FEA Aided Design of Power Shunt Reactors with Discretely Distributed Air Gaps

OpenAlex İngilizce

In this paper, a Finite Element Analysis (FEA) aided design methodology for power shunt-reactors is proposed. The lack of simple and straightforward expressions for the calculation of gap-loss component and leakage inductance is the bottleneck of a fully analytical design procedure. To tackle with the difficulty arising from the calculation of gap-loss, the total air-gap is subdivided into several discretely-distributed air-gaps. This makes the gap-loss component negligibly small in comparison with the core loss. The preliminary design of the target reactor can therefore be achieved analytically by using an initial estimate of percentage leakage inductance. The preliminary design can then be tested and fine-tuned by using Maxwell 3D Magnetostatic Excitation and 2D Transient Sinusoidal Current Excitation tools,in the second phase of the recommended design procedure. The reactor under design can be optimized according to one of minimum Initial Cost, minimum Total Loss or minimum Present Value Cost design objectives, upon the request of the customer or the designer. Advantages and disadvantages of Maxwell 3D and 2D Transient Sinusoidal Current Excitation and Transient Sinusoidal Voltage Excitation analyses facilities are also discussed in the paper