Siemens Aktiengesellschaft

Siemens Corporation

Yaosuo Xue

Sanjeev Srivastava

Dong Wei

Sindhu Suresh

Madhav Manjrekar

Paul J Bruschi

Parag Patre

Divya Kurthakoti Chandrashekhara

A flexible control architecture for an electrical power microgrid provides resiliency when operating under varying threat levels. The architecture includes a microgrid control layer, an intermediate layer and a component control layer. A contingency level is computed based on conditions of the microgrid such as weather and system state. When the contingency level indicates a low degree of threat, the system operates in a centralized, top-down control configuration. When the contingency level indicates a high degree of threat, the system operates in a decentralized control configuration with the microgrid control layer performing only a monitoring function.

Flexible control architecture for microgrid resiliency

A power grid of renewable sources is stabilized. Inverters for connecting power sources, such as wind turbines, batteries, or photovoltaics, to a grid are used to damp grid oscillations. The damping is distributed to the inverters, but based on measurements for the grid rather than local measurements. The control of the damping is based on grid wide analysis, and the damping is performed proportionately by already existing inverters distributed throughout the grid.

Power system stabilization using distributed inverters

Systems and methods are described that provide multilevel inverters having a plurality of levels using a simplified topology. For single phase systems, embodiments provide a full-bridge topology using bidirectional switching interconnections.

Single phase inverter topology method

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Yaosuo Xue