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Yuhong Song - Suppressing Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation

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Yuhong Song

Suppressing Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation

Series: Informatik/ Kommunikation

Volume 850 2017

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Realizing Chaotic Duty Modulation S. 44-56

„… 5 Realizing Chaotic Duty Modulation 5.1 Introduction Spread spectrum modulation is categorized as …” „… four modes [30–32]: pulse width modulation with variable duty and fixed cycle (PWM), pulse position …” „… modulation with variable position of the pulse and fixed cycle (PPM), frequency modulation with variable duty …”

Circuitry Design for Chaotic Modulation S. 14-22

„… 2 Circuitry Design for Chaotic Modulation 2.1 Introduction By normal PWM control, switching …” „… and current. Chaotic modulation can be applied to reduce EMI by spreading the discrete EMI energy to a …” „… suppressed by chaotic frequency modulation and chaotic duty modulation, followed by proposals how to …”

System Stability under Chaotic Duty Modulation S. 57-71

„… 6 System Stability under Chaotic Duty Modulation 6.1 Introduction The switching converter is a …” „… analyze the stability of boost converter with chaotic frequency modulation [53], and CaliskanV used CAM to …” „… how to maintain the system stability in a switching converter under chaotic modulation. 6.2 Circuit …”

The Remaining Useful Life under Chaotic Modulation S. 72-82

„… 7 The Remaining Useful Life under Chaotic Modulation 7.1 Introduction The service life is a …” „… the chaotic modulation. At present there is a lack of analysis for the effect of chaotic modulation on …” „… chaotic modulation influences the critical compo- 72 7.2 Failure Model of Critical Components nents …”

Introduction S. 1-13

„… switching frequency. The converters adopt the principle of pulse modulation to control the switching actions …” „… obtain stable outputs. Between the two ways, pulse-width modulation (PWM) is mostly applied in switching …” „… spread spectrum modulation [20–23]. a. Parameter Control This method refers to making the system chaotic …”

Titelei/Inhaltsverzeichnis S. I-VIII

„… Reihe 10 Suppressing Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation …” „… Suppressing Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation DISSERTATION zur …” „… Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation Yuhong Song, M. Sc., Yichang …”

Conclusions S. 88-89

„… EMI for application of switching converters. Chaotic modulation has been developed to suppress EMI of …” „… the EMI spectrum. Chaotic frequency modulation is most commonly reported for EMI suppression in …” „… designing circuitry parameters. Hence, this research aims at the chaotic duty modulation and probes into its …”

Effect of Central Frequency on EMI Reduction S. 30-43

„… previous chapter. This chapter is concerned with the effect of the central frequency on chaotic modulation …” „… . As one kind of spread spectrum modulation, the chaotic duty modulation is adopted to suppress …” „… being the most optimal for chaotic modulation or not can be estimated. 4.1 Introduction Due to the …”

Tests of Input and Output Characteristics S. 83-87

„… experimental tests about the effects of the chaotic modulation on efficiency, power factor, current harmonics …” „… of the latter. Hence, chaotic modulation will not affect the protection features. Meanwhile, safety …” „… regulations are neglected while analyzing the effect of chaotic modulation on system performance. Chaotic …”

References S. 90-100

„… modulation signals with different sources. Journal of FuJian University of Technology, 2004. [21] R. Yang and …” „… modulation schemes for DC/DC converters. Industrial Electronics, IEEE Transactions on, 47(2):253–263, 2000 …” „… modulation schemes for power converters. Power Electronics, IEEE Transactions on, 10(6):680–693, 1995. [27] D …”

Central Frequency of Chaotic Signals S. 23-29

„… 3 Central Frequency of Chaotic Signals 3.1 Introduction Chaotic modulation has been widely applied …” „… the spectrum can be spread through chaotic modulation due to the pseudo-randomness and the continuous …” „… suppression is related to the spectral characteristics of the chaotic signal used by the chaotic modulation …”

doi.org/10.51202/9783186850102

Junying Niu - Suppressing Electromagnetic Interference in Switching-Mode Power Supplies by Chaotic Carrier Frequency Modulation

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Junying Niu

Suppressing Electromagnetic Interference in Switching-Mode Power Supplies by Chaotic Carrier Frequency Modulation

Series: Informatik/ Kommunikation

Volume 851 2017

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Chaotic Carrier Frequency Modulation Module S. 17-33

„… 2 Chaotic Carrier Frequency Modulation Module Although a lot of chaotic modulation schemes have …” „… frequency modulation technique for EMI suppression in SMPS, but the SMPS with chaotic modulation has not yet …” „… products. To implement CCFM, the whole control circuit containing chaotic modulation circuit was designed …”

Introduction S. 1-16

„… . Spread-spectrum can be implemented just 6 1.4 Spread-Spectrum Techniques by attaching a modulation circuit for the …” „… principle of the spread-spectrum technique 1.4 Spread-Spectrum Techniques Periodic modulation, randomized …” „… modulation and chaotic modulation are commonly used spread-spectrum techniques. 1.4.1 Periodic Carrier …”

Titelei/Inhaltsverzeichnis S. I-VIII

„… Frequency Modulation Suppressing Electromagnetic Interference in Switching-Mode Power Supplies by Chaotic …” „… Carrier Frequency Modulation DISSERTATION zur Erlangung des akademischen Grades DOKTOR-INGENIEURIN der …” „… Supplies by Chaotic Carrier Frequency Modulation Junying Niu, M. Sc., Shanxi / China Informatik …”

Conclusion S. 93-94

„… modulation technique, which has been utilized in EMI suppression of SMPS. By chaotically dithering the …” „… , flexibility and universality to the frequency programmable PWM IC, a chaotic carrier frequency modulation …” „… increases several degrees when working under chaotic modulation. However, that does not disturb the …”

References S. 95-106

„… - Frequency Modulation Techniques for Conducted EMI Suppression in PWMConverters. Industrial Electronics, IEEE …” „… Switching Frequency Modulation. In Power Electronics Specialists Conference, 1993. PESC’93 Record., 24th …” „… . Gago. EMI Reduction in Switched Power Converters Using Frequency Modulation Techniques. Electromagnetic …”

Application of CCFM in LED Drivers S. 45-63

„… of chaotic modulation in SMPS can reduce EMI without weakening the system performance. 4.1 …” „… Introduction A lot of experimental research has been done to study the effect of chaotic modulation on the …” „… interference [51] with and without CCFM are compared to verify the effectiveness of chaotic modulation on EMI …”

Power Spectral Characteristics of CCFM-based Switching Converters S. 34-44

„… reduction depends on the PDF and the randomness, called modulation degree, of the switching period, which …” „… CCFM-based switching signal, it is revealed that the modulation degree and PDF of the switching period …” „… determine the effectiveness of chaotic modulation on EMI suppression. Coincided with the calculation results …”

Analogue Chaotic Frequency PWM IC S. 64-77

„… necessary to attach an auxiliary modulation circuit to the original product for implementing CCFM on SMPS …” „… analogue chaotic frequency PWM IC will be designed to facilitate the application of chaotic modulation, so …” „… chaotic modulation circuit has to be attached to PWM IC as a peripheral device, which is inconvenient for …”

Digital Chaotic Frequency PWM IC S. 78-92

„… design application specific integrated circuit (ASIC). To realize chaotic modulation on the digital …” „… , and Nc = xnRe+N. Here Re is defined as the modulation degree to transform the decimal xn to an integer …” „… make sure that the mean frequency under chaotic modulation is the same as that under the traditional …”

doi.org/10.51202/9783186851109

Herwig Unger, Wolfgang A. Halang - Autonomous Systems 2017

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Herwig Unger (ed.), Wolfgang A. Halang (ed.)

Autonomous Systems 2017

Series: Informatik/ Kommunikation

Volume 857 2017

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Yuhong Song, Zhong Li, Junying Niu, Wolfgang A. Halang Chaotic Central-frequency Modulation Effective for EMI Suppression in Switching Converters S. 166-173

„… 166 Chaotic Central-frequency Modulation Effective for EMI Suppression in Switching Converters …” „… electromagnetic interference (EMI) suppression in switching converters under chaotic duty modulation will be …” „… normally applied in chaos modulation to suppress EMI in switching converters by spreading the spectra of …”

Titelei/Inhaltsverzeichnis S. I-VI

„… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Chaotic Central-frequency Modulation Effective for EMI Suppression in Switching Converters Yuhong …”

doi.org/10.51202/9783186857101

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VDI-Z

Browse Volumes: VDI-Z

VDI-Z Volume 165 (2023) Issue 09 ISSN Online: 0042-1766

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Arnd Heckemeyer, Benjamin Bergmann, Berend Denkena Optimierung von Drehprozessen S. 40-42

„… Bearbeitung vor. Die Modulation wird durch die Form, das Intervall und die Amplitude definiert, siehe Bild 1 …” „… (Symbolbild): Modulationen der Schnittgeschwindigkeit sind geeignet, den Verschleiß bei der Zerspanung zu …” „… Forschenden am IFW mithilfe einer Modulation der Prozessstellgrößen.TEXT: Berend Denkena, Benjamin Bergmann …”

doi.org/10.37544/0042-1766-2023-09

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wt Werkstattstechnik online

Browse Volumes: wt Werkstattstechnik online

wt Volume 105 (2015) Issue 07-08 ISSN Online: 1436-4980

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E. Uhlmann, C. Bäcker Oberflächenstrukturierung von Zahnflanken*/Surface structuring of tooth flanks S. 487-494

„… Modulationen beim Profilschleifen auf die Ausbildung von Oberflächenstrukturen an Zahnflanken und die …” „… der systematischen Analyse von kinematischen Modulationen beim Verzahnungsschleifen zur gezielten …” „… strategies have been developed to structure the surface of tooth flanks. Using kinematic modulation in …”

doi.org/10.37544/1436-4980-2015-07-08

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