本文選題：隔爆一體式電機 + 電磁兼容��； 參考：《沈陽工業(yè)大學》2014年博士論文

【摘要】：本文以教育部創(chuàng)新團隊項目、遼寧省教育廳創(chuàng)新團隊項目及撫順煤礦電機制造有限責任公司項目為背景，以1140V/75kW隔爆一體式電機為研究對象，針對煤礦作業(yè)空間狹窄及變頻調(diào)速系統(tǒng)與電機高度集成所帶來的驅(qū)動系統(tǒng)電磁兼容性、體積及成本等問題，開展了隔爆一體式電機電磁兼容等問題研究。論文的主要研究內(nèi)容包括以下幾個方面： （1）隔爆一體式電機為調(diào)速系統(tǒng)與變頻電機的集成系統(tǒng)，設計工作受到空間尺寸、電磁兼容性的制約。要使電力電子器件在有限的空間內(nèi)安全、穩(wěn)定運行，應著重考慮隔爆一體式電機的電磁兼容設計。本文首先研究一種改進的統(tǒng)一電壓調(diào)制策略，取消零矢量的作用效果，減小隔爆一體式電機調(diào)速系統(tǒng)的共模電壓，并且該調(diào)制算法無需判斷扇區(qū)，易于實現(xiàn)，節(jié)約系統(tǒng)資源；同時，采用阻斷IGBT與散熱器之間的電磁耦合路徑，減少調(diào)速系統(tǒng)的共模干擾；采用層疊母線技術(shù)代替?zhèn)鹘y(tǒng)母排的方法減小線路雜散電感，進而減少調(diào)速系統(tǒng)的電磁干擾；采用基于電力電子系統(tǒng)建模的方案，應用最大能量吸收法計算IGBT吸收電容值，對由IGBT開斷過程中產(chǎn)生的尖峰電壓進行抑制；提出一種4級電容拓撲結(jié)構(gòu)，為高頻諧波提供低阻抗回路，使其直接通過電容回到設備中，而不污染電網(wǎng)。 （2）針對變頻調(diào)速系統(tǒng)產(chǎn)生的空間諧波及時間諧波不利于電網(wǎng)及變頻電機穩(wěn)定運行問題。本文在輸入端采用進線電抗器，濾除電網(wǎng)諧波電流，減少調(diào)速系統(tǒng)對電網(wǎng)諧波的干擾，提出一種基于電力電子系統(tǒng)建模的進線電抗器上限值計算方案，該方案與傳統(tǒng)計算方案比較，可明顯縮小進線電抗器體積；同時，，考慮到隔爆一體式電機負載經(jīng)常發(fā)生變化，導致諧波發(fā)生變化，本文研究一種在輸出端采用變感式電抗器的諧波抑制技術(shù)，該方案可根據(jù)負載變化調(diào)節(jié)電抗器電感量，達到抑制諧波的目的。 （3）為進一步抑制由整流帶來的諧波，減少部分電子元器件的電磁輻射干擾，進一步縮小隔爆一體式電機的體積，提高系統(tǒng)穩(wěn)定性。本文運用虛擬磁鏈電壓重構(gòu)技術(shù)，估計電網(wǎng)側(cè)交流電壓，替代交流電壓傳感器，增強系統(tǒng)可靠性；另一方面，隔爆一體式電機的PWM整流控制系統(tǒng)PI參數(shù)的整定一方面浪費大量的時間，同時若PI參數(shù)調(diào)節(jié)不當，將給系統(tǒng)帶來不可估量的安全隱患。為此，本文提出基于蟻群算法的PI參數(shù)整定方案，該方案可節(jié)約實驗過程中由PI參數(shù)調(diào)整浪費的時間，避免由PI參數(shù)調(diào)整帶來的安全隱患。 （4）變頻調(diào)速感應電動機的設計較傳統(tǒng)感應電動機的設計有很大不同。其設計方案不但需要考察電動機的效率、功率因數(shù)、最大轉(zhuǎn)矩等性能參數(shù)在整個調(diào)速范圍內(nèi)的數(shù)值，還要兼顧到電動機的動態(tài)性能。本文從變頻調(diào)速系統(tǒng)的角度出發(fā)，針對變頻供電的諧波分析模型，綜合考慮變頻電機本身空間諧波及時間諧波的抑制技術(shù)進行電機優(yōu)化設計，增強變頻調(diào)速感應電動機的抗諧波能力。在此基礎上，對隔爆一體式電機樣機展開設計研究，研制1140V/75kW隔爆一體式電機一臺，搭建了實驗平臺，驗證采用本文所提出方案、設計的隔爆一體式電機的可行性。
[Abstract]:Based on the innovation team project of the Ministry of education, the innovation team project of the Liaoning provincial education department and the project of the Fushun Coal Mine Motor Manufacturing Co., Ltd., the 1140V/75kW flameproof integrated motor is taken as the research object, and the electromagnetic compatibility of the driving system caused by the narrow coal mine operation space and the integration of the frequency conversion speed regulation system and the motor high degree is presented. Research on electromagnetic compatibility of flameproof integrated Motors has been carried out.
(1) the flameproof integrated motor is an integrated system of the speed control system and the frequency conversion motor. The design work is restricted by the space size and electromagnetic compatibility. To make the power electronic devices safe and stable in the limited space, the electromagnetic compatibility design of the flameproof integrated motor should be taken into consideration. The strategy is to eliminate the effect of zero vector, reduce the common mode voltage of the flameproof motor speed control system, and the modulation algorithm is easy to realize and save the system resources without judging the sector. At the same time, the electromagnetic coupling path between IGBT and the radiator is blocked, and the common mode interference of the speed regulation system is reduced. The traditional bus method reduces the stray inductance of the line and reduces the electromagnetic interference of the speed control system. Using the scheme based on the power electronic system modeling, the maximum energy absorption method is used to calculate the IGBT absorption capacitance value, and the peak voltage produced in the IGBT opening process is suppressed. A 4 stage capacitor topology is proposed, which is the high frequency harmonic. A low impedance loop is provided to return it directly through the capacitor to the device without polluting the power grid.
(2) the space harmonics and time harmonics produced by the variable frequency speed control system are not conducive to the stable operation of the power grid and the frequency conversion motor. In this paper, the input line reactor is used in the input terminal to filter the harmonic current of the power grid and reduce the interference of the speed control system to the harmonic of the power grid. A formula for the upper limit value of the line reactor based on the power electronic system modeling is proposed. Compared with the traditional calculation scheme, the scheme can obviously reduce the volume of the line reactor. At the same time, considering the change of the load of the flameproof motor, the harmonic suppression technique is used in the output terminal, which can adjust the inductance of the reactor according to the change of the load. The purpose of suppressing harmonics is to be achieved.
(3) in order to further restrain the harmonic caused by rectification, reduce the electromagnetic radiation interference of some electronic components, reduce the volume of the flameproof integrated motor and improve the stability of the system, this paper uses the virtual magnetic chain voltage reconfiguration technology to estimate the AC voltage on the grid side, instead of the AC voltage sensor and enhance the reliability of the system; on the other hand, The PI parameter tuning of the PWM rectifier control system of a flameproof integrated motor is a waste of a large amount of time. At the same time, if the PI parameters are not properly adjusted, the system will bring inestimable hidden danger to the system. Therefore, this paper proposes a PI parameter tuning scheme based on ant colony algorithm. This scheme can adjust the waste time from the PI parameter in the experiment process and avoid the waste time. Avoid security risks caused by PI parameters adjustment.
(4) the design of induction motor with variable frequency speed regulation is very different from that of traditional induction motor. The design scheme not only needs to inspect the efficiency of motor, power factor, maximum torque and other performance parameters in the whole speed range, but also take into account the dynamic performance of the motor. This paper starts with the angle of frequency conversion speed regulation system. In view of the harmonic analysis model of variable frequency power supply, the design of the motor is designed in consideration of the suppression technology of the space harmonics and time harmonics of the frequency conversion motor, and the anti harmonic ability of the induction motor is enhanced. On this basis, the design of the flameproof motor prototype is developed and the 1140V/75kW flameproof integrated motor is developed. An experimental platform was built to verify the feasibility of the design of the flameproof integrated motor.

【學位授予單位】：沈陽工業(yè)大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TM357

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