This paper presents a new maximum torque per ampere (MTPA) control strategy for sensorless V/f controlled PMSM drives. The proposed theoretical basis can be applied to both surface permanent magnet synchronous motor (SPMSM) and interior permanent magnet synchronous motor (IPMSM) drives to obtain high efficiency. Two closed loops are required in the proposed drive. First, by using the oscillatory active power information, a load angle compensation component is generated to adjust the load angle to stabilize the system. Second, the drive imaginary power is regulated to follow the imaginary power of MTPA performance such that the drive can operate under the minimum copper loss condition in the steady state. The imaginary power controller can generate a voltage compensation component to properly adjust the drive voltage. Hence, the demanded MTPA performance is obtained. The provided simulation results show the performance and validity of the proposed strategy. The hardware implementation of the proposed control is now undertaking and the experimental results will soon be shown in the near publication.
Index Terms-interior permanent magnet synchronous motor (IPMSM), maximum torque per ampere (MTPA), surface permanent magnet synchronous motor (SPMSM), V/f control
This paper presents an integration of the interleaved bi-directional DC/DC converter with a vector controlled permanent magnet synchronous motor (PMSM) drive to give the motor operating in high speed with minimum copper loss control. The interleaved DC/DC converter is designed in the discontinuous conduction mode (DCM) such that the controller design becomes straightforward. The large signal perturbation usually makes the controller saturation and the inductor over current. Hence, the anti-windup and current limit considerations are also discussed in the paper. The modified vector controlled scheme of the PMSM drive is developed by considering dynamic DC link voltage boosting such that the motor can always have minimum copper loss performance in high speed. Finally, several experimental results are provided to show the performances of the integrated drive.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.