Protect SC UL Bi-Directional Energy Storage Power Converter


Protect SC is a bi-directional power converter from AEG Power Solutions with IGBT technology. The converter is the core element of any battery energy storage system as it charges and discharges batteries to store or provide power according to the application requirement (frequency control, peak shaving, energy shifting), or voltage control. Protect SC provides an outstanding conversion efficiency factor for both the charging and discharging phases. Thanks to its wide DC input range, it may be used with any state of the art battery technology currently available. The latest option available features a seamless transition between on-grid and off-grid mode. This extends the battery energy storage system’s usage beyond its core functions to back-up in the event of a black-out. The system can also be provided as a turnkey solution including battery and medium voltage transformer.

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Grid-friendly abierto

Conformity to grid norms; Unit operation in line with grid operation goals

Industrial-grade abierto

A robust design crafted for harsh environments and high requirements

Off-grid operation abierto

Operational without permanent connection to the public grid

Seamless transition abierto

Smooth conversion between off-grid and on-grid operation
  • Power up to 850 kVA
  • DC-voltage range 450 V – 1,000 V
  • Frequency 50 / 60 Hz
  • Battery technology Pb, Li, NiCd, VRF, etc.
  • Temperature range -20°C to +50°C

Storage Converter Functionality

Protect SC is based on the highly successful Protect PV solar inverter platform. A power stack with advanced design, measuring and control technology forms the heart of the Storage Converter. The IGBT based converter technology is inherently bi-directional and allows a four quadrant operation.

The converter provides an outstanding conversion efficiency factor during inverter and rectifier operation. The Storage Converter can be controlled by AEG PS’ own Local Management Unit (SC.LMU) or by other control systems. AEG PS’ Storage Converter supports multiple communication protocols such as Modbus TCP, Modbus RTU or RS485.

Remote control of the Storage Converter through an Energy Management System (EMS) is possible when integrated into a smart grid. Data recording of the Storage Converter is available 24/7 and is accessible anywhere in the world.

Specialized Distinction

The cabinets are only 600mm deep, thereby allowing for two rows of Protect SC.600 to be installed in a standard industrial container with space in between for personnel access. The modular design allows for easy expansion by the addition of supplementary Protect SC units. Due to the wide DC input range that is available, Protect SC also lends itself readily for use with any state of the art battery technology currently available.

Seamless On-Grid/Off-Grid Transition

The seamless transition option allows the inverter to transition smoothly from on-grid to off-grid and vice versa. It allows usage of energy storage similar to a traditional UPS as it transfers between off-grid and on-grid without interruption with only a limited distortion to the voltage.

BESS dedicated to peak shaving will serve at the same time as a back-up power system. Paralleling of several energy sources is possible and allows the implementation of a stable power supply to remote areas. The option also allows to black start an electrical power supply with several independent energy sources working together.

Key Features

  • Utility Scale Storage Converter
  • Highest efficiency for charging and discharging
  • Fully Grid Code Compliant: BDEW & others
  • Wide DC input range for various battery technologies
  • Black Start Capability
  • Seamless transition between on- and off-grid
  • Cabinet depth 600 mm
  • Initial Charge Function
  • Highest Power Density
  • Optional: Back-up power for control & communication
  • Modular Design