Core Loss Calculation of Anode Saturable Reactor in Damping Oscillation State Based on J-A Theory
Meng Xiao, Yuxiang Zuo, Yang Li, Jianguo Zhu, Yongjian Li, Lihua Zhu
Abstract
Anode saturable reactor (ASR) is an important part of the HVDC converter valve. Due to the surge current during the transient processes of thyristors, a sharp increase will occur in core losses and over temperature-rising of the reactor, which may cause premature failure and is difficult to estimate in the design optimization of the reactors. To investigate the single core loss of anode saturable reactor, during such operating conditions, this paper proposes an approach to calculate the core loss from the Jiles-Atherton (J-A) dynamic hysteresis model, which can be applied for various operating conditions with good accuracy. Finally, the model is incorporated into the finite element method (FEM) to investigate the core loss distribution of the iron core during the oscillation process at off-state.