MVDC MMC Converter – GridMax MV
Modular Multilevel Converter for efficient medium voltage DC grid interconnection.
> 98%
CONVERSION EFFICIENCY
< 10ms
RESPONSE TIME
1 MW - 10 MW
SCALABLE CAPACITY
12 kV - 20 kV
DC OUTPUT RANGE
TRANSFORMATION
Direct-to-Grid Transformation
GridMax MV represents a breakthrough in power electronics, operating as an advanced solid-state AC to DC converter that interfaces directly with the 11 kV medium-voltage grid. By utilizing Modular Multilevel Converter (MMC) architecture—globally adopted for HVDC systems—it delivers a regulated 15 kV DC output without the need for bulky step-down transformers or secondary rectification stages, significantly reducing physical footprint and installation complexity.
This architecture ensures exceptional performance, achieving over 98% conversion efficiency across a wide load range while maintaining low harmonics through built-in mitigation. The system is designed for high-speed dynamics, boasting a sub-10 ms response time to grid fluctuations, making it an ideal solution for megawatt-scale infrastructure where stability and speed are paramount.
ARCHITECTURE
Advanced Technical Architecture
Built for scalability, the GridMax MV features a modular design that allows for expansion from 1 MW to 10 MW using SiC-based high-speed switches. Its robust technical framework includes redundant submodules for enhanced fault tolerance and supports both air and liquid cooling options, ensuring reliable operation even during intense load cycles.
The system is housed in containerized designs (20ft/40ft ISO) for plug-and-play deployment, integrating essential safety mechanisms such as internal arc fault detection and auto-isolation. With configurable DC output capability (12–20 kV) and comprehensive protection against surges and overloads, it provides a resilient power backbone for critical industrial applications.
INTEGRATION
Seamless System Integration
GridMax MV is engineered for superior interoperability, serving as a versatile interface for diverse energy systems including EV chargers, battery storage (BESS), and hydrogen electrolyzers. It connects directly to multi-output DC dispensers and supports various battery chemistries like Li-ion and LTO, functioning effectively as a solid-state transformer for next-generation digitized substations.
The platform is managed via a sophisticated FPGA/ARM-based digital control system that supports predictive diagnostics and smart synchronization. Capable of both grid-forming and grid-following modes, it enables dynamic interaction between fleets and the utility grid, supporting advanced energy balancing protocols like Vehicle-to-Grid (V2G).
VERSATALITY
Strategic Industrial Applications
This converter is purpose-built for high-demand use cases such as powering electric tugboats, bus depots, and large-scale PEM electrolyzers for green hydrogen production. Its ability to provide accurate DC output control allows it to act as a reliable medium-voltage DC backbone, facilitating rapid megawatt-level charging and industrial electrification.
Beyond its technical capabilities, GridMax MV offers significant economic advantages by lowering installation and maintenance costs through its 100% solid-state design. Fully compliant with "Make in India" and Green Port initiatives, the system is ready for CPRI/Type testing and export certification, leveraging best-in-class global practices for modern energy infrastructure.
