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**Harvard**

Wang, Q. (2015) *Investigation and Implementation of MOSFETs Losses Equations in a Three-phase Inverter*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Wang2015,

author={Wang, Que},

title={Investigation and Implementation of MOSFETs Losses Equations in a Three-phase Inverter},

abstract={In this master thesis, the operation model of a three-phase MOSFET inverter and
the corresponding current waveforms are analyzed. The mathematical expressions
of the conduction losses based on the three-phase MOSFET inverter using PWM
control method are presented. The algebraic equations are given with the parameters
of a MOSFET-diode module, such as the on-state resistance, the body diode
resistance and the voltage drop. Moreover, a numerical reference representation of
the conduction losses is made to verify the analytical expressions.
Numerical analysis is firstly based on the pure sinusoidal reference three-phase voltages.
The results of the numerical analysis and the results of the analytical equations
are coherent. A comparison of the MOSFET inverter with reverse conduction characteristics
and the assumption without reverse conduction is made. Without reverse
conduction, the losses of one power module are higher than the one with reverse conduction
at both the high and low current levels. The difference can be more than 20
% compared to the case with reverse condition at the rated current of the selected
module, CAS300M12BM2, 150 A. When the phase current is low and there is no
diode conducting during the operation, the losses without reverse conduction can
be more than 100 % higher. Furthermore, the losses resulting from third harmonic
injection and using the common mode reduction are calculated, and compared with
the losses using a pure sinusoidal reference. The conduction losses of those two
different PWM methods are found to be small and presented in tables.},

publisher={Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola},

place={Göteborg},

year={2015},

keywords={Power electronics, MOSFET, Power losses, Conduction losses, Reverse conduction, PWM, MATLAB},

note={54},

}

** RefWorks **

RT Generic

SR Electronic

ID 232013

A1 Wang, Que

T1 Investigation and Implementation of MOSFETs Losses Equations in a Three-phase Inverter

YR 2015

AB In this master thesis, the operation model of a three-phase MOSFET inverter and
the corresponding current waveforms are analyzed. The mathematical expressions
of the conduction losses based on the three-phase MOSFET inverter using PWM
control method are presented. The algebraic equations are given with the parameters
of a MOSFET-diode module, such as the on-state resistance, the body diode
resistance and the voltage drop. Moreover, a numerical reference representation of
the conduction losses is made to verify the analytical expressions.
Numerical analysis is firstly based on the pure sinusoidal reference three-phase voltages.
The results of the numerical analysis and the results of the analytical equations
are coherent. A comparison of the MOSFET inverter with reverse conduction characteristics
and the assumption without reverse conduction is made. Without reverse
conduction, the losses of one power module are higher than the one with reverse conduction
at both the high and low current levels. The difference can be more than 20
% compared to the case with reverse condition at the rated current of the selected
module, CAS300M12BM2, 150 A. When the phase current is low and there is no
diode conducting during the operation, the losses without reverse conduction can
be more than 100 % higher. Furthermore, the losses resulting from third harmonic
injection and using the common mode reduction are calculated, and compared with
the losses using a pure sinusoidal reference. The conduction losses of those two
different PWM methods are found to be small and presented in tables.

PB Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola,

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/232013/232013.pdf

OL 30