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Operations with voltages phases on simulink!

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Hi
I've a circuit built on simulink in which I use a 3-phase PLL block to track the stator voltage phase of an asynchronous generator and then make some math operations (subtract by pi/2 rads and then subtract by the electrical rotor angular position like the second image bellow)to apply on a abc-to-dq transformation. All the angles are in radians but it happens that the results are not exactly good so I check the wave forms of the phases (PLL, PLL-pi/2 , Om and Or presented on the third image bellow) and notice that the PLL's wave forms are triangular and have an order of magnitude quite bellow of the rotor angular position (Or) and rotor mechanical position (Om).
This is probably giving me bad results, and I dont know if this is normal. Is it?
I would like to convert the Om or Or phases in a triangular ramp varying between 0 and 2pi like the PLL. How can I do it?
Thanks in advance!
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