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• Maximum efficiency

• Maximum reliability

• Size reduces and less weight

Application of Power Electronics

• Power Electronics is used in almost all the equipment wherever the efficient power conversion is required. Major applications are presented below:

1. Commercial Application: Air Conditiooner, lighting System, UPS, Elevator

2. Domestic Application: Refrigerator, AC, Personal Computer etc.

3. Industrial Application: Pump, Compressor, Induction Heating, Welding Equipment etc.

4. Aerospace Application: Aircraft Power System, Satellite etc.

5. Telecommunication: Battery Charger, Power supplies

6. Transportation: Electrical Locomatives, Bttery Charging System For Electrical Vehical

7. Utility System: Static VAR Compensation (SVC), High Voltage DC Transmission (HVDC), Fuel Cell, Energy Storage System etc.

Power Semiconductor Devices

• Power semiconductor devices are playing vital role for the design of power electronics equipments. These are used as a switch.

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Power Diodes

• Diode is a 2-terminal PN junction semiconductor device with terminal anode (A) and Cathode (K).

• P-N junction is formed by alloying, diffusion and epitaxial growth.

• Uncontrolled device.

• Current Rating: 1 A -Several thousand A

• Voltage Rating: 15 V -50 kV

When anode is made at higher potential than the cathode , the device is said to be forward biased and a forward current starts to flow from A to K.

Switching Characteristics of Diode:

• Various categories of Power Electronics Converter

• Different types of PE converter are presented below:

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