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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

Reihe: Informatik/ Kommunikation

Band 851 2017

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

„… 3 Power Spectral Characteristics of CCFM-based Switching Converters Since EMI can be estimated by …” „… measuring the PSD of the switching signal in the converter, the power spectral characteristics of the …” „… the CCFM-based switching converter has been studied in [18, 43, 55, 68, 69], which were normally based …”

References S. 95-106

„… . Classification and comparison of emi mitigation techniques in switching power converters - a review. Journal of …” „… . Tanaka, T. Ninomiya, and K. Harada. Random-Switching Control in DCto-DC Converters. In Power Electronics …” „… . Pedersen. Random Modulation Techniques with Fixed Switching Frequency for Three-Phase Power Converters. In …”

Application of CCFM in LED Drivers S. 45-63

„… converter based LED driver 4.3 Flyback Converter-Based LED Driver 4.3.1 Working Principle Due to the feature …” „… of 220V 48 4.3 Flyback Converter-Based LED Driver and 50Hz, is a constant current source, of which …” „… negative, so the diode D6 with a reverse voltage is off, and 50 4.3 Flyback Converter-Based LED Driver thus …”

Titelei/Inhaltsverzeichnis

„… .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3 Power Spectral Characteristics of CCFM-based Switching Converters 34 3.1 Introduction …” „… .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 4.3 Flyback Converter-Based LED Driver …” „… .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 4.4 Push-pull Converter-Based LED Driver …”

Introduction S. 1-16

„… electric energy of the power supply is transferred to the output device through the switching converter at …” „… power source and interfere with the operation of other equipments. As a result, the switching converter …” „… popular in recent years. These methods will be briefly reviewed as following. Switching converter Load EMI …”

Analogue Chaotic Frequency PWM IC S. 64-77

„… of the switching voltage in shift-phased full bridge converter Harmonic order 1 2 3 4 5 6 7 8 9 10 …” „… switching frequency can not be modulated. Hence, PWM IC with an internal chaotic frequency oscillator can …” „… the transistor, and finally output the switching signal on the transistor. Nevertheless, the analogue …”

Digital Chaotic Frequency PWM IC S. 78-92

„… switching frequency. A buck converter controlled by digital PID algorithm is employed as an example …” „… systems, the emphasis is focused on the design of a chaotic switching period counter, and Logistic map …” „… buck converter are conducted to verify the effectiveness of CDPWM IC on EMI reduction in the digitally …”

Chaotic Carrier Frequency Modulation Module S. 17-33

„… Switching converter Figure. 2.1: The circuit design of CCFM scheme based on PWM IC 17 2 Chaotic Carrier …” „… , namely the switching period of the converter, can be expressed as T = tc + td ≈ tc. (2.3) Q Q SET CLR S R …” „… by the chaos circuit, is conducted to the auxiliary circuit at the beginning of each switching period …”

Conclusion S. 93-94

„… switching converter with CCFM shows that the effectiveness of EMI suppression is determined by the …” „… switching frequency around the nominal value, the discrete harmonic power that usually exists in classical …” „… probability distribution and the randomness of the switching period. When the proposed module is used to …”

doi.org/10.51202/9783186851109

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

Reihe: Informatik/ Kommunikation

Band 850 2017

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Introduction S. 1-13

„… 1 Introduction 1.1 Switching Converters A power supply is the device which transforms the …” „… of AC, which is AC-AC converter. One switching mode power supply, namely a switching converter …” „… transistors to obtain a stable output. Hence, the technology of switching converters involves the circuit …”

Titelei/Inhaltsverzeichnis

„… 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

„… 9 Conclusions Switching converters play an important role in many fields. However, converters …” „… EMI for application of switching converters. Chaotic modulation has been developed to suppress EMI of …” „… the switching converter by dispersing the energy into a wide frequency band and smoothing the peaks of …”

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

„… the remaining useful life of switching converters. Firstly, from the failure modes of the switching …” „… Failure Model of Critical Components The failure of the switching converter possesses many modes, which …” „… critical components of the switching converter are the electrolytic capacitor and the transistor switch …”

References S. 90-100

„… . Hui. An evaluation of the spectral characteristics of switching converters with chaotic …” „… . Zhang. Quantification description of the chaotic PWM spectrum of the switching converter. Acta Physica …” „… References [1] L. Bert and P. Robert. Power converters and voltage regulators. Omnidirectional …”

System Stability under Chaotic Duty Modulation S. 57-71

„… 6 System Stability under Chaotic Duty Modulation 6.1 Introduction The switching converter is a …” „… ]. According to the classical control theory, the stability analysis of the switching converter is normally …” „… verify the stability of the soft-switch converter [54]. Because CAM focuses on the switching character …”

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

„… electromagnetic interference (EMI) in switching converters. Simulations and experiments are conducted to verify …” „… the switching frequency of the converter. Therefore, the effectiveness of chaotic modulation is …” „… suppression in switching converters under chaotic modulation. Simulation and experimental results have …”

Circuitry Design for Chaotic Modulation S. 14-22

„… [34–36]. This chapter presents a qualitative analysis to explain why EMI of switching converts can be …” „… modulation has been conducted to reduce EMI in switching converters [30, 36– 38], commonly by attaching a …” „… 2 Circuitry Design for Chaotic Modulation 2.1 Introduction By normal PWM control, switching …”

Tests of Input and Output Characteristics S. 83-87

„… interruption and boot impulse current. For a switching converter, protection functions through some sensors and …” „… the switching converter. Consequently, the output ripple resulting from chaotic modulation should be …” „… confined. By combining the converter function with other specific requirements of the switching converter …”

Realizing Chaotic Duty Modulation S. 44-56

„… spectrum and suppress EMI in the switching converters [17, 21, 22]. However, FMFD is limited in …” „… IC is commonly used in the switching converter, the proposed scheme possesses the practical …” „… of the fundamental component and its harmonics of the switching frequency [24]. Among the four modes …”

Central Frequency of Chaotic Signals S. 23-29

„… central frequency on EMI reduction in switching converters under chaotic modulation. 29 …”

doi.org/10.51202/9783186850102

Herwig Unger, Wolfgang A. Halang - Autonomous Systems 2017

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

Autonomous Systems 2017

Reihe: Informatik/ Kommunikation

Band 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 …” „… Introduction Switching converters are commonly applied in industry and daily life. However, the serious …”

Titelei/Inhaltsverzeichnis

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

Gerhard Sartorius Metrology and Machine Learning S. 88-104

„… of switching over to a reserve signal in the event of error. The effort which is necessary is …” „… measurement signal is transformed into a digital measurement value using an analog-to-digital converter (ADU …” „… , ÜF: transfer function, ADU: analog-digital-converter, DM: digital measuring data, W: value xxx,yy in …”

doi.org/10.51202/9783186857101

VDI Wissensforum GmbH - ELIV-MarketPlace 2022

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VDI Wissensforum GmbH (Hrsg.)

ELIV-MarketPlace 2022

Reihe: VDI-Berichte

Band 2405 2022

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Manuel Gärtner, Nadia Lecci New STi2GaNTM technology for ultra-fast switching automotive applications S. 121-132

„… switchingPoC also for new and innovative concepts for bidirectional 48V/12V DCDC converter and highly …” „… converterSiP – bidirectional 48V/12VController ProtectionDriver SiPower stage100V GaNPower stage in GaN …” „… - Bidirectional DC/DC converterSiP – bidirectional 48V/12VController ProtectionDriver SiPower stage100V GaNMain …”

M. Raimann New GaN based DC-DC converter concept for future fuel cell and charging applications S. 331-338

„… application scenarios. Due to the nature of those DC-DC converters (high switching frequency, moderate …” „… switching current) GaN transistors in combination with novel converter topologies enable both higher …” „… AGConclusionGaN transistors are an excellent choice for HV-HV DC-DC converters• Lower switching losses compared to …”

A. Berger An Advanced High-Efficiency Inverter with High Switching Frequencies to Improve Powertrain Efficiency and Performance S. 85-98

„… reduced or eliminated, the switching frequency of the converter can be increased and the system can enjoy …” „… losses of a converter vs. switching frequency under full-load condition [4] A new method of materially …” „… An Advanced High-Efficiency Inverter with High Switching Frequencies to Improve Powertrain …”

Titelei/Inhaltsverzeichnis

„… � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �79 S. Suo, KPIT Technology, Novi, MI, USAAn Advanced High-Efficiency Inverter with High Switching …” „… – Approaching parameter uncertainties for traction drive systems and DC/DC-converters in automotive HV …” „… GmbH, StuttgartNew STi2GaNTM technology for ultra-fast switching automotive applications …”

doi.org/10.51202/9783181024058

Herwig Unger, Wolfgang A. Halang - Autonomous Systems 2016

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

Autonomous Systems 2016

Reihe: Informatik/ Kommunikation

Band 848 2016

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Suppression of Disturbances S. 104-132

„… Switching Converters. Transactions of China Electrotechnical Society, 21(8):97–102, 2006. 116 J. Niu, Y …” „… L. Zhang. Research on the Enhanced Electromagnetic Compatibility of Switching Converter with Chaotic …” „… Chaotic Switching Scheme for Power Converters. In Power Electronics Specialists Conference, 2000. PESC 00 …”

Short Contributions S. 219-226

„… converters, which is based on a novel impedance source to overcome the drawbacks of traditional converters …” „… on smart grins. 224 Aperiodic Pulse Width Modulation in Power Converters for EMI Suppression Hong Li …” „… ) technique has been widely used in power converters owing to its simplicity and ability to generate the …”

Titelei/Inhaltsverzeichnis

„… fighting electromagnetic interferences in switching-mode power supplies by spreading the spectra of input …” „… suppression of electromagnetical interferences as exemplified for power converters by aperiodic pulse width …” „… in Switching-mode Power Supply J. Niu, Y. Song, Z. Li and W. Halang …”

doi.org/10.51202/9783186848109

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