High-Efficiency Power Conversion for the Renewable Grid

 

The NOVA2000-213KTL-H0 is the core of ESI’s grid-forming energy storage solution — a high-performance, dual-stage architecture Power Conversion System (PCS) engineered for exceptional efficiency, reliability, and precision grid interaction.

 

Its high-efficiency design achieves up to 99 % maximum conversion efficiency, maintaining stable, low-harmonic operation under rapidly changing grid conditions. With fast dynamic response, intelligent regulation, and advanced protection, the NOVA2000-213KTL-H0 ensures consistent performance across all grid scenarios — from strong networks to weak or isolated systems.

 

Key Advantages
 

High-Efficiency Dual-Stage Architecture

• Achieves 99 % conversion efficiency and minimal electrical losses.

• Prevents reverse current flow into the battery and ensures stable active power output during High-Voltage Ride-Through (HVRT) events for faster grid-fault recovery.

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Modular and Reliable Design

• 99 % system availability through modular construction with fewer mission-critical parts.

• Each PCS independently manages one battery rack (≈ 213 kW of a 5.015 MWh system), isolating faults and maintaining system operation.

• Faulty modules can be replaced quickly, minimising downtime and maintenance disruption.

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Comprehensive Protection and Durability

• Rated IP66 for complete dust and water ingress protection, enabling outdoor deployment in harsh environments.

• Features an integrated Intelligent Active Braking Device for safe and controlled shutdown during transient or emergency events.

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Grid-Forming Capability

• Provides stable grid connection across the full Short-Circuit Ratio (SCR) range, with no disconnection or derating.

• Supports three stability enhancements — voltage, frequency, and phase angle — ensuring smooth and resilient system behaviour.

• Offers continuous service operation through multiple fault-ride-through modes (LVRT, HVRT, continuous HV/LVRT).

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Fast Black-Start and Seamless Transition

• Enables GW-level black-start capability, restoring grid power within minutes after outages.

• Supports 0 ms planned and 300 ms unplanned transitions between grid-connected and islanded modes to avoid blackout loss.

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Precision Power Regulation and Quality

• Delivers rapid voltage and frequency regulation in response to transient disturbances.

• Actively suppresses harmonic voltage distortion (THD < 1 %) for improved feed-in power quality.

• Includes Power Oscillation Damping (POD) to stabilise low-, medium-, and high-frequency oscillations and enhance grid stability.

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Overload and Parallel Operation

• Supports active and reactive power overload conditions.

• Enables parallel operation through coordinated and synchronous control, enhancing flexibility and total system capacity.

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