Systems and methods for use in recovering a converter after grid fault event

摘要

Systems, power modules (108), and methods (200) for using in controlling a converter (110) coupled between a power generator (104) and an electric grid (102) are provided. One of the power modules (108) includes the converter (110) configured to supply an output from the power generator (104) to the electric grid (102), and a controller (112) coupled to the converter (110). The controller (112) includes a phase-lock-loop (PLL) module (123) and at least one regulator (128, 130). The at least one regulator (128, 130) is configured to at least partially control the converter (110) as a function of at least one parameter. The controller (112) is configured to disable the converter (110) in response to a grid fault event, to maintain coupling between the power generator (104) and the converter (110) during the grid fault event, to determine whether the PLL module (123) is locked onto a voltage associated with the electric grid, to adjust the at least one parameter after the grid fault event, and to re-enable the converter to supply the output from the power generator (104) to the electric grid (102).

主权项

1. A power module comprising:
a converter configured to supply an output from a power generator to an electric grid; and, a controller coupled to said converter and comprising a phase-lock-loop (PLL) module and at least one regulator, said at least one regulator configured to at least partially control said converter as a function of at least one parameter, said controller configured to:
disable said converter in response to a grid fault event;maintain coupling between the power generator and said converter during the grid fault event;determine said PLL module is locked onto a voltage associated with the electric grid;adjust the at least one parameter after the grid fault event comprising performing an adjustment to a voltage reference of said regulator to reduce a voltage demand of said regulator to substantially zero, wherein the voltage reference is a first parameter of the at least one parameter; and,re-enable said converter to supply the output from the power generator to the electric grid.