Prince Vegeta
Member level 5
A brief discussion of PWM modulation methods can be found in this thread. Please notice the literature links given by bigdogguru. Bipolar modulation is alos referred as 2-level PWM and unipolar as 3-level PWM.
https://www.edaboard.com/threads/274928/
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ATS is a topic for emergency power supply rather than grid-tied inverters. I guess a confusion of terms regarding "on-grid inverter".
we wanted to implement the ATS in the solar inverter to check solar power and when it's voltage is low, ATS will switch to the normal grid voltage. u understand this?