Introduction of power electronics

• Power electronics belongs partly to power engineers and partly to electronics engineers. It means it is the combination of power engineering and electronics engineering.
• Power engineering is mainly concerned with generation, transmission, distribution and utilization of electric energy at high efficiency.
• The simple engineering is guided by distortion-less production, transmission and reception of data and signals of very low power level of the order of a few watts, or milliwatts without much consideration of the efficiency.
• Power electronics is also known as industrial electronics.
• The apparatus associated with power engineering is based mainly on electromagnetic principles, whereas in electronics engineering they are based on physical phenomenon in vacuum, gases/vapours and semiconductors.
• This subject concerns the application of electronic-principles into situations that are rated at power levels rather than signal levels.
• It may also be defined as a subject that deals with the apparatus and equipment working on the principle of electronics, but rated at power level, not at signal level.

Applications of Power electronics

Aerospace

• Space shuttle power supplies
• Satellite power supplies
• Aircraft power systems

Commercial

• Advertising
• Heating
• Air conditioning
• Central refrigeration
• Computer and office equipment
• Uninterruptible power supplies
• Elevators
• Light dimmers and flashers

Industrial

• Arc and industrial furnace
• Blowers and fans
• Pump and compressors
• Industrial lasers
• Transformers
• Tap chargers
• Rolling mills
• Textile mills
• Excavators
• Cement mills
• Welding

Residential

• Air-conditioning
• Cooking
• Lighting
• Space heating
• Refrigerators
• Electric-door openers
• Dryers
• Fans
• Personal computers
• Vacuum cleaners
• Washing and sewing machines
• Light dimmers
• Food mixers
• Electric blankets
• Food warmer trays

Telecommunication

• Battery chargers
• Power supplies (dc or UPS)

Transportation

• Battery chargers
• Electric locomotives
• Street cars
• Trolley buses
• Subways
• Automotive electronics

Utility system

• High voltage dc transmission (HVDC)
• Excitation systems
• Static circuit breakers
• Fans and boiler-feed pumps
• Supplementary energy systems (solar, wind)

To know about this lecture in more detail please visit on https://youtu.be/Yfwi8uHUIxY