Wideband Acousto-Optic Modulator/Isolator in Integrated Photonics
| DWPI Title: Modular solid state transformer for utilizing a hierarchical control approach to achieve system-level objectives while ensuring equitable power-sharing between nonuniform building block modules, has system controller for generating module operational setpoint that is provided to module controller |
| Abstract: Structural modularity is critical to solid-state transformer (SST) and solid-state power substation (SSPS) concepts, but operational aspects related to this modularity are not yet fully understood. Previous studies and demonstrations of modular power conversion systems assume identical module compositions, but dependence on module uniformity undercuts the value of the modular framework. A hierarchical control approach for modular SSTs achieves system-level objectives while ensuring equitable power sharing between nonuniform building block modules. This enables module replacements and upgrades which leverage circuit and device technology advancements to improve system-level performance. |
| Use: Modular solid state transformer for utilizing a hierarchical control approach to achieve system-level objectives while ensuring equitable power-sharing between nonuniform building block modules. |
| Advantage: The system-level objectives are provided while ensuring equitable power and/or voltage sharing between nonuniform building block modules. The implementation of current sharing behavior is simplified when an external voltage source is present to maintain voltage and frequency. The ability to replace aged modules allows the operational life of the system to be extended far beyond the service life of its individual components. |
| Novelty: The transformer has a system controller for generating a module operational setpoint that is provided to a module controller to derive switching signals for a switching module. The switching module uses a low bandwidth signal, where the low bandwidth signals is between 10-300 hertz. The hierarchical control architecture enables stable operation of paralleled and/or series-connected heterogeneous modules in a common system. The transformer achieves flexibility in voltage and current rating by interconnection of multiple lower rated modules cascaded in series for higher voltage operation or in parallel for higher current operation. The module controllers are provided. |
| Filed: 10/17/2023 |
| Application Number: US18488194A |
| Tech ID: SD 16346.0 |
| 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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