EMI noise splitting into common and differential modes in PWM inverter drive system

Kempski, A.

doi:10.1109/cpe.2005.1547566

Cited by 14 publications

(15 citation statements)

References 8 publications

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“…Equations (2) and (5) are used to separate noise voltage digitally from the LISN measurement ports and is verified with an EMC current probe and is in agreement with those expressions given in [14] - [16].…”

Section: B Separating Differential and Common-mode Noisementioning

confidence: 50%

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Modelling and measurement of high‐frequency conducted electromagnetic interference in DC–DC converters

Grobler

Gitau

2017

IET Science, Measurement & Technology

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Abstract-Conducted EMC noise qualification tests are normally carried out after a prototype has been designed, built and tested and the process is repeated in the event of non-compliance. The ability to determine compliance with EMI standards at the design stage is therefore desirable. This paper will present conducted EMC noise modelling and measurement techniques, yielding simulated and measurement noise results accurate enough to serve as a prequalification test at the design and prototyping stages respectively.Accurate models of the power feed-line connecting the LISN to the DUT (converter), including the load are developed. Predictive conducted EMC modelling is accomplished using detailed active level 3 SPICE-based models, creating a real-time circuit model consisting of a complete converter in its operational state, without the need to separate into equivalent models. Effects of the power feed-line length on EMI noise measurements are investigated as currently available literature has not dealt adequately with this issue. To detect possible radiating frequencies that might emerge with the conducted noise and are detectable in the conducted emission test, results have to be accurate not just in the prescribed frequency band, but all the way up to 100 MHz. The modelling and measurements are performed using software and instruments available in a development laboratory.

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Section: B Separating Differential and Common-mode Noisementioning

confidence: 50%

“…The resistance R f of the power feed-line can now be calculated using (14), where, a, is the power feed-line wire radius. Similarly, L f , C f , G f and Z in are given in (15) to (18) [19].…”

Section: B Power Feed Line Modellingmentioning

confidence: 99%

Modelling and measurement of high‐frequency conducted electromagnetic interference in DC–DC converters

Grobler

Gitau

2017

IET Science, Measurement & Technology

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“…In general, the whole system is creating ElectroMagnetic Interference (EMI) when in operation, to all circulation paths. The PWM drive can excite parasitic capacitive couplings at the components of the system, spreading EMI currents over PWM drive, including ground and power supply [13]. The electric noise spread over the system (dSPACE) when the force feedback motor was put into operation can be easily discerned at the unfiltered gas-pedal sensor voltage illustration in Fig.…”

Section: Force Feedback Hardware Equipmentmentioning

confidence: 97%

Design issues for haptic steering force feedback on an automotive simulator

Katzourakis¹,

Gérard²,

Holweg³

et al. 2009

2009 IEEE International Workshop on Haptic Audio Visual Environments and Games

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This paper describes the deployment of a torque controlled force feedback steering device for human in the loop automotive simulations. The high bandwidth of the velocity controlled three phase brushless servomotor allows for a realistic representation of the virtual dynamics. The electromagnetic interference produced by the industrial servomotor and the controller made the elaboration stage challenging. To overcome the former issues careful amplification and filtering was ineluctable. The final dynamical model of the steering system used and the corresponding motor controller constitute an efficient haptic device for providing intuitive kinesthetic feedback. The system can feed back torques up to 20NM with accuracy of 0.02NM.

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“…It was assumed that the fast charging station does not have its own dedicated MV/LV transformer, which is why the use of effective limiting harmonics of phase currents is very important. The transformation of DC voltage into single-phase and three-phase AC voltage, with the use of the power-electronic PWM inverter, has side effects such as the CM voltages [8], [9]. In this chapter, the mathematical relations describing the voltage of the common mode disturbances were derived bases on the description of the threephase linear model of the PWM inverter.…”

Section: Hybrid Powering Of Power Electronic Converters Of Ev Charginmentioning

confidence: 99%

Mitigation Methods of Voltage Disturbances and Harmonic Currents of PWM Two-Level Inverter Supplying The 6-Pulse Diode Rectifier

Szymański¹,

Żurek-Mortka²

2020

Adv. sci. technol. eng. syst. j.

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Common-mode voltage Current harmonics Differential-mode voltage PWM modulation Three-phase voltage inverter Two-level PWM inverter In fast charging station for Battery Electric Vehicles (BEVs) the three-phase PWM (Pulse Width Modulation) inverters generate parasitic Differential-Mode Voltages (DMV) and Common-Mode Voltages (CMV). Parasitic voltages are a side effect of using the width modulation to shape the phase-to-phase inverter's voltage. In this article the authors present a mathematical description of the differential-mode (DM) and common-mode (CM) voltages and carry out their spectral analysis. Based on the spectral harmonics analysis, the authors present a method for filtration of harmonics of DM and CM voltages aimed at limiting the capacitance parasitic currents: due to DM voltage-phase-to-phase parasitic current and CM voltage-ground parasitic currents. A resonant filter was used to eliminate harmonics of the input rectifier of the DC/DC converter supplied from a voltage inverter. As a result of tests, the T HD i harmonic content factor was significantly reduced and ground leakage current was eliminated from the PE electric shock protection system.

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EMI noise splitting into common and differential modes in PWM inverter drive system

Cited by 14 publications

References 8 publications

Modelling and measurement of high‐frequency conducted electromagnetic interference in DC–DC converters

Modelling and measurement of high‐frequency conducted electromagnetic interference in DC–DC converters

Design issues for haptic steering force feedback on an automotive simulator

Mitigation Methods of Voltage Disturbances and Harmonic Currents of PWM Two-Level Inverter Supplying The 6-Pulse Diode Rectifier

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