Next Article in Journal
Open Source Modelling and Simulation of the Nordic Hydro Power System
Next Article in Special Issue
Elevator Regenerative Energy Applications with Ultracapacitor and Battery Energy Storage Systems in Complex Buildings
Previous Article in Journal
A Switched Reluctance Motor Drive Controller Based on an FPGA Device with a Complex PID Regulator
 
 
Article

Hybrid Output Voltage Modulation (PWM-FSHE) for a Modular Battery System Based on a Cascaded H-Bridge Inverter for Electric Vehicles Reducing Drivetrain Losses and Current Ripple †

1
Department of Electrical Engineering, Chalmers University of Technology, Hörsalsvägen 11, 41258 Gothenburg, Sweden
2
Department of Electrical Engineering, Bundeswehr University Munich, Werner-Heisenberg-Weg 39, 85579 Neubiberg, Germany
*
Author to whom correspondence should be addressed.
This article is a post conference article of the paper (Output Voltage Synthesis of a Modular Battery System based on a Cascaded H-Bridge Multilevel Inverter Topology for Vehicle Propulsion: Multilevel Pulse Width Modulation vs. Fundamental Selective Harmonic Elimination. In Proceedings of the 2020 IEEE Transportation Electrification Conference Expo (ITEC), Chicago, IL, USA, 23–26 June 2020), published at the IEEE ITEC 2020, Chicago, USA.
Academic Editor: Anastasios Dounis
Energies 2021, 14(5), 1424; https://doi.org/10.3390/en14051424
Received: 25 January 2021 / Revised: 13 February 2021 / Accepted: 22 February 2021 / Published: 5 March 2021
(This article belongs to the Special Issue Building Automation and Special Electrical Systems)
This paper shows a preliminary study about the output voltage modulation of a modular battery system based on a seven-level cascaded H-bridge inverter used for vehicle propulsion. Two generally known modulation techniques, pulse width modulation (PWM) and fundamental selective harmonic elimination (FSHE), are extensively compared for such an innovative modular battery system inverter considering EVs’ broad torque-speed range. The inverter and the battery losses, as well as the inverter-induced current THD, are modeled and quantified using simulations. At low speeds, if the modulation index M is below 0.3, FSHE induces a high current THD (>>5%) and, thus, cannot be used. At medium speeds, FSHE reduces the drivetrain losses (including the battery losses), while operating at higher speeds, it even reduces the current THD. Thus, an individual boundary between multilevel PWM and FSHE can be determined using weightings for efficiency and current quality. Based on this, a simple hybrid modulation technique is suggested for modular battery system inverters, improving the simulated drive cycle efficiency by a maximum of 0.29% to 0.42% for a modeled small passenger vehicle. Furthermore, FSHE’s high speed dominance is demonstrated using a simple experimental setup with an inductive load. View Full-Text
Keywords: batteries; battery management systems; energy efficiency; modular multilevel systems; pulse width modulation; torque; total harmonic distortion batteries; battery management systems; energy efficiency; modular multilevel systems; pulse width modulation; torque; total harmonic distortion
Show Figures

Figure 1

MDPI and ACS Style

Kersten, A.; Kuder, M.; Thiringer, T. Hybrid Output Voltage Modulation (PWM-FSHE) for a Modular Battery System Based on a Cascaded H-Bridge Inverter for Electric Vehicles Reducing Drivetrain Losses and Current Ripple. Energies 2021, 14, 1424. https://doi.org/10.3390/en14051424

AMA Style

Kersten A, Kuder M, Thiringer T. Hybrid Output Voltage Modulation (PWM-FSHE) for a Modular Battery System Based on a Cascaded H-Bridge Inverter for Electric Vehicles Reducing Drivetrain Losses and Current Ripple. Energies. 2021; 14(5):1424. https://doi.org/10.3390/en14051424

Chicago/Turabian Style

Kersten, Anton, Manuel Kuder, and Torbjörn Thiringer. 2021. "Hybrid Output Voltage Modulation (PWM-FSHE) for a Modular Battery System Based on a Cascaded H-Bridge Inverter for Electric Vehicles Reducing Drivetrain Losses and Current Ripple" Energies 14, no. 5: 1424. https://doi.org/10.3390/en14051424

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop