基于预设载波的随机开关频率调制方法

王亭岭; 熊军华; 张瑾

基于预设载波的随机开关频率调制方法

1.
华北水利水电学院电力学院, 郑州 450011
2. 北京航空航天大学机械工程及自动化学院, 北京 100191
3. 中国科学院电工研究所, 北京 100190

详细信息

作者简介:
王亭岭(1975-),男,内蒙古呼盟人,副教授,wangtl@ncwu.edu.cn.

中图分类号: TM464
计量
- 文章访问数: 1991
- HTML全文浏览量: 162
- PDF下载量: 529
- 被引次数: 0
出版历程
- 收稿日期: 2012-02-23
- 网络出版日期: 2013-03-31

Random PWM method based on pre-determined carrier frequencies

1.
College of Electrical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
2. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
3. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 现有的随机开关频率调制方法未考虑载波切换频率与载波频率间的关系,因此会使逆变器输出交流电产生一定的谐波畸变.为了克服这一不足,通过分析载波切换频率对随机载波信号的影响,得出预置载波随机切换时,前后两条载波的相位不匹配是造成逆变器输出电压产生畸变的根本原因,并提出采用随机切换预设载波的方法实现开关频率的随机化.仿真及实验结果表明,随机脉冲宽度调制(PWM,Pulse Width Modulation)方法不但可以有效抑制输出电压的高次谐波而且在波形正弦度方面优于常规随机PWM方法.
- 逆变器 /
- 随机调制 /
- 音频噪声 /
- 谐波抑制
Abstract: For reported random frequency pulse width modulation(PWM) methods, harmonic distortion appears in the output waveform because the relationship between the carrier frequencies and their changing frequency is not carefully considered. To cope with the above obstacle, the effect of carrier changing frequency on the randomized carrier signals was investigated. A fact that phase mismatch of the two changing carrier signals induces the output voltage distortion was subsequently obtained. Then, a proposed approach was to select the switching frequency randomly among a few pre-determined carrier frequencies. Both simulation and experimental results verify that using the proposed PWM technique, the dominant harmonic clusters are effectively reduced while retaining good sinusoidal output waveforms, which are superior to that based on the conventional random PWM methods.
- inverter /
- random modulation /
- acoustic noise /
- harmonic suppression

HTML全文

参考文献(1)

[1] 马丰民,吴正国,李玉梅.随机频率PWM逆变器的分析设计[J].中国电机工程学报,2008,28(15):67-71 Ma Fengmin,Wu Zhengguo,Li Yumei.Analysis and design of the random frequency PWM inverters[J].Proceedings of the CSEE,2008,28(15):67-71(in Chinese) [2] 尹忠刚,钟彦儒,刘静,等.基于Markov链的变频调速系统随机PWM控制技术[J].电机与控制学报,2010,14(2):41-46 Yin Zhonggang,Zhong Yanru,Liu Jing,et al.Random PWM control technology of frequency control system based on Markov chain[J].Electric Machines and Control,2010,14(2):41-46(in Chinese) [3] Chang Yethen,Chen Boyuan,Lai Yenshin.Novel random switching PWM technique with constant sampling frequency and constant inductor average current for digital-controlled converter[C]//Energy Conversion Congress and Exposition.Arizona:IEEE,2011:2936-2943 [4] Boudjerda N,Boudouda A,Melit M,et al.Optimized dual randomized PWM technique for reducing conducted EMI in DC-AC converters[C]//EMC Europe 2011.New York:IEEE,2011:701-706 [5] Pedersen J K,Blaabjerg F.Digital quasi-random modulated SFAVM PWM in an AC-drive system[J].IEEE Transactions on Industrial Electronics,1994,41(5):518-525 [6] Trzynadlowski A M,Legowski S,Kirlin R L.Random pulse width modulation technique for voltage-controlled power inverters[J].International Journal of Electronics,1990,68(6):1027-1037 [7] Liaw C M,Lin Y M,Wu C H,et al.Analysis,design,and implementation of a random frequency PWM inverter[J].IEEE Transactions on Power Electronics,2000,15(5):843-854 [8] Trzynadlowski A M,Blaabjerg F,Pedersen J K,et al.Random pulse width modulation techniques for converter-fed drive systems-a review[J].IEEE Transactions on Industry Applications,1994,30(5):1166-1175 [9] Trzynadlowski A M,Zigliotto M,Bolognani S,et al.Reduction of the electromagnetic interference conducted to mains in inverter-fed AC drives using random pulse width modulation[C]//33rd IAS Annual Meeting.St.Louis,MO:IEEE,1998:739-744 [10] 王斌,李兴源,Khamlichi D K E.双随机调制技术及其功率谱密度特性分析[J].中国电机工程学报,2004,24(4):97-101 Wang Bin,Li Xingyuan,Khamlichi D K E.Analysis of power spectrum of a dual randomized modulation (DRM)[J].Proceedings of the CSEE,2004,24(4):97-101(in Chinese) [11] Bech M M,Blaabjerg F,Pedersen J K.Random modulation techniques with fixed switching frequency for three-phase power converters[J].IEEE Transactions on Power Electronics,2000,15(4):753-761 [12] Habetler T G,Divan D M.Acoustic noise reduction in sinusoidal PWM drives using a randomly modulated carrier[J].IEEE Transactions on Power Electronics,1991,6(3):356-363 [13] Tse K K,Chung H,Hui S,et al.A comparative investigation on the use of random modulation schemes for DC/DC converters[J].IEEE Transactions on Industrial Electronics,2000,47(2):253-263 [14] Chen H C,Chang Y C,Huang C K.Development of optimised carrier sequence in MCU-based random-frequency PWM[J].IET Electric Power Applications,2007,1:43-48

施引文献

资源附件(0)

访问统计