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A Practical Torque Estimation Method for Interior Permanent Magnet Synchronous Machine in Electric Vehicles.

Wu Z, Lu K, Zhu Y - PLoS ONE (2015)

Bottom Line: The torque output accuracy of the IPMSM in electric vehicles using a state of the art MTPA strategy highly depends on the accuracy of machine parameters, thus, a torque estimation method is necessary for the safety of the vehicle.Moreover, by taking into account the non-ideal characteristic of the inverter, the torque estimation accuracy is improved significantly.The effectiveness of the proposed method is demonstrated through MATLAB/Simulink simulation and experiment.

View Article: PubMed Central - PubMed

Affiliation: School of Automotive Engineering, Tongji University, Shanghai, China; Sino-German School for Postgraduate Studies, Tongji University, Shanghai, China.

ABSTRACT
The torque output accuracy of the IPMSM in electric vehicles using a state of the art MTPA strategy highly depends on the accuracy of machine parameters, thus, a torque estimation method is necessary for the safety of the vehicle. In this paper, a torque estimation method based on flux estimator with a modified low pass filter is presented. Moreover, by taking into account the non-ideal characteristic of the inverter, the torque estimation accuracy is improved significantly. The effectiveness of the proposed method is demonstrated through MATLAB/Simulink simulation and experiment.

No MeSH data available.


Torque Estimation Results with the Reference Current  = 50A and the Reference Current  = -150A at 4000rpm.
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pone.0130923.g008: Torque Estimation Results with the Reference Current = 50A and the Reference Current = -150A at 4000rpm.

Mentions: Fig 8 shows the estimation results at 4000rpm with the reference current of 50A and the reference current of -150A, the PM motor is operating in flux weakening region. The actual torque output is from 53Nm to 58Nm. The average estimation error of the proposed method is within 2Nm, and the average estimation error of the second method is 7Nm. The estimated result of the third method fluctuates from 0Nm to 130Nm.


A Practical Torque Estimation Method for Interior Permanent Magnet Synchronous Machine in Electric Vehicles.

Wu Z, Lu K, Zhu Y - PLoS ONE (2015)

Torque Estimation Results with the Reference Current  = 50A and the Reference Current  = -150A at 4000rpm.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4482678&req=5

pone.0130923.g008: Torque Estimation Results with the Reference Current = 50A and the Reference Current = -150A at 4000rpm.
Mentions: Fig 8 shows the estimation results at 4000rpm with the reference current of 50A and the reference current of -150A, the PM motor is operating in flux weakening region. The actual torque output is from 53Nm to 58Nm. The average estimation error of the proposed method is within 2Nm, and the average estimation error of the second method is 7Nm. The estimated result of the third method fluctuates from 0Nm to 130Nm.

Bottom Line: The torque output accuracy of the IPMSM in electric vehicles using a state of the art MTPA strategy highly depends on the accuracy of machine parameters, thus, a torque estimation method is necessary for the safety of the vehicle.Moreover, by taking into account the non-ideal characteristic of the inverter, the torque estimation accuracy is improved significantly.The effectiveness of the proposed method is demonstrated through MATLAB/Simulink simulation and experiment.

View Article: PubMed Central - PubMed

Affiliation: School of Automotive Engineering, Tongji University, Shanghai, China; Sino-German School for Postgraduate Studies, Tongji University, Shanghai, China.

ABSTRACT
The torque output accuracy of the IPMSM in electric vehicles using a state of the art MTPA strategy highly depends on the accuracy of machine parameters, thus, a torque estimation method is necessary for the safety of the vehicle. In this paper, a torque estimation method based on flux estimator with a modified low pass filter is presented. Moreover, by taking into account the non-ideal characteristic of the inverter, the torque estimation accuracy is improved significantly. The effectiveness of the proposed method is demonstrated through MATLAB/Simulink simulation and experiment.

No MeSH data available.