An electrical load emulator, ELE, for an inverter under test, IUT, wherein an IUT output voltage V IUT at an IUT output terminal is configured to take a plurality of IUT voltage states, separated by IUT rising and falling edges, and wherein an ELE output voltage at an ELE output terminal is configured to take a plurality of ELE voltage states, separated by ELE rising and falling edges, and wherein to each IUT voltage state corresponds at least one ELE voltage state, and wherein the ELE comprises: - a current sensor configured to measure an IUT output current I IUT, - a coupling filter for connecting the ELE to the IUT, - a voltage sensing unit configured to sense the IUT output voltage V IUT, - a control unit, wherein the electrical load emulator, ELE, is characterised in that the control unit is configured to: ∘ determine a reference current I REF corresponding to an emulated electrical load based on the sensed IUT output voltage V IUT, ∘ compare the reference current I REF to the measured IUT output current I IUT, - if I REF is equal to I IUT, the control unit is configured to control the ELE output voltage to synchronously follow the IUT output voltage, such that each of the IUT rising and/or falling edge between two subsequent IUT voltage states is followed by a corresponding ELE rising and/or falling edge between two subsequent ELE voltage states, respectively, - if I REF is higher than I IUT, the control unit is configured to delay the following ELE rising edge with respect to its corresponding IUT rising edge by a rising edge time delay, - if I REF is lower than I IUT, the control unit is configured to delay the following ELE falling edge with respect to its corresponding IUT falling edge by a falling edge time delay. - a current sensor configured to measure an IUT output current I IUT, - a coupling filter for connecting the ELE to the IUT, - a voltage sensing unit configured to sense the IUT output voltage V IUT, - a control unit, wherein the electrical load emulator, ELE, is characterised in that the control unit is configured to: ∘ determine a reference current I REF corresponding to an emulated electrical load based on the sensed IUT output voltage V IUT, ∘ compare the reference current I REF to the measured IUT output current I IUT, ∘ determine a reference current I REF corresponding to an emulated electrical load based on the sensed IUT output voltage V IUT, ∘ compare the reference current I REF to the measured IUT output current I IUT, - if I REF is equal to I IUT, the control unit is configured to control the ELE output voltage to synchronously follow the IUT output voltage, such that each of the IUT rising and/or falling edge between two subsequent IUT voltage states is followed by a corresponding ELE rising and/or falling edge between two subsequent ELE voltage states, respectively, - if I REF is higher than I IUT, the control unit is configured to delay the following ELE rising edge with respect to its corresponding IUT rising edge by a rising edge time delay, - if I REF is lower than I IUT, the control unit is configured to delay the following ELE falling edge with respect to its corresponding IUT falling edge by a falling edge time delay.