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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 at 600rpm with a Measured Torque of 50Nm.
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pone.0130923.g009: Torque Estimation Results at 600rpm with a Measured Torque of 50Nm.

Mentions: Fig 9 shows the torque estimation results of the three methods at 600rpm with a measured torque of 50Nm from the torque sensor. And the average estimation error of the proposed method is 1Nm. The average estimation error of the second method is 17Nm. And the result of the third method is not stable, because the experiment takes longer time than the simulation and the error of the integrator accumulates to a very big value.


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 at 600rpm with a Measured Torque of 50Nm.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0130923.g009: Torque Estimation Results at 600rpm with a Measured Torque of 50Nm.
Mentions: Fig 9 shows the torque estimation results of the three methods at 600rpm with a measured torque of 50Nm from the torque sensor. And the average estimation error of the proposed method is 1Nm. The average estimation error of the second method is 17Nm. And the result of the third method is not stable, because the experiment takes longer time than the simulation and the error of the integrator accumulates to a very big value.

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.