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Electric vehicles pose specific challenges to the drive system and the control scheme. Safety-relevant features like slip-slide control, electronic stability programs or emergency-brake assistance require fast torque control in the whole speed range at limited voltage control margin. Stator-flux-oriented Indirect Stator-Quantities Control (ISC) is limited only by the physical bounds of available voltage...
Described the surface-mount permaent magnet synchronous motor used in electric vehicles operation principle, introduce the current limit trajectory and the voltage limit trajectory based on its mathematical model, Flux-weakening control extends the speed range of the machine effectively. Conventional flux-weakening speed control above the rate speed, the q-axis current and d-axis current coupling...
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