scholarly journals Input/Output EMI Filter Design for Three-Phase Ultra-High Speed Motor Drive GaN Inverter Stage

2021 ◽  
Vol 6 (1) ◽  
pp. 74-92
Author(s):  
Michael Antivachis ◽  
Keyword(s):  
Electromagnetic Interference ◽  
High Speed ◽  
Electromagnetic Compatibility ◽  
Filter Design ◽  
Mutual Influence ◽  
Motor Drives ◽  
Motor Drive ◽  
Input Side ◽  
Output Side ◽  
Conducted Emi

Pairing wide-bandgap (WBG) inverters with high-speed motors results in compact and effi cient motor drives, but requires special attention on electromagnetic interference (EMI) aspects. This paper focuses on electromagnetic compatibility (EMC) of high-speed motor drives, supplied by a DC source. In order to protect the nearby equipment from the EMI noise of the WBG inverter, a fi lter that complies with conducted EMI regulations is placed at the inverter DC input-side. However, there is no clear mandate requiring from inverters to comply with conducted EMI regulations at the AC output-side, where only the motor is placed. For this reason, there is no full consensus whether it is necessary to use an output fi lter, and if so, what type of output fi lter would be suitable, i.e., if differential-mode (DM), common-mode (CM) or both DM/CM output fi lter would fi t best. A full sine-wave output fi lter (FSF) is proposed in this paper, that features both DM and CM attenuation, and capacitors connected to the DC link. Besides the several well established benefi ts of a FSF, such as purely sinusoidal motor currents and the protection of the motor against high du/dt originating from the fast switching of the semiconductor devices, a FSF at the inverter output-side, also reduces the CM EMI emissions at the inverter input-side. Namely, since the inverter housing, the motor housing and the interconnecting shielded cable are all grounded, CM emissions generated at the inverter output-side are directly mapped to the inverter input-side, i.e., there is an input-to-output CM noise interrelation. A FSF reduces the output-side CM EMI emissions and thus mitigates the input-to-output CM noise mutual influence. Two types of FSF (c-FSF and d-FSF) are comparatively evaluated, in terms of volume, losses and EMI performance. The theoretical consideration are tested within the context of a high-speed 280 krpm, 1 kW motor drive, with 80 V DC supply. The experimental results validate the good performance of the proposed filter concept.

scholarly journals Обеспечение электромагнитной совместимости систем интеллектуального управления при появлении помех в судовых кабельных трассах

2020 ◽  
Author(s):  
A.M. Agafonov ◽  
A.A. Worshevsky ◽  
P.A. Vorshevskii ◽  
E.S. Grishakov ◽  
A.S. Kornev
Keyword(s):  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Mutual Influence ◽  
Electromagnetic Coupling ◽  
Systems Design ◽  
Power Input ◽  
Travelling Wave ◽  
Normal Function ◽  
Input Output ◽  
Digital Technique

Системы интеллектуального управления базируются на использовании цифровой техники и по своему принципу действия восприимчивы к внешним помехам. Изменения напряжения и тока в кабелях, электромагнитные поля могут привести к появлению в цепях передачи информации и питания систем напряжений, похожих на полезные сигналы, что приведет к сбоям в работе систем. Технология электромагнитной совместимости (ЭМС) призвана устранить взаимные влияния оборудования и обеспечить его нормальную работу в условиях действия помех. Кабельные трассы являются особенно значимым фактором для обеспечения ЭМС на судах. Помехи распространяются в кабелям от источников к чувствительному электронному оборудованию (ЭО). Метод распространяющихся волн дает возможность рассчитать изменения помех при распространении по кабелям. Силовые и информационные кабели могут прокладываться в одной трассе, что приводит к их электромагнитной связи. Рассмотренные модели оценивают наведенные напряжения в информационных кабелях при появлении помех в силовых кабелях. Параметры электромагнитной связи кабелей могут быть определены расчетным путем и экспериментально на основе предлагаемой методики. Приведенные рекомендации по снижение уровня излучаемых помех от кабельных трасс, снижению наведенных напряжений и выполнению экранирования призваны помочь разработчикам ЭО и систем в обеспечении ЭМС.Intellectual control systems are based on digital technique. Digital electronic equipment (EE) is the receptor of electromagnetic interference due to its function principle. EE malfunction can be caused by induced voltages in input/output and power supply circuits. Voltage and current changes in cables leads to electromagnetic noise and induced voltages. Protection technique for power, input/output, case and grounding ports can be used in equipment and ship systems design. Electromagnetic compatibility technique must eliminate mutual influence of EE and give normal function of EE in real electromagnetic environment. Cable run is important factor for EMC obtaining in ships. Noise voltage propagates in cable from noise source to sensitive EE. Voltage parameters can be calculated with travelling wave technique. There are power and information cables in shipboard cable run. Electromagnetic coupling of cables leads to voltages in one cable induced by voltages and current in other cable. Coupling models give possibility to calculate induced voltages. Parameters of coupling can be determined with calculation on the base of detailed information about cable run or with proposed experiment procedure. Proposed recommendations about cable emission decreasing, cables decoupling and shielding can be useful for EMC obtaining.

scholarly journals Modeling and Experimental Investigation of Electromagnetic Interference (EMI) for SiC-Based Motor Drive

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5173
Author(s):  
Yingzhe Wu ◽  
Shan Yin ◽  
Hui Li ◽  
Minghai Dong
Keyword(s):  
Electromagnetic Interference ◽  
Semiconductor Device ◽  
Frequency Domain Analysis ◽  
Motor Drives ◽  
Motor Drive ◽  
Switching Frequency ◽  
Switching Speed ◽  
Fast Switching ◽  
Source Voltage ◽  
Switching Characteristics

The motor drive has been widely adopted in modern power applications. With the emergency of the next generation wide bandgap semiconductor device, such as silicon carbide (SiC) MOSFET, performance of the motor drive can be improved in terms of efficiency, power density, and reliability. However, the fast switching transient and serious switching ringing of the SiC MOSFET can cause unwanted high-frequency (HF) electromagnetic interference (EMI), which may significantly reduce the reliability of the motor drive in many aspects. In order to comprehensively reveal the mechanism of the EMI previously used in motor drives using SiC MOSFET, this paper plans to analyze the influences of both HF impedance of the motor and switching characteristics of the SiC MOSFET. A simulation model for motor drives has been proposed, which contains the HF circuit model of the motor as well as a semi-behavioral analytical model of the SiC MOSFET. Since the model shows a good agreement with the experimentally measured results on spectra of drain-source voltage of the SiC MOSFET (vds), phase to ground voltage of the motor (vphase), CM voltage (vcm), phase current of the motor (idm), and CM current (icm), it can be adopted to quantitatively investigate the influence of the motor impedance on EMI through frequency-domain analysis. Additionally, the impacts of switching characteristics of SiC MOSFET on EMI are also well studied according to relative experiment results in terms of switching speed, switching frequency, and switching ringing. Based on the analysis above, the relationship between motor impedance, switching characteristics of the SiC MOSFET, and HF EMI can be figured out, which is able to provide much helpful assistance for application of the motor drive.

Interference and Electromagnetic Compatibility Challenges in 5G Wireless Network Deployments

2017 ◽  
Vol 5 (3) ◽  
pp. 612
Author(s):  
Idrissa Abubakar ◽  
Jafri Din ◽  
Manhal Alhilali ◽  
Hong Yin Lam
Keyword(s):  
Wireless Network ◽  
Electromagnetic Interference ◽  
High Speed ◽  
Electromagnetic Compatibility ◽  
Signal Integrity ◽  
Energy Coupling ◽  
Mri Scan ◽  
Power Bus ◽  
Electromagnetic Devices ◽  
High Speed Data

<p>5G wireless network technology is going operate within the environment of other electrical, electronic and electromagnetic devices, components and systems, with capability of high speed data connectivity acting as network transceiver stations with Massive MIMO for Internet of Things (IoT). Considering the level of interoperability, electromagnetic Interference and electromagnetic compatibility to avoid electromagnetic pulse effects (EMP) which is capable of not only causing network malfunctions but total devices and equipments failure in mission critical operations, like hospital MRI scan machines, security profiling and data handling or even personal healthcare devices like heart pacemaker. Electromagnetic energy coupling in PCB due to: radiation, reflection and Crosstalk generates reliability challenges affecting Signal Integrity between traces of multilayer boards stalks, power bus and packaging creating Electromagnetic interference (EMI) in PCB leading false clock response to system failure. Above were considered very essential when deploying 5G wireless network facility as presented in this paper. </p>

scholarly journals Characteristic Analysis and Applications of Electromagnetic Shielding Materials for Wireless Communications Device

2016 ◽  
Vol 10 (1) ◽  
pp. 44-53
Author(s):  
Han-Nien Lin ◽  
Ya-Ying Chen ◽  
Hung-Yun Tsai ◽  
Min-Shan Lin
Keyword(s):  
Mobile Communications ◽  
Electromagnetic Interference ◽  
High Speed ◽  
Electromagnetic Compatibility ◽  
Electromagnetic Shielding ◽  
Consumer Electronics ◽  
Shielding Effectiveness ◽  
Characteristic Analysis ◽  
Measuring Methods ◽  
Iec 61967

As the trend of consumer electronics and mobile communications devices is obviously developing toward to miniature and high-speed processing, the problem involving with electromagnetic compatibility (EMC) or radio frequency interference (RFI) is becoming more critical for the system integration of high-speed digital and RF mixed signal platforms. This paper is mainly focusing on the characteristics analysis of various electromagnetic shielding materials by utilizing the various shielding effectiveness (SE) measuring methods developed by TDK and ASTM (ASTM D4935). We also adopt the electromagnetic interference (EMI) testing methods developed by IEC for chip level (IEC 61967-3 and IEC 61967-6) to investigate the characteristics and distribution of EMI noise sources. To effectively shield the electric, magnetic, or electromagnetic field originated from noise source, we thus analyze the shielding capability for various materials with different measuring methods. Finally, we will show the EMI reduction and RF performance improvement with implementation of shielding material on module under investigated. With the systematic measurement and analysis described in this paper, we can further identify the related EMI problem and resolve the severe chip or module level EMC problem more effectively.

scholarly journals Conducted Emi Model for Flyback PFC Converter

2019 ◽  
Vol 8 (3) ◽  
pp. 6916-6923
Keyword(s):  
Power Factor ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Input Power ◽  
International Standards ◽  
Noise Sources ◽  
Flyback Converter ◽  
Full Compliance ◽  
Switched Mode Power Supply ◽  
Conducted Emi

Power Factor Correction (PFC) units are used at the front end of Switched Mode Power Supply (SMPS) to improve the input power factor. However, they generate Electromagnetic Interference (EMI) which needs to be mitigated to compliant levels prescribed by International Standards. The Electromagnetic Compatibility (EMC) standards have set regulations which require expensive instruments and environment for their measurement. Hence there is a need for predicting Conducted EMI by simulation before the product is tested for full compliance to reduce the complexity of the circuit design and cost. To estimate the Conducted EMI, it is important to identify the main noise sources and their conduction paths. This can be achieved by simulating the circuit using the exact models of the transformer, capacitor, PCB trace, and the switching semiconductors. In this paper these components of PFC flyback converter are modelled using SPICE models, datasheet defined component parameters and experimental measurements. The theoretical analysis and simulation results show that the method discussed can predict and analyse the Conducted EMI. This is tested experimentally on a Flyback PFC converter working in Critical Conduction Mode. A line filter is designed and used to bring the noise to compliant levels. Simulation and Experimental results after using the line filter are also presented.

Modeling of Conducted EMI in Electric Vehicle Motor Drive System

2013 ◽  
Vol 325-326 ◽  
pp. 543-546
Author(s):  
Yong Ming Yang ◽  
He Meng Peng ◽  
Quan Di Wang
Keyword(s):  
Electric Vehicle ◽  
Electromagnetic Interference ◽  
High Frequency ◽  
Drive System ◽  
Motor Drive ◽  
Frequency Range ◽  
Parasitic Parameters ◽  
Simulation Results ◽  
Motor Drive System ◽  
Conducted Emi

In this paper, a method for conducted electromagnetic interference (EMI) prediction in Electric Vehicle motor drive system based on components’ circuit models is presented. Firstly, the characteristics of the components are analyzed and the equivalent circuits are drew; then, the parasitic parameters of the electromagnetic device are extracted by the measurement, analytical solution and finite element method (FEM); and finally, the circuit model of the whole motor drive system in high frequency range is established. This model is verified by the measurement and simulation results in the frequency domain.

scholarly journals Coupled random PWM technique for dual inverter fed induction motor drive

2019 ◽  
Vol 10 (1) ◽  
pp. 58 ◽  
Author(s):  
Syed Munvar Ali ◽  
V. Vijaya Kumar Reddy ◽  
M. Surya Kalavathi
Keyword(s):  
Induction Motor ◽  
Electromagnetic Interference ◽  
Acoustic Noise ◽  
Paper Analysis ◽  
Motor Drives ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Induction Motor Drives ◽  
Open End Winding ◽  
Good Standard

Dual inverter fed induction motor drives provide more advantages in contrast with other multilevel inverter drives. Coupled PWM techniques provide good standard of output voltage than the decoupled PWM techniques for dual inverter configuration. In this paper analysis of open end winding induction motor by coupled random PWM signals and decoupled SVPWM signals was carried out. Induction motor by random PWM technique generate low acoustic noise and electromagnetic interference to near by systems. The performance evaluation of the drive wss implemented in MATLAB/simulink and the results were presented.

Practical electromagnetic compatibility studies of a CubeSat

2016 ◽  
Vol 14 (4) ◽  
pp. 770-780
Author(s):  
Matthew Sibanda ◽  
Robert Ryk van Zyl
Keyword(s):  
Electromagnetic Interference ◽  
High Speed ◽  
Electromagnetic Compatibility ◽  
Cost Effective ◽  
Space Technology ◽  
Satellite Mission ◽  
Content Type ◽  
Design Life ◽  
Data Links ◽  
Mission Success

Purpose Incorporating electromagnetic compatibility (EMC) in the design life of traditional satellites is entrenched in the satellite industry. However, EMC treatment of CubeSats has not been widely pursued, for various possible reasons. CubeSats are a young technology platform initially intended for students and researchers at universities to create awareness and excitement amongst them for space technology. This and other factors limited the need for stringent EMC planning. As CubeSats mature in complexity, the success of future missions will rely on incorporating proper EMC designs in their development. This paper aims to address the experimental investigation of known EMC culprits within a CubeSat’s context. Design/methodology/approach Electromagnetic interference suppression effectiveness of cable trays in CubeSats, as well as crosstalk in high-speed/frequency data links, is investigated, using the PC/104 connector stack. Some recommendations for improving the EMC and, therefore, enhancing satellite mission success are provided. Findings It was found that, if physically feasible in the CubeSat, cable trays are significant radiation suppressors. A further investigation into crosstalk between pins of the PC/104 connector stack showed that grounding a pin in between two signal pins leads to a significant reduction in the coupled signal. Originality/value This paper addresses EMC within the context of a CubeSat and outlines experiments done resulting in cost-effective methods of reducing interference by using already available material (such as unused signal pins available in the PC/104 connector).

The Study on the High-Speed Electrified Railway Electromagnetic Interference Impact

2014 ◽  
Vol 496-500 ◽  
pp. 1211-1214
Author(s):  
Yao Dan Chi ◽  
Yu Song Mu ◽  
Liu Song Yang ◽  
Hai Long Gu
Keyword(s):  
Electromagnetic Interference ◽  
High Speed ◽  
Electromagnetic Compatibility ◽  
Personnel Safety ◽  
Electrified Railway

With the development of electrified railway, there produced more andmore electromagnetic compatibility problems. It will affect the safety of trainoperation and personnel safety. This paper introduces electromagneticinterference analysis about our electrified railway on the traction powersupply system, the signal equipment, the train structure and the surroundingenvironment in our country.

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