Sensorless Control of Low-Power Brushless DC Motor Based on the Use of Back-EMF

Stepanov, Anatoly; Enin, V.N.

doi:10.1109/uralcon.2019.8877642

Cited by 1 publication

(3 citation statements)

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“…The back-EMF differences eab = eaeb, ebc = ebec, eca = ecea. They are calculated using equation (1). to calculate the back-…”

Section: Mathematical Model Of Brushless DC Electric Motormentioning

confidence: 99%

“…Trapezoidal function dΦ/dθ (Φ is magnetic flux, θ electric angle) is approximated by piecewise linear function with inscribed ellipse [1]. This function Φ'(θ) is used when simulation the BLDC motor.…”

Section: Mathematical Model Of Brushless DC Electric Motormentioning

confidence: 99%

“…This paper is an extension of conference report "Sensorless control of low-power brushless DC motor based on the use of back-EMF," presented in "2019 International Ural Conference on Electrical Power Engineering (UralCon 2019)" [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sensorless Control and Corrected Error Commutation of the Brushless DC Motor

Stepanov¹,

Enin²

2020

Adv. sci. technol. eng. syst. j.

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This paper presents a simple method for correcting the error of commutation windings for sensorless control of a brushless DC motor with a small inductance. Switching error analysis is performed based on the phase currents of the switched-off and switched-on phases. To correct the commutatiuon signals for the inverter, a speed-independent function is used, calculated from the back-EMF, by selecting its coefficients. The back-EMF is calculated for the system obtained by transformed a three-phase system to a two-phase one, which reduces the system dimension. An algorithm for start-up the motor with sensorless control based on the method of align and damping the rotor vibrations in a stable equilibrium position is proposed. The back-EMF is approximated by a function based on a piecewise linear function and an inscribed ellipse, for a more accurate description of the shape of the back-EMF. This approximation is used when simulation the motor. The simulation confirms the effectiveness of the proposed method for correcting the commutation error in the case of sensorless control of a low-power BLDC motor.

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“…The back-EMF differences eab = eaeb, ebc = ebec, eca = ecea. They are calculated using equation (1). to calculate the back-…”

Section: Mathematical Model Of Brushless DC Electric Motormentioning

confidence: 99%

Section: Mathematical Model Of Brushless DC Electric Motormentioning

confidence: 99%