Research Article
Carrier-Based Common Mode Voltage Control Techniques in Three-Level Diode-Clamped Inverter
Table 2
Comparison of CMV control techniques.
| | | Without filter | With filter ( = 1.2 mH, = 100 uF) | | | | SPWM technique | |
Line voltage
(kV) | |
Line current
(amps) | |
Line voltage
(kV) | |
Line current
(amps) | Average NPP (Vnp) volts | Average CMV (Vcm) volts | | | | % THD | | % THD | | % THD | | % THD | |
| | PD | 8.1 | 20.51 | 254 | 28.39 | 15.6 | 3.13 | 256 | 0.86 | 8.3 | 59.2 | | POD | 8.1 | 25.97 | 250 | 32.57 | 15.6 | 2.92 | 254 | 0.78 | 16.1 | 69.1 | | PD + off-set voltage | 8.0 | 7.81 | 254 | 18.16 | 15.6 | 3.24 | 258 | 0.85 | 1.4 | 25.3 | | POD + off-set voltage | 8.1 | 35.63 | 257 | 43.43 | 15.6 | 3.39 | 259 | 0.77 | 8.3 | 59.6 |
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