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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

Series: Informatik/ Kommunikation

Volume 851 2017

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Introduction S. 1-16

„… from the supply’s input power than that working in a switching state, the input and output energy …” „… in the switching-mode power supply (see Fig.1.2), namely a power switch, which is rapidly switched …” „… electric energy of the power supply is transferred to the output device through the switching converter at …”

Titelei/Inhaltsverzeichnis

„… – Electromagnetic Interference – Switching Mode Power Supply – Chaotic Frequency Pulse Width Modulation Integrated …” „… electromagnetic interference (EMI) of switching mode power supply (SMPS). So far, the study on CCFM was focused …” „… commercial electrical products. Switching mode power supply (SMPS), with the features of high energy …”

Conclusion S. 93-94

„… switching frequency around the nominal value, the discrete harmonic power that usually exists in classical …” „… proved effective to reduce EMI of SMPS, there has been no commercial CCFM-based power supply. Therefore …” „… of power supply so far. The other chaos oscillators will be adopted to generate the modulation signal …”

Application of CCFM in LED Drivers S. 45-63

„… working condition of power supply is determined by the key elements, namely the transistor and the …” „… power supply input port (the pin 1), ground port (the pin 2) and the pin 3 providing the chaotic …” „… converter V12 The feedback circuit The power supply to PWM IC Figure. 4.4: The schematic of the flyback …”

References S. 95-106

„… Modulation for Improved EMC of Switching Mode Power Supply. Electrical Applications, 25(6):71–74, 2006. [78 …” „… . Farzanehfard, and J. Faiz. Classification and Comparison of EMI Mitigation Techniques in Switching Power …” „… . Classification and comparison of emi mitigation techniques in switching power converters - a review. Journal of …”

Digital Chaotic Frequency PWM IC S. 78-92

„… Experiments The experiments on the power supply shown in Fig.6.13 are also carried out. The spectra of the …” „… portability, and intellectuality, the digitally controlled power supplies are in a rapidly growing need. To …” „… systems, the emphasis is focused on the design of a chaotic switching period counter, and Logistic map …”

Chaotic Carrier Frequency Modulation Module S. 17-33

„… such as the supply’s power range, the transistor’s working characteristics, the converter topology. The …” „… Chua’s diode The practical circuit of NR is shown in Fig.2.8, where VDD is the power supply of the …” „… − RIVREF + RTvchaos RT + RI . (2.8) The switching frequency of power supplies is also related to vchaos and …”

Analogue Chaotic Frequency PWM IC S. 64-77

„… , (5.1) where VCC is the power supply of the chaos circuit, R1-R6 are resistors. R1 R2 upp 1 2 R5 R6 R3 R …” „… provide an efficient and economic solution for EMI suppression in power supplies. In this chapter, the …” „… that CCFM can be realized on SMPS for EMI suppression, without modifying the original circuit of power …”

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

Series: Informatik/ Kommunikation

Volume 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 …” „… 3842. Along with the development of IC and power semiconductor technology, switching converters have …”

Titelei/Inhaltsverzeichnis

„… 978-3-18-385010-5, ISSN 0178-9627, ¤ 43,00/VDI-Mitgliederpreis ¤ 38,70. Keywords: Switching power supply – Switching …” „… Conclusions 88 References 90 VI Abstract A switching power supply, namely switching converter, which is …” „… switching power supply makes use of the pulse-width modulation (PWM) technology to control the nonlinear …”

References S. 90-100

„… . Pressman. Switching power supply design. McGraw-Hill, Inc., 1997. [3] B. Vtezslav, G. John, and A. Duncan …” „… technology for switching power supply. Low Voltage Apparatus, 19, 2008. [30] K. Tse, R. Ng, H. Chung, and S …” „… of the degradation of MOSFETs in switching mode power supply by characterizing source oscillator …”

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

„… includes the physical failure model and the statistics analysis. The switching power supply has already …” „… high-efficiency. However, the switching power device has a more potential disability because it works at a higher …” „… in 2011[66]. This chapter studies the service life or remaining useful life of a power supply under …”

Tests of Input and Output Characteristics S. 83-87

„… Characteristics Switching converters normally make use of single-phase two-wire power as the input. The AC …” „… power supply has been tested under normal PWM control and chaotic PWM control, respectively. It shows …” „… experimental tests about the effects of the chaotic modulation on efficiency, power factor, current harmonics …”

Realizing Chaotic Duty Modulation S. 44-56

„… PC’s power supply ATX2.0. is adopted to be the test bed. ATX2.0 has a typical integrated circuit (IC …” „… of the fundamental component and its harmonics of the switching frequency [24]. Among the four modes …” „… spectrum and suppress EMI in the switching converters [17, 21, 22]. However, FMFD is limited in …”

doi.org/10.51202/9783186850102

Herwig Unger, Wolfgang A. Halang - Autonomous Systems 2016

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

Autonomous Systems 2016

Series: Informatik/ Kommunikation

Volume 848 2016

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Suppression of Disturbances S. 104-132

„… switching mode power supply (SMPS) has been increasingly widely applied in electric industry. However, rapid …” „… Carrier Frequency Modulation in Switching-mode Power Supply 105 The SMPS has to meet some basic …” „… vchaos. By Chaotic Carrier Frequency Modulation in Switching-mode Power Supply 107 adjusting R1-R4 …”

Titelei/Inhaltsverzeichnis

„… in Switching-mode Power Supply J. Niu, Y. Song, Z. Li and W. Halang …” „… 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 …”

doi.org/10.51202/9783186848109

VDI Wissensforum GmbH - LAND.TECHNIK 2016

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VDI Wissensforum GmbH (ed.)

LAND.TECHNIK 2016

Series: VDI-Berichte

Volume 2273 2016

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P. Lehmann, F. de Moraes Boos, N. Tarasinski Fail-safe power supply for x-by-wire systems in ag and construction machines S. 117-126

„… phase for a failure to occur in the electric system and thus in switching from the primary power supply …” „… Fail-safe power supply for x-by-wire systems in ag and construction machines Philipp Lehmann, M …” „… fail-operational. Nevertheless, any failure in the exclusive electric power supply of the given setup poses the …”

doi.org/10.51202/9783181022733

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VDI Wissensforum GmbH (ed.)

ELIV 2017

Series: VDI-Berichte

Volume 2299 2017

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K.-M. Fritsch, C. Schmuelling, T. Binder, M. Cramme Herausforderungen eines 48 V-Fahrantriebs mit 20 kW mechanischer Dauerleistung /Challenges of a 48 V drive system with 20 kW continuous mechanical power S. 85-86

„… International GmbH, Stuttgart Abstract MAHLE developed a high power electric drive system with 48 V supply …” „… system with 20 kW continuous mechanical power at 48 V supply voltage also comes with many challenges to …” „… , due to their advantages in switching losses. With a special power electronics design, up to 600 A rms …”

doi.org/10.51202/9783181022993

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