Norvento
Gridmaster
Converter

Power converters for Microgrids

NGM equipment supports the operation of on-grid, off-grid, and hybrid microgrids, offering proven capabilities that simplify the design, integration, and commissioning of all types of microgrids.

Reliability and functionality demonstrated through numerous projects over the past five years.

State-of-the-art converter and control system

 

The Norvento Gridmaster Converter (nGM) offers tested compatibility with all types of technologies and scenarios:

  • Conventional generation.
  • Large motors and transformers.
  • Renewable energy (solar, wind).
  • Electrolysers (systems with extremely high THDi).
  • Non-linear electromechanical loads: pumps, compressors.
  • Distribution networks and isolated systems (villages, farms, industries, islands).
  • Highly distorted systems with supply issues.

 

Modular and scalable from 50 kVA to 1 MVA

nGM units are available in 50-, 100-, and 200-kVA modules. Their hardware and software operate in perfect harmony when multiple units are connected in parallel, functioning as a single, larger unit and increasing the reliability of the entire system. This capability allows them to adapt to any DC or AC requirement, with or without a transformer.

 

nGM 200

nGM 400

nGM 600

nGM 800

Plug-and-play

On-grid and off-grid microgrids can be fully managed by a single nGM unit without the need for external controllers, thanks to the PMS control system, which is directly integrated into the nGM enclosure.

Autonomous Microgrid Control

Our control systems feature a comprehensive communications library compatible with devices from various manufacturers.

The multiple nGM interfaces facilitate the integration of energy storage into micro-areas and electrical installations, providing an almost ready-to-use solution.

All-in-one energy conversion and microgrid control with maximum reliability and cutting-edge features

The nGM is a comprehensive solution based on power electronics and supported by energy storage. The nGM is a single unit that integrates microgrid management and control capabilities, a certified grid-following operating mode, a state-of-the-art grid-forming mode, active harmonic filtering, and a wide range of highly configurable ancillary services.

nGM units include modern, highly configurable protection systems that are designed in accordance with the most relevant international standards.

Our systems incorporate remote monitoring utilities for the converter and the microgrid via web interfaces with graphics, historical data, and multiple types of logs.

The nGM is available with batteries and as a containerized solution (nBESS, 20/40-foot containers) or as a skid-mounted solution.

AC

  • Rated power: 50 kV to 800 kVA, via parallel-connectable modules.
  • Rated voltage: 400 V / 480 V.
  • Rated frequency: 50 Hz / 60 Hz.
  • Maximum protection for batteries via galvanic isolation between DC and AC circuits.
  • Integrated contactor and circuit breaker.

DC

  • DC voltage range: 540–830 V.
  • Integrated contactor, fuses, pre-charge, and disconnect switch.
  • Communication with BMS from various battery manufacturers.

Operating range, efficiency, and power consumption

  • Continuous operation at rated power and 40 °C ambient temperature.
  • European weighted efficiency: charge 96.46%, discharge 95.47%.
  • Standby power consumption: 80 W.
  • Ultracapacitors that allow operation for several minutes without power supply.

Cooling method

Power venting

Interface with other elements of the micro-network/installation

Modbus, CAN, Ethernet

Monitoring

Ethernet, Web, App

Our GFM functionality solves problems today that are still the subject of discussion and study in leading academic and industrial forums.

  • Fully parallelizable capacity.
  • Simultaneous (self-synchronized) black start of different systems in parallel.
  • Configurable inertia constant (0.02 s < H < 8 s).
  • Configurable droop (0–10%).
  • Zenith and Nadir management.
  • Passivity range exceeding 3500 Hz.
  • Exceptional waveform quality (THDu < 0.5%).
  • Compatibility with loads with high harmonic distortion.
  • Control of power-up transients.
  • Control of open-circuit short circuits, without disconnection, providing 2 PU of transient current. Ultra-fast fault current (1–3 ms).
  • Time-programmable short-circuit curve.
  • Advanced modes: UPS, programmable power supply.
  • “On-the-fly” transition between GFW ⇆ GFM modes, without zero-crossing.

 

  • Operating mode certified to European standards.
  • Maximum precision in active and reactive power control.
  • Wide range of ancillary services.
  • Ideal for grids with SCR > 5.
  • On-the-fly transition between GFW and GFM modes, without zero-crossing.
  • Frequency and voltage support during normal operation and voltage sags.
  • FRT grid code compliance strategies: UVRT, OVRT.
  • Fast and precise current injection, configurable in nature (active/reactive).
  • Hybrid mode with active correction of voltage/current harmonics and imbalances.
  • Compatible with nonlinear loads.
  • Grid ancillary services and flexibility markets.
  • Certified active anti-islanding protection.

  • State of Charge (SOC) Management.
  • Battery calibration.
  • Peak shaving.
  • Consumption curve optimization (energy arbitrage).
  • Programmable Power Scheduling.
  • Renewable energy maximization.
  • Immediate connection to generator sets.
  • Alarm management.
  • On-grid ⇆ off-grid transitions.
  • Web-based monitoring of the entire microgrid.

  • Safety and EMC: IEC 62477-1:2022 + CORR:2024 and IEC 61000.
  • Overvoltage protection: UNE 217001 in combination with the Norvento nAnalyzer meter.
  • CISPR 11 + AMD1 + AMD2:2019.
  • NTS (SEPE, SENP).
  • UNE-EN 50549-2:2019.
  • UNE 217002:2020.

Examples of use

Industrial and commercial installations with renewable generation.

Installations that require a reliable and high-capacity supply of electricity.

End-of-line electrical installations with supply quality issues or no possibility of increased contracted power.

Ejemplos de uso

Norvento Gridmaster Converter (nGM) catalogue

Download Catalogue and data sheet