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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.


Experimental Setup.
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pone.0130923.g004: Experimental Setup.

Mentions: In this section, the performance of the proposed method is verified by simulation and experimental results. Experiments are performed with a 47 kW PWM inverter fed IPMSM drive. The IPMSM is driven in the torque mode. An induction motor is used to apply the load torque to IPMSM, and is driven in the speed mode. The output torque of IPMSM can be read out from a torque sensor installed on the shaft. The measuring range of the torque senor is 200Nm with a measuring accuracy of 0.4Nm. The experimental setup is shown in Fig 4.


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

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

Experimental Setup.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0130923.g004: Experimental Setup.
Mentions: In this section, the performance of the proposed method is verified by simulation and experimental results. Experiments are performed with a 47 kW PWM inverter fed IPMSM drive. The IPMSM is driven in the torque mode. An induction motor is used to apply the load torque to IPMSM, and is driven in the speed mode. The output torque of IPMSM can be read out from a torque sensor installed on the shaft. The measuring range of the torque senor is 200Nm with a measuring accuracy of 0.4Nm. The experimental setup is shown in Fig 4.

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.