TY - GEN
T1 - Use of Stablilizing Ramp to Eliminate Limit Cycles in Converters with Power Semiconductor Filter
AU - FAN, Wing-to
AU - Chung, Henry Shu-hung
PY - 2015/9
Y1 - 2015/9
N2 - "Power Semiconductor Filter (PSF)" utilizes power semiconductor devices to eliminate the input current harmonics of switched-mode power converters. The concept is based on using a series pass device (SPD), which acts as a controllable current source, to program the input current waveform of the converter. The quiescent point of the SPD is stabilized at the boundary between the linear and saturation region by regulating the voltage across the SPD near its saturation voltage. Thus, the power loss of the SPD is minimized. Experiments reveal that the overall efficiency is found to be comparable with the conventional passive-type filter. This paper will firstly discuss possible occurrence of limit cycles under peak-voltage control to regulate the voltage across the SPD, and will then examine the use of a stabilizing ramp in the pulsewidth modulator to tackle such phenomenon. The effectiveness of the introduced stabilizing ramp will be exemplified experimentally on a 48W, 40-140V / 24V buck converter. Small-signal modeling, design, and analysis of the entire system will be presented.
AB - "Power Semiconductor Filter (PSF)" utilizes power semiconductor devices to eliminate the input current harmonics of switched-mode power converters. The concept is based on using a series pass device (SPD), which acts as a controllable current source, to program the input current waveform of the converter. The quiescent point of the SPD is stabilized at the boundary between the linear and saturation region by regulating the voltage across the SPD near its saturation voltage. Thus, the power loss of the SPD is minimized. Experiments reveal that the overall efficiency is found to be comparable with the conventional passive-type filter. This paper will firstly discuss possible occurrence of limit cycles under peak-voltage control to regulate the voltage across the SPD, and will then examine the use of a stabilizing ramp in the pulsewidth modulator to tackle such phenomenon. The effectiveness of the introduced stabilizing ramp will be exemplified experimentally on a 48W, 40-140V / 24V buck converter. Small-signal modeling, design, and analysis of the entire system will be presented.
KW - active filter
KW - DC-DC power conversion
KW - power electronics
KW - Power semiconductor filter
UR - http://www.scopus.com/inward/record.url?scp=84963537629&partnerID=8YFLogxK
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84963537629&origin=recordpage
U2 - 10.1109/ECCE.2015.7309858
DO - 10.1109/ECCE.2015.7309858
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781467371506
T3 - IEEE Energy Conversion Congress and Exposition
SP - 1413
EP - 1420
BT - 2015 IEEE Energy Conversion Congress and Exposition (ECCE)
PB - IEEE
T2 - 7th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2015)
Y2 - 20 September 2015 through 24 September 2015
ER -
