Intepro Systems has announced the Ainuo ANRGS(F) series regenerative grid simulator for AC, DC and AC+DC testing in power ranges from 3 kVA to 120 kVA. The programmable platform uses SWPM and FPGA-based digital processing, supports four-quadrant operation and is intended for testing power supplies, UPS systems, inverters, EV power conversion and battery systems while simulating grid disturbances such as sags, surges, transients and harmonics.