Construction method of direct-drive permanent magnet synchronous wind turbine generator model

Abstract

The invention provides a construction method of a direct-drive permanent magnet synchronous wind turbine generator model. The construction method comprises the following steps: 1: converting the standard parameter of a permanent magnet synchronous motor into an actual value parameter with a SI (System International) unit system; 2: converting the parameter of an electrically excited synchronous motor and the parameter of the permanent magnet synchronous motor; 3: carrying out standardization on the parameter of a new electrically excited synchronous motor; 4: establishing a constant exciting current controller model by simulation software, and calculating the initial reference value of exciting current; 5: constructing an equivalent model of the permanent magnet synchronous motor; and 6: constructing a permanent magnet wind turbine generator model. Compared with the prior art, the construction method of the direct-drive permanent magnet synchronous wind turbine generator model adopts parts of traditional power system business software which is lack of the permanent magnet motor model in a model base to establish the permanent magnet synchronous motor model or a relevant system which comprises the permanent magnet synchronous motor, and realistic difficult problems brought by the deficiency of the permanent magnet synchronous motor model are solved.

Description

Technical field [0001] The invention relates to the technical field of new energy power generation modeling and simulation, in particular to a method for constructing a direct drive permanent magnet synchronous wind turbine model. Background technique [0002] In recent years, variable speed constant frequency wind power generation technology has become a research hotspot in the field of new energy power generation. Compared with constant-speed and constant-frequency wind turbines, variable-speed and constant-frequency wind turbines can control the generator speed through a converter, achieve maximum wind energy capture within a wide range of wind speed changes, and greatly increase wind energy utilization. The direct-drive permanent magnet wind turbine is one of the variable speed constant frequency wind turbines. It uses a full-power converter to connect to the grid. It can quickly provide reactive power to the grid and adjust the system voltage in the event of a grid failure. ...

AI Technical Summary

Problems solved by technology

Since there is no permanent magnet synchronous generator model in the existing part of the power system commercial simulation software model library, it is difficult to use these software to realize the direct drive permanent magnet wind turbine model

Fortunately, except for the differences in the excitation methods used, the permanent magnet synchronous generator and the electric excitation synchronous motor have a large degree of similarity in operating characteristics, so that the use of the permanent magnet synchronous generator equivalent electric excitation synchronous motor brings come possible

Images