變頻空調(diào)壓縮機(jī)PMSM無傳感器控制系統(tǒng)研究
發(fā)布時間：2019-06-03 00:05
【摘要】：隨著經(jīng)濟(jì)的增長,能源日益匱乏,變頻空調(diào)相對于傳統(tǒng)的定頻空調(diào)在節(jié)能環(huán)保方面更有優(yōu)勢,空調(diào)技術(shù)朝著變頻調(diào)速、抗菌、靜音、智能化的方向發(fā)展。對比感應(yīng)電動機(jī),永磁同步電動機(jī)擁有功率因數(shù)高、能效大及很容易控制等優(yōu)點(diǎn),因此被廣泛應(yīng)用于家用空調(diào)和商業(yè)空調(diào)領(lǐng)域,成為新一代高校和企業(yè)研究的熱門。由于在永磁同步電動機(jī)的矢量控制中,電機(jī)轉(zhuǎn)子磁極位置信息是檢測的關(guān)鍵。電機(jī)轉(zhuǎn)軸上安裝機(jī)械式傳感器易受到高溫高壓、濕潤惡劣環(huán)境的侵蝕。因此,變頻空調(diào)壓縮機(jī)內(nèi)PMSM控制系統(tǒng)需要使用無傳感器控制算法獲取轉(zhuǎn)子磁極位置信息。首先,本文針對空調(diào)壓縮機(jī)永磁同步電動機(jī)無位置傳感器矢量控制系統(tǒng)進(jìn)行研究。在分析了永磁同步電動機(jī)結(jié)構(gòu)的基礎(chǔ)上,根據(jù)永磁同步電動機(jī)的特性建立了永磁同步電機(jī)的數(shù)學(xué)模型。闡述di=0速度電流雙閉環(huán)矢量控制系統(tǒng)原理進(jìn)行了深入的理論研究,以及基于Matlab/Simulink仿真平臺建立了永磁同步電動機(jī)矢量控制仿真模型。其次,本文首先對傳統(tǒng)滑模觀測器進(jìn)行了改進(jìn)和擴(kuò)展。采用了變滑模增益、Sigmoid切換函數(shù)以及反電動勢自適應(yīng)濾波等手段,有效的抑制了滑模觀測器中的高頻“抖振”,以及運(yùn)用PLL理論進(jìn)行電機(jī)磁極位置信息的估算。同時,為了增強(qiáng)轉(zhuǎn)子磁極信息檢測準(zhǔn)確性及負(fù)載參數(shù)擾動魯棒性,在滑模觀測器中引入了電機(jī)定子參數(shù)的在線辨識研究。因空調(diào)壓縮機(jī)負(fù)載周期性變化引起的轉(zhuǎn)速波動,選擇PDFF速度前饋調(diào)節(jié)器代替PI速度環(huán)。另外,針對基于反電動勢估算的永磁同步電機(jī)無傳感器控制時自起動難的問題,分析了預(yù)定位開環(huán)起動策略。最后,建立Matlab/Simulink仿真平臺,并對永磁同步電動機(jī)無傳感器矢量控制系統(tǒng)進(jìn)行了動靜態(tài)性能和魯棒行的仿真分析。
[Abstract]:With the growth of economy and the increasing shortage of energy, frequency conversion air conditioning has more advantages in energy saving and environmental protection compared with the traditional fixed frequency air conditioning. Air conditioning technology is developing in the direction of frequency conversion speed regulation, antibacterial, mute and intelligence. Compared with induction motor, permanent magnet synchronous motor (PMSM) has the advantages of high power factor, high energy efficiency and easy control, so it is widely used in the field of household air conditioning and commercial air conditioning, and has become a hot research topic in a new generation of colleges and enterprises. Because of the vector control of permanent magnet synchronous motor (PMSM), the position information of rotor pole is the key to detection. The installation of mechanical sensors on the rotating shaft of motor is easy to be eroded by high temperature and high pressure and humid environment. Therefore, the PMSM control system in variable frequency air conditioning compressor needs to use sensorless control algorithm to obtain rotor pole position information. Firstly, the sensorless vector control system of permanent magnet synchronous motor (PMSM) for air conditioning compressor is studied in this paper. Based on the analysis of the structure of permanent magnet synchronous motor (PMSM), the mathematical model of PMSM is established according to the characteristics of PMSM. The principle of di=0 speed and current double closed loop vector control system is studied theoretically, and the vector control simulation model of permanent magnet synchronous motor (PMSM) is established based on Matlab/Simulink simulation platform. Secondly, in this paper, the traditional sliding mode observer is improved and extended. The variable sliding mode gain, Sigmoid switching function and back EMF adaptive filtering are used to effectively suppress the high frequency "buffeting" in the sliding mode observer, and the PLL theory is used to estimate the magnetic pole position information of the motor. At the same time, in order to enhance the accuracy of rotor pole information detection and the robustness of load parameter disturbance, the on-line identification of motor stator parameters is introduced into the sliding mode observer. Due to the fluctuation of speed caused by periodic change of air conditioning compressor load, PDFF speed feedforward regulator is selected to replace PI speed loop. In addition, in order to solve the problem of self-starting of permanent magnet synchronous motor (PMSM) sensorless control based on back EMF estimation, the pre-positioning open-loop starting strategy is analyzed. Finally, the Matlab/Simulink simulation platform is established, and the dynamic and static performance and robust simulation analysis of the sensorless vector control system of permanent magnet synchronous motor (PMSM) are carried out.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM341;TM925.12
[Abstract]:With the growth of economy and the increasing shortage of energy, frequency conversion air conditioning has more advantages in energy saving and environmental protection compared with the traditional fixed frequency air conditioning. Air conditioning technology is developing in the direction of frequency conversion speed regulation, antibacterial, mute and intelligence. Compared with induction motor, permanent magnet synchronous motor (PMSM) has the advantages of high power factor, high energy efficiency and easy control, so it is widely used in the field of household air conditioning and commercial air conditioning, and has become a hot research topic in a new generation of colleges and enterprises. Because of the vector control of permanent magnet synchronous motor (PMSM), the position information of rotor pole is the key to detection. The installation of mechanical sensors on the rotating shaft of motor is easy to be eroded by high temperature and high pressure and humid environment. Therefore, the PMSM control system in variable frequency air conditioning compressor needs to use sensorless control algorithm to obtain rotor pole position information. Firstly, the sensorless vector control system of permanent magnet synchronous motor (PMSM) for air conditioning compressor is studied in this paper. Based on the analysis of the structure of permanent magnet synchronous motor (PMSM), the mathematical model of PMSM is established according to the characteristics of PMSM. The principle of di=0 speed and current double closed loop vector control system is studied theoretically, and the vector control simulation model of permanent magnet synchronous motor (PMSM) is established based on Matlab/Simulink simulation platform. Secondly, in this paper, the traditional sliding mode observer is improved and extended. The variable sliding mode gain, Sigmoid switching function and back EMF adaptive filtering are used to effectively suppress the high frequency "buffeting" in the sliding mode observer, and the PLL theory is used to estimate the magnetic pole position information of the motor. At the same time, in order to enhance the accuracy of rotor pole information detection and the robustness of load parameter disturbance, the on-line identification of motor stator parameters is introduced into the sliding mode observer. Due to the fluctuation of speed caused by periodic change of air conditioning compressor load, PDFF speed feedforward regulator is selected to replace PI speed loop. In addition, in order to solve the problem of self-starting of permanent magnet synchronous motor (PMSM) sensorless control based on back EMF estimation, the pre-positioning open-loop starting strategy is analyzed. Finally, the Matlab/Simulink simulation platform is established, and the dynamic and static performance and robust simulation analysis of the sensorless vector control system of permanent magnet synchronous motor (PMSM) are carried out.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM341;TM925.12
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 緒杰;;空調(diào)制冷技術(shù)研究現(xiàn)狀及發(fā)展趨勢[J];科技展望;2015年14期
2 陸ZK泉;林鶴云;馮奕;韓俊林;;永磁同步電機(jī)無傳感器控制的軟開關(guān)滑模觀測器[J];電工技術(shù)學(xué)報;2015年02期
3 高仁t，
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