| Abstract |
The minimum and maximum values of the modulation depth which observe the minimum switching state time of the converter valves are computed for different modulation methods already known from the technical literature. A new modulation method is proposed, suitable for ac-dc converters operating at high modulation depth and zero phase displacement between phase voltage and current, which increases the allowed maximum modulation depth. Finally, the influence of the new modulation method on line current harmonics is analyzed. |
