Switching characteristics of power electronic devices

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the characteristics of power electronic devices in one touch. only image files are there & the detailed explanations of these are given in different slide shares.

SWITCHING CHARACTERISTICS OF
POWER ELECTRONIC DEVICES

• PREPARED BY
SNEHAL V. PURANI

DYNAMIC CHRACTERISTICS OF IGBT
• TURN ON

Lecture Outline Introduction to subject Application Areas Power Electronic Devices Power Converters What is power electronics? 1) Definition Power Electronics: is the electronics applied to conversion and control of electric power. Prerequisites Power electronics incorporates concepts from the fields of Analog circuits Electronic devices Control systems Power systems Magnetics Electric machines Numerical simulation Scope It is not possible to build practical computers, cell phones, personal data devices, cars, airplanes, industrial processes, and other everyday products without power electronics. Alternative energy systems such as wind generators, solar power, fuel cells, and others require power electronics to function. Technology advances such as electric and hybrid vehicles, laptop computers, microwave ovens, flat-panel displays, LED lighting, and hundreds of other innovations were not possible until advances in power electronics enabled their implementation. Although no one can predict the future, it is certain that power electronics will be at the heart of fundamental energy innovations. Applications: Electric VehicleTesla Model S Functions of the power electronics: 1. Convert the DC battery voltage to the variable AC required to drive the AC motor 240 V battery Variable-frequency, variable-voltage AC drives the motor AC motor propels the rear axle Up to 330 kW (acceleration) Up to 60 kW regenerative braking 2. Control charging of the battery Interface to 240 V 60 Hz 1φ 100 A circuit in garage. Control AC current waveform to be sinusoidal, unity power factor. Control charging of battery to maximize life. Applications: Hybrid VehiclesPrius Power Electronics Module: Convert the DC battery voltage to the variable AC required to drive the AC motor. Includes dc-dc boost converter and dc-3φ ac inverter Control system can operate in all-electric mode or in hybrid gas+electric mode Partial-power electronics

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