NDLI: Unipolar PWM predictive current-mode control of a variable-speed low inductance BLDC motor drive

Content Provider	IET Digital Library
Author	Valle, Rodolfo L. Almeida, Pedro M. de Ferreira, Andre A. Barbosa, Pedro G.
Abstract	This study presents the design and implementation steps of a digital predictive controller to regulate a low-inductance, three-phase, three-wire permanent magnet brushless DC motor currents. These types of motors are usually driven by multi-stage converters, switched at high frequencies, or use additional inductances to limit the current ripple. The motor's trapezoidal back electromotive force and rectangular currents waveforms make the design and the tuning process of linear controllers difficult. This task complexity increases when a wide speed range is considered. Digital predictive controllers are easily implemented in digital signal processors (DSPs), being successfully used to regulate currents of different types of power electronic converters. A unipolar pulse width modulation predictive controller is proposed here to regulate the rectangular currents of a brushless DC motor, without the need for any additional filter or converter. Experimental and simulation results using a 5 kW/48 V three-phase brushless DC (BLDC) motor are presented to demonstrate the feasibility of this proposal. It will be presented a methodology to compensate the conditioning and sampling circuits delays as well as the inverter's semiconductors voltage drop. The control algorithm was implemented in a TMS320F28335 DSP.
Starting Page	688
Ending Page	696
Page Count	9
ISSN	17518660
Volume Number	11
e-ISSN	17518679
Issue Number	Issue 5, May (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2016.0421
Journal	IET Electric Power Applications
Publisher Date	2017-05-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Brushless DC Motor Control of Electric Power System Current Control D.C. Machines DC Motor Drive Digital Control Digital Predictive Controller Digital Signal Processors Drive Electric Current Control Linear Controller Linear System Multistage Converter Optimal Control Power Electronic Converter Predictive Control Rectangular Current Waveform Sampling Circuit Delay Three-phase Three-wire Permanent Magnet Brushless DC Motor Current TMS320F28335 DSP Trapezoidal Back Electromotive Force Unipolar PWM Predictive Current-mode Control Variable-speed Low Inductance BLDC Motor Drive
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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