分享一片国外文章： Field Orientated Control of 3-Phase AC-Motors.pdf
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Literature Number: BPRA073
Texas Instruments Europe
February 1998
Contents
1. Introduction.............................................................................................................. 1
2. Classic AC drives..................................................................................................... 1
3. Field Orientated Control........................................................................................... 2
3.1 Space Vector definition and projection ......................................................... 3
3.1.1 The (a,b,c)->(a,b) projection (Clarke transformation) .................. 3
3.1.2 The (a,b)->(d,q) projection (Park transformation)........................ 4
3.1.3 The (d,q)->(a,b) projection (inverse Park transformation) ........... 5
3.2 The basic scheme for the FOC..................................................................... 5
3.3 The input for the FOC ................................................................................... 7
3.3.1 Current sampling ......................................................................... 7
3.3.2 Rotor flux position........................................................................ 7
3.4 Conclusion.................................................................................................... 8
4. The PI regulator....................................................................................................... 8
5. The Space Vector PWM.......................................................................................... 9
5.1 The 3-phase Inverter .................................................................................... 9
5.2 The Space Vector Pulse Width Modulation (SVPWM)................................ 10
5.3 Comparison SV-sinusoidal PWM................................................................ 12
6. Conclusion............................................................................................................. 13
References ................................................................................................................ 14
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