dw'=∫fdx+ ∫d+ ∫2d2 1=或2=0 dw'=∫L(x)1di+∫(M(x)1+Lz(X)h)di ant constant =2☆)2+M+2,) f=+ow' ax .2 1:20L1+上i20L2+i；0 2 dx 2'dx VI.Synchronous Machine Stator magnetic axis Highly permeable magnetic material Rotor magnetic axis o©o Stator Rotor slot o女⊙⊙©⊙n© Stator slot ① Stator coil Rotor coil- Stator tooth Rotor 回 t/ ① Rotor tooth 母双网网网_A Air gap Length I perpendicular to page 0-s+0'is Geometry of smooth-air-gap rotating machine showing distributed windings on stator and rotor of a single-phase machine. 6.641,Electromagnetic Fields,Forces,and Motion Lecture 13 Prof.Markus Zahn Page 11 of 146.641, Electromagnetic Fields, Forces, and Motion Lecture 13 Prof. Markus Zahn Page 11 of 14 1 2 2 1 1 1 2 2 12 3 ii0 i 0 i cons tan t x cons tan t x cons tan t dw' = f dx di di = = = = = = + λ+ λ ∫∫ ∫ ( ) ( ( ) ( ) ) 2 1 1 11 1 2 22 i =0 i =constant x=constant x cons tan t dw' = L x i di M x i L x i di = + + ∫ ∫ () () ( ) 2 2 1 1 12 2 2 1 1 = L x i M x ii L x i 2 2 + + 1 2 2 2 1 2 1 21 2 i ,i w' 1 1 dL dL dM f= = i i ii x 2 dx 2 dx dx ∂ + ++ ∂ VI. Synchronous Machine