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Feedback type energy storage servo driving system

A servo drive and energy storage technology, applied in the field of servo drive systems, can solve the problems of inability to return energy, complex feedback structure and high production cost

Active Publication Date: 2014-02-19
大连尚佳新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the utilization rate of energy, but the feedback structure is complex and the production cost is high
In addition, this processing method will only be effective under frequent braking, and it will not be able to feed back energy when encountering a grid failure or power outage

Method used

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  • Feedback type energy storage servo driving system
  • Feedback type energy storage servo driving system

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] see figure 1 As shown, the regenerative energy storage servo drive system 100 of the present invention includes a rectifier circuit 1, an energy storage circuit 2 connected to the rectifier circuit 1, an inverter circuit 3 connected to the energy storage circuit 2, and an inverter circuit 3 connected to the inverter circuit 1. The servo unit 4 connected to the inverter circuit 3 and the energy storage element 5 connected to the energy storage circuit 2 .

[0017] see figure 1 As shown, the input end of the rectifier circuit 1 is connected to the three-phase electric grid to transmit alternating current, and the output end thereof is connected to the input end of the energy storage circuit 2 to transmit direct current. see figure 2 As sh...

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Abstract

The invention discloses a feedback type energy storage servo driving system which comprises a rectifying circuit, an energy storage circuit connected with the rectifying circuit, an inverter circuit and an energy storage element. The energy storage circuit comprises a first output end connected with the inverter circuit and a second output end connected with the energy storage element. Compared with the prior art, due to the fact that the energy storage element is arranged, renewable energy generated by a motor can be stored, the energy saving effect is achieved, and the problem that the whole system is too high in temperature due to the use of a brake resistor is solved.

Description

technical field [0001] The invention relates to a servo drive system, in particular to a feedback type energy storage servo drive system. Background technique [0002] Grid-connected wind turbines continue to develop toward large capacity. At present, the newly installed large-capacity units are basically pitch units. In the pitch unit, the pitch system has two kinds of electric servo pitch and hydraulic pitch. The electric servo pitch actuator uses a motor to individually control the blades, and its structure is compact, reliable, and can independently change the pitch. Judging from the situation at home and abroad, electric servo pitch is gradually replacing hydraulic pitch and becoming the mainstream of large wind turbine pitch systems. [0003] At present, the electric servo drive system adopts two processing methods for the regenerative energy generated by the motor. The first is to set a braking resistor in the DC circuit, and consume the regenerative energy genera...

Claims

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Application Information

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IPC IPC(8): H02J15/00H02J7/00
Inventor 韩向明吴志敢孔庆刚许浩
Owner 大连尚佳新能源科技有限公司
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