Preen ADG+ Series

High-power DC test applications — EV motor testing, DC/DC converter validation, energy storage charge/discharge cycling, and inverter qualification — routinely demand more power than a single-unit bench supply can deliver, and scaling that power without losing precision or programmability is where many DC supply platforms fall short. Preen's ADG+ series addresses this directly: single-unit output from 30kW to 300kW, with master/slave parallel operation across up to 6 units extending total system output to 1800kW without needing a separate high-power architecture.

Beyond raw power scaling, the ADG+ series folds in a capability that's often a separate piece of equipment entirely: built-in Solar Array Simulation (SAS) and EN50530-mode I-V curve generation. This lets the same platform generate the current-voltage curves needed for PV inverter and MPPT (maximum power point tracking) efficiency testing without an external solar array simulator controller — relevant for labs qualifying inverters against multiple test standards without maintaining separate dedicated SAS hardware.

Output voltage spans 0-40V up to 0-2000V depending on model, with current up to 2500A, covering both low-voltage/high-current applications (such as EV motor and battery testing) and high-voltage, lower-current use cases within the same series. Voltage ripple is held below 0.05%, and efficiency reaches up to 90% at maximum power — both meaningful at this power scale, where even a small percentage of inefficiency represents a genuinely large amount of wasted energy and heat that needs to be managed.

A 7-inch touch screen HMI, remote sensing for accurate voltage regulation at the load, and an emergency stop button round out the control and safety features expected on equipment operating at this power and current level.