NDLI: Energy-efficient sensorless load angle control of a BLDC motor using sinusoidal currents

Content Provider	IET Digital Library
Author	Viaene, Jasper De Verbelen, Florian Derammelaere, Stijn Stockman, Kurt
Abstract	Nowadays, most brushless DC (BLDC) motors use Hall sensors or sensorless algorithms based on back-electromotive force (back-EMF) sensing to detect rotor position information. These methods detect the commutation moments but imply the use of rectangular stator currents which, according to recent literature, limits the energy efficiency. In this study, sinusoidal stator currents are used to increase the motor energy efficiency. As a consequence, standard control based on the feedback of the Hall sensors or based on sensorless techniques detecting the back-EMF zero-crossing cannot be used. Therefore, the authors propose a load angle control algorithm for BLDC motors without using position and speed sensors. The objective is to obtain energy-efficient sensorless control for the BLDC motor based on the measurement of only two current and one voltage signal. The energy saving potential of the proposed method is especially outspoken for fixed speed applications with varying loads, which are typical BLDC applications. Experimental results are presented to validate the proposed method. Energy efficiency measurements over the whole operating range of the BLDC motor are included and show an energy saving potential up to 9.5%.
Starting Page	1378
Ending Page	1389
Page Count	12
ISSN	17518660
Volume Number	12
e-ISSN	17518679
Issue Number	Issue 9, Nov (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/12/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2018.5059
Journal	IET Electric Power Applications
Publisher Date	2018-08-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Back-electromotive Force Back-EMF Sensing Back-EMF Zero-crossing BLDC Motor Brushless DC Motor Control of Electric Power System Current Voltage Signal D.C. Machines Electric Potential Energy Efficiency Measurement Energy Saving Potential Energy-efficient Sensorless Control Energy-efficient Sensorless Load Angle Control Fixed Speed Application Hall Sonsor Load Angle Control Algorithm Motor Energy Efficiency One Voltage Signal Position Control Rectangular Stator Current Rotor Position Information Rotors Sensorless Algorithm Sensorless Machine Control Sensorless Technique Sinusoidal Current Sinusoidal Stator Current Spatial Variables Control Speed Sonsor Standard Control Stators Typical BLDC Application
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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