發(fā)布時間：2019-05-14 23:21

【摘要】：近年來,隨著計算機(jī)發(fā)展以及新型的電力電子功率元件的不斷涌現(xiàn),采用全控型的開關(guān)功率元件進(jìn)行變頻控制已成為空調(diào)電控的主流方式。這種控制方式在節(jié)能方面貢獻(xiàn)突出,但卻伴隨著嚴(yán)重的電磁干擾。電磁干擾會降低空調(diào)設(shè)備的功率因數(shù)、增加電力損耗、干擾附近的電力電子設(shè)備、工業(yè)控制設(shè)備和通訊設(shè)備,甚至污染電網(wǎng)。所以,電磁干擾問題已受到空調(diào)業(yè)界的高度關(guān)注,不少商家制定了嚴(yán)苛的空調(diào)電磁兼容(EMC)標(biāo)準(zhǔn),研究直流變頻多聯(lián)空調(diào)的電磁兼容控制方法勢在必行。論文在描述電磁兼容基本概念和電磁干擾危害性的基礎(chǔ)上,針對直流變頻多聯(lián)空調(diào)電磁兼容主要控制技術(shù)進(jìn)行研究。針對輻射發(fā)射和傳導(dǎo)騷擾的電磁兼容問題,論文從接地技術(shù)、濾波技術(shù)、開關(guān)電源設(shè)計方案以及軟件抗干擾技術(shù)等四個方面進(jìn)行了詳細(xì)的分析和研究,探討并提出了與輻射發(fā)射和傳導(dǎo)騷擾電磁兼容問題相關(guān)的直流變頻多聯(lián)空調(diào)電路設(shè)計思路及方案、器件選型要求、安裝方案以及有效的軟件抗干擾措施。針對直流變頻多聯(lián)空調(diào)常見的諧波電流及電壓閃爍抗擾問題以及浪涌抗擾問題進(jìn)行了細(xì)致的分析,提出了具體的電路設(shè)計方案和措施。論文針對主要的空調(diào)電磁兼容項目—一輻射發(fā)射、傳導(dǎo)騷擾、諧波電流測試、電壓閃爍抗擾度以及浪涌抗擾度進(jìn)行了試驗(yàn),對試驗(yàn)數(shù)據(jù)進(jìn)行了分析對比。試驗(yàn)表明,論文提出的各項目電磁兼容設(shè)計方案是正確可行的。在實(shí)際測試中,本司設(shè)計的直流變頻多聯(lián)空調(diào)達(dá)到了各項電磁兼容標(biāo)準(zhǔn),滿足產(chǎn)品需求。
[Abstract]:In recent years, with the development of computer and the emergence of new power electronic power components, the use of fully controlled switching power elements for frequency conversion control has become the mainstream way of air conditioning electronic control. This control method contributes significantly to energy saving, but it is accompanied by serious electromagnetic interference. Electromagnetic interference can reduce the power factor of air conditioning equipment, increase power loss, interfere with nearby power electronic equipment, industrial control equipment and communication equipment, and even pollute the power grid. Therefore, the problem of electromagnetic interference (EMI) has been highly concerned by the air conditioning industry. Many businesses have formulated stringent (EMC) standards for electromagnetic compatibility of air conditioners. It is imperative to study the electromagnetic compatibility control methods of DC frequency conversion multimodal air conditioners. On the basis of describing the basic concept of electromagnetic compatibility and the harmfulness of electromagnetic interference, the main control technology of electromagnetic compatibility of DC frequency conversion multilink air conditioning is studied in this paper. Aiming at the electromagnetic compatibility of radiation emission and conduction disturbance, this paper makes a detailed analysis and research from four aspects: grounding technology, filtering technology, switching power supply design scheme and software anti-interference technology. This paper discusses and puts forward the design idea and scheme of DC frequency conversion multiconnection air conditioning circuit related to the electromagnetic compatibility of radiation emission and conduction disturbance, the requirements of device selection, the installation scheme and the effective software anti-interference measures. In this paper, the common problems of harmonic current and voltage flicker rejection and surge disturbance rejection in DC frequency conversion multimodal air conditioning are analyzed in detail, and the concrete circuit design schemes and measures are put forward. In this paper, the main electromagnetic compatibility items of air conditioning, such as radiation emission, conduction disturbance, harmonic current test, voltage flicker immunity and surge immunity, are tested, and the test data are analyzed and compared. The test results show that the electromagnetic compatibility design scheme proposed in this paper is correct and feasible. In the actual test, the DC frequency conversion multilink air conditioning designed by the company has reached various electromagnetic compatibility standards to meet the needs of the product.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB657.2;TN03

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