Theoretical Consideration of the Long-length Primary Loop used in SCMaglev's WPT System

Abstract

The primary loop of the SCMaglev's WPT system has several distinctive features compared to other WPT systems. These include its length, order of several kilometers, its installation position close to the concrete roadbed and its working frequency near 10kHz. There were almost no findings and experiences regarding electric constants required for designing the electric resonance, theoretical considerations have been conducted to determine the constants, inductance and stray capacitance. The values obtained can be calculated using simplified methods and are close to the results obtained from the field test.