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Modeling the Dynamics of a Multilevel Inverter During Transient Operation in Electric Vehicle Applications
In this thesis, you will model the dynamic behaviour of the multilevel inverter to be used for an electric vehicle application. You will study the losses in semiconductor switches during transient operation and capacitor voltage dynamics of multilevel inverters.
Keywords: Power electronics, Inverter, Space Vector, Electric Vehicle, High voltage, Multilevel, Semiconductor, GaN, Transient Operation, Dynamics, Modeling, MATLAB, Simulink
Multilevel inverters are increasingly considered for propulsion systems of
electric vehicles with high-voltage batteries due to their lower harmonic
current ripple, reduced dv/dt stress on the insulation system, and the ability
to use relatively low-voltage semiconductor switches. However, these
benefits come with added complexities, such as unequal loss distribution
among the switches and the need to balance, for example, flying capacitors
highlighted in the figure. These challenges can be further aggravated
during transient operation of the propulsion system.
At HPE, for example, 4-level inverter topologies based on GaN HEMTs
for electric vehicle applications are investigated. In this project, you will
model a 4-level inverter topology in MATLAB/Simulink and analyze the
loss distribution and capacitor balancing dynamics of the inverter during
transient operation of the electric propulsion system. Additionally, you
will investigate methods to balance the flying capacitors during transient
operation.
Multilevel inverters are increasingly considered for propulsion systems of electric vehicles with high-voltage batteries due to their lower harmonic current ripple, reduced dv/dt stress on the insulation system, and the ability to use relatively low-voltage semiconductor switches. However, these benefits come with added complexities, such as unequal loss distribution among the switches and the need to balance, for example, flying capacitors highlighted in the figure. These challenges can be further aggravated during transient operation of the propulsion system. At HPE, for example, 4-level inverter topologies based on GaN HEMTs for electric vehicle applications are investigated. In this project, you will model a 4-level inverter topology in MATLAB/Simulink and analyze the loss distribution and capacitor balancing dynamics of the inverter during transient operation of the electric propulsion system. Additionally, you will investigate methods to balance the flying capacitors during transient operation.
MLI_Transient_Operation.pdf
