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Redundant pitch system

A technology of pitch system and pitch drive, which is applied in the control of wind turbines, engine functions, engines, etc., which can solve the problems of insufficient redundancy and achieve reliable transmission

Inactive Publication Date: 2011-09-21
SSB WIND SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that with only two rotor blades, if one of the pitch systems fails, only the other pitch system must fulfill the safety function
This is not considered sufficient for redundancy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Depend on Figure 1a It can be seen that the pitch drive of the pitch system according to the first embodiment of the present invention, wherein the motor M mechanically coupled with the rotor blade B1 can pass through a first series circuit composed of a switch S and a first conductive slip ring Se1 Electrically connected to a converter. The motor M can also be electrically connected to the converter through a second series circuit composed of a switch and a second conductive slip ring Se2, wherein the second series circuit is connected in parallel with the first series circuit. Therefore, the motor M can be electrically connected to the converter through the first conductive slip ring Se1 or through the second conductive slip ring Se2 by means of the switch. The conductive slip rings Se1 and Se2 are preferably each designed as a slip ring unit. The electrically conductive slip ring forms in particular a slip ring arrangement.

[0042] If one conductive slip ring is...

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PUM

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Abstract

A pitch system for a wind power installation (1) comprising at least one electrically driven pitch drive (18, 19), which is associated with each rotor blade of the installation and has at least one electric motor (M), which is arranged in a rotating part of the installation (1), for blade adjustments, and a power and control unit which is associated with the motor (M) and has line connections (520) for transmission of power and control data from the power and control unit to the motor (M) and vice versa, wherein the line connections (520) are passed via a rotating bushing (Se1), which is arranged at a connecting point between the rotating part and an axially adjacent stationary region, and wherein the system has a further rotating bushing (Se2), which operates mechanically and electrically separately from the first rotating bushing (Se1) and is connected or can be connected to the power and control unit and to the motor (M), in order in this way to maintain reliable transmission of the power and control data if the first rotating bushing (Se1) fails.

Description

technical field [0001] The invention relates to a pitch system for a wind power plant comprising at least one electrically driven pitch drive assigned to each rotor blade of the plant with at least one pitch drive arranged in a rotating part of the plant An electric motor for adjusting the blades and a power and control unit associated with the electric motor, the power and control unit has connecting wires for transmitting electrical energy data and control data from the power and control unit to the electric motor (or vice versa), wherein the connection The conductors are guided via slip rings arranged at the connection points between the rotating part and the axially connected fastening region. Background technique [0002] Modern wind power plants comprise rotor blades mounted rotatably on the rotor, which can vary the angle of attack of the wind relative to each rotor blade by changing the blade angle individually (pitch system). In addition to the energy-efficient adj...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D9/00
CPCY02E10/723Y02E10/722Y02E10/72F03D11/00F05B2260/70F05B2260/79F03D7/0224Y02E10/721F03D80/00F03D80/85F03D7/04F03D7/02
Inventor 法比奥·伯托洛蒂赫尔曼·凯斯特曼詹斯·范谢尔维
Owner SSB WIND SYST
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