eprintid: 389
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/03/89
datestamp: 2023-11-09 15:16:01
lastmod: 2023-11-09 15:16:01
status_changed: 2023-11-09 15:14:27
type: conference_item
metadata_visibility: show
creators_name: Zulkifli, S.A.
creators_name: Karsit, M.N.
creators_name: Aziz, A.R.A.
title: Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
ispublished: pub
keywords: Automobile engines; Brushless DC motors; Combustion; Cylinders (shapes); Electric automobiles; Electric machinery; Engine cylinders; Engine pistons; Engines; Motion control; Motors; Permanent magnets; Secondary batteries; Smoke; Thermochemistry, Free-Piston Engine-Generator Starting; Linear Electric Generator; Permanent-Magnet Brushless Motor; Rectangular Commutation; Series-Hybrid Electric Vehicle, Electric generators
note: cited By 16; Conference of 2008 IEEE 2nd International Power and Energy Conference, PECon 2008 ; Conference Date: 1 December 2008 Through 3 December 2008; Conference Code:75682
abstract: Starting a free-piston linear engine-generator consists of reciprocating a freely moving piston-magnettranslator assembly between two oppositely placed engine cylinders to initiate combustion. To provide for the reciprocating force, the machine is operated as a brushless linear motor. A starting strategy is proposed which utilizes the air-spring quality of the engine cylinders prior to combustion: by energizing the coils with fixed DC voltage and by open-loop, rectangular commutation of injected current, sufficiently high motor force is produced to reciprocate the piston-magnet assembly in small amplitudes initially. Due to repeated compression-expansion of the engine cylinders and constant application of motoring force in the direction of natural bouncing motion, the translator's amplitude and compression pressure is expected to grow - due to mechanical resonance - to finally reach the required parameters for combustion. This work discusses the electrical aspects of the starting strategy, considers control possibilities, builds a model of the electrical subsystem and presents simulation and validation tests of the integrated model for starting investigation. © 2008 IEEE.
date: 2008
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-63049128041&doi=10.1109%2fPECON.2008.4762637&partnerID=40&md5=bbb817a4244def6578513997988006ff
id_number: 10.1109/PECON.2008.4762637
full_text_status: none
publication: PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference
place_of_pub: Johor Baharu
pagerange: 1086-1091
refereed: TRUE
isbn: 9781424424054
citation:   Zulkifli, S.A. and Karsit, M.N. and Aziz, A.R.A.  (2008) Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator.  In: UNSPECIFIED.