Reactive power adjusting system and method suitable for permanent magnet synchronous generator
A technology of permanent magnet synchronization and power adjustment, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of unadjustable reactive power, control complexity and high cost
Pending Publication Date: 2021-05-18
广州华南鑫沨能源科技有限公司
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Problems solved by technology
However, since the magnetic field of the permanent magnet synchronous generator is provided by the permanent magnet, it cannot be changed according to the operation requirements of the power grid, so its reactive power cannot be adjusted. Although there is a hybrid method of permanent magnet and electric excitation for reactive power adjustment, but its Control complexity and high cost
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[0023] A reactive power adjustment system suitable for permanent magnet synchronous generators, such as figure 1 As shown, including prime mover, permanent magnet synchronous generator, adjustable voltage transformer, high voltage switch, low voltage switch, synchronization and protection device;
[0024] The prime mover drives the permanent magnet synchronous generator to rotate; the permanent magnet synchronous generator converts the mechanical power input by the prime mover into electrical power, and connects it to an adjustable voltage transformer through a low-voltage switch, and then connects to the power grid after being boosted by the adjustable voltage transformer; The high-voltage winding of the voltage regulating transformer is connected to the grid through a high-voltage switch, and the low-voltage winding is connected to the stator winding of the permanent magnet synchronous generator through a low-voltage switch.
[0025] The prime mover is the power equipment th...
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The invention discloses a reactive power adjusting system and method suitable for a permanent magnet synchronous generator. The system comprises a prime motor, a permanent magnet synchronous generator, an adjustable voltage transformer, a high-voltage switch, a low-voltage switch and a synchronizing and protecting device. The prime mover drives the permanent magnet synchronous generator to rotate; the permanent magnet synchronous generator converts mechanical power input by the prime motor into electric power, and the electric power is connected to the adjustable voltage transformer through the low-voltage switch and is connected to a power grid after being boosted by the adjustable voltage transformer. A high-voltage winding of the adjustable voltage transformer is connected with a power grid through a high-voltage switch, and a low-voltage winding is connected with a stator winding of the permanent magnet synchronous generator through a low-voltage switch. The technical means is simple and easy to implement, the reactive power output by the generator can be adjusted only by adjusting the number of turns of the transformer winding according to the operation state, the reactive power requirement of a power grid for the generator is met, the stability of the power grid is improved, and the voltage quality of the power grid is improved.
Description
technical field [0001] The invention relates to the field of power control of permanent magnet synchronous generator sets, in particular to a reactive power adjustment system and method suitable for permanent magnet synchronous generators. Background technique [0002] With the current development of new energy sources such as wind energy, tidal energy and wave energy, permanent magnet synchronous generators have been widely used due to their high energy conversion efficiency. However, since the magnetic field of the permanent magnet synchronous generator is provided by the permanent magnet, it cannot be changed according to the operation requirements of the power grid, so its reactive power cannot be adjusted. Although there is a hybrid method of permanent magnet and electric excitation for reactive power adjustment, but its Control complexity and high cost. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings and defici...
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IPC IPC(8): H02J3/50H02J3/46H02J3/40
CPCH02J3/50H02J3/466H02J3/40
Inventor 谢宝忠
Owner 广州华南鑫沨能源科技有限公司