Design and implementation of an inverter output LC filter used for dv/dt reduction

Habetler, T.G.; Naik, R.; Nondahl, Thomas A.

doi:10.1109/tpel.2002.1004240

Cited by 154 publications

(25 citation statements)

References 4 publications

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“…The diode bridge can be located after the capacitors Cf, as illustrated in Fig. 5 [18], or interposed between the inductors and the capacitors [19], [20]. Two damping resistors connect the rectifier to the DC bus terminals.…”

Section: B Lc Clamp Filtersmentioning

confidence: 99%

Dv/Dt Filtering Techniques for Electric Drives: Review and Challenges

Pastura

Nuzzo

Kohler

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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The use of wide band gap devices in power converters is becoming more and more popular since they enable operations at higher switching frequencies, voltages and temperatures compared to traditional power semiconductors, while also improving the efficiency. However, in electric drives, they also tend to increase voltage overshoots at motor terminals and to produce uneven voltage distributions across stator windings, due to their high rate of voltage change over time (dv/dt). In order to mitigate these issues, passive filters can be employed. The aim of this paper is to give an overview of possible solutions based on passive filters, analyzing the main advantages and drawbacks. A comprehensive, qualitative comparative study is carried out taking into account common mode currents reduction, power losses, costs, dimensions and reliability.

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Section: B Lc Clamp Filtersmentioning

confidence: 99%

Dv/Dt Filtering Techniques for Electric Drives: Review and Challenges

Pastura

Nuzzo

Kohler

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

View full text Add to dashboard Cite

show abstract

“…Combining Equations (16) and (17), the selection of R h falls within the range as given by Equation (18).…”

Section: Selection Of Individual Filter Componentsmentioning

confidence: 99%

“…On the other hand, an extra control algorithm that simulates the role of a real resistor makes the system complex. To overcome this, a method that uses a resistor to help dissipate the energy stored in the resonant circuit of a LC filter used in an IGBT inverter is proposed for motor drive applications [18]. However, the above filter is designed with a resonant frequency above the switching frequency, since the purpose is to limit merely dv/dt and not to suppress the switching harmonics.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Improvement in a Cascaded Multilevel Inverter Interfaced Grid Connected System Using a Modified Inductive–Capacitive–Inductive Filter with Reduced Power Loss and Improved Harmonic Attenuation

Jayaraman

2017

Energies

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Recently, multilevel inverters are more researched due to the advantages they offer over conventional voltage source inverters in grid connected applications. Passive filters are connected at the output of these inverters to produce sinusoidal waveforms with reduced harmonics and to satisfy grid interconnection standard requirements. This work proposes a new passive filter topology for a pulse width modulated five-level cascaded inverter interfaced grid connected system. The proposed passive filter inserts an additional resistance-capacitance branch in parallel to the filter capacitor of the traditional inductive–capacitive–inductive filter in addition to a resistance in series with it to reduce damping power loss. It can attenuate the switching frequency harmonic current components much better than the traditional filter while maintaining the same overall inductance, reduced capacitance and resistance values. The basic parameter design procedure and an approach to discover the parameters of the proposed filter is introduced. Further, a novel methodology using Particle Swarm Optimization (PSO) is recommended to guarantee minimum damping loss while ensuring reduced peak during resonance. In addition, PSO algorithm is newly employed in this work to maximize harmonic attenuation in and around the switching frequency on the premise of allowable values of filter inductance and capacitance. A comparative discussion considering traditional passive filters and the proposed filter is presented and evaluated through experiments conducted on a 110 V, 1 kW five-level grid connected inverter. The modulation algorithm for the multilevel inverter is implemented using a SPARTAN 6-XC6SLX25 Field Programmable Gate Array (FPGA) processor. The analysis shows that the proposed filter not only provides decreased damping power loss but also is capable of providing considerable harmonic ripple reduction in the high frequency band, improved output waveforms and lesser Total Harmonic Distortion (THD) with improved power quality for the multilevel inverter based grid connected system.

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“…Hence, there is no voltage overshoot. V/us and help to dissipate the energy stored in the L-C resonant circuit by resistors [12]. In figures 13-14, an improved common-mode output filter with return to DC capacitors mid-point is proposed, which can eliminate over-voltages, suppress common-mode voltages at the motor terminals, and suppress shaft voltages and bearing currents [13][14].…”

Section: Chaiwat Choochuanmentioning

confidence: 99%

A survey of output filter topologies to minimize the impact of PWM inverter waveforms on three-phase AC induction motors

Choochuan¹

2005

2005 International Power Engineering Conference

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Three-phase output filters have been developed to a mature level with improved power quality in terms of over voltage transients at motor terminals when using long cables and high switching frequencies, high frequency common-mode voltages, which induce high shaft voltages leading to bearing currents and a very fast voltage rise in the PWM wave causing EMI problems including high leakage currents. This paper presents an exhaustive survey of output filter topologies to minimize the impact of PWM inverter waveforms on ac induction motors by using output filters. It is aimed at presenting a state of the art on the improved power quality of PWM inverter to researchers, designers, and application engineers dealing with three-phase output filters.

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Design and implementation of an inverter output LC filter used for dv/dt reduction

Cited by 154 publications

References 4 publications

Dv/Dt Filtering Techniques for Electric Drives: Review and Challenges

Dv/Dt Filtering Techniques for Electric Drives: Review and Challenges

Power Quality Improvement in a Cascaded Multilevel Inverter Interfaced Grid Connected System Using a Modified Inductive–Capacitive–Inductive Filter with Reduced Power Loss and Improved Harmonic Attenuation

A survey of output filter topologies to minimize the impact of PWM inverter waveforms on three-phase AC induction motors

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