Power Semiconductor Devices Essay -- Power Conversion Essays

Power Semiconductor DevicesIntroductionToday there are many billet semiconductor devices used in contrasting applications of government agency conversion. The diode is angiotensin converting enzyme of the oldest semiconductors devices and is still wildly used today in power electronics. Diodes are found in virtu exclusivelyy all power converts in one form or another. For this reason our discussion will be focused on the application of power diodes. Power Diodes are two terminal electronic devices that permit current flow in predominantly one direction. Diodes are composed of differently doped silicon or germanium bounded together at a junction. PurposeAs an electrical Engineering specializing in Power Electronics it is important to understanding the application of different types of diodes in power electronics. The technology behind the development of pn junctions and solid state devices is continuously advancing. This is why it is important to be informed of the most mode rn advances of one of the worlds oldest power semiconductor devices. This paper will focus on the construction and ratings of various types of power diodes to convey the importance diodes have power electronics.Power Diodes Power diodes are successors to the very first semiconductor devices. Power diodes are mainly used as uncontrolled rectifiers to convert single- figure or three- phase AC voltage to a rippled DC voltage. Typically they are constructed of a mixture of differently doped silicon or germanium. Most frequent are the silicon diodes because they can operate at higher currents and junction temperatures then germanium diodes. All diodes are devices that conduct current in solitary(prenominal) one direction. Whenever the voltage on the anode is positive with respect to the cathode, the dio... ...e a diode that will satisfy the requirements of the circuit while increasing overall circuit ability and maintaining reliability. Through improved modern design techniques diod es are no longer a weak component, and are becoming more important in power electronics with the increase demand for higher power quality and power efficiency. Works CitedN. Mohan, T.M. Undeland, W.P. Robbins, Power Electronics, John Wiley & Sons, Inc. 2003 Timothy L. Skvarenina, The Power Electronics Handbook CRC Press LLC 2002 Materials Research night club Symposium Proceedings Volume 483, Power Semiconductor Materials and Devices Materials Research Society 1998 Dura-Bilt5i MV Engineering Reference Book, GE Toshiba Automation Systems, U.S.A. 2003 Kilowatt Classroom Electrical Training Seminars - Web Site Home Page http//www.kilowattclassroom.com/