Regenerative AC Power Supply

Source-Load Power Supply with 4-Quadrant Operation Capability

NEXUS Regenerative AC Power Supply combines both AC power source and regenerative electronic load in one system. The regenerative load technology allows the system to recover the current up to 100% back to grid with a regenerative efficiency of 91% the saves considerably energy testing cost.

High Power and Technical Ratings

Maximum voltage up to 600V, and scalable up to 4MVA AC output power by parallel expansion though optical fiver communication without compromising precision, accuracy, dynamics, and response.

High-Power Density and Compact Footprint

NEXUS Regenerative AC Power Supply achieves high power density at 173kVA per cubic meter (cbm) thanks to the advanced power electronics technology and compact footprint. NEXUS's high power density feature optimizes the system utilization by 54% and reduces weight by 52% compared to conventional solutions. Laboratories and production lines can benefit from NEXUS as a powerful solution with minimal footprint to upscale their productivity per area.

Scalability at both Modular and Rack Level, Redundancy and Low Maintenance Features

NEXUS Regenerative AC Power Supply features modular system architecture with fault redundancy capability. In the event of equipment failure, redundant backup components quickly take over, ensuring controllable repair time and maximum protection of production efficiency.

The system is unscalable at both modular and rack level. Users can achieve higher rated power to meet evolving test specifications either by adding more racks to their existing system or by incorporating more modules with in the rack. The unique modular and rack-level scalability addresses long-term value and serviceability waiving the necessity of repurchase.

Grid-Tied Device Validation: Anti-Islanding Protection Testing Capability

NEXUS‘s comprehensive grid emulation capability highlights its advantages in validating grid-tied devices in renewable energy sector with its built-in anti-islanding protection testing capability. The exceptional technical specifications of NEXUS's capability covers anti-islanding protections for miscellaneous and ranges of products including energy storage systems (ESS), power conversion systems (PCS), microgrids, on-board chargers (OBC/BOBC), and uninterruptible power supplies (UPS).

Linear & Non-Linear Load Emulation

The NEXUS simulates both non-linear (2-24 pulse, adjustable crest factor) and linear loads (12 RLC models) for comprehensive testing. It regenerates power to the grid, expanding capacity without infrastructure upgrades. Ideal for grid-tied and off-grid devices (BOBC, UPS, PCS), simplifying ATE setups for V2G, V2L, and V2H testing.

Comprehensive Abnormal Grid Condition Emulation with Versatile Programming and Built-in Recipes

The NEXUS AC Power Supply comprehensively simulates grid anomalies with adjustable frequency, voltage, phase, and harmonic distortion (up to 50th order, 27 waveforms). Soft start minimizes inrush current. It emulates diverse loads using 12 RLC models, and performs 1ms interruption tests. Advanced programming modes (STEP, LIST, PULSE) and HVRT/LVRT testing with adjustable phase angles (phase control capability) with simultaneous control and 0.1° resolution for each of the 3-phase.

Built-in waveforms and recipes:

• IEC61000-4-11 Voltage Interrupt 90° @ Class 2 / 50Hz
• IEC61000-4-13 Non-Triplen Odd Harmonics @ Class 3 / 50Hz
• IEC61000-4-14 +20% -30% Voltage Fluctuation 0.2s @ Class 3 / 50Hz
• IEC61000-4-17 DC Ripple Voltage @ Class 3
• IEC61000-4-27 Voltage Unbalance @ Class 3
• IEC61000-4-28 Frequency Variation @ Class 4
• IEC61000-4-29 DC Voltage Interruption @ Class X