Mi-BEAM Power Rack Series: High-Power Bidirectional DC

The Sorensen™ Mi-BEAM Power Rack Series integrates up to seven Mi-BEAM power modules in a 42U cabinet to provide a scalable, high-power bidirectional DC source and regenerative electronic-load platform. A fully populated rack delivers up to 262.5 kW, supports voltage configurations from 80 V to 2,000 V, and provides current up to 7,000 A per rack. Parallel-rack systems scale up to 8.6 MW.* The modular building-block architecture supports future expansion and simplifies sparing and maintenance, while intelligent controls support sequencing, constant-power operation, independent voltage, current and power limits, and save/recall of system settings.

Key Features

• Up to 262.5 kW in a single 42U rack cabinet
  
• Supports up to seven Mi-BEAM power modules per rack
  
• Parallel-rack configurations scalable up to 8.6 MW*
  
• Supports parallel operation across up to 33 racks with the required controllers
  
• Mi-BEAM modules can operate in parallel-output or individual-output configurations
  
• Optional isolation relay chassis provides output isolation and polarity detection for supported configurations
  
• Integrated safety features include rack-level and branch circuit breakers and Emergency Power Off (EPO). The rack includes CE marking and NRTL certification as standard.
  
• Three-phase AC input: 323–528 VAC
  
• Modular architecture simplifies sparing and maintenance
  
• Rack cabinet includes casters, forklift pockets and lifting eyes
  
• Ethernet (LXI), isolated analog, optional IEEE‑488

Standard Modes of Operation

• Bidirectional DC source and regenerative electronic-load operation
  
• Constant-current (CC), constant-voltage (CV), constant-power (CP) and constant-resistance (CR) operating modes, with combined-mode support
  
• Battery Simulation and Battery Test charge/discharge modes
  
• Photovoltaic and solar-array simulation
•  Drivetrain and drive-cycle testing with programmable V-I characteristics

Applications

The Mi‑BEAM Power Rack Series is designed for today’s complex applications, including data centers, microgrids, energy storage, automotive, industrial, and aerospace markets supporting a wide range of high‑power test requirements.

• Battery Simulation: Emulates battery behavior for testing energy storage systems and battery‑powered devices.
• Battery Cycling / Testing: Performs charge and discharge testing for validation and performance evaluation of energy storage systems.
• Electric Powertrain Testing: Supports testing of electric powertrain systems including motors, inverters, and related components.
• Fuel Cell Testing: Provides programmable DC source and load capability for fuel cell testing.
• Solar Inverter Testing: Enables testing of inverter performance under controlled DC input conditions.
• PV Simulation: Simulates photovoltaic output for testing solar inverters and related systems.
• Industrial Automation: Supports power testing and validation in industrial environments.
• Data Centers: Designed for power testing and validation in data center applications.
• Defense, Military & Aerospace: Supports testing requirements for aerospace and defense applications.
• Microgrids: Enables validation and testing of microgrid and distributed energy systems.

The Mi-BEAM Power Rack is designed for high-power battery and energy-storage testing, electric-powertrain validation, grid-connected power conversion, solar inverter and PV simulation, fuel-cell testing, microgrids, industrial automation, defense and aerospace systems, and AI data center power validation. Its modular architecture supports programmable source, battery-emulation and regenerative-load testing in applications that require high power density, precise control, bidirectional operation and room for future expansion.

Safety and Serviceability

• Rack-level circuit breaker and branch circuit breakers for individual Mi-BEAM modules
  
• Emergency Power Off (EPO)
  
• CE marking and NRTL certification
  
• Optional isolation relay chassis with output isolation and polarity detection for supported configurations
• Modular power building blocks simplify replacement, sparing and system expansion

Electrical and Mechanical Summary

• Efficiency: 95% typical at full load
  
• Cooling: Forced-air cooling using internal power-module fans and additional rack fans
  
• Operating temperature: 0 °C to +40 °C (+32 °F to +104 °F)
  
• Rack dimensions: 24 in W × 42 in D × 83.25 in H (61 × 107 × 211.4 cm)
  
• Rack weight: Up to approximately 1,700 lb (771 kg), fully loaded with seven Mi-BEAM modules

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