TY - GEN
T1 - Speed, rotor position and load torque estimation of the PMSM using an extended dynamic model and cascaded sliding mode observers
AU - Comanescu, Mihai
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/28
Y1 - 2016/7/28
N2 - The paper presents a method to estimate the rotor position, speed and load torque of the PMSM drive. The estimation is done using cascaded sliding mode observers (SMOs) and uses an extended dynamic model of the PMSM. A first SMO is constructed based on the current equations of the motor and estimates the EMFs; these are used to calculate the rotor position angle. The EMFs are also fed in a second SMO that estimates the speed and the load torque of the PMSM drive. The paper presents the design and analysis of the observers. In order to obtain accurate estimates, both observers are implemented using the second order sliding mode approach. It is shown that the estimates of the speed and torque are accurate both during transient and at steady-state. The method can be used in a sensorless PMSM implementation - if an estimate of the load torque is available, this allows to improve the response of the speed loop. The theoretical findings are supported with simulations.
AB - The paper presents a method to estimate the rotor position, speed and load torque of the PMSM drive. The estimation is done using cascaded sliding mode observers (SMOs) and uses an extended dynamic model of the PMSM. A first SMO is constructed based on the current equations of the motor and estimates the EMFs; these are used to calculate the rotor position angle. The EMFs are also fed in a second SMO that estimates the speed and the load torque of the PMSM drive. The paper presents the design and analysis of the observers. In order to obtain accurate estimates, both observers are implemented using the second order sliding mode approach. It is shown that the estimates of the speed and torque are accurate both during transient and at steady-state. The method can be used in a sensorless PMSM implementation - if an estimate of the load torque is available, this allows to improve the response of the speed loop. The theoretical findings are supported with simulations.
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U2 - 10.1109/SPEEDAM.2016.7525806
DO - 10.1109/SPEEDAM.2016.7525806
M3 - Conference contribution
AN - SCOPUS:84994137483
T3 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
SP - 98
EP - 103
BT - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
Y2 - 22 June 2016 through 24 June 2016
ER -