Estimation of switching losses in resonant converters based on datasheet information

Oeder, Christian; Barwig, Markus; Duerbaum, Thomas

doi:10.1109/epe.2016.7695275

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…Power losses in the circuit must be considered to accurately represent similar results between simulation and experimental tests. In the literature, some authors have focused on estimating power losses in the switching process of the metal-oxide-semiconductor field-effect transistor (MOSFET) [12]. In addition, the power losses in the core of an inductor in a PWM converter are estimated [13].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Quasi-Sliding Mode Control with Loss Estimation Applied to DC–DC Power Converters

2019

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This paper presents the experimental implementation of a buck converter with quasi-sliding mode control combined with a loss estimator function. An online loss estimator is developed to estimate, in real time, the parasitic resistances of the converter and variations of the resistance in the load. The estimated loss resistance and the resistance of the load are embedded, in real time, into the model equations of the controller using Zero Average Dynamics and Fixed Point Induction Control techniques (ZAD-FPIC) to improve the control robustness to resistive parameter variations. Details of the experimental setup are presented to show developed electrical and electronic circuits, and experimental techniques are described to ensure the successful digital implementation of closed-loop control of the buck power converter. The proper shielding of electrical wiring in power electronics allows improvement to the quality of the measures by removing noise induced by electromagnetic interference. A trigger signal is used to implement the Pulse-Width Modulation (PWM) with centered pulse and to synchronize the sampling of analogical signals from the buck converter. Such synchronization allows the use of a lower sampling frequency and ensures the measurements at the right instant in time. Experimental results are in good agreement with numerical simulations, showing the effectiveness of the control approach.

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Section: Introductionmentioning

confidence: 99%

Model-Based Quasi-Sliding Mode Control with Loss Estimation Applied to DC–DC Power Converters

2019

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“…Therefore, the losses (Equation ( 6)) are lower in such a case, and can even be zero (in idealized analysis). The detailed analysis of C oss -related energies and losses in HB can found in [29,30]. The MRSCC converter consists of n number of HBs composed with two various types of switches, resulting from their current stresses described by Equations ( 3) and (4).…”

Section: Oss Losses and Its Reduction By Application Of The Commutati...mentioning

confidence: 99%

SiC-Based Bidirectional Multilevel High-Voltage Gain Switched-Capacitor Resonant Converter with Improved Efficiency

Kawa

Stala

2020

Energies

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This paper presents the research results of the bidirectional multilevel resonant switched capacitor converter (MRSCC). The converter can achieve a high voltage ratio in multilevel topology, which limits the voltage stress on switches and is able to operate with high power efficiency. The converter can be applied as an interconnector between DC voltage systems used for various applications. This paper presents a method that significantly improves the efficiency of the MSRCC through topology modification. Furthermore, the feasibility of the converter was demonstrated with the use of SiC and Si MOSFET switches, together with suitable passive components. It was demonstrated that the proposed modification of the topology makes the converter very efficient in SiC-based ones and can significantly improve the efficiency of Si MOSFET converters. The series of test results of the SiC-based converter is a novel aspect presented in this paper and shows promising achievements of efficiency. The results were obtained from the laboratory setup of 5 kW and 0.5/2 kV MRSCC. To demonstrate the bidirectional operation of the converter, a back-to-back setup (0.5/2/0.5 kV) was used. It also demonstrates that such a high-voltage gain converter can be accurately tested with the use of laboratory equipment with a typical voltage range.

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“…6c) shows that COSS starts being discharged/charged in LS/HS. It is worth to remark that, differently from ESW, the driving energy loss (EDR) is practically independent of tD (less than 15% shift) [7].…”

Section: B Analysis Of Zvs and Non-zvs Operationmentioning

confidence: 99%

“…Despite some initial works neglected ESW [1,2], more up-to-date investigations point out to an increasing ESW predominance in modern softswitching converters [3,4]. From a modelling perspective, many efforts have been done to include non-linear capacitance effects [5,6] and non-ZVS operation [7] in SPICE models. However, none of these models include the most recent discoveries in output capacitance (COSS) hysteresis for Silicon SuperJunction (SJ) MOSFETs [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

High-accuracy modelling of ZVS energy loss in advanced power transistors

Roig

Gomez

Bauwens

et al. 2018

2018 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Two simulation approaches for prediction of energy loss in high-voltage power transistors (~600V) operating under ZVS (Zero-Voltage-Switching) and near-ZVS conditions are presented and proved by experiment in this work. The first approach is based on finite-element simulation whereas the second one proposes a new SPICE model. Different from prior works, both models feature COSS hysteresis and related energy loss, thus showing high precision in replicating waveforms and energy loss for real tests in the primary-side of LLC resonant converters. I.

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Estimation of switching losses in resonant converters based on datasheet information

Cited by 13 publications

References 6 publications

Model-Based Quasi-Sliding Mode Control with Loss Estimation Applied to DC–DC Power Converters

Model-Based Quasi-Sliding Mode Control with Loss Estimation Applied to DC–DC Power Converters

SiC-Based Bidirectional Multilevel High-Voltage Gain Switched-Capacitor Resonant Converter with Improved Efficiency

High-accuracy modelling of ZVS energy loss in advanced power transistors

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