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Determining the Position of the Brushless DC Motor Rotor

Author

Listed:
  • Krzysztof Kolano

    (Faculty of Electric Drives and Machines, Lublin University of Technology, 20-618 Lublin, Poland)

Abstract

In brushless direct current (or BLDC) motors with more than one pole pair, the status of standard shaft position sensors assumes the same distribution several times for its full mechanical rotation. As a result, a simple analysis of the signals reflecting their state does not allow any determination of the mechanical position of the shaft of such a machine. This paper presents a new method for determining the mechanical position of a BLDC motor rotor with a number of pole pairs greater than one. In contrast to the methods used so far, it allows us to determine the mechanical position using only the standard position sensors in which most BLDC motors are equipped. The paper describes a method of determining the mechanical position of the rotor by analyzing the distribution of errors resulting from the accuracy proposed by the BLDC motor’s Hall sensor system. Imprecise indications of the rotor position, resulting from the limited accuracy of the production process, offer a possibility of an indirect determination of the rotor’s angular position of such a machine.

Suggested Citation

  • Krzysztof Kolano, 2020. "Determining the Position of the Brushless DC Motor Rotor," Energies, MDPI, vol. 13(7), pages 1-9, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1607-:d:339961
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    Citations

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    Cited by:

    1. Vadim Carev & Jan Roháč & Martin Šipoš & Michal Schmirler, 2021. "A Multilayer Brushless DC Motor for Heavy Lift Drones," Energies, MDPI, vol. 14(9), pages 1-19, April.
    2. Krzysztof Kolano & Bartosz Drzymała & Jakub Gęca, 2021. "Sinusoidal Control of a Brushless DC Motor with Misalignment of Hall Sensors," Energies, MDPI, vol. 14(13), pages 1-13, June.
    3. Krzysztof Kolano & Artur Jan Moradewicz & Bartosz Drzymała & Jakub Gęca, 2022. "Influence of the Placement Accuracy of the Brushless DC Motor Hall Sensor on Inverter Transistor Losses," Energies, MDPI, vol. 15(5), pages 1-13, March.

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