Our modern dyno enables comprehensive assessment of the properties of drive units as well as measurement of each component of the solution separately. The construction of the test bench allows a complete 4Q analysis of the DUT, taking into account both electrical quantities (voltages, currents, powers, harmonics, d-q components) and physical quantities (speeds, torques, temperatures). The power supply system enables programmable simulation of various types of energy sources, including batteries, fuel cells. A wide range of rotational speeds (-12,000… + 12,000 rpm) and torques (-3500 Nm… +3500 Nm) allows comprehensive tests for various markets and applications