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F28M36P63C2: Problem implementing abc to dq transformation

Intellectual 365 points

Replies: 3

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Part Number: F28M36P63C2

Dear all,

I am trying to implement a dq controller for a three-phase inverter. I have calibrated all my inputs and i am feeding them into the simulink ''abc to dq'' block.

When i operate in open loop, i am using a three-phase PLL to obtain wt and i can see Vd,Vq as constants and as expected.

When i want to close the loop, i obtain wt by giving a constant w into a discrete integrator. However, in that case the output of ''abc to dq'' block gives sinusoidal components and not constants.

Has anyone faced this issue before? Any hints?

Thanks in advance.

Alex

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