achieving a 71\% of reduction of the recovery current and 0.25\% of efficiency increase at 1kW of output power.