US 2026/0095052 A1 · MULTI-OPERATIONAL MODE INVERTERS THAT FACILITATE A UNIFIED CONTROL DESIGN ACROSS DIFFERENT POWER GRID TYPES

Abstract

A computing system for functional integration with a distributed power grid having one or more inverters. The computing system includes processing device(s) to control operation of an inverter by executing a feedback controller with a grid-tied line, of the distributed power grid, treated as a plant and including a unified algebraic control system operating based on a pair of closed-loop variables carried in closed-loop signals of the unified algebraic control system. The processing device(s) control, using the feedback controller, transitions of the inverter between a plurality of operating modes by adjusting a magnitude of the closed-loop signals, which correspond to the pair of closed-loop variables, towards a setpoint of a plurality of setpoints. Each setpoint corresponds to a different operating mode of the plurality of operating modes.

Claims25

Dependent claims

A computing system for functional integration with a distributed power grid comprising one or more inverters, wherein the computing system comprises:

one or more processing devices;
and
memory communicatively coupled with and readable by the one or more processing devices and having stored therein processor-readable instructions which, when executed by the one or more processing devices, cause the one or more processing devices to perform operations comprising:
controlling operation of an inverter, of the one or more inverters, by executing a feedback controller with a grid-tied line, of the distributed power grid, treated as a plant and comprising a unified algebraic control system operating based on a pair of closed-loop variables carried in closed-loop signals of the unified algebraic control system;
and
controlling, using the feedback controller, transitions of the inverter between a plurality of operating modes by adjusting a magnitude of the closed-loop signals, which correspond to the pair of closed-loop variables, towards a setpoint of a plurality of setpoints, wherein each setpoint corresponds to a different operating mode of the plurality of operating modes.

3 more elements

A method for controlling distributed inverters in a multi-source power grid, the method comprising:

executing, by a computing system operatively coupled to the distributed inverters, a unified algebraic control system in which different operating modes of the distributed inverters are defined by magnitudes of closed-loop signals, wherein the different operating modes cause differing control of the distributed inverters, and the closed-loop signals are associated with a plurality of control parameters;
parameterizing, within the unified algebraic control system, an operational space of the multi-source power grid as a two-dimensional continuum of the different operating modes using the plurality of control parameters;
enabling smooth transitions between the operating modes by adjusting the plurality of control parameters along trajectories in the operational space between setpoints of the plurality of control parameters;
and
maintaining, by the computing system, stability during inverter transitions through pointwise stability at each operating mode, of the operating modes, and a controlled rate of parameter change associated with the plurality of control parameters.

2 more elements

Dependencies are inferred from the claim text.

Multi-operational mode inverters that facilitate a unified control design across different power grid types

Life of this patent

Multi-operational mode inverters that facilitate a unified control design across different power grid types

Life of this patent

Abstract

Claims25