Deforming of 60Hz sine wave wrt time based on 20KHz SPWM

one thing I notice your counters are restrained only if equal to maximum set but they can be over max so they keep adding.

for example

if(counter_pwm = 2500) then

counter_pwm := 0

end if;

it should be more than or equal.

if you are just adding 1 that shouldn't matter but what about count which adds 83 and what is this logic meant to do:

if (count < 208335) then

count := 0;