A Simple Hysteretic Energy Harvesting Method for Nonneutral AC Switches in Load Automation

Karthik, A and Umanand, Loganathan (2016) A Simple Hysteretic Energy Harvesting Method for Nonneutral AC Switches in Load Automation. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, 31 (7). pp. 4906-4915.

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Abstract

This paper presents a simple hysteretic method to obtain the energy required to operate the gate-drive, sensors, and other circuits within nonneutral ac switches intended for use in load automated buildings. The proposed method features a switch-mode low part-count self-powered MOSFET ac switch that achieves efficiency and load current THD figures comparable to those of an externally gate-driven switch built using similar MOSFETS. The fundamental operation of the method is explained in detail, followed by the modifications required for practical implementation. Certain design rules that allow the method to accommodate a wide range of single-phase loads from 10 VA to 1 kVA are discussed, along with an efficiency enhancement feature based on inherent MOSFET characteristics. The limitations and side effects of the method are also mentioned according to their levels of severity. Finally, experimental results obtained using a prototype sensor switch are presented, along with a performance comparison of the prototype with an externally gate-driven MOSFET switch.

Item Type:	Journal Article
Publication:	IEEE TRANSACTIONS ON POWER ELECTRONICS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords:	Energy harvesting; floating gate-drive; load automation; self-powered switch
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	31 Mar 2016 04:07
Last Modified:	31 Mar 2016 04:07
URI:	http://eprints.iisc.ac.in/id/eprint/53437

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