An FPGA Chaos-Based PWM Technique Combined with Simple Passive Filter for Effective EMI Spectral Peak Reduction in DC-DC Converter

Natarajan, Sudhakar; Rajasekar, N.

doi:10.1155/2014/383089

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…Ali et al [37] talks about the technology named hybrid integration. Danilovic et al [38], Chou and Lu [39], Xu and Wang [40], Paulis et al [41], Wang and Xu [42], Natarajan and Natarajan [43], Hsiao et al [44], Chen et al [45] discussed new and low cost inverters related to EMI filter design. For easy understanding, the aforementioned published works have been categorized based on switching frequency, power level, hardware implementation, and level of suppression and presented in Table 1.…”

Section: ) Emi Filter Designmentioning

confidence: 99%

A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

et al. 2020

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One of the most challenging and interesting field in power electronics is the ability to mitigate the Electromagnetic Interference (EMI). A natural source of EMI includes the atmospheric discharge/charge phenomena and extra-terrestrial radiation. Man-made source of EMI are line radiation, auto ignition, radio frequency interference and power lines. Suppression of EMI and enhancing the Electro Magnetic Compatibility (EMC) has become essential in high frequency power electronic converters. This review article is a one stop solution for new researchers and practitioners to understand about the effects of EMI and its suppression techniques in detail. INDEX TERMS Electro magnetic compatibility, electro magnetic interference, mitigation.

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Section: ) Emi Filter Designmentioning

confidence: 99%

A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

et al. 2020

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“…However, no significant enhancements in spectral reduction are observed when β > 0.3. This may result from the increased low‐frequency spectral components and the overlaps between the successive frequency spectrum ranges [19, 30]. It has been recommended in [30] that the upper limit of the modulation index should be <1/3 to avoid such overlapping.…”

Section: Development Of the Proposed Switching Waveformmentioning

confidence: 99%

EMI mitigation in switching power converters combining closed‐loop gate drive and chaotic frequency modulation technique

Cui

et al. 2019

IET Power Electronics

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All switching power converters are characterised by inevitable switching actions with relevant interference emissions. The voltage and current transients of power metal oxide semiconductor field effect transistor (MOSFET)/insulated-gate bipolar transistor are the main sources in switching power converters for both conducted and radiated emissions. In this study, a promising electromagnetic interference (EMI) mitigation method combining the closed-loop gate drive method and the chaotic switching frequency modulation technique is demonstrated for switching power converters. A chaotic pulse-width modulation waveform with Gaussian S-shape switching transients was proposed to achieve remarkable reduced EMI generation at all frequencies. Spectral characteristics of this new switching waveform were investigated by the power spectral density to verify the feasibility of reduced EMI generation. A closed-loop gate controller was presented to shape the switching transients of power MOSFET into the proposed switching waveform. Circuit tests were carried out in both simulations and experiments. The results validated that the proposed method could achieve remarkable EMI mitigation in switching power converters.

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“…This is because the randomness does not rely only on two distinct carriers but also on the sequential pattern used for selection. Linear feedback shift register (LFSR) is the best solution to offer the above requirement (more randomness) [20][21][22][23]. The principle of LFSR is based on the logical operation of several bits of a digital number and is commonly known as pseudo-PWM code generator in communication systems [23,24].…”

Section: Research Articlementioning

confidence: 99%

Intensive random carrier pulse width modulation for induction motor drives based on hopping between discrete carrier frequencies

Sivarani¹,

Jawhar²,

Kumar³

2016

IET Power Electronics

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The existing random carrier pulse-width modulation (RCPWM) schemes result in poor non-deterministic characteristics. They basically use a single-frequency triangular carrier and its inverted version to synthesise the random carrier by a pseudo-random binary sequence (PRBS) bit selector. Even though the bits are highly random in nature with large pattern repetition rate, the resulting random carrier does not possess required level of randomness. Rather it can make slight positional variation in the resulting PWM pulses. Moreover, the harmonic spreading effects of these randomness may not be sufficient to meet the expectations of modern drives. Hence, this study proposes a multiple carriers based RCPWM (MCBRCPWM) scheme for the voltage-source inverter fed induction motor drive to enhance the harmonic power spreading ability of the modulator. The proposed MCBRCPWM scheme utilises the nondeterministic characteristics of both the PRBS and hopping action between the MCs involved. The simulation results using MATLAB 7.1.0 (2010a)-Simulink software and the experimental results with hardware implemented using XC6SLX45 field programmable gate array for a 3Ø squirrel cage induction motor load prove the excellent harmonic spectra spreading capability of the proposed scheme as compared with existing non-deterministic methods.

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An FPGA Chaos-Based PWM Technique Combined with Simple Passive Filter for Effective EMI Spectral Peak Reduction in DC-DC Converter

Cited by 10 publications

References 19 publications

A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

EMI mitigation in switching power converters combining closed‐loop gate drive and chaotic frequency modulation technique

Intensive random carrier pulse width modulation for induction motor drives based on hopping between discrete carrier frequencies

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