Hi David,
To generate constant three-phase harmonic currents in Simulink using the three-phase constant current block, you need to employ a different approach since the block itself does not have a built-in feature to set the frequency for harmonics, you can achieve this by creating custom harmonic current sources using mathematical functions within Simulink.Begin by creating a Sine Wave block for the fundamental frequency (50Hz or 60Hz depending on your system) to serve as the base current waveform. Then, use a Math Function block to generate the 7th harmonic of the fundamental frequency and achieve this by multiplying the amplitude of the fundamental waveform by the desired harmonic factor (in this case, 5A for the 7th harmonic). Afterwards, create three-phase currents, introduce phase shifts of 120 degrees between the phases. You can use Delay blocks to achieve the required phase differences and combine the three-phase harmonic currents using Mux blocks to create a three-phase harmonic current source. Finally, run the simulation to observe the generated three-phase harmonic currents.
Hopefully, if you follow these steps and customize the amplitudes and phases accordingly, you can generate constant three-phase harmonic currents in Simulink. This approach allows for flexibility in creating harmonic sources tailored to your specific requirements, even though the three-phase constant current block does not directly support harmonic generation.
Please let me know if you have further questions.
