High-pressure alternating-current variable-pitch system based on KEB driver

Abstract

The invention relates to a high-pressure alternating-current variable-pitch system based on a KEB driver, and belongs to the technical field of renewable clean energy. The high-pressure alternating-current variable-pitch system comprises a system safety chain, a main control unit, a main communication unit, a first sub-communication unit, a second sub-communication unit, a first variable-pitch shaft control cabinet, a second variable-pitch shaft control cabinet and a third variable-pitch shaft control cabinet; and the system safety chain is arranged between the main control unit and the firstvariable-pitch shaft control cabinet, between the main control unit and the second variable-pitch shaft control cabinet and between the main control unit and the third variable-pitch shaft control cabinet. The high-pressure alternating-current variable-pitch system based on the KEB driver uses the KEB intelligent driver 19P6, and each blade completes pitch varying and safe control through a special pitch varying drive system. On the aspect of design, a modular design concept is adopted, and the number of components and the space of the pitch varying cabinets are greatly reduced. On the aspectof electric control, on the condition that the requirement and the safety of the variable-pitch system are completely met, a control loop device is greatly simplified, and maintenance is more convenient to achieve.

Description

Technical field [0001] The invention belongs to the technical field of renewable clean energy, and specifically relates to a high-voltage AC pitch system based on a KEB drive. Background technique [0002] As fossil energy such as coal and petroleum is declining globally, countries around the world have turned their attention to the research, development and utilization of renewable clean energy. Wind power has become the focus of my country’s new energy strategy. Wind power is the most developed in recent years. One of the green energy sources that is fast and has large-scale development and utilization. At present, wind turbines are developing in the direction of large-scale, variable pitch and variable speed and constant frequency. [0003] The pitch control system is one of the core components of wind turbines. As the power of wind turbines continues to increase, an intelligent variable with variable pitch functions such as inverter, PLC control, backup power supply charging an...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the invention is to provide a high-voltage AC pitch system based on the KEB driver, which solves the problems that are not conducive to installation and control in the DC pitch system

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