A highly integrated integrated wind power pitch controller

Abstract

The invention discloses a highly integral wind power variable pitch controller, and belongs to the technical field of wind power variable pitch control. The highly integral wind power variable pitch controller comprises an alternative-current permanent magnetic synchronous motor driving system, a PLC (Programmable Logic Controller) system, a switch power supply and a backup power supply charger. Compared with a conventional variable pitch controller, the highly integral wind power variable pitch controller has the advantages: 1) four main electric control parts inside a conventional variable pitch control cabinet are integrated together, then connecting wires inside the cabinet can be greatly reduced, and the controller is high in integration degree, high in reliability and convenient to mount and debug; 2) due to full digital control, the controller is stable and reliable in control performance; 3) due to control of a permanent magnetic synchronous motor, the controller is large in power density, large in start torque, small in influence upon power grid operation, small in system volume and light in weight; 4) as a rotational transformer is adopted to detect the speed of the motor, good motor control properties can be ensured; 5) an RS232 interface and a CAN (Controller Area Network) interface are adopted as communication and debugging interfaces.

Description

technical field [0001] The invention belongs to the technical field of wind power pitch control, and in particular relates to a highly integrated wind power pitch controller, which is suitable for controlling a permanent magnet synchronous motor of a wind power pitch system. Background technique [0002] At present, in the electric pitch system of large-capacity wind turbine generators with low wind speed of 2MW and above in China, high-performance medium-power permanent magnet synchronous motors are getting more and more attention due to their advantages of high power density, high adjustment accuracy, high dynamics and high reliability. more applications. At present, while the power level of the pitch system is continuously increasing, the requirements for the reliability of the control system are also getting higher and higher. The traditional pitch control system adopts a discrete architecture. The layout and wiring of this architecture are complicated, and the producti...

AI Technical Summary

Problems solved by technology

The traditional pitch control system adopts a discrete architecture. The layout and wiring of this architecture are complicated, and the production process is cumbersome; the cable connectors are prone to aging and are easily affected by environmental factors such as temperature, humidity, and electromagnetic interference.

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