Isolated 50 KW DC-DC Convertor- Blueberry 50
> 98%
CONVERSION EFFICIENCY
< 10ms
RESPONSE TIME
1 MW - 10 MW
SCALABLE CAPACITY
15 kV
DC INPUT RANGE
Introduction
Blueberry 50 is a precision-engineered, ultra-efficient, high-voltage DC-DC converter built around a Dual Active Bridge (DAB) core. It acts as the heart of modern Solid-State Transformer (SST) architecture, enabling compact, galvanically isolated, and highly modular power conversion for next-generation energy infrastructure.
With >99% peak efficiency enabled by SiC (Silicon Carbide) high-speed switches and optimized magnetic design, Blueberry 50 sets a new benchmark for compact, rugged, and high-density power delivery in harsh environments.
Design Philosophy
High Frequency = Smaller Size Operating at 50 kHz enables compact magnetics, reducing the system footprint and increasing dynamic response.
SiC Advantage Blueberry 50 uses SiC MOSFETs for ultra-fast switching, reduced losses, and high thermal headroom.
Modular Design for Scalability Multiple Blueberry 50 units can be paralleled to form MW-class DC output using digital current sharing and centralized coordination.
Where It Fits
As the DC-DC stage in modular SST systems
As a micro-inverter for BESS and EV chargers
As a DC link interface between high-voltage BESS and medium-voltage DC buses
As a building block for smart DC grids, ports, and rail electrification
Technical Specifications and Architecture Electrical Parameters
Core Technology: Dual Active Bridge (DAB)
Bidirectional Power Flow Enables energy to flow from source to load and vice versa, ideal for BESS, V2G, and regenerative charging.
Zero Voltage Switching (ZVS) Reduced switching losses, improved thermal stability, and lower EMI.
Soft Start & Load Balancing Smart load ramping and parallel sync across units allow seamless MW-class configuration.
Modular SST Integration
Each Blueberry 50 can function as a modular DC-DC stage within a solid-state transformer (SST), typically arranged as:
Stage 1: MV AC to plus 15KV DC
Stage 2: Blueberry 50-based DAB for isolation and DC voltage transformation
Stage 3: Final DC delivery to load/BESS/EV
This structure enables direct medium-voltage grid integration, removing bulky transformers and multi-stage converters.
Applications & Competitive Differentiation
Primary Applications
Megawatt EV Charging Systems Scalable building blocks for 1–10 MW marine and commercial vehicle charging.
Battery Energy Storage Systems (BESS) Interfaces DC BESS to downstream systems at controlled output.
Solid-State Transformer Systems Acts as the isolating and voltage conversion stage in high-efficiency SST deployments
Electric Ports, Airports, and Rail Terminals Reliable, rugged DC backbone for e-mobility hubs and digital substations.
Key Benefits
>99% Efficiency with SiC Switches
Maximizes energy throughput and minimizes thermal losses
40 kV Reinforced Isolation
Ensures safe operation in marine, aviation, and critical infrastructureContainer-Ready and Rack-Mountable
Flexible formats for integration into mobile or fixed platformsIEC 61850 / Modbus Integration
Fully digital communication ready for SCADA, EMS, and remote diagnosticsBuilt for Indian & Global Markets
Designed under MAKE IN INDIA, ready for export certifications, and CPRI testing
