Solid-state transformer for mitigation of common mode insults
| DWPI Title: Solid-state transformer for mitigation of common mode insults for operation of large-scale electric power grids, has energy storage system electrically connected in parallel to output of primary-side alternating current/direct current converter and provided with battery, super capacitor or flywheel |
| Abstract: A high altitude electromagnetic pulse (HEMP) or other similar geomagnetic disturbance (GMD) has the potential to severely impact the operation of large-scale electric power grids by introducing low-frequency common-mode (CM) currents which deteriorate the performance of key grid components, such as large power transformers. A solid-state transformer (SST) can replace susceptible equipment and improve grid resiliency by safely redirecting, absorbing, and/or converting these CM insults. |
| Use: Solid-state transformer (SST) for mitigation of common mode (CM) insults for an operation of large-scale electric power grids. |
| Advantage: The transformer can replace susceptible equipment and improve grid resiliency by safely redirecting, absorbing and converting CM insults. |
| Novelty: The transformer has a primary-side alternating current (AC)-direct current (DC) converter located on grid side. An intermediate DC/DC converter is electrically connected in series to output of the primary-side AC/DC converter which provides galvanic isolation of the grid side and load side, thus enabling large step-up or step-down ratios. A secondary-side DC/AC converter is electrically connected in series to output of the intermediate DC/DC converter and configured to feed downstream load. An energy storage system is electrically connected in parallel to the output of the primary-side AC/DC converter and provided with a battery, a super capacitor or a flywheel. |
| Filed: 10/29/2024 |
| Application Number: US18929917A |
| Tech ID: SD 16456.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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