直流变频多联空调的EMC控制方法研究
发布时间：2019-05-14 23:21
【摘要】：近年来,随着计算机发展以及新型的电力电子功率元件的不断涌现,采用全控型的开关功率元件进行变频控制已成为空调电控的主流方式。这种控制方式在节能方面贡献突出,但却伴随着严重的电磁干扰。电磁干扰会降低空调设备的功率因数、增加电力损耗、干扰附近的电力电子设备、工业控制设备和通讯设备,甚至污染电网。所以,电磁干扰问题已受到空调业界的高度关注,不少商家制定了严苛的空调电磁兼容(EMC)标准,研究直流变频多联空调的电磁兼容控制方法势在必行。论文在描述电磁兼容基本概念和电磁干扰危害性的基础上,针对直流变频多联空调电磁兼容主要控制技术进行研究。针对辐射发射和传导骚扰的电磁兼容问题,论文从接地技术、滤波技术、开关电源设计方案以及软件抗干扰技术等四个方面进行了详细的分析和研究,探讨并提出了与辐射发射和传导骚扰电磁兼容问题相关的直流变频多联空调电路设计思路及方案、器件选型要求、安装方案以及有效的软件抗干扰措施。针对直流变频多联空调常见的谐波电流及电压闪烁抗扰问题以及浪涌抗扰问题进行了细致的分析,提出了具体的电路设计方案和措施。论文针对主要的空调电磁兼容项目—一辐射发射、传导骚扰、谐波电流测试、电压闪烁抗扰度以及浪涌抗扰度进行了试验,对试验数据进行了分析对比。试验表明,论文提出的各项目电磁兼容设计方案是正确可行的。在实际测试中,本司设计的直流变频多联空调达到了各项电磁兼容标准,满足产品需求。
[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.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB657.2;TN03
本文编号：2477129
[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.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB657.2;TN03
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