What is Sinusoidal Pulse Width Modulation?: In Sinusoidal Pulse Width Modulation the pulse-width instead of being uniform as in the waveform of Fig. 11.55 is a sinusoidal function of its…
Basic Principle of Chopper Circuit: A Basic Principle of Chopper Circuit is essentially a thyristor switch in series with the load as shown in Fig. 11.27(a). A shunting diode is…
Three Phase Semi Converter feeding Separately Excited DC Motor: Large-kW motors are fed from 3-phase supply through three Phase Converters. In a three Phase Semi Converter, the ripple frequency of…
DC Motor Control through Converters: DC motor control is conveniently and efficiently achieved by phase-controlled converters wherein the ac input voltage is converted to a controlled dc output. The commutation…
Thyristor Control of Motors: Thyristor Control of Motors - A variety of thyristor control circuitry has been devised for use in motor control depending upon the type of supply (ac/dc)…
What is Power Electronic Converter?: What is Power Electronic Converter? - Since the introduction of the thyristor, the Power Electronic Converter technology has progressed through intense technological evolution for the…
Recent Trends in Power Semiconductors: The recent trends in Power Semiconductors from application point of view show that MOSFETs and IGBTs are replacing BJTs almost completely while GTOs are currently…
Insulated Gate Bipolar Transistor (IGBT): An Insulated Gate Bipolar Transistor (IGBT) is basically a hybrid MOS-gated turn on/off bipolar transistor that combines the features of MOSFET (voltage control features), BJT…