【摘要】：開關(guān)磁阻電機(Switched Reluctance Motor,簡稱SRM)控制系統(tǒng),是融合控制策略、電機本體結(jié)構(gòu)、電力電子裝置等于一身的機電一體化系統(tǒng),具有結(jié)構(gòu)簡單、成本低,啟動性能好,可靠性高等優(yōu)點,已在在工業(yè)、航空、家電等領(lǐng)域得到了廣泛的推廣和應(yīng)用。現(xiàn)有對SRM電機的研究大多集中在控制算法和電機本體設(shè)計,然而,SRM的運行依賴于電機和控制器緊密結(jié)合的一體化驅(qū)動系統(tǒng)。所以單獨對電機的磁場進行分析或者對電機算法進行研究,無法真實反映電機的實際特征和控制性能。針對這一問題,本文提出建立電機磁場、功率驅(qū)動電路以及電機控制算法的混合仿真系統(tǒng),為電機控制性能的研究和電機設(shè)計提供一個基礎(chǔ)的模擬平臺。首先,建立SRM控制系統(tǒng)在Matlab環(huán)境下的數(shù)學(xué)模型,并通過對電機單相和兩相激磁的控制方法進行的起動運行進行了仿真驗證,證明了模型的正確性。建立了在Ansoft下的開關(guān)磁阻電機有限元分析模型,利用系統(tǒng)自帶的Maxwell Circuit Editor軟件搭建了理想化的驅(qū)動電路,模擬單相和兩相激磁的控制方法,并對其進行了內(nèi)部磁場的分析,通過對磁鏈波形、氣隙磁密分布等的分析,研究了電機不同激磁方式下的磁場情況以及各種損耗分析。其次,針對Matlab環(huán)境下功率器件的數(shù)學(xué)模型理想化的問題,建立了基于Simplorer與Matlab/Simulink混合仿真的模型,在考慮電力電子器件的開關(guān)特性基礎(chǔ)上,進行了電機控制算法的仿真研究。針對Ansoft下電機本體模型準(zhǔn)確但是驅(qū)動控制電路理想化的特點,建立了Simplorer與Ansoft的混合仿真模型,并對系統(tǒng)進行了驗證。最后,以Simplorer為連接的橋梁,在上述兩種混合仿真模型的基礎(chǔ)上,搭建了在Ansoft/Maxwell2D、Simplorer、Matlab/Simulink三個環(huán)境下SRM機電一體化控制系統(tǒng)的混合仿真系統(tǒng)。結(jié)果表明,該混合仿真,能真實、便捷的建立高飽和非線性的SRM本體模型,并對電機內(nèi)部電磁場的變化進行有限元分析;能模擬系統(tǒng)中功率變換器開關(guān)器件的開關(guān)特性;能直觀、方便的呈現(xiàn)SRM的控制器特性。
[Abstract]:The switched reluctance motor (Switched Reluctance Motor,) control system is a kind of electromechanical integration system, which has the advantages of simple structure, low cost, good startup performance and high reliability. In industry, aviation, home appliances and other fields have been widely promoted and applied. Most of the current research on SRM motor is focused on control algorithm and motor body design. However, the operation of SRM motor depends on the integration of motor and controller. Therefore, it can not reflect the actual characteristics and control performance of the motor by analyzing the magnetic field of the motor alone or studying the motor algorithm. To solve this problem, a hybrid simulation system of motor magnetic field, power drive circuit and motor control algorithm is proposed in this paper, which provides a basic simulation platform for motor control performance research and motor design. Firstly, the mathematical model of SRM control system under Matlab environment is established, and the correctness of the model is proved by the simulation of the control method of single-phase and two-phase excitation. The finite element analysis model of switched reluctance motor (SRM) under Ansoft is established. The ideal driving circuit is built by using the Maxwell Circuit Editor software of the system, and the control method of single-phase and two-phase excitation is simulated, and the internal magnetic field is analyzed. Based on the analysis of flux waveform and air gap magnetic density distribution, the magnetic field and loss analysis of motor with different excitation modes are studied. Secondly, aiming at the problem of idealized mathematical model of power device in Matlab environment, a hybrid simulation model based on Simplorer and Matlab/Simulink is established. Based on the switching characteristics of power electronic device, the simulation of motor control algorithm is carried out. A hybrid simulation model of Simplorer and Ansoft is established for the characteristics of accurate motor model under Ansoft but idealized drive control circuit, and the system is verified. Finally, the hybrid simulation system of SRM mechatronics control system under three environments of Ansoft/Maxwell2D,Simplorer,Matlab/Simulink is built on the basis of the above two hybrid simulation models based on the bridge connected by Simplorer. The results show that the hybrid simulation can set up the SRM body model with high saturation and nonlinearity, and analyze the change of electromagnetic field in the motor by finite element method, and can simulate the switching characteristics of the power converter switch device in the system. The controller features of SRM can be displayed intuitively and conveniently.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM352

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本文編號：2229396