Transcription of 6.061 Class Notes, Chapter 3: Polyphase Networks
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6.061 Class Notes, Chapter 3: Polyphase Networks
Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science Introduction to Power Systems Class Notes Chapter 3 Polyphase Networks Kirtley Jr. 1 Introduction Most electric power applications employ three phases. That is, three separate power carrying circuite, with voltages and currents staggered symmetrically in time are used. Two major reasons fortheuseof threephasepowerareeconomical useof conductorsand nearly constantpower flow. Systems with more than one phase are generally termed Polyphase . Three phase systems are the most common, but there are situations in which a different number of phases may be used. Two phase systems have a simplicity that makes them useful for teaching vehicles and for certain servomechanisms.
circuite, with voltages and currents staggered symmetrically in time are used. Two major reasons for the use of three phase power are economical use of conductors and nearly constant power flow. Systems with more than one phase are generally termed polyphase. Three phase systems are
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