Overvoltage mitigation of inverter-driven motors with long cables of different lengths

Akagi, Hirofumi; Matsumura, Itaru

doi:10.1109/ecce.2010.5617903

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…A portion of the CMV is impressed upon the bearings of the motor (shaft-frame voltage). Once a threshold is reached, the discharge currents flow, causing bearing damages [5]. As the IM speed changes from 60Hz to 15Hz, the CMV increases in the PD algorithm from below 800V to above 1800V.…”

Section: Simulation Results and Analysis A Time Domain Waveformsmentioning

confidence: 99%

“…Comprehensive research in LV drives has been conducted on the modeling and analysis of overvoltage generation on motor terminals [4]. The mitigation solutions of passive and active EMI filters are proposed [5]. Very little has been published to date regarding the quantitative characteristic analysis comparing multilevel PWM methods in MV high power industrial AC drives.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative power quality and characteristic analysis of multilevel pulse width modulation methods in medium voltage high power industrial drives

Lee

Nojima

2011

2011 IEEE Energy Conversion Congress and Exposition

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The inherent low switching frequency in medium voltage (MV) alternating current (AC) industrial drives presents power quality and filter design challenges. In this paper, four multilevel pulse width modulation (PWM) methods: Phase Disposition (PD), Switching Loss Minimization (SLM), Selective Harmonic Elimination (SHE) up to 17 th and 29 th harmonics respectively are considered. The characteristics of long cable effects on common mode voltage (CMV) and differential mode voltage (DMV), inverter losses and efficiency, induction machine (IM) voltage and current harmonics are analyzed. Very little has been published in these quantitative comparisons.It is shown that the SHE method has reduced CMV as compared to the PD and SLM algorithms. Up to 29th harmonic elimination achieves the best harmonics performance without needing an output filter, at the expense that the losses are higher with a lower efficiency. Analytical and simulation results using PLECS for the power electronics circuits and Matlab/Simulink for control systems are verified experimentally with a 1000hp, 4160V neutral point clamped (NPC) adjustable-speed drive (ASD) system that includes a 24-pulse front-end voltage source converter.

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Section: Simulation Results and Analysis A Time Domain Waveformsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantitative power quality and characteristic analysis of multilevel pulse width modulation methods in medium voltage high power industrial drives

Lee

Nojima

2011

2011 IEEE Energy Conversion Congress and Exposition

View full text Add to dashboard Cite

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“…R ESONANCE in long cables is a recurrent problem in the literature, principally in applications where long power cables are connected to power converters, e.g., connections between motors and its drives [1]- [4], the feeding cable of high-speed trains [5], connections between offshore generator stations, and onshore electrical substations [6]- [8]. The resonance occurs because medium-to-high frequency harmonics are generated by the switched converters and circulate in unshielded long cables with mismatched impedances.…”

Section: Introductionmentioning

confidence: 99%

Robust Filter Design Technique to Limit Resonance in Long Cables Connected to Power Converters

Bade

Roudet

Guichon

et al. 2020

IEEE Trans. Electromagn. Compat.

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A novel numerical analysis to characterize and to visualize the resonance behavior in a long cable is proposed. The resonance-due maximum amplification, and the frequency and position to which the maximum occurs, are represented in function of the load connected to the cable terminal in a 3-D plot here denominated "resonance surface response." This analysis is based on a white box modeling and allows the design of protective measures against the resonance phenomenon, such as filter design, protection against cross-talk, adequate voltage insulation choice, etc. One of these applications is exemplified: the design of an output filter for a power converter connected to a long cable, from which the results are compared to a classical design of the same filter to highlight the advantages and demonstrate the robustness of the proposed technique.Index Terms-Embedded system design, power cable, resonance in long cable, white-box model.

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“…Connected to a motor, a three-phase current is created. As is now widely known the fast voltage transients created by the IGBTs causes overvoltage at the motor due to reflection [4]- [10]. Active du/dt filtering mitigates this by reducing the voltage change rate before the motor cable to such a level that the reflection overvoltage is decreased.…”

Section: Introductionmentioning

confidence: 99%

IGBT phase leg non-idealities in active du/dt output filtering

Tyster

Kärkkäinen

Strom

et al. 2013

2013 15th European Conference on Power Electronics and Applications (EPE)

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Active du/dt output filtering is a previously presented method to reduce the variable-speed AC drive cable reflection overvoltages. It uses a passive LC low-pass filter and a pulse pattern from IGBT phase leg to control the filter output voltage slopes. The pulse pattern has to be formed in accordance to the LC filter resonant frequency, and timing errors will show up as additional overshoot at the filter output voltage, eventually reaching motor as well. IGBT phase leg output voltage distortion versus the logiclevel command timing affects the active du/dt filtering performance. This paper evaluates the most relevant error sources in an experimental setup for 22 kW motor with a filter for 200 m cable length. Analysis of the filter under timing errors based on measurement results is shown. The timing distortions have an effect, but in this particular case, the practical implications are not severe as the average overshoot due to timing errors was found to be in range on 10 %.

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Overvoltage mitigation of inverter-driven motors with long cables of different lengths

Cited by 8 publications

References 21 publications

Quantitative power quality and characteristic analysis of multilevel pulse width modulation methods in medium voltage high power industrial drives

Quantitative power quality and characteristic analysis of multilevel pulse width modulation methods in medium voltage high power industrial drives

Robust Filter Design Technique to Limit Resonance in Long Cables Connected to Power Converters

IGBT phase leg non-idealities in active du/dt output filtering

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