Half-Bridge Model for High Voltage Direct Current (HVDC) Transmission

I have independently designed and implemented a half-bridge model for high voltage direct current (HVDC) transmission using constant current control. The implementation builds upon a conventional 12-pulse HVDC framework, where I substituted standard b-phase and c-phase transformers with phase-shifting transformers. This modification substantially mitigates 11th and 13th harmonic distortions through phase-angle adjustments in the control algorithm, enhancing both transmission efficiency and system stability. Multiple experimental simulations were conducted to evaluate various circuit configurations and control strategies, with validation confirming the feasibility and superiority of this approach. The control logic employs PI regulators to maintain DC current stability under dynamic load conditions. I believe this technology holds significant application potential in power transmission/distribution systems and renewable energy integration, offering substantial operational benefits and convenience for industrial and residential power systems.