Abstract
The loose coupling transformer, the core component of the rotary wireless excitation system, has a large leakage inductance due to the existence of a large gap, and the coupling coefficient cannot be effectively improved, thus limiting the improvement of the system efficiency. In order to solve this problem, firstly, the equivalent modeling and leakage inductance analysis of the rotary loosely coupled transformer are carried out, and the improved design is carried out according to the defects of common windings, and an improved shaft rotary coupler is proposed. The feasibility of this optimized structure was determined using Ansys/Maxwell simulation analysis software. The S-S resonance compensation scheme is designed, and the co-simulation with Simplorer and Maxwell is used to compare the coupling coefficient and transmission efficiency of the loosely coupled transformer before and after the improvement under the condition of large air gap, and the rationality of the proposed scheme is verified.
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