Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 1991 | Invention patented by Gary L. Galloway, Thomas S. Latos, and Derrick Roe on October 23th, 1991. Abstract: The problem of minimizing DC content in a dual converter system (18) is addressed with dual inverters (36,38) having outputs connected in parallel through an interphase transformer (42). The outputs for each phase are connected through a neutral forming transformer (43) to develop a reference. The output voltage at each phase is sensed, filtered and averaged to develop a signal representing DC content in each of the output phase voltages. A master controller (40-1) develops switching signals for the master inverter (36) which signals are modified based on the DC content of the output phase voltages to minimize the same. A current transducer (44) for each phase senses differential current output from the master and slave inverters (36 and 38) for each phase. This signal is used to modify PWM patterns from a slave controller (40-2) for minimizing DC content through the interphase transformers (42). |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
