EPE Association: EPE 2023 - LS6b: Converter Modelling and Low-level Control, including Gate-Drives

EPE 2023 - LS6b: Converter Modelling and Low-level Control, including Gate-Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 03: Measurement and Control > EPE 2023 - LS6b: Converter Modelling and Low-level Control, including Gate-Drives

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   Analytical Estimation of Parasitic Ringing Overvoltage in Fast Switching Half-Bridges
By Philipp CZERWENKA, Jannik MAIER, Tobias WOLFER, Gernot SCHULLERUS, Eckhard HENNIG [View]
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Abstract: Modern wide bandgap power devices promise higher power conversion performance if the device can be operated reliably. As switching speed increases, the effects of parasitic ringing become more prominent, causing potentially damaging overvoltages during device turn-off. Estimating the expected additional voltage caused by such ringing enables more reliable designs. In this paper, we present an analytical expression to calculate the expected overvoltage caused by parasitic ringing based on parasitic element values and operating point parameters. Simulations and measurements confirm that the expression can be used to find the smallest rise time of the switches' drain-source voltage for minimum overvoltage. The given expression also allows the prediction of the trade off overvoltage amplitude in case of faster required rise times.

   Modeling and Analysis of High Gain Pole Point Inductor-based Series Resonant Dual Active Bridge Converter
By Nitheesh RAJENDRAN, Ashwini Kumar DUBEY, Lakshminarasamma N, Arun KARUPPASWAMY B [View]
[Download]

Abstract: Energy storage systems consisting of fuel cells, batteries, and super-capacitors are used to support the grid during peak loading conditions. This is achieved with the help of bidirectional DC-DC converters with boosting capability. This paper proposes a new single-stage isolated bidirectional DC-DC converter derived from the base topology of a Series Resonant Dual Active Bridge (SRDAB) called Pole Point Inductor-based SRDAB (PPI-SRDAB). It consists of a current fed boost full bridge (BFB) on the primary side and a full bridge (FB) on the secondary side. The voltage conversion ratio of PPI-SRDAB is twice when compared to SRDAB. The proposed converter is modeled using the generalized averaging method to study the dynamics of the converter. The steady-state model and small-signal model are derived, and the accuracy of the derived model is verified using MATLAB and PLECS simulations. The studies are performed on an 80 V input and 800 V output converter to demonstrate the accuracy of the proposed model. Alongside this, an experimental setup of PPI-SRDAB is populated and is verified experimentally for a high voltage gain of 10 for validating the boosting operation of the topology.

   Variable switching frequency and duty cycle control strategy for the Single Active Bridge
By Alexis A. GÓMEZ, Alberto RODRÍGUEZ, Marta M. HERNANDO, Aitor VÁZQUEZ, Joan GILES, Javier SEBASTIÁN [View]
[Download]

Abstract: A new control scheme, based on variable switching frequency and duty cycle, is introduced for the Single Active Bridge converter. A static analysis is realized and a design procedure is proposed. The resulting designs are compared with previously proposed control strategies by means of simulation.

EPE 2023 - LS6b: Converter Modelling and Low-level Control, including Gate-Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 03: Measurement and Control > EPE 2023 - LS6b: Converter Modelling and Low-level Control, including Gate-Drives
	[return to parent folder]

	Analytical Estimation of Parasitic Ringing Overvoltage in Fast Switching Half-Bridges By Philipp CZERWENKA, Jannik MAIER, Tobias WOLFER, Gernot SCHULLERUS, Eckhard HENNIG	[View] [Download]
Abstract: Modern wide bandgap power devices promise higher power conversion performance if the device can be operated reliably. As switching speed increases, the effects of parasitic ringing become more prominent, causing potentially damaging overvoltages during device turn-off. Estimating the expected additional voltage caused by such ringing enables more reliable designs. In this paper, we present an analytical expression to calculate the expected overvoltage caused by parasitic ringing based on parasitic element values and operating point parameters. Simulations and measurements confirm that the expression can be used to find the smallest rise time of the switches' drain-source voltage for minimum overvoltage. The given expression also allows the prediction of the trade off overvoltage amplitude in case of faster required rise times.

	Modeling and Analysis of High Gain Pole Point Inductor-based Series Resonant Dual Active Bridge Converter By Nitheesh RAJENDRAN, Ashwini Kumar DUBEY, Lakshminarasamma N, Arun KARUPPASWAMY B	[View] [Download]
Abstract: Energy storage systems consisting of fuel cells, batteries, and super-capacitors are used to support the grid during peak loading conditions. This is achieved with the help of bidirectional DC-DC converters with boosting capability. This paper proposes a new single-stage isolated bidirectional DC-DC converter derived from the base topology of a Series Resonant Dual Active Bridge (SRDAB) called Pole Point Inductor-based SRDAB (PPI-SRDAB). It consists of a current fed boost full bridge (BFB) on the primary side and a full bridge (FB) on the secondary side. The voltage conversion ratio of PPI-SRDAB is twice when compared to SRDAB. The proposed converter is modeled using the generalized averaging method to study the dynamics of the converter. The steady-state model and small-signal model are derived, and the accuracy of the derived model is verified using MATLAB and PLECS simulations. The studies are performed on an 80 V input and 800 V output converter to demonstrate the accuracy of the proposed model. Alongside this, an experimental setup of PPI-SRDAB is populated and is verified experimentally for a high voltage gain of 10 for validating the boosting operation of the topology.

	Variable switching frequency and duty cycle control strategy for the Single Active Bridge By Alexis A. GÓMEZ, Alberto RODRÍGUEZ, Marta M. HERNANDO, Aitor VÁZQUEZ, Joan GILES, Javier SEBASTIÁN	[View] [Download]
Abstract: A new control scheme, based on variable switching frequency and duty cycle, is introduced for the Single Active Bridge converter. A static analysis is realized and a design procedure is proposed. The resulting designs are compared with previously proposed control strategies by means of simulation.