Next Article in Journal
Cooling Performance Enhancement of Air-Cooled Condensers by Guiding Air Flow
Next Article in Special Issue
Magnetically Nonlinear Dynamic Models of Synchronous Machines and Experimental Methods for Determining Their Parameters
Previous Article in Journal
Gas Turbine Cycle with External Combustion Chamber for Prosumer and Distributed Energy Systems
Previous Article in Special Issue
Modular Rotor Single Phase Field Excited Flux Switching Machine with Non-Overlapped Windings
Open AccessArticle

Sensorless PMSM Drive Implementation by Introduction of Maximum Efficiency Characteristics in Reference Current Generation

1
Energy Institute Hrvoje Požar, 10001 Zagreb, Croatia
2
Energy Agency of the Republic of Slovenia, 2000 Maribor, Slovenia
3
Power engineering institute, Faculty of Electrical Engineering and Computer Science; University of Maribor, 2000 Maribor, Slovenia
*
Author to whom correspondence should be addressed.
Energies 2019, 12(18), 3502; https://doi.org/10.3390/en12183502
Received: 30 July 2019 / Revised: 4 September 2019 / Accepted: 5 September 2019 / Published: 11 September 2019
(This article belongs to the Special Issue Energy Efficiency in Electric Devices, Machines and Drives)
This paper presents the efficiency improvement in a speed closed-loop controlled permanent magnet synchronous machine (PMSM) sensorless drive. The drive efficiency can be improved by minimizing the inverter and the PMSM losses. These can be influenced by proper selection of DC-bus voltage and switching frequency of the inverter. The direct (d-) and quadrature (q-) axis current references generation methods, discussed in this paper, further improve the efficiency of the drive. Besides zero d-axis current reference control, the maximum torque per ampere (MTPA) characteristic is normally applied to generate the d- and q-axis current references in vector controlled PMSM drives. It assures control with maximum torque per unit of current but cannot assure maximum efficiency. In order to improve efficiency of the PMSM drive, this paper proposes the generation of d- and q-axis current references based on maximum efficiency (ME) characteristic. In the case study, the MTPA and ME characteristics are theoretically evaluated and determined experimentally by measurements on discussed PMSM drive. The obtained characteristics are applied for the d- and q-axis current references generation in the speed closed-loop vector controlled PMSM drive. The measured drive efficiency clearly shows that the use of ME characteristic instead of MTPA characteristic or zero d-axis current in the current references generation improves the efficiency of PMSM drive realizations with position sensor and without it—sensorless control. View Full-Text
Keywords: magnetic loss; maximum efficiency (ME) characteristic; maximum torque per ampere (MTPA) characteristic; modeling; permanent magnet synchronous machine (PMSM); sensorless control magnetic loss; maximum efficiency (ME) characteristic; maximum torque per ampere (MTPA) characteristic; modeling; permanent magnet synchronous machine (PMSM); sensorless control
Show Figures

Figure 1

MDPI and ACS Style

Plantić, Ž.; Marčič, T.; Beković, M.; Štumberger, G. Sensorless PMSM Drive Implementation by Introduction of Maximum Efficiency Characteristics in Reference Current Generation. Energies 2019, 12, 3502.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop