Battery Power Control Strategy for Intermittent Renewable Energy Integrated Modular Multilevel Converter-Based High-Voltage Direct Current Network

Modular multilevel converters (MMC) play a dominant role in integrating remotely located renewable energy resources (RER) over the high-voltage direct current (HVDC) transmission network. The fault ride-through capabilities of MMC-HVDC network during low-voltage faults and power fluctuation due to RER intermittency are major obstacles effective integration energy. In response, this article proposes local voltage-based combined battery control scheme for PV-wind-battery connected system regulate HVDC-link voltage at point common coupling alternating grids reduce intermittent fluctuation. proposed technique removes dynamic braking resistor from smoothly integrates without active reduction under faults. Symmetrical unsymmetrical have been conducted validate effectiveness mitigating surplus HVDC-link. Additionally, wind speed, solar radiation, temperature changed confirm improved performance management system. complete systems simulated tested real-time digital simulator (RTDS) using dSPACE-based controller hardware loop setup.