TY - GEN
T1 - Accurate PWM Model of Multi-Updated L-filtered Voltage-Source Converters
AU - Wang, Yangwen
AU - Jin, Zheming
AU - Wang, Xiongfei
N1 - Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10
Y1 - 2020/10
N2 - The zero-order-hold (ZOH) model has been widely used to characterize the dynamic of single-updated or double-updated pulse width modulator (PWM). However, for the multi-updated PWM, the ZOH model does not consider the potential lost-of-comparison issue, which can lead to inaccurate modeling. In this paper, the comparator behavior of multi-updated PWM is analyzed. Based on the analytical results, an accurate PWM model is proposed. An L-filtered voltage source converter (VSC) with a multi-updated PWM-based digital controller is considered, whose current control loop is modeled by using both the proposed and the ZOH model for a comparative study. The results show that the proposed model can accurately predict the stability boundary.
AB - The zero-order-hold (ZOH) model has been widely used to characterize the dynamic of single-updated or double-updated pulse width modulator (PWM). However, for the multi-updated PWM, the ZOH model does not consider the potential lost-of-comparison issue, which can lead to inaccurate modeling. In this paper, the comparator behavior of multi-updated PWM is analyzed. Based on the analytical results, an accurate PWM model is proposed. An L-filtered voltage source converter (VSC) with a multi-updated PWM-based digital controller is considered, whose current control loop is modeled by using both the proposed and the ZOH model for a comparative study. The results show that the proposed model can accurately predict the stability boundary.
KW - comparator process
KW - current control
KW - quadruple-update PWM
KW - sampling process
UR - http://www.scopus.com/inward/record.url?scp=85097139489&partnerID=8YFLogxK
U2 - 10.1109/ECCE44975.2020.9236178
DO - 10.1109/ECCE44975.2020.9236178
M3 - Article in proceeding
AN - SCOPUS:85097139489
T3 - IEEE Energy Conversion Congress and Exposition
SP - 6205
EP - 6211
BT - ECCE 2020 - IEEE Energy Conversion Congress and Exposition
PB - IEEE
T2 - 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Y2 - 11 October 2020 through 15 October 2020
ER -