TY - JOUR
T1 - A novel method to investigate the power generation characteristics of linear generator in full frequency operation range applied to opposed-piston free-piston engine generator _ Simulation and test results
AU - Wu, Limin
AU - Feng, Huihua
AU - Jia, Boru
AU - Tang, Zhifeng
AU - Yan, Xiaodong
AU - Wang, Wei
N1 - Publisher Copyright:
© 2022
PY - 2022/9/1
Y1 - 2022/9/1
N2 - The opposed-piston free piston engine generator (FPEG) has unique advantages because of its symmetrical structure and the cancellation of cylinder head. In this paper, a novel method which combines low frequency operation test with high frequency operation simulation is proposed to study the generation performance of linear generator in the full frequency operation range. The influences of operation frequency, stroke, power angle and load current on the generation performance of linear generator are analyzed. The results show that the resistive load can not efficiently absorb the electric energy generated by the linear machine, the system shows a small increase in power generation efficiency at high operation frequency, but exhibits a rapid upward trend in low-speed condition. When the generator operates under the rated condition of the opposed-piston FPEG, the generating power can reach 5 kW, and the generating efficiency is higher than 80%. Increasing the operation frequency can further improve the generating power of the generator due to the increasing energy input.
AB - The opposed-piston free piston engine generator (FPEG) has unique advantages because of its symmetrical structure and the cancellation of cylinder head. In this paper, a novel method which combines low frequency operation test with high frequency operation simulation is proposed to study the generation performance of linear generator in the full frequency operation range. The influences of operation frequency, stroke, power angle and load current on the generation performance of linear generator are analyzed. The results show that the resistive load can not efficiently absorb the electric energy generated by the linear machine, the system shows a small increase in power generation efficiency at high operation frequency, but exhibits a rapid upward trend in low-speed condition. When the generator operates under the rated condition of the opposed-piston FPEG, the generating power can reach 5 kW, and the generating efficiency is higher than 80%. Increasing the operation frequency can further improve the generating power of the generator due to the increasing energy input.
KW - Electromagnetic finite element model
KW - Free-piston engine generator
KW - Full frequency operation range
KW - Opposed-piston
KW - Power generation
UR - http://www.scopus.com/inward/record.url?scp=85131405696&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2022.124235
DO - 10.1016/j.energy.2022.124235
M3 - Article
AN - SCOPUS:85131405696
SN - 0360-5442
VL - 254
JO - Energy
JF - Energy
M1 - 124235
ER -
