Active and passive series compensation of common mode voltage in adjustable speed drive system

Kempski, A.; Smoleński, Robert; Kot, E.; Fedyczak, Z.

doi:10.1109/ias.2004.1348851

Cited by 14 publications

(10 citation statements)

References 17 publications

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“…The CM voltage source cancellation in inverter-fed systems [25] can be done using active [54] as well as the passive CM voltage compensators proposed by 37,38]. Compensation in the active series filter is realized by the addition of the common mode voltage of the opposite polarity to each phase.…”

Section: Compensator For Invertersmentioning

confidence: 99%

“…Power P-channel MOSFET transistors of the required ratings are accessible widely. MOSFETs are faster than bipolar transistors and their high level and steep slopes of the CM voltage cause a negligible non-zero gate-to-source threshold voltage in this application [25]. A slight deviation from full compensation is caused by a voltage drop across a gate resistor during the switching instant of the inverter.…”

mentioning

confidence: 99%

“…Figure 5.12 shows several waveforms of CM voltage drops on the choke and magnetizing current measured in the experimental system for different inverter output frequencies of a two-level inverter with sinusoidal PWM (carrier frequency f c = 16 kHz) [25]. …”

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confidence: 99%

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Compensation of Interference Sources Inside Power Electronic Interfaces

Smoleński

2012

Conducted Electromagnetic Interference (EMI) in Smart Grids

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The most suitable way, to eliminate simultaneously all side effects connected with the application of power electronic converters in Smart Grid systems, is the compensation of the interference sources inside of the power electronic interface. In such situation the compensation of the interference sources prevents both the spreading of the interference over extensive circuits and the uncontrolled aggregation of the interference generated by a group of converters, facilitating development of the compatible system. CM Compensator for InvertersThe CM voltage source cancellation in inverter-fed systems [25] can be done using active [54] as well as the passive CM voltage compensators proposed by 37,38]. Compensation in the active series filter is realized by the addition of the common mode voltage of the opposite polarity to each phase. It has been realized using the emitter follower (T 1 , T 2 ). The common mode voltage is detected on Y -connected capacitors (C det ) and added to the phase voltages by a common mode transformer, Fig. 5.1.The equivalent circuit for CM component is presented in Fig. 5.2. The series compensation is realized by addition of the compensating voltage U C by means of the CM adding transformer fed by the voltage-controlled voltage source.The original arrangement proposed by Ogasawara and Akagi for CM voltage, bearing voltage and bearing current elimination was designed using bipolar transistors for a 3 × 200 V, 60 Hz supply of a frequency converter. Each transistor of the emitter follower has to operate under full DC-link voltage conditions (282 V) [38].In the presented investigations the concept of the series active filter for a 3×400 V,

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Section: Compensator For Invertersmentioning

confidence: 99%

mentioning

confidence: 99%

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Compensation of Interference Sources Inside Power Electronic Interfaces

Smoleński

2012

Conducted Electromagnetic Interference (EMI) in Smart Grids

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“…Traditionally filters are designed after the construction of the FC. The EMI emission phenomenon is complex, and in the case of passive filtering [1], chokes are designed in a "cut and try" process with significant issues as size, cost and weight [2], [3] .To avoid the construction of several prototypes, often oversized, designers need an analytical method to predict performances of filters. In this paper some sensitivity aspects of designable parameters of the common choke are presented.…”

Section: Introductionmentioning

confidence: 99%

Performance optimization aspects of common mode chokes

Roc'h

Bergsma

Zhao

et al. 2008

2008 Asia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compati

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“…EMI filters are introduced in power systems in order to comply with the conducted emission regulatory requirements and to reduce the radiated emission. Filtering the main supply and motor cables adequately is a challenge which often leads to retro-designed filters, tested in a 'trial and error' process [20], [21], [22]. Design constraints such as size, cost and weight are common while working with such components.…”

Section: Introductionmentioning

confidence: 99%

Behavioural models for common mode EMI filters

Roc'h¹

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The front cover depicts a behavioural model of an EMI filter in Simulink (inspiration from the painting Victory Boogie-Woogie (1944), Piet Mondriaan).Copyright © 2012 by Anne Roc'h All Rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without the prior written consent of the copyright owner. Summary Behavioural Models of Common Mode EMI filtersEMC is defined as the "ability of an equipment or system to function satisfactorily in its electromagnetic environment without producing intolerable electromagnetic disturbances to anything in that environment". EMC means that equipment shall be designed and manufactured, in such way that:-The electromagnetic disturbance generated does not exceed the level above which radio and telecommunication equipment or other equipment cannot operate as intended.-It has a level of immunity to the electromagnetic disturbance to be expected in its environment which allows it to operate without unacceptable degradation of its indented use.Electric motors convert electrical power into mechanical power within a motor-driven system. Electric motors and the systems they drive are the single largest electrical energy consumer, more than twice as much as lighting, the next largest energy consumer, and represent close to 70% of the electrical energy consumption in the industrial sector worldwide [1]. One of the major problems faced by motor drives is Electromagnetic Interference (EMI) which produces unwanted effects on surrounding electronic devices. A traditional way to control EMI in motor drives is the introduction of EMI filters. However a successful and first-time-right design is a 'done thing' only to a few experienced designers. The filter though is often not optimized in terms of weight, cost and EMI reduction abilities. Enhancing these performance criteria and supporting a first-time-design at the early stages of development, are the objectives of the work presented in this thesis.Behavioural models have been chosen as the modelling technique because they relates the designable parameters of the EMI filter to its final performance placed in the motor drive and respect the underlying physics involved.viThe thesis starts with a description of the generation mechanisms of EMI in motor drives when no precautionary action is taken to reduce them. A focus is made on common mode current as they are the main cause of conducted and radiated electromagnetic emission.Behavioural models of the common mode EMI filter involve the complete motor drive. It has been modelled step by step, starting from a component point of view towards a global approach. It combines functional parameters together with the EMI ones.The constitutive components of the filter are the Y-capacitors and the Common Mode Choke (CMC). A new equivalent circuit of this latter component has been developed. The choice of the proper material is a trade off between cost, size and perfo...

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Active and passive series compensation of common mode voltage in adjustable speed drive system

Cited by 14 publications

References 17 publications

Compensation of Interference Sources Inside Power Electronic Interfaces

Compensation of Interference Sources Inside Power Electronic Interfaces

Performance optimization aspects of common mode chokes

Behavioural models for common mode EMI filters

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