A control method and related device for a virtual synchronous generator
A technology of virtual synchronization and control method, which is applied in the direction of synchronous generator control, generator control, generator control through magnetic field changes, etc., and can solve the problem of long calculation time
Active Publication Date: 2021-08-24
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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[0004] This application provides a virtual synchronous generator control method and related devices, which are used to solve the problem that the existing virtual synchronous generator model predictive control method needs to repeatedly calculate and compare the control targets under different switch states to select the optimal switch state , leading to technical problems that take a long time to calculate
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[0046] The embodiment of the present application provides a virtual synchronous generator control method and related devices, which are used to solve the need to repeatedly calculate and compare the control targets under different switching states in the existing virtual synchronous generator control method, so as to select the optimal switching state , leading to technical problems that take a long time to calculate.
[0047] In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the following The described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art...
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This application discloses a virtual synchronous generator control method and related devices. First, obtain the first standard voltage vector and the second standard voltage vector of the standard voltage vector in the two-phase static αβ coordinate system, and then obtain the standard voltage vector according to the first standard voltage vector Calculate the angle of the standard voltage vector with the second standard voltage vector, determine the first sector where the standard voltage vector is located according to the angle of the standard voltage vector, and then calculate and judge the first instant in the first sector according to the functional relationship of a right triangle Therefore, the optimal voltage control vector can be selected from the control vectors output by the eight switching modes of the virtual synchronous generator, without traversing the control vectors output by all the switching modes in the virtual synchronous generator, reducing the control system The calculation time solves the existing technical problem of needing to repeatedly calculate and compare the control targets under different switching states to select the optimal switching state, which leads to long calculation time.
Description
technical field [0001] The present application relates to the technical field of grid-connected inverter control, and in particular to a control method and a related device for a virtual synchronous generator. Background technique [0002] With the vigorous development of renewable energy, distributed energy such as solar energy and wind energy, which use inverters as grid-connected interfaces, has developed rapidly. In order to realize the friendly access of distributed energy resources, the virtual synchronous generator (VSG), which simulates the rotor inertia and damping characteristics of synchronous generators, is widely used in it. [0003] The existing model predictive control methods for virtual synchronous generators need to repeatedly calculate and compare the control objectives under different switching states to select the optimal switching state, resulting in long calculation time. Contents of the invention [0004] This application provides a virtual synchro...
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IPC IPC(8): H02J3/40H02P9/30H02P103/20
CPCH02J3/40H02P9/305H02P2103/20H02J2300/24H02J2300/28Y02E10/56
Inventor 谢志文唐酿陈璐寒黄明欣黄辉曾杰
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID