Abstract
The damping and screening system (DSS) is a key structure of the hybrid high-temperature superconducting generator. In this paper, an analytical method was introduced to analyze the performance of the DSS with different time constants on both the d-axis and the q-axis of the generator. First, the distribution of the eddy currents in the DSS was analyzed, and the calculation of the equivalent resistance, inductance, and time constant of the DSS was considered. Then, to analyze the performance of the nonuniform DSS (NDSS), a splitting method was introduced. Using the new method, parameters of the damping part, screening part, and supplementing part of the NDSS were calculated, respectively. At last, the screening and damping performances of the NDSS were evaluated. The finite-element method was also employed to verify the analytical results. An experimental platform was built up to test the screening ratio and verify the simulating results.
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