The concept of low voltage ride through and related specifications The so-called low voltage ride-through (LVRT) specifically refers to the voltage drop at the grid connection point of the wind farm due to grid failure or disturbance, within a certain range of voltage drop, wind turbines can be connected to the grid uninterruptedly and provide a […]
Flash Posts
- Low voltage ride through technology of permanent magnet synchronous wind turbine
- Influence of low voltage on wind turbines
- Grid connection method of asynchronous wind turbines
- Grid-connection of variable-speed and constant-frequency wind turbine and operation system
- Grid-connected conditions and methods of synchronous wind turbines
Renewable energy electric power generation technologies engineering and application
The basic principles and implementation methods of renewable energy engineering using various renewable energy technologies for electric power generation are described
Renewable energy electric power generation technologies engineering and application
The basic principles and implementation methods of renewable energy engineering using various renewable energy technologies for electric power generation are described
Influence of low voltage on wind turbines
Practice has proved that a sudden drop in the voltage of the grid connection point will reduce the output power of the wind turbine, which in turn will cause an imbalance between the input power and the output power, resulting in adverse effects. For different types of wind turbines, the ability to resist low voltage […]
Grid connection method of asynchronous wind turbines
Generally, there are the following three methods for grid connection of asynchronous wind turbines. (1) Directly connected to the grid. The conditions for direct grid connection of asynchronous wind turbines are as follows: ①The rotation of the generator rotor is consistent with the direction of the rotating magnetic field, that is, the phase sequence of […]
Grid-connection of variable-speed and constant-frequency wind turbine and operation system
Grid-connection of variable-speed and constant-frequency wind turbine For a variable-speed constant-frequency controlled wind power generator using a synchronous generator, the generator armature winding is connected to the power grid through a converter. When the wind speed changes, in order to achieve the maximum wind energy capture, the electromagnetic torque of the synchronous generator needs to […]
Grid-connected conditions and methods of synchronous wind turbines
Grid-connected conditions of synchronous wind turbines The circuit of a synchronous wind generator set running in parallel with the power grid is shown in Figure 1. In the figure, the stator winding of the synchronous generator is connected to the power grid through a circuit breaker, and the rotor field winding is controlled by an […]
Wind turbine operation control
The control system of the wind turbine is an integrated control system. Take the grid-connected wind power generation system as an example. It monitors the grid, wind conditions, and operating data to control the grid-connected and disconnected wind turbines to ensure safety and reliability. Under this premise, the control system must not only optimize the […]
Operation of yaw system of wind turbine
Since the rotation of the wind turbine is driven by the wind, it is not difficult to imagine that only when the wind blows vertically to the rotating surface of the wind wheel, the wind turbine can obtain the maximum rotational torque and output the maximum mechanical power. As we all know, the wind in […]
Start of wind turbine
Normally, when the wind speed v>3m/s but not enough to drag the wind turbine to the cut-in speed, the wind turbine rotates freely and enters the standby state. In the standby state, except that the generator is not connected to the grid, the unit is actually in working state. At this time, the control system […]
The overall structure and working status of the wind turbine
The overall structure of the wind turbine A wind turbine is a device that converts the kinetic energy of the wind into mechanical energy through a wind turbine, and then into electrical energy through a generator. The wind turbine blades generate aerodynamic force under the action of the wind to rotate the wind wheel, convert […]
The latest development of wind turbines
Brushless double-fed generator Figure 1 shows the schematic diagram of the brushless doubly-fed generator. Two sets of independent three-phase windings are placed in the stator core slots of the generator. One set of windings is directly connected to the grid and is a power winding. The outlet terminal is denoted by A, B, C, and […]