ECE :: Power Electronics
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A 3 phase bridge inverter is fed by 400 V battery. The load is star connected and has a resistance of 10 Ω per phase. The peak value of thyristor current is
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The main utility of SCR is due to
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In a single phase full wave ac regulator the firing angles during both half cycles are equal.
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In a 3 phase full wave regulator feeding a star connected resistance load, firing angle is 75°. Then the number of thyristors conducting at one time is
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The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below figure . During turn on time T, voltage reduces linearly from V to 0 and current rises linearly from 0 to I. The energy loss during time T is
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The circuit in figure is for
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A single phase half bridge inverter required to feed R-L loads needs
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Typical values of
for an SCR are in the range of -
When a dc chopper feeds an RLE load, the load current, during steady state operation
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