Blackout Simulators / High-Power AC Sources

BeXema develops powerful three-phase AC sources with outputs of up to 2,500kVA per unit, specifically designed for precise and flexible grid simulations. Voltages, currents, frequencies, phase angles, and even complex waveforms can be freely programmed. Thanks to galvanic isolation from the supply network and short control response times of less than 2ms, the devices are particularly suited for dynamic voltage testing, such as the simulation of grid faults, blackouts, or fault ride-through (FRT) scenarios. Realistic island grid operation can also be reliably simulated. Integrated sequencers enable automated execution of customized test patterns, controlled via modern interfaces such as Ethernet, Profibus, or CAN.

With this combination of high power, precise control, and versatile configurability, BeXema’s AC sources are ideal tools for demanding test tasks in laboratories, technical centers, and series production. They meet the highest requirements of modern industrial and power electronics applications – from grid simulation and component development to final testing in production environments.

Main Features & Benefits

Emulated grids from 10V to 600VAC and up to ±4,000 A current
High power output up to 2,500kVA per unit
Fast response times (<2ms) through real-time control
Galvanic isolation – stabilized outputs independent of the mains supply
Sequence generation for customized test profiles
Flexible integration into test systems via professional communication interfaces

Application Areas

Simulation of power outages (blackouts) and FRTs (fault ride-through scenarios)
Development and testing of electrical components in laboratories, technical centers, and production environments
Emulation of power supply networks (e.g., 110V/60Hz US standard, 400Hz aircraft power systems)
Integration into AC-grid emulators for dynamic device testing

Versatile Applications

Ideal for simulating global grid standards (e.g., 230V/50Hz in Germany, 120V/60Hz in the USA)
Essential for testing AC/DC-converters, battery storage systems, and online UPS devices
Enables modular scaling and integration into multi-megawatt grid systems

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