TY - JOUR
T1 - Online Control of IPMSM Drives for Traction Applications Considering Machine Parameter and Inverter Nonlinearities
AU - Hoang, Khoa Dang
AU - Aorith, Hawa K.A.
N1 - Publisher Copyright:
© 2015 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - In this paper, an online control method of interior permanent magnet synchronous machine (IPMSM) drives for traction applications considering machine parameter and inverter nonlinearities is presented. It is shown that the conventional technique using parameter information instantly extracted from premeasured parameter look-up tables (LUTs) only determines the local maximum torque per ampere (MTPA) operating point associated with this specific parameter information without evaluating the global MTPA achievement. Therefore, global MTPA operation may not be achieved for conventional online control IPMSM drives with extreme nonlinear machine parameters (e.g., short-period overload operations). Thus, a model-based correction method using stator flux adjustment is proposed for an online quasiglobal MTPA achievement. It is also proven that in the flux-weakening (FW) region, due to the inverter nonlinearities, a lower than expected maximum achievable torque for a demanded speed and a higher than expected current magnitude for a demanded torque may be obtained. Hence, an inverter nonlinearity compensation (INC) method exploiting the voltage feedback (FB) loop is introduced and its advantages over the conventional INC scheme are demonstrated. The proposed online control method is validated via measurements on a 10-kW IPMSM.
AB - In this paper, an online control method of interior permanent magnet synchronous machine (IPMSM) drives for traction applications considering machine parameter and inverter nonlinearities is presented. It is shown that the conventional technique using parameter information instantly extracted from premeasured parameter look-up tables (LUTs) only determines the local maximum torque per ampere (MTPA) operating point associated with this specific parameter information without evaluating the global MTPA achievement. Therefore, global MTPA operation may not be achieved for conventional online control IPMSM drives with extreme nonlinear machine parameters (e.g., short-period overload operations). Thus, a model-based correction method using stator flux adjustment is proposed for an online quasiglobal MTPA achievement. It is also proven that in the flux-weakening (FW) region, due to the inverter nonlinearities, a lower than expected maximum achievable torque for a demanded speed and a higher than expected current magnitude for a demanded torque may be obtained. Hence, an inverter nonlinearity compensation (INC) method exploiting the voltage feedback (FB) loop is introduced and its advantages over the conventional INC scheme are demonstrated. The proposed online control method is validated via measurements on a 10-kW IPMSM.
KW - Dead-time compensation
KW - flux-weakening control
KW - interior permanent magnet synchronous machine
KW - inverter nonlinearity
KW - maximum torque per ampere control
UR - http://www.scopus.com/inward/record.url?scp=85009150188&partnerID=8YFLogxK
U2 - 10.1109/TTE.2015.2477469
DO - 10.1109/TTE.2015.2477469
M3 - Article
AN - SCOPUS:85009150188
VL - 1
SP - 312
EP - 325
JO - IEEE Transactions on Transportation Electrification
JF - IEEE Transactions on Transportation Electrification
SN - 2332-7782
IS - 4
M1 - 7247762
ER -