【摘要】：在功率等級、調速性能和可靠性要求苛刻場合，傳統(tǒng)三相異步電機無法滿足實際需求。而多相永磁同步電機因其具有高功率密度、轉矩脈動小、可靠性高等優(yōu)點，具有廣闊的發(fā)展空間。本文以雙三相永磁同步電機為研究對象，分析雙三相永磁同步電機的多維空間矢量調制技術、矢量控制和直接轉矩控制技術，然后研究了一種新的單逆變器驅動多臺電機的電路拓撲結構。 首先，建立雙三相永磁同步電機的矢量空間解耦數學模型。傳統(tǒng)SVPWM技術只控制α-β平面的參考電壓矢量，忽視了x-y平面的參考電壓矢量，導致x-y平面產生較大的電流諧波，增加電機銅耗，影響電機控制性能。本文基于多維空間矢量調制的思想，研究了最大四矢量SVPWM技術和最大兩矢量與次大兩矢量SVPWM技術，可以同時嚴格控制α-β平面和x-y平面的參考電壓矢量。仿真結果表明，這兩種SVPWM控制算法不僅能夠提高直流母線電壓利用率，而且還能消除x-y平面的5、7次諧波，使輸出電壓呈純正弦變化。 然后，研究了雙三相永磁同步電機多電機串聯驅動控制技術。將兩臺雙三相永磁同步電機定子繞組通過合理的相序轉換規(guī)則串聯在一起，用一臺六相電壓源型逆變器進行驅動控制。為了實現兩臺電機獨立運行，本文采用一種具有雙調制器的SVPWM控制策略，在單逆變器供電下，輸出相電壓僅包含兩臺串聯電機各自所需的電壓基波分量，，實現兩臺串聯電機的解耦控制。仿真結果表明：改變串聯系統(tǒng)中任意一臺電機的轉速或負載，對另一臺電機的運行并無影響，理論分析與仿真結果一致，驗證了方案的正確性和可行性。
[Abstract]:The traditional three-phase asynchronous motor can not meet the actual demand in the situation of demanding power grade, speed regulation performance and reliability. Multiphase permanent magnet synchronous motor (PMSM) has wide development space because of its advantages of high power density, low torque ripple and high reliability. In this paper, the multi-dimensional space vector modulation technology, vector control and direct torque control technology of dual-three-phase permanent magnet synchronous motor are analyzed. Then a new circuit topology of single inverter driving multiple motors is studied. Firstly, the vector space decoupling mathematical model of dual three-phase permanent magnet synchronous motor is established. The traditional SVPWM technique only controls the reference voltage vector of 偽-尾 plane, but neglects the reference voltage vector of x-y plane, which results in large current harmonics in the x-y plane, increases the copper consumption of the motor and affects the control performance of the motor. Based on the idea of multidimensional space vector modulation, the maximum four-vector SVPWM technique and the maximum two-vector and sub-large two-vector SVPWM technique are studied in this paper. The reference voltage vectors of the 偽-尾 plane and the x-y plane can be strictly controlled at the same time. The simulation results show that the two SVPWM control algorithms can not only improve the utilization ratio of DC bus voltage, but also eliminate the 57th harmonic of x-y plane, and make the output voltage change with pure sine. Then, the control technology of double-three-phase permanent magnet synchronous motor (PMSM) is studied. The stator windings of two dual-three-phase permanent magnet synchronous motor (PMSM) are connected in series by a reasonable phase-sequence conversion rule, and a six-phase voltage source inverter is used to drive and control the stator windings. In order to realize the independent operation of two motors, an SVPWM control strategy with double modulators is adopted in this paper. Under the power supply of single inverter, the output phase voltage contains only the fundamental components of the voltage required by each of the two series motors. The decoupling control of two series motors is realized. The simulation results show that changing the speed or load of any motor in the series system has no effect on the operation of the other motor. The theoretical analysis is consistent with the simulation results, and the correctness and feasibility of the scheme are verified.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM341

【參考文獻】

相關期刊論文 前6條

1 劉陵順;張海洋;苗正戈;;雙Y移30°永磁同步電機串聯系統(tǒng)矢量控制仿真[J];兵工自動化;2011年09期

2 楊金波;楊貴杰;李鐵才;;雙三相永磁同步電機的建模與矢量控制[J];電機與控制學報;2010年06期

3 王雪松;趙爭鳴;袁立強;魯挺;;應用于大容量變換器的IGBT并聯技術[J];電工技術學報;2012年10期

4 史賢俊;劉陵順;周紹磊;;SVPWM-DTC控制兩臺雙Y移30°永磁同步電動機串聯系統(tǒng)研究[J];電氣自動化;2013年02期

5 劉軍,劉丁,吳浦升,白華煜;基于模糊控制調節(jié)電壓矢量作用時間策略的永磁同步電機直接轉矩控制仿真研究[J];中國電機工程學報;2004年10期

6 孟超;歐陽紅林;劉偉候;王銘;;雙Y移30°永磁同步電機的空間矢量調制[J];中國電機工程學報;2010年03期

相關博士學位論文 前1條

1 郝振洋;六相永磁容錯電機及其控制系統(tǒng)的設計和研究[D];南京航空航天大學;2010年

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