DSPSolutionforPermanentMagnetSynchronousMotor

Table of Contents
1. Introduction ................................................................................................................................... 7
2. The DSP in motor control.............................................................................................................. 7
2.1 Motor control trend.................................................................................................................. 7
2.2 Benefits of the DSP controllers ................................................................................................ 8
2.3 A large range of applications................................................................................................... 9
3. The TMS320C24x family............................................................................................................... 9
4. The Synchronous motor............................................................................................................... 11
4.1 Electric motors ....................................................................................................................... 11
4.2 The permanent-magnet motor technology.............................................................................. 11
5. Enhanced motor control .............................................................................................................. 13
5.1 A vector control method ......................................................................................................... 13
5.2 The FOC principle ................................................................................................................. 14
5.3 Space Vector Modulation ....................................................................................................... 16
5.4 Field weakening at high speeds with closed loop scheme...................................................... 19
5.5 Maximum DC bus voltage of the inverter control .................................................................. 20
6. Sensor and sensorless algorithms................................................................................................ 21
6.1 Current remote measurement and calculation ....................................................................... 21
6.2 Using a speed sensor.............................................................................................................. 23
6.3 Sensorless controlled PMSM Drive........................................................................................ 23
7. An example studied ...................................................................................................................... 25
7.1 Power electronics................................................................................................................... 25
7.2 The control strategy ............................................................................................................... 26
7.3 Software implementation........................................................................................................ 26
7.4 Few results ............................................................................................................................. 27
8. Conclusion.................................................................................................................................... 27
9. References ....................................................................................................................................