發(fā)布時(shí)間：2018-05-07 22:14

  本文選題：異步牽引電機(jī) + 逆變電路��； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：近年來,我國根據(jù)國民經(jīng)濟(jì)發(fā)展需要,提出鐵路建設(shè)跨越式發(fā)展的總體思路。在這種背景下,我國機(jī)車車輛制造骨干企業(yè)通過引進(jìn)先進(jìn)技術(shù),進(jìn)行合作生產(chǎn),創(chuàng)造自主品牌的方式,研制了CRH系列高速動(dòng)車組。高速動(dòng)車組的驅(qū)動(dòng)力直接來自三相異步牽引電機(jī),因此對異步牽引電機(jī)的研究顯得尤為重要。找到一種對異步牽引電機(jī)可實(shí)現(xiàn)高精度的仿真方法對于開發(fā)和研究異步牽引電機(jī)來講有著重要意義。 本文以600kW大功率三相異步牽引電機(jī)為研究對象,提出了一種異步牽引電機(jī)場路耦合有限元仿真的方法。完成了基于SPWM供電和SVPWM供電,異步牽引電機(jī)場路耦合有限元仿真的研究,并對此異步牽引電機(jī)在兩種PWM供電方式下的運(yùn)行特性做了較為深入的對比分析。 本文首先簡單地介紹了有限元法計(jì)算電機(jī)的理論基礎(chǔ)和電磁場有限元仿真分析軟件Ansys Maxwell,并在Maxwell14環(huán)境下,建立了600kW異步牽引電機(jī)的有限元仿真二維模型。將該模型的仿真結(jié)果對比該電機(jī)在額定狀態(tài)下運(yùn)行的數(shù)據(jù),以來驗(yàn)證該電機(jī)有限元仿真模型的正確性。然后,分別介紹了SPWM逆變電路和SVPWM逆變電路的工作原理,并在Ansys Simplorer9環(huán)境下建立了SPWM逆變電路和SVPWM逆變電路的仿真模型。通過對不同制約條件下逆變電路輸出線電壓的諧波分布進(jìn)行對比分析,選擇最適方案,最終確定兩個(gè)逆變電路的調(diào)制參數(shù)和直流電壓。隨后利用Maxwell軟件中的異步牽引電機(jī)有限元模型配合以Simplorer軟件中的逆變電路模型,完成了基于兩種PWM (SPWM和SVPWM)供電異步牽引電機(jī)場路耦合有限元仿真。本文最后從直流電壓利用率、電流、損耗、轉(zhuǎn)矩和磁鏈等幾個(gè)方面對兩個(gè)仿真做了全面的對比分析。仿真結(jié)果驗(yàn)證了由PWM逆變器供電時(shí),給異步牽引電機(jī)帶來了不利影響；并體現(xiàn)了SVPWM供電方式對比于SPWM供電方式的優(yōu)勢。
[Abstract]:Abstract: in recent years, China has put forward the overall train of thought for the leaping development of railway construction in accordance with the needs of the national economic development. Under this background, China's locomotive and vehicle manufacturing backbone enterprises have developed a CRH series of high-speed EMU by introducing advanced technology, carrying out cooperative production and creating independent brands. The driving force of the high-speed EMU is direct. From the three phase asynchronous traction motor, it is very important to study the asynchronous traction motor. It is of great significance to find a high precision simulation method for asynchronous traction motor for the development and study of asynchronous traction motor.
In this paper, a 600kW high-power three-phase asynchronous traction motor is taken as the research object, and an asynchronous traction electric airport coupling finite element simulation method is proposed. The research on the coupling finite element simulation based on SPWM power supply and SVPWM power supply and asynchronous traction Airport Road coupling is completed, and the operation characteristics of the asynchronous traction motor under two kinds of PWM power supply modes are also studied. A comparatively thorough comparative analysis was made.
In this paper, the theoretical basis of the finite element method and the finite element simulation analysis software Ansys Maxwell for the electromagnetic field are introduced in this paper. The finite element simulation model of the 600kW asynchronous traction motor is established under the Maxwell14 environment. The simulation results of the model are compared with the data that the electric machine runs in the rated state. The correctness of the finite element simulation model of the motor is given. Then, the working principle of SPWM inverter circuit and SVPWM inverter circuit are introduced, and the simulation model of SPWM inverter circuit and SVPWM inverter circuit is established under the Ansys Simplorer9 environment. The harmonic distribution of the output line voltage of the inverter circuit is compared and analyzed under different constraints. The optimal scheme is selected and the modulation parameters and DC voltage of the two inverter circuits are determined. Then the asynchronous traction motor finite element model in the Maxwell software is combined with the inverter circuit model in the Simplorer software, and the finite element simulation of the asynchronous traction electric field coupling based on the two PWM (SPWM and SVPWM) power supply is completed. This paper makes a comprehensive comparison and analysis of the two simulations from the aspects of DC voltage utilization, current, loss, torque and magnetic chain. The simulation results verify that the power supply of PWM inverter has adverse effects on asynchronous traction motor, and shows the advantages of SVPWM power supply mode compared with the SPWM power supply mode.

【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM922.71

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本文編號(hào)：1858682