TY - JOUR
T1 - Adaptive Harmonic Conductance Control for Boost PFC Converters at Light Loads
AU - Zhu, Tianhua
AU - Zhao, Fangzhou
AU - Wang, Xiongfei
AU - Torrico-Bascope, Grover Victor
N1 - Publisher Copyright:
IEEE
PY - 2024/3/1
Y1 - 2024/3/1
N2 - Data center power systems tend to have more severe harmonic distortions when boost power factor correction (PFC) converters operate with light loads. The conventional harmonic damping method that increases the input conductance of PFC converter becomes less effective, due to the reverse blocking of the front-end diode rectifier in the PFC converter. To tackle this challenge, this article proposes an adaptive harmonic conductance control (AHCC) that can automatically achieve maximum harmonic mitigation for PFC converters at light loads, and no extra sensor is needed. In this approach, the critical value of harmonic conductance, beyond which the harmonic distortion is inversely amplified by the reverse blocking of diode rectifier, is identified first. Then, a method for online detection of the critical harmonic conductance is developed, which ensures the minimum harmonic distortion of PFC converters at light loads. Finally, the effectiveness of the AHCC approach is validated by experimental tests of 0.9 kW boost PFC converter modules under varying loads, distorted grid voltages, and paralleled operations.
AB - Data center power systems tend to have more severe harmonic distortions when boost power factor correction (PFC) converters operate with light loads. The conventional harmonic damping method that increases the input conductance of PFC converter becomes less effective, due to the reverse blocking of the front-end diode rectifier in the PFC converter. To tackle this challenge, this article proposes an adaptive harmonic conductance control (AHCC) that can automatically achieve maximum harmonic mitigation for PFC converters at light loads, and no extra sensor is needed. In this approach, the critical value of harmonic conductance, beyond which the harmonic distortion is inversely amplified by the reverse blocking of diode rectifier, is identified first. Then, a method for online detection of the critical harmonic conductance is developed, which ensures the minimum harmonic distortion of PFC converters at light loads. Finally, the effectiveness of the AHCC approach is validated by experimental tests of 0.9 kW boost PFC converter modules under varying loads, distorted grid voltages, and paralleled operations.
KW - Band-pass filters
KW - Boost power factor correction converter
KW - Harmonic analysis
KW - harmonic conductance
KW - harmonic distortion
KW - Harmonic distortion
KW - harmonic mitigation
KW - Inductors
KW - Power harmonic filters
KW - Resistance
KW - Voltage control
UR - http://www.scopus.com/inward/record.url?scp=85182361113&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3345936
DO - 10.1109/TPEL.2023.3345936
M3 - Journal article
AN - SCOPUS:85182361113
SN - 0885-8993
VL - 39
SP - 3175
EP - 3185
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 3
M1 - 10372115
ER -