Generate sine wave using input signal as amplitude source

In figure shown i have developed 25 level inverter whose output is distorted sine wave means full of unwanted harmonics, for filtering out these harmonics I wanna attach an active power filter (APF) at the output of inverter . For the design of APF I need pure sine wave whose amplitude is equal to the amplitude of distorted power signal, I extracted the amplitude of distorted power signal as shown in figure. Now I want to give this amplitude as input signal to another block who will generate a pure sine wave of amplitude equal to input signal. But unfortunately I am not getting any such kind of block. Any sort of help in this regard will be appreciated. thanks

[sajjad ahmad]

thanks Every one, I got the answer, by using multiplication block my problem solved.

Answer 1

[madhan ravi]

Why not use Sine Wave and multiply it with the Amplitude using Product Block? If you are using newer release, one can directly use Parameter Writer

[sajjad ahmad]

Use Min/Max block to extract amplitude of the input signal, then use product block to multiply this amplitude with a sine wave.