利用开关控制电容与双相移控制提升双向感应功率传输的输出稳定性

Bidirectional inductive power transfer (BIPT) systems provide efficient and contactless power transfer for electric vehicles and other applications. However, practical challenges such as parking misalignment, battery state of charge (SoC) variations, and constraints imposed by the SAE J2954 standard limit their reliability, especially during vehicle-to-grid operation. Existing methods focus mainly on unidirectional charging and often assume ideal alignment, overlooking their applicability to practical operation. This paper proposes a novel BIPT system combining switching-controlled capacitors (SCC) and dualphase-shift (DPS) control to address these challenges. SCC compensates for reactance variations via resonant parameter tuning, while DPS achieves wide input-output gain control to accommodate SoC variations. The integrated approach ensures output characteristics and reliable performance under varying clearance distances and load conditions. A 6.6-kW prototype system was developed and experimentally validated, demonstrating its feasibility and robustness for practical applications.