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Unformatted text preview: Lecture Set 2 Energy Conversion S.D. Sudhoff Spring 2012 Reading Techniques for Analysis of Electromechanical Systems h Section 5.1.15.1.9 ee course web page 2 h See course web page Overall Goal We know how to h (1) flux linkage in terms of current and position h (2) current in terms of flux linkage and position 3 Using either (1) or (2), we can find an expression for force or torque for an electromechanical device ! No other information needed. Magnetic System Descriptions For single winding systems, we may describe our magnetics (ignoring hysteresis) with one of the following orm 1: 4 h Form 1: h Form 2: ) x , ( f i = ) x , i ( f i = Magnetic System Descriptions For multiwinding systems, we may describe our magnetics (ignoring hysteresis) with one of the following h Form 1: 5 h Form 2: Form 2 is most common for both single and multiwinding systems ) x , ( f i = ) x , ( i i f = Field Energy Physical definition of the coupling field 6 Energy into the coupling field m e f W W W + = Field Energy To find the field energy we will assume a lossless field plications 7 h Implications h Concerns Field Energy 8 Field Energy 9 Thus  = = f f , j , j x x e J j j j f dx f d i W 1 Calculation of Field Energy A mathematical experiment ....
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 Spring '08
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 Flux

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