Low temperature wind turbine protection controller and method based on cortex-m3 processor
A technology for wind turbines and protection controllers, which is applied to auxiliary controllers with auxiliary heating devices, computer control, temperature control using electric methods, etc., can solve the problem that the controller processor cannot adapt to low temperature environments and shorten the wind turbine. Problems such as service life and slow response speed of the controller can achieve the effect of reliable processor chip, solving temperature measurement accuracy and reliable performance.
Active Publication Date: 2016-03-02
溧阳常大技术转移中心有限公司
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Problems solved by technology
If the motor rotor is forced to start at low temperature, it will accelerate the early wear of the rotor and greatly shorten the service life of the wind turbine
The use of high-end synthetic metal materials will inevitably increase the cost of motor manufacturing
Ordinary temperature sensors in traditional wind turbine protection controllers often lead to large deviations in measurement accuracy and low test stability in low temperature and harsh environments
Most of the selected controller processors cannot adapt to the extremely harsh low temperature environment, resulting in the slow response speed of the entire controller
If the motor rotor cannot be preheated in time for a long time, it will cause damage to the wind turbine in severe cases
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[0022] Such as figure 1 As shown, the present invention consists of a hardware part and a software part. Among them, the constant current source 1 of the hardware part is connected to the channel switcher 2, and the channel switcher 2 is respectively connected to the sensor 3, the sensor 4 and the instrument amplifier 5. The instrumentation amplifier 5 is connected to the Cortex-m3ARM processor 7 through the A / D converter 6 . The Cortex-m3ARM processor 7 is respectively connected to the heating device 8 , the Ethernet interface 9 , the display module 10 and the alarm module 11 . The LCD display module 10 can display the internal and external temperature of the wind generator in real time, and can quickly control the heating wire to protect the wind generator from heating; it can give an audible and visual alarm when the sensor is damaged or other faults occur. The control algorithm of the software part controller has two sets of algorithms, fuzzy algorithm and self-tuning P...
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The invention discloses a low-temperature wind power generator protection controller and method based on a Cortex-m3 processor. A constant current of more than 1 mA is injected into the first and second sensors, and the channel switch switches to the state of the first sensor to control the external temperature. Temperature measurement, switch to the second sensor state to test the internal temperature, the measured first and second sensor signals are amplified by the instrument amplifier, converted by the A / D converter and then converted by the Cortex-m3? The ARM processor calculates and calibrates and converts it into a temperature value; the optocoupler in the heating device drives a high-current thyristor, Cortex-m3? The ARM processor sends a conduction signal to the heating device, the high-current thyristor conducts, the heating wire starts to heat, the motor rotor is heated, and the conduction angle of the thyristor is controlled to control the effective value of the current of the thyristor and the heating wire; According to the different working conditions of the components of the low-temperature wind turbine, different temperature zones for each component are set to meet the control requirements.
Description
technical field [0001] The invention relates to a protection controller of a generator set, which implements temperature control, multi-point networking communication and remote monitoring of a wind power generator under ultra-low temperature conditions. Background technique [0002] Most of the wind power generation areas are concentrated in high latitudes and high altitude areas, where the low temperature conditions are harsh. If the motor rotor is forced to start at low temperature, it will accelerate the early wear of the rotor and greatly shorten the service life of the wind turbine. The use of high-end synthetic metal materials will inevitably increase the cost of motor manufacturing. Ordinary temperature sensors in traditional wind turbine protection controllers often lead to large deviations in measurement accuracy and low test stability in low-temperature and harsh environments. Most of the selected controller processors cannot adapt to the extremely harsh low tem...
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IPC IPC(8): G05B19/042G05D23/30
Inventor 何可人马正华石林刘俊黄静华宋磊
Owner 溧阳常大技术转移中心有限公司