Cancellation of Common-Mode Voltages for Induction Motor Drives Using Active Method

Mei, Chenggang; Balda, Juan Carlos; Waite, W. P.

doi:10.1109/tec.2005.859983

Cited by 80 publications

(18 citation statements)

References 8 publications

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“…An improved active circuit that can compensate for CMV through CMT with an appropriate turn ratio was presented in [9]. In the circuit, the voltage rating of the transistors is reduced compared with the DC-link voltage of the inverter, but the current rating of transistors is increased due to the change in the transformer turn ratio.…”

Section: Existing CMV Elimination Methods Based On Active Circuitsmentioning

confidence: 99%

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Common-Mode Voltage Elimination for Medium-Voltage Three-Level NPC Inverters Based on an Auxiliary Circuit

Le¹,

Lee²,

Lee³

2016

Journal of Power Electronics

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In this paper, a novel scheme to eliminate common-mode voltage (CMV) is proposed for three-level neutral-point clamped (NPC) inverters. In the proposed scheme, a low-power full-bridge converter is utilized to produce compensatory voltage for CMV, which is injected into an NPC inverter through a single-phase four-winding transformer. With the proposed circuit, the power range for applications is not limited, and the maximum modulation index of the inverter is not reduced. These features are suitable for high-power medium-voltage machine drives. The effectiveness of the proposed method is verified by simulation and experimental results.

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Section: Existing CMV Elimination Methods Based On Active Circuitsmentioning

confidence: 99%

“…Meanwhile, CMV elimination methods based on auxiliary circuits with complementary-symmetry transistors have been recommended for two-level inverters [7,9]. With additional circuits, the CMV of inverters can be fully eliminated without any adverse effect on the fundamental component of the output voltage.…”

Section: Introductionmentioning

confidence: 99%

Common-Mode Voltage Elimination for Medium-Voltage Three-Level NPC Inverters Based on an Auxiliary Circuit

Le¹,

Lee²,

Lee³

2016

Journal of Power Electronics

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“…Instead of applying high cost specially-designed passive filters or external circuits [4] [5], software-based control schemes are alternatively preferred low-cost solutions for CMV mitigation in MV drives [6]- [10]. These control approaches, which mainly focus on CMV mitigation or elimination of single converters by avoiding the use of the switching states causing high CMV, may not be valid for back-to-back converter drive systems.…”

Section: Introductionmentioning

confidence: 99%

A new control scheme of five-level active NPC converters for common mode voltage mitigation in medium voltage drives

Pan

Burgos

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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This paper proposes a new control scheme of fivelevel active NPC (5L-ANPC) converters for common mode voltage (CMV) mitigation in medium voltage (MV) drives. By properly synchronizing and selecting the voltage vectors of active frond-end rectifier and motor-side inverter, the peak level of CMV at motor terminals can be effectively reduced, which is required for explosion proof (EX) applications. The characteristics of CMV in back-to-back 5L-ANPC converter drive systems are analyzed and presented. The principles and implementation procedures of the proposed CMV mitigation control scheme is discussed in details. Simulation results are provided to prove the concept.

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“…This common mode current causes conducted electromagnetic interferences (EMI) which may disturb electronic equipments in the neighborhood of the drive, and provoke premature bearing failures as well. So, wide research has dealt with this issue, by means of passive or active filtering [2]- [3], designing appropriate converters (e.g. using soft switching with low dvldt during the commutations), or working on the PWM strategy of classical two levels or multilevel hard switched converters [1] [4]- [7].…”

Section: Introductionmentioning

confidence: 99%

A New Carrier-Based PWM for the Reduction of Common Mode Currents Applied to Neutral-Point-Clamped Inverters

Videt

Moigne

Idir³

et al. 2007

APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition

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Inverters used in adjustable speed drives create common mode voltages with high dvldt transitions resulting in high frequency common mode currents which flow to the ground through stray capacitances. These common mode currents are known to damage the bearings of electric machines and cause malfunctions in other surrounding electronic devices, and therefore need to be confined by using bulky and expensive electromagnetic compatibility (EMC) filters. The presented work focuses on the three levels neutral-point-clamped (NPC) inverter and proposes a new pulse width modulation (PWM) strategy for the reduction of common mode currents by lowering the number of step variations of the common mode voltage. Unlike previous strategies, this carrier-based PWM pays attention to the real phenomena involved in the generation of common mode currents so as to efficiently reduce them by avoiding dead time effects. The new strategy has been implemented in a 20 kVA prototype and the experimental results presented in this paper confirm its best EMC behavior compared with classical PWM.

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Cancellation of Common-Mode Voltages for Induction Motor Drives Using Active Method

Cited by 80 publications

References 8 publications

Common-Mode Voltage Elimination for Medium-Voltage Three-Level NPC Inverters Based on an Auxiliary Circuit

Common-Mode Voltage Elimination for Medium-Voltage Three-Level NPC Inverters Based on an Auxiliary Circuit

A new control scheme of five-level active NPC converters for common mode voltage mitigation in medium voltage drives

A New Carrier-Based PWM for the Reduction of Common Mode Currents Applied to Neutral-Point-Clamped Inverters

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