EPE Association: EPE 2020 - LS3d: Drives and Energy Storage

EPE 2020 - LS3d: Drives and Energy Storage
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2020 - LS3d: Drives and Energy Storage

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   Impedance Analysis of an Automotive DC Bus
By Michael SCHLUETER [View]
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Abstract: This paper analyses the impact of the fundamental frequency, the switching frequency and the dead-time on the DC current and DC voltage spectrum of a traction inverter connected to the high voltage (HV) DC bus of an electric vehicle (EV). A method is presented to calculate the DC bus impedance using the perturbations generated by the inverter. This method is verified by simulations and meas-urements based on a test setup and then used to calculate the Thevenin's impedance at the terminals of the traction inverter in an EV.

   New energy management algorithm based on filtering for electrical losses minimization in Battery-Ultracapacitor electric vehicles
By BAKOU TRAORE [View]
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Abstract: This paper presents a new energy management algorithm based on filtering for battery-ultracapacitor electric vehicles. Compared to the passive filtering techniques, the developed strategy allows a best control of the ultracapacitor state of charge and achieves an optimization of the system electric losses. This is achieved by an online optimization of a cost function. Simulations validate the performances of the proposed method.

   Simulation and measurement-based analysis of efficiency improvement of SiC MOSFETs in a series-production ready 300 kW / 400V automotive traction inverter
By Alexander PAWELLEK [View]
[Download]

Abstract: As experienced for most power electronic applications in the past, efficiency is also becoming one of the key characteristic for automotive applications, affecting the design of future high-voltage components for electric vehicles. In case of traction inverters, mainly semiconductor losses deteriorate system efficiency and thus, upgrading the switches in hard-switched PWM-controlled 2-level inverters is a direct measure to significantly reduce system losses. For this task, SiC MOSFETs are a promising class of power semiconductors with superior device charac-teristics. With SiC high power modules becoming available on a broader basis, proper design-in approaches are necessary in order to obtain robust and cost-effective system solutions. Address-ing this topic, a new full-SiC power module suited for direct replacement of existing Si-based solutions is described in this paper. A simulation and measurement-based analysis of the effi-ciency benefits of such a retrofit solution for a 400 V based drivetrain with up to 300 kW of output power is presented. Simulation results predict a loss reduction on inverter level of around 50 \% compared to the Si IGBT based solution with respect to steady-state part load operation. The simulation results are verified by drivetrain test bench measurements showing a very high accuracy of the simulation model. Drive cycle simulations indicate an advantage in terms of energy consumption of up to 6.6 \% for the drivetrain equipped with SiC MOSFETs over its counterpart equipped with Si IGBTs.

   Six-Phase PMSM Drive Inverter Testing on a High Performance Power Hardware-in-the-Loop Testbed
By Yasser RAHMOUN [View]
[Download]

Abstract: This paper presents for the first time a six-phase Power Hardware-In-the-Loop (PHIL) testbench, featuringelectromagnetic effects such as magnetic coupling and spatial harmonics. The proposed PHIL testbedcan be used for testing six-phase Permanent Magnet Synchronous Machine (PMSM) drive invertersfor electric vehicles under realistic operation conditions. This paper describes the developed six-phasePMSMmodel and its parameterization, aswell as the structure of the PHIL testbed. Finally, measurementsand simulation results are compared and illustrated.

EPE 2020 - LS3d: Drives and Energy Storage
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2020 - LS3d: Drives and Energy Storage
	[return to parent folder]

	Impedance Analysis of an Automotive DC Bus By Michael SCHLUETER	[View] [Download]
Abstract: This paper analyses the impact of the fundamental frequency, the switching frequency and the dead-time on the DC current and DC voltage spectrum of a traction inverter connected to the high voltage (HV) DC bus of an electric vehicle (EV). A method is presented to calculate the DC bus impedance using the perturbations generated by the inverter. This method is verified by simulations and meas-urements based on a test setup and then used to calculate the Thevenin's impedance at the terminals of the traction inverter in an EV.

	New energy management algorithm based on filtering for electrical losses minimization in Battery-Ultracapacitor electric vehicles By BAKOU TRAORE	[View] [Download]
Abstract: This paper presents a new energy management algorithm based on filtering for battery-ultracapacitor electric vehicles. Compared to the passive filtering techniques, the developed strategy allows a best control of the ultracapacitor state of charge and achieves an optimization of the system electric losses. This is achieved by an online optimization of a cost function. Simulations validate the performances of the proposed method.

	Simulation and measurement-based analysis of efficiency improvement of SiC MOSFETs in a series-production ready 300 kW / 400V automotive traction inverter By Alexander PAWELLEK	[View] [Download]
Abstract: As experienced for most power electronic applications in the past, efficiency is also becoming one of the key characteristic for automotive applications, affecting the design of future high-voltage components for electric vehicles. In case of traction inverters, mainly semiconductor losses deteriorate system efficiency and thus, upgrading the switches in hard-switched PWM-controlled 2-level inverters is a direct measure to significantly reduce system losses. For this task, SiC MOSFETs are a promising class of power semiconductors with superior device charac-teristics. With SiC high power modules becoming available on a broader basis, proper design-in approaches are necessary in order to obtain robust and cost-effective system solutions. Address-ing this topic, a new full-SiC power module suited for direct replacement of existing Si-based solutions is described in this paper. A simulation and measurement-based analysis of the effi-ciency benefits of such a retrofit solution for a 400 V based drivetrain with up to 300 kW of output power is presented. Simulation results predict a loss reduction on inverter level of around 50 \% compared to the Si IGBT based solution with respect to steady-state part load operation. The simulation results are verified by drivetrain test bench measurements showing a very high accuracy of the simulation model. Drive cycle simulations indicate an advantage in terms of energy consumption of up to 6.6 \% for the drivetrain equipped with SiC MOSFETs over its counterpart equipped with Si IGBTs.

	Six-Phase PMSM Drive Inverter Testing on a High Performance Power Hardware-in-the-Loop Testbed By Yasser RAHMOUN	[View] [Download]
Abstract: This paper presents for the first time a six-phase Power Hardware-In-the-Loop (PHIL) testbench, featuringelectromagnetic effects such as magnetic coupling and spatial harmonics. The proposed PHIL testbedcan be used for testing six-phase Permanent Magnet Synchronous Machine (PMSM) drive invertersfor electric vehicles under realistic operation conditions. This paper describes the developed six-phasePMSMmodel and its parameterization, aswell as the structure of the PHIL testbed. Finally, measurementsand simulation results are compared and illustrated.