NDLI: A New Sensorless Commutation Drive for Brushless DC Motors and Alternators

Content Provider	IEEE Xplore Digital Library
Author	Cheng-Hu Chen Ming-Yang Cheng
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan (Cheng-Hu Chen; Ming-Yang Cheng)
Abstract	A high performance bidirectional DC/AC converter is required for low emission and high efficiency propulsion systems, such as electric vehicles (EVs) and hybrid electric vehicles (HEVs). In order to increase the reliability of the drive system, this paper presents the design, analysis, and implementation of a cost effective sensorless control scheme for the extensively used brushless DC motors and alternators. Taking into consideration cost and ease of implementation, the commutation signals are obtained without the motor neutral voltage, multistage analog filters, A/D converters, and the complex digital phase shift (delay) circuit which are indispensable in the conventional sensorless control algorithms. In the proposed approach, instead of detecting the zero crossing point of the non-excited phase back EMF to the neutral voltage, the commutation signals are extracted directly from the specific average line to line voltages with simple RC circuits and comparators. As a result, the proposed control algorithm can be easily implemented with the low cost CPLDs or 8-bit micro-controllers. Because of the inherent low cost property, the proposed control algorithm is particularly suitable for cost sensitive products such as electric bikes, electric scooters, hybrid electric scooters, home appliances, automotive components, etc. Theoretical analysis and experimental results show that the proposed control algorithm exhibits satisfactory performance over a wide operation range in both motor and alternator operations
Starting Page	2116
Ending Page	2121
File Size	6069538
Page Count	6
File Format	PDF
ISBN	1424404967
DOI	10.1109/ISIE.2006.295900
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Commutation Brushless DC motors Alternators Costs Sensorless control Analog-digital conversion Hybrid electric vehicles DC motors Circuits Voltage
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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