Suppressing electromagnetic interference of power converters based on 2×2-scroll chaotic PWM method

Li, H.; Yang, Zezhong; Dong, Yafei; Gao, Xing; Lu, Junlong

doi:10.1109/intmag.2015.7157289

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…Moreover, the changing curve of SBW 1 with ARV is shown in Fig.14, which indicates that the SBW 1 is becoming wider when the ARV is larger. To unify the spectral magnitude and SBW to one parameter expression, we define equivalent maximum energy (EME) to take into account both the magnitude and SBW of the spectrum, as shown in the (21), where A max_m is the maximum magnitude of the spectrum around the m•f sw under chaotic PWM.…”

Section: Influence Mechanism Of Mc-pwm Signals On Spectrum Distribmentioning

confidence: 99%

“…Traditionally, the discrete chaotic mappings are usually used in chaotic PWM as frequency modulated signals, but the chaotic signals generated by the discrete chaotic mappings have a strong jump characteristic, which limits the EMI suppression effect of chaotic PWM for power converters [20]. Moreover, the practical spreading frequency bandwidth is much larger than the designed frequency band under traditional chaotic PWM (TC-PWM) with discrete chaotic mappings, and it could lead to unwanted sideband noise [21].…”

Section: Introductionmentioning

confidence: 99%

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Continuous Multi-Scroll Chaotic PWM and its Chaotic Signal Selection Method for EMI Suppression of Power Converters

Yang

Ding

et al. 2020

IEEE Access

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Chaotic pulse width modulation (PWM) technique has been applied to suppress electromagnetic interference (EMI) in power converters. However, traditional discrete chaotic PWM has the shortcoming that the spreading spectrum distribution is triangular in shape and the practical spreading frequency bandwidth is much larger than the designed, which will further result in the limited EMI suppression. In this paper, a continuous chaotic PWM method based on the continuous multi-scroll chaotic attractors is put forward to suppress EMI more effectively, getting better spread spectrum distribution at switching frequency and its multiples for power converters. Moreover, to guide the selection of chaotic signals in real applications, the influence mechanism of multi-scroll chaotic signals on EMI spectrum distribution is firstly analyzed in this paper so as to provide a practical chaotic signal selection method. Finally, the experiments are presented followed by the simulations on a boost converter to verify the effectiveness of the proposed continuous multi-scroll chaotic PWM method and the correctness of the given chaotic signal selection method. This paper provides design guidance for the chaotic PWM in engineering applications. INDEX TERMS Electromagnetic interference, power converters, chaotic pulse width modulation, multiscroll chaotic attractors, spectral characteristics.

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Section: Influence Mechanism Of Mc-pwm Signals On Spectrum Distribmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Continuous Multi-Scroll Chaotic PWM and its Chaotic Signal Selection Method for EMI Suppression of Power Converters

Yang

Ding

et al. 2020

IEEE Access

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“…Zhang et al [20] combines the selfregressive self-encoding random sequence with multi-rolling chaos to obtain a random sequence with high complexity and applies it to spread spectrum communication. For Hong Li, et.al, they use a 2*2-scroll chaotic attractor to suppress the peak of electromagnetic interference at the switch, thereby reducing the occurrence of low-order noise [21]. 2*2-scroll chaotic time domain waveform is simple and smooth, only suitable for simple circuit, can only suppress the generation of low-order noise, can not achieve good EMI suppression effect for complex high-order noise, 2*2-scroll chaotic can not EMI suppression of circuits under high frequency conditions.…”

Section: Introductionmentioning

confidence: 99%

EMI Suppression of High-Frequency Isolated Quasi Z-Source Inverter Based on Multi-Scroll Chaotic PWM Modulation

et al. 2019

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The high frequency isolated quasi Z-source inverter is a new type of inverter, which is suitable for photovoltaic generation system because of its high lift to voltage ratio, transient bridge direct access and electrical isolation.With the increase of its power density, the working frequency of its semiconductor switching devices is increasing. Switching devices in high-frequency states generate a large amount of electromagnetic noise, affecting the normal operation of surrounding electrical equipment and threatening the stability of the power grid. For the optimization of electromagnetic compatibility of high frequency isolation quasi Z-source inverter, using pulse width modulation (PWM) chaotic modulation technology, put forward using Chen multi-scroll chaotic system and traditional PWM are combined, using the new PWM control technology can inhibit electromagnetic interference (EMI) from the noise source, effectively reduce the high frequency isolation quasi Z-source switch frequency and its harmonics noise power, and optimize the total harmonic distortion (THD) of the output current by analyzing the chaotic modulation coefficient. Finally, the correctness of the theory is verified by Saber simulation and circuit test. This paper can provide guidelines for the electro magnetic compatibility (EMC) design of the high frequency isolated quasi Z-source inverter and provide the theoretical basis for the EMI optimization design of the power electronic system.INDEX TERMS High frequency isolation quasi Z-source inverter, chaotic pulse width modulation (PWM) technology, multi-scroll chaos of Chen system, electromagnetic interference (EMI), total harmonic distortion (THD).

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Common-Mode Voltage Reduction of Modular Multilevel Converter Based on Chaotic Carrier Phase Shifted Sinusoidal Pulse Width Modulation

Wang

Yang

et al. 2020

2020 IEEE International Symposium on Electromagnetic Compatibility &Amp; Signal/Power Integrity (EMCSI)

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Suppressing electromagnetic interference of power converters based on 2×2-scroll chaotic PWM method

Cited by 5 publications

References 7 publications

Continuous Multi-Scroll Chaotic PWM and its Chaotic Signal Selection Method for EMI Suppression of Power Converters

Continuous Multi-Scroll Chaotic PWM and its Chaotic Signal Selection Method for EMI Suppression of Power Converters

EMI Suppression of High-Frequency Isolated Quasi Z-Source Inverter Based on Multi-Scroll Chaotic PWM Modulation

Common-Mode Voltage Reduction of Modular Multilevel Converter Based on Chaotic Carrier Phase Shifted Sinusoidal Pulse Width Modulation

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