【摘要】：MC(Matrix Converter,矩陣變換器)是一種新型交-交變頻器,具有能量可雙向流動(dòng)、無(wú)中間大電感和大電容儲(chǔ)能環(huán)節(jié)、體積小、輸入功率因數(shù)能任意調(diào)節(jié)等顯著優(yōu)點(diǎn),因此在電力電子與電力傳動(dòng)行業(yè)中越來(lái)越受到國(guó)內(nèi)外眾多學(xué)者的關(guān)注。隨著電力電子開(kāi)關(guān)器件制造技術(shù)、應(yīng)用技術(shù)以及控制理論的快速發(fā)展,MC的研究日趨成熟,作為新興交-交變換器可替代傳統(tǒng)的交-交變換器;其應(yīng)用場(chǎng)合遍及電機(jī)驅(qū)動(dòng)、電機(jī)容錯(cuò)、航空作動(dòng)器、空間電源以及風(fēng)力發(fā)電等領(lǐng)域。MC逐步取代傳統(tǒng)交-直-交變換器的時(shí)代已經(jīng)到來(lái)。PMSM(Permanent Magnet Synchronous Motor,永磁同步電機(jī))體積小、效率高、功率密度高、結(jié)構(gòu)簡(jiǎn)單、節(jié)約能源,所以在工業(yè)、交通、軍事、航空等重要領(lǐng)域應(yīng)用廣泛。對(duì)于PMSM驅(qū)動(dòng)系統(tǒng)而言,磁場(chǎng)定向控制(Field Oriented Control,FOC)和直接轉(zhuǎn)矩控制(Direct Torque Control,DTC)是目前比較成熟的兩大控制方法。FOC的固有電流內(nèi)環(huán)的存在影響了驅(qū)動(dòng)系統(tǒng)響應(yīng)性能,相比較而言,DTC省去了坐標(biāo)變換,具有系統(tǒng)響應(yīng)快速的特點(diǎn),因而本文采用了DTC的方法與MC相結(jié)合。主要研究?jī)?nèi)容分為以下幾個(gè)方面:(1)對(duì)MC的基本結(jié)構(gòu)、工作原理進(jìn)行分析,用MC替代傳統(tǒng)交-直-交變換器,設(shè)計(jì)了PMSM DTC系統(tǒng),所設(shè)計(jì)的系統(tǒng)既保持了DTC快速響應(yīng)的特點(diǎn)又使系統(tǒng)輸入側(cè)的功率因數(shù)得到提高。(2)在系統(tǒng)負(fù)載轉(zhuǎn)矩和給定轉(zhuǎn)速變化的情況下設(shè)計(jì)了基于滑模變結(jié)構(gòu)速度控制器的MC驅(qū)動(dòng)PMSM DTC系統(tǒng)。所設(shè)計(jì)的系統(tǒng)對(duì)給定轉(zhuǎn)速變化有較好的抗擾動(dòng)能力。(3)為了達(dá)到更好的控制效果,在系統(tǒng)負(fù)載轉(zhuǎn)矩和給定轉(zhuǎn)速變化的情況下利用自抗擾技術(shù)又設(shè)計(jì)了基于自抗擾速度調(diào)節(jié)器的MC驅(qū)動(dòng)PMSM DTC系統(tǒng)。所設(shè)計(jì)的基于自抗擾速度調(diào)節(jié)器的系統(tǒng)對(duì)于負(fù)載轉(zhuǎn)矩變化和給定轉(zhuǎn)速變化均具有良好的抗擾動(dòng)能力。上述兩種方法所設(shè)計(jì)的速度調(diào)節(jié)器應(yīng)用于PMSM DTC系統(tǒng)中均能提高系統(tǒng)抗負(fù)載擾動(dòng)能力和跟蹤給定轉(zhuǎn)速變化的能力。與基于滑模變結(jié)構(gòu)控制速度調(diào)節(jié)器的系統(tǒng)相比,基于自抗擾速度調(diào)節(jié)器的系統(tǒng)具有更好的抗負(fù)載擾動(dòng)能力,能夠避免滑模變結(jié)構(gòu)控制系統(tǒng)固有抖振的缺點(diǎn)。最后,上述兩種方法通過(guò)幾個(gè)仿真實(shí)驗(yàn)驗(yàn)證了其可行性和有效性。
[Abstract]:MC (Matrix Converter, matrix converter is a new type of AC-AC converter, which has the advantages of bidirectional energy flow, no middle large inductance and large capacitance, small volume, and the input power factor can be adjusted arbitrarily. Therefore, more and more scholars at home and abroad pay attention to power electronics and power transmission industry. With the rapid development of power electronic switch device manufacturing technology, application technology and control theory, the research of MC has become more and more mature. As a new AC-AC converter, it can replace the traditional AC-AC converter. The era of replacing conventional AC-DC-AC converters in the fields of motor fault tolerance, aeronautical actuator, space power supply and wind power generation has arrived. PMSM (Permanent Magnet Synchronous Motor, permanent magnet synchronous motor (PMSM PMSM permanent magnet synchronous motor) is small in size, high in efficiency, high in power density and simple in structure. Energy conservation, so in industry, transportation, military, aviation and other important fields are widely used. For the PMSM drive system, the magnetic field oriented control (Field Oriented Control,FOC) and the direct torque control (Direct Torque Control,DTC) are two mature control methods. By comparison, the coordinate transformation is eliminated and the system response is fast. Therefore, the method of DTC is combined with MC in this paper. The main research contents are as follows: (1) the basic structure and working principle of MC are analyzed, and the PMSM DTC system is designed by replacing the traditional AC-DC-AC converter with MC. The designed system not only maintains the characteristics of DTC fast response but also improves the power factor of the input side of the system. (2) the MC driving PMSM DTC system based on the sliding mode variable structure speed controller is designed under the condition of the system load torque and the given speed change. The designed system has better anti-disturbance ability to the change of given rotational speed. (3) in order to achieve better control effect, The MC driving PMSM DTC system based on the ADRC is designed by using the active disturbance rejection technique under the condition of the load torque and the given speed change of the system. The designed system based on ADRC has good anti-disturbance ability for load torque change and given speed change. The speed regulator designed by the above two methods can improve the ability of resisting load disturbance and tracking the change of given speed in PMSM DTC system. Compared with the system based on sliding mode variable structure control speed regulator, the system based on ADRC has better resistance to load disturbance and can avoid the inherent chattering of sliding mode variable structure control system. Finally, the feasibility and effectiveness of the two methods are verified by several simulation experiments.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM341;TP273

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