Motor Control

Types of Converters in Power Electronics

Types of Converters in Power Electronics: The different types of converters in power electronics are AC/DC Converters AC/AC Converters The Matrix Converter DC/DC Converters DC/AC Converters Control VSI Current Source Inverters (CSI) AC/DC Converters: AC DC Converters – The naturally commutated phase-controlled converter is a common type of controlled power electronic converter which has reigned …

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What is Power Electronic Converter?

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 last four decades and has emerged into a multidisciplinary technology. With basic thyristors, the converters can be naturally commutated or force commutated type. In a …

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Block Diagram of Electrical Drives

Block Diagram of Electrical Drives | Advantages | Applications: Block Diagram of Electrical Drives – Invention of thyristor led to emergence of semiconductor drives in early sixties. The improvements in converters and development of new drive-control strategies, such as field oriented (or vector) control of ac drives, sliding-mode control, energy saving strategies, etc. brought about …

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Static Induction Thyristor (SITH) – Symbol and its Workings

Static Induction Thyristor (SITH) – Symbol and its Workings: An Static Induction Thyristor (SITH) or SI-thyristor is a self-controlled GTO-like on-off device commercially introduced in Japan in 1988. Similar device, known as field-controlled thyristors (FCT) or field-controlled diode (FCD), were developed in USA. The device symbol is shown in Fig. 11.10. It is essentially a …

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Insulated Gate Bipolar Transistor (IGBT)

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 (fast acting features and high power capability) and thyristor. The device is also known as MOSIGT, COMFET (conductively modulated FET), or GEMFET (gain modulated FET), …

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What is Power MOSFET?

What is Power MOSFET?: What is Power MOSFET? – The power metal oxide semiconductor field-effect transistor (MOSFET) is a device derived from the field effect transistor (FET) for use as a fast-acting switch at power levels. Unlike the bipolar transistor which is current controlled, the MOSFET is a voltage controlled device. The main terminals are …

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Darlington Transistor Working

Darlington Transistor Working: Darlington Transistors Working – A Darlington-connected transistor pair is shown in Fig. 11.6. The current gain of the power transistor can be considerably improved if the base drive current is obtained from another transistor. This is called a Darlington arrangement. The driver transistor can be incorporated on the same silicon chip, with …

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