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Charging method by raising instantaneous power for wind power generation system

A wind power generation system and instantaneous power technology, applied in the field of instantaneous power boost charging of wind power generation systems, wind power generation systems and instantaneous power boost charging, and can solve the problems of low voltage and current, low battery charging efficiency, etc.

Active Publication Date: 2013-04-17
EOPLLY NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known control method works well when the wind speed is high, but when the wind speed is relatively low, the voltage and current generated by the generator are relatively low, and such a small current is also very efficient for charging the battery (especially the gel battery). Low, the voltage of the generator is even lower than the voltage of the battery, at this time the electric energy generated by the generator cannot be charged into the battery

Method used

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  • Charging method by raising instantaneous power for wind power generation system
  • Charging method by raising instantaneous power for wind power generation system
  • Charging method by raising instantaneous power for wind power generation system

Examples

Experimental program
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Effect test

Embodiment 1

[0010] Embodiment 1: as figure 2 Shown is the circuit connection diagram of the wind turbine controller with instantaneous power boost function. It includes a wind generator 1 , a rectification filter circuit 2 , an energy storage device 3 , a switch circuit 4 , a control sampling circuit 5 , a DC / DC conversion circuit 6 , and a storage battery 7 . The output terminals 1, 2, and 3 of the wind turbine T1 are respectively connected to the AC input terminals a, b, and c of the three-phase rectifier bridge composed of diodes D1, D2, D3, D4, D5, and D6. The AC power is rectified and connected in parallel The capacitors C1 and C2 together are filtered and turned into direct current. The negative poles of the capacitors C1 and C2 are connected to the ground, and the positive poles are connected to the positive pole of the output terminal of the three-phase rectifier bridge composed of diodes D1, D2, D3, D4, D5, and D6. The resistor R1 and R2 are connected in series to form a voltag...

Embodiment 2

[0011] Embodiment 2: as image 3 The circuit connection diagram shown. Relative Example 1 figure 2 The structure saves the field effect transistor Q2, diodes D7, D8, D9, D10, and the circuit connection mode of other components is the same as figure 2 same. Therefore, the circuit is simpler and the cost is reduced.

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Abstract

The invention relates to a charging method by raising instantaneous power for a wind power generation system. A wind-driven generator generates three-phase alternating current which is converted into direct current (DC) by a rectifying and filtering circuit; an energy storing device and a DC / DC converting circuit are additionally arranged behind the rectifying circuit, low-voltage and low-currentenergy generated by the wind-driven generator under low wind velocity is instantly released to raise the instantaneous power for charging the energy storing device; and a sampling circuit is controlled to sample the voltage of the wind-driven generator, and according to the voltage, whether a switching circuit needs to be cut off for charging the energy storing device, or whether to output pulse width signals to drive the switching circuit to perform pulse charging on a storage battery is judged. The invention solves the problem of waste of energy generated by the generator under low wind velocity, and simultaneously realizes control of the rotation speed of the wind-driven generator to avoid damage of the generator.

Description

1. Technical field [0001] The invention relates to a charging method for instantaneous power boosting of a wind power generation system, in particular to a wind power generating system and a charging method for instantaneous power boosting capable of charging a storage battery under a low wind speed and low voltage state, belonging to the technical field of electronic control. 2. Background technology [0002] Due to its many advantages such as no pollution, abundant resources, and low cost, wind power is of great significance to protecting the environment and improving the energy structure. Wind power technology is becoming more and more mature, the market is gradually expanding, and it has been widely used in remote areas without electricity and grid-connected power generation systems. Known wind power generation control systems such as figure 1 : the alternating current output by the wind generator 1 becomes direct current after the rectification filter circuit 2, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/14H02J15/00
CPCY02E70/30
Inventor 傅定文韩莉娅庄勇杨建国夏义军
Owner EOPLLY NEW ENERGY TECH