From: A novel low voltage ride through strategy for cascaded power electronic transformer
 | Variable | Rectified state | Inverter state |
---|---|---|---|
Before voltage sag | \( {P}^{\ast}\left({i}_{d0}^{\ast}\right) \) | 0.375 | − 0.375 |
\( {Q}^{\ast}\left({i}_{q0}^{\ast}\right) \) | 0 | 0 | |
P 0 | 0.375 | − 0.375 | |
Q 0 | 0 | 0 | |
After voltage sag α = 0.4 | \( {i}_d^{\ast } \) | 0.937 | − 0.937 |
\( {i}_q^{\ast } \) | 0.75 | 0.75 | |
P | 0.375 | − 0.375 | |
Q | −0.3 | − 0.3 |