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During real-time operation of electric vehicles, motor parameter variations can significantly effect and deteriorate control performances of electric traction drives. For an open-loop torque control system, the parameter mismatch between the electric motor and the controller results in large steady-state error of the output torque response. This paper presents an adaptive torque controller based on...
This paper presents a new robust speed control approach for Interior Permanent Magnet Synchronous Motor (IPMSM) drives with incorporated Maximum Torque per Ampere (MTPA) regulation. Compared to the conventional closed loop structure, where the reference torque for the MTPA regulator is equal to the output signal of the PI speed controller, the proposed system updates this reference via implementation...
For electric vehicle applications, it is desirable to achieve maximum torque output of the traction motor for fast acceleration and minimize electrical losses, from energy saving point of view, which is achieved by Maximum Torque Per Ampere (MTPA) and Maximum Efficiency (ME) control methods, respectively. This paper introduces a compromise solution between MTPA and ME approaches obtained for Interior...
Electrical power generation from wind energy has been recognized as one of major realistic energy sources in CO2 emission reduction worldwide. However, matching power generation with the load demand remains a great challenge, due to the nature of wind energy intermittency. The paper addresses this issue by developing a new system with the structure of a hybrid connection of the wind turbine and compressed...
Pneumatic actuators are widely used in industry and many other applications, whereas low energy efficiency has been recognized as a critical drawback compared with corresponding hydraulic and electrical actuators. The paper presents a new hybrid pneumatic-electrical system aiming at energy efficiency improvement by recovering exhaust air energy from pneumatic actuator outlets to generate electricity...
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