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Power Electronics Lecture (2)

Power Electronics Lecture (2). Prof. Mohammed Zeki Khedher Department of Electrical Engineering University of Jordan. 1. Different types of Power Converters. Diode rectifiers (uncontrolled rectifiers). Line commutated converters or AC to DC converters (controlled rectifiers).

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Power Electronics Lecture (2)

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  1. Power ElectronicsLecture (2) Prof. Mohammed Zeki Khedher Department ofElectrical Engineering University of Jordan 1

  2. Different types of Power Converters • Diode rectifiers (uncontrolled rectifiers). • Line commutated converters or AC to DC converters (controlled rectifiers). • AC voltage (RMS voltage) controllers (AC to AC converters). 2 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  3. Cyclo converters (AC to AC converters at low output frequency). • DC choppers (DC to DC converters). • Inverters (DC to AC converters). 3 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  4. AC to DC Converter Type of input: AC supply (fixed voltage & frequency) Type of output: DC voltage (variable) 4 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  5. 5 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  6. 6 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  7. Applications • Speed control of DC motor in DC drives. • UPS. • HVDC transmission. • Battery Chargers. 7 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  8. AC Voltage Regulators Type of input: AC supply (fixed voltage & frequency). Type of output: Variable AC RMS O/P voltage. 8 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  9. 9 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  10. Applications • Speed control of ac motors. • Speed control of fans (domestic and industrial fans). • AC pumps. 10 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  11. Cyclo Converters Type of input: AC supply (fixed voltage & frequency). Type of output: Variable frequency ac O/P voltage. 11 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  12. Applications • Traction vehicles • Gearless rotary kilns. 12 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  13. DC Choppers Type of input: Fixed DC supply voltage. Type of output: Variable DC voltage. 13 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  14. 14 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  15. Applications • Speed control of DC motors from a DC supply. • DC drives for sub-urban traction. • Switching power supplies. 15 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  16. Inverters Type of input: Fixed DC supply voltage. Type of output: AC O/P voltage. 16 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  17. 17 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  18. Applications • Industrial AC drives using induction and synchronous motors. • Uninterrupted power supplies (UPS system) used for computers, computer labs. 18 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

  19. Peripheral Effects 19 Prof. M. Madhusudhan Rao, E&C Dept., MSRIT

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