PLL (3ph) Time Delay/ S- Function Warning

Question

Dominic Watson 2020-5-12

0
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https://ww2.mathworks.cn/matlabcentral/answers/524765-pll-3ph-time-delay-s-function-warning

Hi, I am trying implement a PLL (3ph) block to obtain the zero crossing reference for a three phase imput. See simpele model below.

However i get the following warning and the zero crossing output seems to have three delays in the signal. I cant work out why!.

Any help on this would be much appreciated.

Warning: Block grid_tie_inverter_model/PLL (3ph)/Model/Automatic Gain Control/Positive-Sequence (PLL-Driven)/Mean (Variable Frequency)1/Model/Discrete Variable Time Delay/S-Function: The delay used is greater than the specified maximum delay parameter (0.0223222). Limiting delay value to maximum delay. Warning: Block grid_tie_inverter_model/PLL (3ph)/Model/Automatic Gain Control/Positive-Sequence (PLL-Driven)/Mean (Variable Frequency)2/Model/Discrete Variable Time Delay/S-Function: The delay used is greater than the specified maximum delay parameter (0.0223222). Limiting delay value to maximum delay. Warning: Block grid_tie_inverter_model/PLL (3ph)/Model/Variable Frequency Mean value/Model/Discrete Variable Time Delay/S-Function: The delay used is greater than the specified maximum delay parameter (0.0223222). Limiting delay value to maximum delay.