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Fully digital servo driver for AC permanent magnet synchronous motor for wind power generation pitch

A technology of permanent magnet synchronous motor and servo drive, which is applied in the direction of AC motor control, wind power generation, wind power generator, etc., and can solve problems such as poor speed regulation performance, inability to apply AC permanent magnet synchronous motor, and difficult control of AC asynchronous motor, etc. Achieve high dynamic performance, stable and reliable control performance, and light weight

Active Publication Date: 2012-11-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Although this patented technology adopts full digital control, it can only be used for AC asynchronous servo motors and cannot be applied to AC permanent magnet synchronous motors.
However, AC asynchronous motors have disadvantages such as not easy to control and poor speed regulation performance.

Method used

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  • Fully digital servo driver for AC permanent magnet synchronous motor for wind power generation pitch
  • Fully digital servo driver for AC permanent magnet synchronous motor for wind power generation pitch
  • Fully digital servo driver for AC permanent magnet synchronous motor for wind power generation pitch

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Embodiment Construction

[0014] The technical solutions of the present invention will be further explained below in conjunction with the drawings and embodiments, but the following content is not intended to limit the protection scope of the present invention.

[0015] Such as figure 1 , 3 As shown, this embodiment provides an all-digital AC permanent magnet synchronous motor servo driver for wind power pitch change. The peripheral equipment includes a permanent magnet synchronous motor, a pitch control cabinet and an encoder. The driver mainly includes: DSP module, uncontrolled rectification module, power switch module, analog input module, digital input module, digital output module, CANOPEN communication module, drive module, encoder signal acquisition module. The wind turbine master communicates with the pitch master controller, and the pitch master controller communicates with the servo drive through the CANOPEN communication module, and sends the pitch change command to the servo drive.

[001...

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PUM

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Abstract

The invention discloses a fully digital servo driver for an AC (alternating current) permanent magnet synchronous motor for a wind power generation pitch. The fully digital servo driver comprises a DSP (digital signal processor) module, an uncontrolled rectifier module, a power switch module, an analog input module, a digital input module, a digital output module, a CANOPEN (control area network open) communication module, a driver module and an encoder signal acquisition module. The digital input and the analog input can be monitored, so as to determine the failure of the driver, the control can be performed according to a normal feedback mode in the case of no failure, and an alarm is given and the driver is shut down in the case of failure. The functions of the different modules of the servo driver can be achieved by different printed circuit boards respectively, the interboard structure is compact, and the control method is simple and accurate.

Description

technical field [0001] The invention relates to a wind power generation pitch change technology, in particular to an all-digital AC permanent magnet synchronous motor servo drive for wind power pitch change. Background technique [0002] The use of renewable energy is increasingly valued by countries all over the world, and wind power has played an increasingly important role in improving energy structure and improving energy utilization efficiency. my country has also paid great attention to the development of wind power industry. The servo drive is one of the core components of the wind power pitch control system. It controls the permanent magnet synchronous motor through communication with the pitch control master to control the angle of the blades, which can meet the needs of feathering in emergency situations. [0003] At present, the mainstream servo drives used in wind power pitch projects all use DSP as the control core, which can realize relatively complex control a...

Claims

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Application Information

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IPC IPC(8): F03D7/00H02P6/06H02P27/06
CPCY02E10/723Y02E10/72
Inventor 曹云峰蔡旭朱洪成
Owner SHANGHAI JIAO TONG UNIV
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