EPE Association: EPE 2022 - DS3o: Real-Time Simulation and Hardware in the Loop

EPE 2022 - DS3o: Real-Time Simulation and Hardware in the Loop
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 07: Power Supplies > EPE 2022 - DS3o: Real-Time Simulation and Hardware in the Loop

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   An Accurate and Fast Model of Three-Level Three-Phase Dual-Active Bridge Converters in Real-Time Simulation
By Ming JIA [View]
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Abstract: This paper proposes a C-code average model for an efficient real-time simulation of a three-level three-phase dual-active bridge (DAB) dc-dc converter. To evaluate the model and the control algorithms, the simulations and control hardware-in-the-loop emulators are used, for example, testing a 5000 V dc-link DAB converter with up to 30-degree phase shift between the primary and secondary sides of a transformer. From the results of the hardware-in-the-loop test, it can be concluded that the model proposed in this work is numerically stable and is executed considerably faster than the state-of-the-art proposed auto-generated models.

   DAB converter discrete ADRC control into real-time CHIL simulation of a MVDC/LVDC power grid
By Alessandro VERONI [View]
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Abstract: Active Disturbance Rejection Control (ADRC) is implemented into commercial microcontroller to drive a Dual Active Bridge converter fed by a Medium Voltage Direct Current network. A real-time Control Hardware In the Loop system is successfully implemented and performance meets conventional off-line simulations results. ADRC proves to be a robust control strategy for a distribution network converters and Hardware In the Loop a valid technique for power electronics tests.

   Determination of optimal associated discrete circuit switch model parameters for real-time simulation of dual-active bridge converters
By Marija STEVIC [View]
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Abstract: Real-time simulation fidelity of Dual-Active Bridge (DAB) converters based on the Associated Discrete Circuit (ADC) switch model is analysed in this work. The ADC switch model allows for computationally efficient simulation, as it results in a fixed circuit topology, regardless of the switch states. The constant conductance parameter of the ADC switch model should be selected to minimize the virtual power losses and artificial oscillations introduced by the model, with the aim of achieving a high degree of simulation fidelity. However, a constant conductance parameter that minimizes virtual power losses may result in a low degree of simulation fidelity in terms of transformer current for DAB converters. To address this challenge, a Loss Compensation Algorithm (LCA) is utilized to minimize virtual power losses, while a method to determine a suitable ADC switch model conductance parameter that meets a maximum error constraint of the transformer current is derived analytically. Time-domain simulation results of the DAB converter are provided for validation of the proposed method.

   Unsymmetrical fault behavior of PLL based grid-connected converters
By Philipp HACKL [View]
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Abstract: The fault behavior of converters is essential for stable operation of converter-driven power grids. This paper introduces a stability criterion of unsymmetrical faults for phase-locked loop (PLL) based grid-connected converters. The focus lies on the stability of the PLL considering the grid conditions and the converter feed-in power during the fault. For this purpose, the approach is based on the phase portrait method where several situations are examined in theory. Finally, the stability criterion is validated with real-time system experiments.

EPE 2022 - DS3o: Real-Time Simulation and Hardware in the Loop
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 07: Power Supplies > EPE 2022 - DS3o: Real-Time Simulation and Hardware in the Loop
	[return to parent folder]

	An Accurate and Fast Model of Three-Level Three-Phase Dual-Active Bridge Converters in Real-Time Simulation By Ming JIA	[View] [Download]
Abstract: This paper proposes a C-code average model for an efficient real-time simulation of a three-level three-phase dual-active bridge (DAB) dc-dc converter. To evaluate the model and the control algorithms, the simulations and control hardware-in-the-loop emulators are used, for example, testing a 5000 V dc-link DAB converter with up to 30-degree phase shift between the primary and secondary sides of a transformer. From the results of the hardware-in-the-loop test, it can be concluded that the model proposed in this work is numerically stable and is executed considerably faster than the state-of-the-art proposed auto-generated models.

	DAB converter discrete ADRC control into real-time CHIL simulation of a MVDC/LVDC power grid By Alessandro VERONI	[View] [Download]
Abstract: Active Disturbance Rejection Control (ADRC) is implemented into commercial microcontroller to drive a Dual Active Bridge converter fed by a Medium Voltage Direct Current network. A real-time Control Hardware In the Loop system is successfully implemented and performance meets conventional off-line simulations results. ADRC proves to be a robust control strategy for a distribution network converters and Hardware In the Loop a valid technique for power electronics tests.

	Determination of optimal associated discrete circuit switch model parameters for real-time simulation of dual-active bridge converters By Marija STEVIC	[View] [Download]
Abstract: Real-time simulation fidelity of Dual-Active Bridge (DAB) converters based on the Associated Discrete Circuit (ADC) switch model is analysed in this work. The ADC switch model allows for computationally efficient simulation, as it results in a fixed circuit topology, regardless of the switch states. The constant conductance parameter of the ADC switch model should be selected to minimize the virtual power losses and artificial oscillations introduced by the model, with the aim of achieving a high degree of simulation fidelity. However, a constant conductance parameter that minimizes virtual power losses may result in a low degree of simulation fidelity in terms of transformer current for DAB converters. To address this challenge, a Loss Compensation Algorithm (LCA) is utilized to minimize virtual power losses, while a method to determine a suitable ADC switch model conductance parameter that meets a maximum error constraint of the transformer current is derived analytically. Time-domain simulation results of the DAB converter are provided for validation of the proposed method.

	Unsymmetrical fault behavior of PLL based grid-connected converters By Philipp HACKL	[View] [Download]
Abstract: The fault behavior of converters is essential for stable operation of converter-driven power grids. This paper introduces a stability criterion of unsymmetrical faults for phase-locked loop (PLL) based grid-connected converters. The focus lies on the stability of the PLL considering the grid conditions and the converter feed-in power during the fault. For this purpose, the approach is based on the phase portrait method where several situations are examined in theory. Finally, the stability criterion is validated with real-time system experiments.