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Power Electronics and Motor Drives
book

Power Electronics and Motor Drives

by Bogdan M. Wilamowski, J. David Irwin
October 2018
Intermediate to advanced content levelIntermediate to advanced
1015 pages
40h 24m
English
CRC Press
Content preview from Power Electronics and Motor Drives
20-16 Power Electronics and Motor Drives
20.5 Resonant DC Link Converters with ZVS
To avoid the switching losses in the converter, a resonant circuit is connected between the DC source
and the PWM inverter. e basic principle is illustrated by the simple circuit shown in Figure 20.21a.
e resonant circuit consist of the LCR components. e load of the inverter is modeled by the I
o
cur-
rent source. I
o
is assumed to be constant in one cycle of the resonant circuit.
Switch S is turned o at t = 0 when i
L
= I
L0
> I
o
. First, assuming a lossless circuit (R = 0), the equations
for the resonant circuit are as follows:
i I
V
Z
t I I t
L o
DC
L o
= + +
0
0
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Publisher Resources

ISBN: 9781439802861