發(fā)布時(shí)間：2018-02-24 12:47

  本文關(guān)鍵詞： 內(nèi)置式永磁同步電機(jī) 矢量控制 弱磁控制 模糊控制　出處：《湖南工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：內(nèi)置式永磁同步電機(jī)由于具有高功率密度、高可靠性和高效率等特點(diǎn)而廣受關(guān)注,但在弱磁控制運(yùn)行過(guò)程中,由于電樞反應(yīng)導(dǎo)致的參數(shù)變化使得轉(zhuǎn)矩和速度波動(dòng)加大。模糊控制有利于提高系統(tǒng)的穩(wěn)定性且不依賴系統(tǒng)參數(shù),本文將模糊控制引入到內(nèi)置式永磁同步電機(jī)弱磁控制系統(tǒng)中,設(shè)計(jì)參數(shù)自整定模糊PI調(diào)節(jié)器,構(gòu)建內(nèi)置式永磁同步電機(jī)模糊PI弱磁新型算法,提高系統(tǒng)的穩(wěn)態(tài)特性和抗干擾能力。通過(guò)分析內(nèi)置式永磁同步電機(jī)結(jié)構(gòu)特征建立了數(shù)學(xué)模型,介紹了矢量控制和弱磁控制的基本原理。研究了電樞反應(yīng)對(duì)電機(jī)主要參數(shù)的影響,進(jìn)而分析考慮參數(shù)變化的內(nèi)置式永磁同步電機(jī)弱磁特性。搭建了內(nèi)置式永磁同步電機(jī)傳統(tǒng)PI弱磁算法仿真模型,通過(guò)對(duì)比不同負(fù)載干擾條件下仿真結(jié)果,仿真實(shí)驗(yàn)表明傳統(tǒng)PI弱磁控制系統(tǒng)轉(zhuǎn)矩和轉(zhuǎn)速有較大的擾動(dòng)和過(guò)沖,系統(tǒng)穩(wěn)態(tài)特性和抗干擾性能較差。將模糊邏輯理論與PI策略相結(jié)合,設(shè)計(jì)了參數(shù)自整定模糊PI調(diào)節(jié)器,代替速度環(huán)和電流環(huán)上傳統(tǒng)固定增益PI調(diào)節(jié)器,構(gòu)建了模糊PI弱磁算法,使系統(tǒng)能夠根據(jù)實(shí)時(shí)工況在線調(diào)整PI參數(shù)。搭建了內(nèi)置式永磁同步電機(jī)模糊PI弱磁控制仿真模型,通過(guò)對(duì)比不同負(fù)載干擾條件下模糊PI弱磁算法與傳統(tǒng)PI弱磁算法仿真結(jié)果,仿真實(shí)驗(yàn)表明,模糊PI弱磁算法與傳統(tǒng)PI弱磁算法相比在轉(zhuǎn)矩穩(wěn)定度上提高了9%,在速度穩(wěn)定度上提高了2%,在電流穩(wěn)定度上提高了10%,轉(zhuǎn)矩和轉(zhuǎn)速波動(dòng)得到了明顯抑制,因此模糊控制能夠提高系統(tǒng)的穩(wěn)態(tài)特性和抗干擾性能�；�于STM32硬件調(diào)速平臺(tái)設(shè)計(jì)了內(nèi)置式永磁同步電機(jī)弱磁調(diào)速系統(tǒng)軟件算法,通過(guò)對(duì)比不同負(fù)載干擾條件下弱磁實(shí)驗(yàn)結(jié)果,實(shí)驗(yàn)結(jié)果表明系統(tǒng)具有很好的穩(wěn)態(tài)特性和較強(qiáng)的抗干擾能力,達(dá)到理論設(shè)計(jì)指標(biāo),具有較強(qiáng)的工業(yè)應(yīng)用能力。
[Abstract]:Built-in permanent magnet synchronous motor (PMSM) has attracted much attention because of its high power density, high reliability and high efficiency. Due to the variation of parameters caused by armature reaction, torque and velocity fluctuations are increased. Fuzzy control is beneficial to improve the stability of the system and does not depend on the system parameters. In this paper, fuzzy control is introduced into the built-in permanent magnet synchronous motor (PMSM) weak magnetic control system. A new fuzzy Pi weak magnetic field algorithm for built-in permanent magnet synchronous motor (PMSM) is constructed by designing parameter self-tuning fuzzy Pi regulator to improve the steady-state characteristic and anti-interference ability of the system. A mathematical model is established by analyzing the structural characteristics of the built-in PMSM. The basic principles of vector control and magnetic weakening control are introduced. The influence of armature reaction on the main parameters of motor is studied. Then, the magnetic weakening characteristics of the built-in permanent magnet synchronous motor (PMSM) are analyzed, and the simulation model of the traditional Pi weakening algorithm of the PMSM is built, and the simulation results under different load interference conditions are compared. The simulation results show that the torque and speed of the traditional Pi weak magnetic control system have great disturbance and overshoot, and the steady-state characteristic and anti-jamming performance of the system are poor. The fuzzy logic theory and Pi strategy are combined to design the parameter self-tuning fuzzy Pi controller. Instead of the traditional fixed gain Pi regulator on the speed loop and current loop, a fuzzy Pi weak magnetic field algorithm is constructed, which enables the system to adjust Pi parameters online according to the real time working conditions. The simulation model of the built-in permanent magnet synchronous motor fuzzy Pi weak magnetic field control is established. By comparing the simulation results of the fuzzy Pi weak magnetic algorithm with the traditional Pi weak magnetic field algorithm under different load interference conditions, the simulation results show that, Compared with the traditional Pi weak magnetic field algorithm, the fuzzy Pi weak magnetic field algorithm improves the torque stability by 9 percent, the speed stability by 2 percent, the current stability by 10 percent, and the torque and rotational speed fluctuation obviously. Therefore, fuzzy control can improve the steady-state characteristic and anti-interference performance of the system. Based on the STM32 hardware speed control platform, the software algorithm of the built-in permanent magnet synchronous motor (PMSM) weak magnetic speed regulation system is designed. The results of the weak magnetic field experiment under different load interference conditions are compared. The experimental results show that the system has good steady-state characteristic and strong anti-interference ability, which meets the theoretical design target and has strong industrial application ability.
【學(xué)位授予單位】：湖南工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM341

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