本文選題：IPMSM + 矢量控制　； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：永磁同步電機廣泛應(yīng)用于生活中的各個領(lǐng)域,在采用矢量控制的驅(qū)動控制系統(tǒng)中多使用位置傳感器定向轉(zhuǎn)子磁場位置、計算轉(zhuǎn)速。但由于安裝、環(huán)境等各方面因素的影響導(dǎo)致的位置傳感器故障,會造成系統(tǒng)停機等嚴(yán)重后果,在某些應(yīng)用領(lǐng)域需要使用位置傳感器容錯控制對故障進行處理。因此,研究永磁同步電機驅(qū)動系統(tǒng)位置傳感器的容錯控制具有重要意義。在位置傳感器故障的容錯控制領(lǐng)域,無位置傳感器算法等軟件容錯方法是當(dāng)前的研究熱點,本文針對位置傳感器斷路、碼道故障,在永磁同步電機矢量控制的基礎(chǔ)上,重點研究了無位置傳感器轉(zhuǎn)子位置估計算法、基于限幅值濾波器的碼道故障容錯方法以及基于后驗概率的斷路故障的容錯方法。主要研究內(nèi)容在于:1.研究永磁同步電機的數(shù)學(xué)模型,以及矢量控制算法,且通過仿真分析不同位置傳感器故障類型對系統(tǒng)的影響。2.針對各無位置傳感器轉(zhuǎn)子位置估計算法難以在全速段準(zhǔn)確辨識轉(zhuǎn)速的問題,采用將模型參考自適應(yīng)法(MRAS)法和高頻注入法相結(jié)合的方法,通過量化兩種算法在全速段的估計準(zhǔn)確度,將其分別用作高速段和低速段的轉(zhuǎn)子位置估計,仿真結(jié)果表明這種方法達(dá)到了在全速段實現(xiàn)轉(zhuǎn)子位置準(zhǔn)確估計的效果。3.位置傳感器斷路故障后,反饋轉(zhuǎn)速由位置傳感器采集位置所得轉(zhuǎn)速開關(guān)切換至估計轉(zhuǎn)速時,會造成系統(tǒng)振蕩甚至發(fā)散。本文研究了一種基于后驗概率復(fù)合轉(zhuǎn)速的斷路故障容錯控制方法,并針對該方法中先驗概率值,提出了一種基于極大似然投票的計算方法,通過仿真與實驗表明,該斷路故障容錯控制方法能有效抑制開關(guān)切換造成的系統(tǒng)振蕩,使系統(tǒng)在故障點的過渡更平穩(wěn)。4.針對位置傳感器碼道故障的容錯控制策略的設(shè)計,本文采用限幅值濾波器過濾數(shù)據(jù)壞點,消除碼道故障引起的系統(tǒng)波動。并提出了一種最大限幅周期值的整定方法,以最大限幅周期值為閥值,進行故障類型判斷,以此設(shè)計了綜合容錯控制策略,最終通過仿真與實驗驗證了該綜合容錯控制方法對位置傳感器多類故障的檢測與容錯的可行性與有效性�；趕imulink仿真與1.1kW內(nèi)埋式永磁同步電機實驗,驗證了本文的容錯控制策略能夠正確檢測出位置傳感器斷路及碼道故障,有效抑制碼道故障造成的系統(tǒng)波動,在斷路故障后亦能夠繼續(xù)穩(wěn)定運行,且故障前后過渡平穩(wěn)。
[Abstract]:Permanent magnet synchronous motor (PMSM) is widely used in all fields of life. In the drive control system using vector control, a position sensor is used to orientate the rotor's magnetic field position and calculate the speed of the rotor. However, the position sensor failure caused by the influence of various factors such as installation and environment will result in serious consequences such as system shutdown and some applications. The fault tolerant control of the position sensor is needed in the field. Therefore, it is of great significance to study the fault tolerant control of the position sensor of the permanent magnet synchronous motor drive system. On the basis of the vector control of permanent magnet synchronous motor, the rotor position estimation algorithm for sensorless sensor, fault tolerance method based on the amplitude limiting filter and the fault tolerance method based on the posterior probability are studied. The main research contents are as follows: 1. the mathematical model of permanent magnet synchronous motor is studied. And the vector control algorithm, and through the simulation analysis of the influence of different position sensor fault types to the system.2., aiming at the problem that the rotor position estimation algorithm of each position sensor is difficult to identify the speed accurately in the full speed section, the method of combining the model reference adaptive method (MRAS) method and high frequency injection method is adopted to quantify two kinds of calculation. The estimation accuracy of the method at the full speed section is used as the rotor position estimation of the high speed and low speed segments. The simulation results show that this method achieves the accurate estimation of the rotor position at the full speed section. After the.3. position sensor is broken down, the feedback speed is switched to the estimated rotation from the position sensor acquisition position to the estimated rotation. In this paper, a fault tolerant control method based on the posterior probability compound rotational speed is studied, and a method based on maximum likelihood voting is proposed for the prior probability value in this method. The simulation and experiment show that the fault tolerant control method can effectively suppress the open fault. The system oscillation caused by switch off makes the transition of the system more stable in the fault point and the design of the fault tolerant control strategy for the position sensor code channel fault. In this paper, the limit amplitude filter is used to filter the bad points of the data and eliminate the system fluctuation caused by the code fault. A method of setting the maximum amplitude cycle value is proposed, with the maximum limit cycle of the.4.. The period value is the threshold value and the fault type is judged, and a comprehensive fault tolerant control strategy is designed. Finally, the feasibility and effectiveness of the integrated fault tolerant control method for detecting and fault-tolerant position sensor fault detection and fault tolerance are verified by simulation and experiment. Based on the Simulink simulation and the 1.1kW embedded permanent magnet synchronous motor experiment, the paper validates this paper. The fault tolerant control strategy can correctly detect the fault of the position sensor circuit breaker and the code channel, effectively suppress the system fluctuation caused by the code fault, and can continue to run steadily after the breakdowns, and the transition is stable before and after the fault.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM341

【參考文獻】

相關(guān)期刊論文 前1條

1 王鳳翔;;永磁電機在風(fēng)力發(fā)電系統(tǒng)中的應(yīng)用及其發(fā)展趨向[J];電工技術(shù)學(xué)報;2012年03期

相關(guān)碩士學(xué)位論文 前1條

1 閆曉軍;光電編碼器的信號誤差補償和故障診斷研究[D];哈爾濱工業(yè)大學(xué);2011年

，

本文編號：2021194