<< Thread moved to the HH forums from the technical engineering forums, so no HH Template is shown >> The model: The goal: 1. Create a three phase voltage 2. Do a alpha-beta transformation 3. Do a Cartesian to Polar transformation 4 Check the output angle The expected result: Since the space vector rotates counter-clock wise the angle should from 0 to 180o and drop to -180o(instantly!) and rise again and repeat. But the actual result is: As you can see it does not reach 180 or -180 sometimes..I need your help.