Why Power Electronics

Power electronics is a technology associated with the efficient conversion, control and conditioning of electric power by static means from its available input form into the desired electrical output form. Power electronics is used for quality control of power supply i.e. better power factor and it makes the system 10-100 times smaller and lighter as well as 10 times more efficient power supply in comparison with previous technology used. The control design for different distributed energy system helps protect the system from damaging i.e. minimum damage will occur. It makes mobile phone last longer, makes hybrid cars practicable and helps make electric generation possible from sources ranging from solar cells on roof to nuclear reactor in rural areas. It has a potential to make a huge contribution to the low carbon economy - power savings on conventional electrical devices of 30-40% are here now, and there is more to come.

Fig: Power System employing one dc supply created from the mains and distributed individual power supplies for each subsystem