Test arrangement for emulating the phase currents of an electric motor, and method for testing a power electronic control unit

A test arrangement to emulate phase currents of an electric motor to test a power electronic control unit that is equipped to drive an electric motor and is connectable to the test arrangement, the test arrangement comprising:

• an inductance emulator that simulates the electric motor as an electrical load for the control unit via a power electronic circuit, the inductance emulator acting as a current source with a phase current as output current;
• and
• a test device to influence a phase current of the inductance emulator as a function of an analysis of a quantity that depends on an output voltage of the control unit, the test device performing the analysis such that the output voltage is compared with multiple or three voltage ranges, and a respective range for a control variable of the phase current is specified depending on the voltage range in which the output voltage of the control unit is located, the control variable being a control voltage that influences the phase current.