Barletta Apparecchi Scientifici Srl
MM - Microgrid Manager series
MM Microgrid Manager series
MM Microgrid Manager series

MM series Data Sheet
Click to view in PDF format  (327 KB)

  • Power: 7.5kVA-200kVA
  • Input:
    • AC Voltage: Rated 3x400V+Neutral+Earth
    • Voltage range: +15% / -20 %
    • AC Current: 10A-290Arms
    • Frequency: 50/60Hz
    • Power Factor: Controllable -1/1 (capacitive/inductive)
    • Efficiency at full load >92%
    • Overload 125% for 10 min / 150% for 60 s
  • DC Outputs:
    • DC Current: 3 independent channels 0-230A (per channel)
    • DC Current 1 parallelized channel 0-690A
    • AC Current: 10A-290Arms
    • DC Voltage 0-750V
    • Minimum voltage at rated power 220V
  User interface and communications:
  • Local 3.2" Touchscreen
  • Control port:
    • 3 analog inputs +/-10V
    • 3 analog outputs 0-10V
    • 5 digital inputs
    • 3 relay outputs
    • 1 Emergency stop
  • Remote interface: Modbus/TCP
  • Windows 7/XP application for remote operation and data acquisition
  • Options:
    • RS 232
    • IEC61850
    • RS485

The MicroGrid Manager is an off-grid inverter, a bidirectional converter that charges and discharges batteries from or to the Electrical Grid. It also allows the transition from island mode (off-grid) to a connected mode (grid-tied) and vice versa.

Functional description
When in Connected Mode, the converter follows active and reactive setpoints allowing the energy balance. In Island Mode, the converter fixes the grid requirements: voltage and frequency.
The control could perform additional functions, as:
- Microgrid management: management of solar and wind converters, demand management, ...
- Anti-islanding algorithm: allowing the transition from Connected to Island and vice versa

Back-to-Back topology
Each cabinet integrates VSC modules and DSP control boards equipped with all necessary power components, electrical protections, auxiliary electronics and security elements. The power electronics is based on a back to back topology formed by 2 voltage source converters. It is a multifunctional converter that allows a wide range of applications.

Active and reactive power control
The converter can control the injection or consumption of active and reactive power to the grid in all modes.

Some applications and features:
The converter is composed by an Active Rectifier, a DC bus stage, and 3 independent IGBT half-bridge branches with output filters and sensors. Each DC output channel can be regulated independently or they can be parallelized for high current applications. The following operating modes are included in the standard version and can be selected by the user:

  • Decentralized Storage System to Increase Self-Consumption
  • Reduce Investment in Power System Infrastructure
  • Flatten the Demand and the Load Curves
  • Control Capability for QoS: THDv and Freq
  • Emergency Power Supply
  • Grid-to-Island and Island-to-Grid Management
  • Extended Life Batteries
  • Managing of second life batteries


"Increasing the Hosting Capacity of Distributed Energy Resources Using Storage and Communication", Nicholas Etherden, Doctoral Thesis, Luleň University of Technology, 2014.

"Converter induced resonances in microgrids due to high harmonic distortion" N. Etherden, J.M. Fernandez et al. ICREPQ'14 Cˇrdoba.'14/317.14-Etherden.pdf


Model      Description
MM7.5  6.75kW  –  10A
MM10  9kW  –  15A
MM15  13.5kW  –  20A
MM20  18kW  –  30A
MM30  27kW  –  40A
MM40  36kW  –  55A
MM50  45kW  –  70A
MM60  54kW  –  85A
MM80  72kW  –  115A
MM100  90kW  –  145A
MM120  108kW  –  175A
MM160  128kW  –  230A
MM200  160kW  –  290A