| 变频调速原理及变频方案可靠性的分析 |
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| 引用本文： | 屈维谦,王久和. 变频调速原理及变频方案可靠性的分析[J]. 北京机械工业学院学报, 2008, 23(2): 28-31 |
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| 作者姓名： | 屈维谦 王久和 |
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| 作者单位： | [1]北京内达调速科技有限公司,北京100080 [2]北京信息科技大学自动化学院,北京100192 |
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| 基金项目： | 北京市教育委员会科技计划重点项目，北京市自然科学基金，北京市属市管高等学校拔尖创新人才计划项目 |
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| 摘 要： | 从效率角度分析了变频调速原理，论述了一种能够实现高效率交流电机调速的P理论及相应的变频调速的功率控制原理。指出了变压器、绝缘栅极型功率管（IGBT）直接串联、多电平串联3种高压变频方案的优缺点，分析了高压变频调速方案的可靠性。经对变频调速中击穿IGBT的解剖研究，得出基于IGBT变流器件变频调速不适宜（6～10kV）高压大功率异步机。对于高压的交流调速，基于转子的低压控制应该引起充分的重视。
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| 关 键 词： | 调速 功率控制原理 变频调速原理 高压变频调速方案 可靠性 |
Principle of frequency-changing speed control and reliability of its scheme |
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| QU Wei-qian,WANG Jiu-he. Principle of frequency-changing speed control and reliability of its scheme[J]. Journal of Beijing Institute of Machinery, 2008, 23(2): 28-31 |
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| Authors: | QU Wei-qian WANG Jiu-he |
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| Affiliation: | QU Wei-qian ,WANG Jiu-he ( 1. Beijing Neida Speed-regulation Co. Ltd. , Beijing 100080, China; 2. School of Automation, Beijing Information Science and Technology University, Beijing 100192 ,China) |
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| Abstract: | This paper analyses the principle of frequency-changing speed control of AC-motor. A power control theory in realizing high-efficiency in speed control of AC-motor and the corresponding principle of frequency-changing speed control are elaborated. High voltage frequency changing scheme including transformer,direct series of IGBT and series of multi-electric level are reviewed. The reliability of the scheme is also analszed and the punctured IGBT is dissected. It is concluded that frequency-changing speed control with IGBT is not applicable to high voltage （6 - 10 kV）AC-motor. Consequently low voltage control of rotor calls for adequate attention for high voltage speed control of AC-motor. |
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| Keywords: | adjustable speed principle of power control principle of frequency changing speed control frequency changing speed control scheme of high voltage reliability |
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