本文選題：永磁同步電機 + 無位置傳感器技術��； 參考：《江蘇大學》2017年碩士論文

【摘要】：永磁同步電機具有結構簡單,功率密度高,控制效率高,易于控制等特點,在實際生活中被廣泛應用于各個領域。特別是家電行業(yè)中,我們?nèi)粘Ｋ璧娘L機逐漸開始使用永磁同步電機。因此,研究出一種永磁同步電機高效率,低成本的控制方案具有重要的意義。永磁同步電機位置傳感器的安裝降低了系統(tǒng)的可靠性,同時增加了電機成本和安裝維護費用。為了降低成本,提高系統(tǒng)的可靠性,無位置傳感器技術將是未來研究的重點。風機系統(tǒng)對控制器動態(tài)性能要求不苛刻,無位置傳感器技術是其首選。本文將無位置傳感器技術使用于永磁同步電機控制中,降低系統(tǒng)成本。系統(tǒng)以200W的表貼式永磁同步電機為研究對象,采用了新唐的NM1100芯片為控制核心結合無位置滑模觀測器算法,設計了永磁同步電機的無位置控制系統(tǒng)。本畢業(yè)設計主要研究內(nèi)容如下:(1)研究了永磁同步電機的矢量控制方法,并以永磁同步電機在三相靜止坐標系下的數(shù)學模型為基礎,通過矢量控制坐標變換原理建立了永磁同步電機在兩相旋轉d-q坐標系下的數(shù)學模型。(2)研究了永磁同步電機無位置傳感器技術的啟動策略,解決了永磁同步電機在低速情況下辨識度低的問題。預定位法解決了電機啟動位置識別問題,二次定位解決了啟動失敗問題。為了解決低速下觀測器無法觀測問題,采用V/F控制提升電機轉速。(3)論文分析了滑模變結構控制的理論,驗證了其滿足的條件。并以滑模變結構理論為基礎,設計了滑模觀測器。在MATLAB中對基于滑模觀測器的永磁同步電機無位置傳感器系統(tǒng)進行了仿真,從得出的仿真波形驗證了該系統(tǒng)的可行性。針對200W的風機設計了永磁同步電機的驅動系統(tǒng)硬件電路,并以NM1100為核心進行了軟件算法編程。搭建了永磁同步電機的無位置傳感器技術實驗平臺并測得實驗波形,以實驗波形為前提驗證了系統(tǒng)的可靠性。
[Abstract]:Permanent magnet synchronous motor (PMSM) is widely used in many fields because of its simple structure, high power density, high control efficiency and easy control.Especially in household appliance industry, PMSM is gradually used in our daily fan.Therefore, it is of great significance to develop a control scheme of PMSM with high efficiency and low cost.The installation of permanent magnet synchronous motor position sensor reduces the reliability of the system and increases the cost of motor installation and maintenance.In order to reduce the cost and improve the reliability of the system, position sensorless technology will be the focus of future research.Fan system is not demanding to the dynamic performance of the controller, and position sensorless technology is the first choice.In this paper, position sensorless technology is applied to PMSM control to reduce system cost.This system takes 200W permanent magnet synchronous motor (PMSM) as the research object, adopts the NM1100 chip of Xintang as the control core and the algorithm of no-position sliding mode observer, designs the position free control system of PMSM.The main contents of this graduation design are as follows: (1) the vector control method of permanent magnet synchronous motor (PMSM) is studied, and based on the mathematical model of PMSM in three-phase stationary coordinate system,The mathematical model of permanent magnet synchronous motor (PMSM) in two-phase rotating d-q coordinate system is established by the principle of vector control coordinate transformation. The starting strategy of PMSM position sensorless technology is studied.The problem of low identification of PMSM at low speed is solved.Predefined position method solves the problem of motor starting position recognition, and secondary positioning solves the problem of startup failure.In order to solve the problem that the observer can not be observed at low speed, the theory of sliding mode variable structure control is analyzed by using V / F control to control the speed of the lifting motor.Based on the sliding mode variable structure theory, a sliding mode observer is designed.The sensorless permanent magnet synchronous motor (PMSM) system based on sliding mode observer is simulated in MATLAB. The feasibility of the system is verified by the obtained simulation waveform.The drive system hardware circuit of PMSM is designed for 200W fan, and the software algorithm is programmed with NM1100 as the core.A position sensorless technology experiment platform of PMSM is built and the experimental waveform is measured. The reliability of the system is verified on the premise of the experimental waveform.
【學位授予單位】：江蘇大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341

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本文編號：1762722