Implementation and Control of Optimized Pulse Patterns for Salient Permanent Magnet Synchronous Machines in Electric Vehicles

Abstract:
Optimized pulse patterns (OPP) can be applied to improve the overall efficiency of the powertrain in electric vehicles. However, controlling OPPs to obtain a fast step response and to reject errors and disturbances is challenging. Therefore, this paper presents the implementation of OPPs in the control structure for electric drives in vehicles. Different methods are presented such as open-loop and closed loop-control of OPPs. Measurements are carried out to identify the modulation strategy with the highest efficiency considering both, the inverter and the electrical machine. These measurements are discussed in order to derive an optimal control strategy.