No Blog Eletrônica de Potência você encontrará informações sobre teses,artigos,seminarios,congressos,tecnologias,cursos,sobre eletrônica potência. “TEMOS O DESTINO QUE MERECEMOS. O NOSSO DESTINO ESTA DE ACORDO COM OS NOSSOS MERITOS” ALBERT EINSTEIN. Imagination is more important than knowledge, for knowledge is limited while imagination embraces the entire world. EL FUTURO SE CONSTRUYE HOY,EL SUCESSO NO ES FRUTO DE LA CASUALIDAD,SE HUMILDE ,APRENDE SIEMPRE CADA DIA.
AUTOR DO BLOG ENG.ARMANDO CAVERO MIRANDA SÃO PAULO BRASIL
"OBRIGADO DEUS PELA VIDA,PELA MINHA FAMILIA,PELO TRABALHO,PELO PÃO DE CADA DIA,PROTEGENOS DO MAL"
quinta-feira, 28 de novembro de 2024
100kW-Class SiC Inverter Design for Series Hybrid Electric Propulsion System of Military Vehicle-Seok-Hwan Moon ․ Sang-Soo Park ․ Sang-Yong Kim ․ Jin-Uk Kim ․ Jun-Ha Hwang ․ Jin-Su Gwon
This paper proposes the design process of an inverter for 100kW-class military vehicle applying SiC-MOSFET. The SIC-MOSFET
was selected in consideration of the performance and ease of design of the SIC-MOSFET, and the gate driver, DC-link capacitor,
and heat sink were designed in consideration of the fast switching characteristics of the SIC-MOSFET and EMI noise. The designed
SIC-MOSFET inverter was verified performance of the switching device through Double Pulse Test experiments and the performance
of the inverter was verified by dynamo experiments.
The Transactions of the Korean Institute of Electrical Engineers, vol. 73, no. 11, pp. 1958~1966, 2024
VIEW FULL TEXT: http://journal.auric.kr/kiee/ArticleDetail/RD_R/433766
domingo, 24 de novembro de 2024
sexta-feira, 22 de novembro de 2024
terça-feira, 19 de novembro de 2024
quinta-feira, 7 de novembro de 2024
terça-feira, 29 de outubro de 2024
MIT OpenCourseWare
Lecture 19: Inverters, Part 3 17 de jul. de 2024 MIT 6.622 Power Electronics, Spring 2023 MIT 6.622 Power Electronics, Spring 2023 Instructor: David Perreault
segunda-feira, 28 de outubro de 2024
BASIC STATE SPACE MODEL PWM CONVERTER IN CCM -ShanghaiTech University=PROFESSOR WANG HAOYU
Power Electronic Converter Modeling and Control - ShanghaiTech University - Power Electronics Technology - Electrical Engineering - Electronic Information Engineering - Power Management Technology
sexta-feira, 25 de outubro de 2024
U-shaped high-frequency transformer HIGH VOLTAGE
Using a U-shaped high-frequency transformer that is more efficient than the E-shaped one, a 15KV plasma lighter can be made, which can melt iron wires
segunda-feira, 21 de outubro de 2024
IGBT-"Modeling and Control of Power Electronic Converters" Lecturer: Wang Haoyu Course-Shanghai Tech University Professor Wang Haoyu
IGBT-"Modeling and Control of Power Electronic Converters" Lecturer: Wang Haoyu Course-Shanghai Tech University Professor Wang Haoyu
quinta-feira, 17 de outubro de 2024
segunda-feira, 14 de outubro de 2024
domingo, 13 de outubro de 2024
sexta-feira, 11 de outubro de 2024
quinta-feira, 10 de outubro de 2024
segunda-feira, 23 de setembro de 2024
Protective earthing and protective zero connection in power system
Protective earthing and protective zero connection in power system
domingo, 15 de setembro de 2024
sábado, 14 de setembro de 2024
芯仙方案2200W双向AC-DC逆变器参考设计解析:具备UPS功能,可适用48V电池储能-Xinxian Solution 2200W Bidirectional AC- DC Inverter Reference Design
This bidirectional inverter is a three-active bridge design, using two NXP MC56F81768MLH digital signal controllers for overall control. MPS and Nanochip drivers are used to drive the switch tubes. The battery-side switch tube is from Infineon, model IPP023N10N5, the high-voltage MOS tube is from Optoelectronics, model SJMN099R60ZSW, and the IGBT is from Trino, model TGH40N65F2DS.
quarta-feira, 11 de setembro de 2024
segunda-feira, 9 de setembro de 2024
A Study on the 500W Class Converter for Power Supply of Ultrasonic Anti-Fouling System for Small Ships Based on Independent Power 독립전원 기반 소형 선박의 초음파 방오 시스템 전원 공급용 500W급 컨버터에 관한 연구
A Study on the 500W Class Converter for Power Supply of Ultrasonic Anti-Fouling System for Small Ships Based on Independent Power
독립전원 기반 소형 선박의 초음파 방오 시스템 전원 공급용 500W급 컨버터에 관한 연구
김동욱 (Dong-Wook Kim) 1iD 김배성 (Bae-Sung Kim) 1iD 신덕식 (Duck‑Shick Shin) †iD
Abstract
An ultrasonic anti-fouling system that works to remove bio-fouling, which is organic substances attached to structures under the water surface of a ship, while the ship is anchored is proposed. In order to review the configuration and applicability of the proposed system, it is designed by analyzing the operation patterns of coastal small ships and simulating power consumption according to the operation patterns. In this paper, a 500W class converter is proposed among the proposed system. To achieve high performance, a continuous conduction mode that can reduce the size of a circuit and improve efficiency of the system is applied, a two-phase interleaved boost converter applied to schottky diode and N-MOSFET power switch which are capable of high-speed switching is designed. In addition, P&O method that is easy to implement and has a simple structure among MPPT control algorithms is applied to track the optimal operating point in the non-liner characteristics of independent power module. To verify the usefulness of the proposed system, a 500W class power converter is designed. Through simulations and experiments, the performance of the MPPT algorithm according to the solar radiation condition of the independent power module and the two-phase interleaving algorithm are verified. In particular, the MPPT efficiency of over 99.6% is confirmed even under environmental conditions where the amount of solar radiation rapidly changed from 100% to 75% and the power conversion efficiency at 500W output is confirmed to be 96.26%, confirming the usefulness of the proposed circuit.
quinta-feira, 29 de agosto de 2024
A Study on the Improvement of Stability Through Improved PLL Control Techniques Based on PFC and LLC Topology With Integrated Transformer 통합 변압기를 적용한 PFC, LLC 토폴로지 기반 개선된 PLL 제어기법을 통한 안정성 향상에 관한 연구 Yong-Jin Shin Woo-Cheol Lee
A Study on the Improvement of Stability Through Improved PLL Control Techniques Based on PFC and LLC Topology With Integrated Transformer
통합 변압기를 적용한 PFC, LLC 토폴로지 기반 개선된 PLL 제어기법을 통한 안정성 향상에 관한
연구
Yong-Jin Shin Woo-Cheol Lee
Abstract
This paper presents an enhanced Phase-Locked Loop (PLL) method using the Goertzel algorithm to improve the performance of
Power Factor Correction (PFC) and LLC resonant converters. By eliminating the current sensor at the DC-link capacitor and
allowing the LLC converter to operate within the PFC converter's frequency range, the new method ensures efficient Zero Current
Switching (ZCS). Experimental and simulation results demonstrate that our approach significantly improves the power factor
compared to conventional methods. This solution simplifies the circuit design, reduces overall costs, and increases system reliability.
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sexta-feira, 9 de agosto de 2024
Signals and Circuits – Baskakov-
About the book
The present book is a course on signals and circuits as it is taught in the USSR. This subject figures prominently among the fundamental disciplines essential to the expertise of communication engineers. Keeping pace with overall progress in science and technology and reflecting the current trends in component design and theory, this course combines and sets forth in a systematic way the most important principles in the field of communications.
In his work on the text, the author has been guided by the idea that material should be specifically tailored to the teaching practice at college. This approach has governed the selection of material and the degree of detail in its presentation: its pages contain what, as the author believes, the student can fully assimilate during the time allotted. Specific circuit types, their study and comparative analysis-all this belongs to the specialized subjects in communication engineering.
This text includes a wide variety of material and a wealth of concepts and techniques which will come the student’s way for the first time. Ample space is devoted to mathematical tools of study. To link theory closer to practice, the chapters contain a great number of examples and problems giving the student deeper insight into the techniques of engineering analysis.
The book was translated from Russian by V. Kuznetsov was published in 1986 by Mir Publishers
domingo, 28 de julho de 2024
反激MOS管上的波形分析,反激工作原理-Waveform analysis on flyback MOSFET, flyback working principle.
Like other converters a
yback converter has two operating modes; continuous
conduction mode (CCM) and discontinuous conduction mode (DCM). The two
operation modes have dierent transfer equations and dierent current and voltage
wave forms. Therefore, from a design point of view it is important to analyse
the current and voltage that the electric components in the converter experience.
Particularly the current
owing through the circuit, voltage across the switch and
the diode [2]. The magnetizing inductance and the load current determines the
operation mode of the converter.
During the analysis of the dierent conduction modes of the converter, the following
assumptions will be made [5].
The converter is operating in steady state
The converter is ideal, that is the input power is equal to the output power
Leakage inductance, stray capacitors and stray resistances are neglected.
terça-feira, 23 de julho de 2024
전압 직렬보상 방식 디지털 제어 교류 저전압보상기 정 강 률* Digital-Controlled AC Low-Voltage Compensator with Voltage Series Compensation Method Gang-Youl Jeong*
전압 직렬보상 방식 디지털 제어 교류 저전압보상기 정 강 률* Digital-Controlled AC Low-Voltage Compensator with Voltage Series Compensation Method Gang-Youl Jeong* Journal of KIIT. Vol. 21, No. 12, pp. 87-98, Dec. 31, 2023. pISSN 1598-8619, eISSN 2093-7571 87
Abstract
This paper presents the digital-controlled AC low-voltage compensator with voltage series compensation method. The
proposed AC low-voltage compensator compensates for the magnitude of the AC load input voltage, which is the final output
voltage, with the voltage series compensation method using a power circuit topology consisting of a pulse-width
modulation(PWM) AC-AC power converter and a compensating transformer. To this end, the proposed low-voltage
compensator simply feeds back the magnitude of AC load input voltage through a circuit consisting of a current-type voltage
transformer, a diode full-bridge rectifier, and a resistor/capacitor. Additionally, using a micom, it converts the feedback voltage
to a digital value through A/D conversion and easily controls the entire system. This paper first briefly describes the
operating principle of the power converter applied to the proposed low-voltage compensator and explains the control method
of low-voltage compensation and the feedback method of final output voltage. Then, the driving method of the bidirectional
power semiconductor switch of power converter is explained, and the implementation feasibility and good operating
characteristics of the proposed low-voltage compensator are validated through the experimental results of the prototype.
VIEW FULL TEXT: https://ki-it.com/xml/38930/38930.pdf
단일단 교류 전력변환기를 이용한 자동 교류 전압조정기-Automatic AC Voltage Regulator using the Single-Stage AC Power Converter Gang-Youl Jeong*
단일단 교류 전력변환기를 이용한 자동 교류 전압조정기 정 강 률* Automatic AC Voltage Regulator using the Single-Stage AC Power Converter Gang-Youl Jeong* Journal of KIIT. Vol. 20, No. 11, pp. 73-83, Nov. 30, 2022. pISSN 1598-8619, eISSN 2093-7571 73
Abstract
This paper presents the automatic AC voltage regulator using the single-stage AC power converter. The proposed
automatic AC voltage regulator uses a pulse-width modulation(PWM) type non-isolated single-stage step-up/down AC
power converter to control and maintain the level of AC voltage on the output-side to a desired level. Since the
proposed voltage regulator controls the magnitude of output voltage by using only the average of the scaling values
of the output voltage fed back by a simple voltage feedback circuit without phase synchronization, the control
method of output voltage is simple. Thus, the proposed voltage easily controls the entire system using a single-chip
microcontroller. In this paper, first, the operating principle of the power converter of proposed voltage regulator is
briefly explained, and then the feedback and control method of output voltage are described. The feasibility and
operating characteristics of proposed voltage regulator are verified through the experimental results of prototype. The
proposed voltage regulator can control and maintain the output-side AC voltage to a desired level by performing the
step-up/down control operation accurately, and shows a fast dynamic response characteristic.
VIEW FULL TEXT: https://ki-it.com/xml/34783/34783.pdf
domingo, 30 de junho de 2024
NO-BREAK PARA APLICAÇÕES RESIDENCIAIS, COMERCIAIS E INDUSTRIAIS DE 5kW COM INTERFACE PARA PAINEL SOLAR Carlos H. G. Treviso, Aziz E. Demian Jr., André L. B. Ferreira -Universidade Estadual de Londrina - Londrina - PR -BRASIL
NO-BREAK PARA APLICAÇÕES RESIDENCIAIS, COMERCIAIS E INDUSTRIAIS DE 5kW COM INTERFACE PARA PAINEL SOLAR
Carlos H. G. Treviso, Aziz E. Demian Jr., André L. B. Ferreira
Universidade Estadual de Londrina - UEL
CEP 86055-900, C.P. 6001, Londrina - PR -BRASIL
Resumo – Este artigo traz um projeto completo de um
No-Break de 5kW de saída, para aplicações residenciais,
comerciais e industriais, sendo uma importante
contribuição para o meio acadêmico e comercial. Permite
ainda a utilização de painéis solares, podendo tornar a
carga em questão menos dependente da rede elétrica,
além da utilização da energia limpa. Para tanto foi
implementado um protótipo em campo, com banco de
baterias de 48V (24 baterias de 12V/7,2A), com estimativa
de autonomia de 25 minutos para carga máxima.
RESIDENTIAL, COMMERCIAL AND
INDUSTRIAL APPLICATIONS FOR A 5kW
UPS UNIT WITH INTERFACE FOR SOLAR
PANNEL COUPLING
Abstract – This article presents the complete project
for a 5kW UPS unit devised, for residential, commercial
and industrial applications that is an important
contributing for the academic and commercial
environment. It allows the use of solar panels, that can
make the load less dependent on electric system and the
use of clean energy. For this was implemented a
prototype in field, with batteries bank of 48V (batteries of
12V/7,2A), with 25 minute estimate autonomy for
maximum load.
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terça-feira, 25 de junho de 2024
quinta-feira, 20 de junho de 2024
Power Line Noise Suppression using N-path Notch Filter in ECG Signal Acquisition-Doctoral Thesis Shibaura Institute of Technology-Author: Khilda AFIFAH
POWER LINE NOISE SUPPRESSION USING N-PATH NOTCH FILTER IN ECG SIGNAL ACQUISITION Author: Khilda AFIFAH Supervisor: Prof. Nicodimus RETDIAN
A thesis submitted in fulfillment of the requirements
for the award of the degree of
Doctor of Engineering
Shibaura Institute of Technology
2020/September
Abstract
POWER LINE NOISE SUPPRESSION USING N-PATH NOTCH FILTER IN
ECG SIGNAL ACQUISITION
by Khilda AFIFAH
Bio-sensing activities such as electrocardiogram (ECG) and electroencephalography (EEG) are challenging to obtain high-quality electrical signals because biomedical signals have small amplitude and low frequency. When performing a biomedical signal acquisition, common-mode noise such as power line interference appears
near the desired biomedical signal. It has made a problem when the power line
interference has amplitude higher than the primary signal.
Common-mode noise reduction has been recognized as important research. The
driven right leg (DRL) circuit was significant and effective to suppress commonmode noise. However, in the actual ECG measurements using DRL circuit, sometimes noise still appears at the output and mismatching in the electrode impedance
makes an impact to convert common-mode noise into a differential input voltage.
The body in DRL circuit is expressed as a single node and cannot be used to simulate the effect of the electrode impedance mismatch. Therefore, a new body model is
needed to be able to analyze the effect of electrode impedance mismatch and other
problem with common body model.
The proposed DRL circuit is an improved circuit from common DRL circuit. The
first improved DRL circuit, biomedical signal is expressed by current source in parallel with electrode impedance. The simulation results of improved circuit show mismatch between right and left electrode impedance makes noise appears at the output signal. The common human body from DRL circuit represented skin-electrode
impedance as a single node. The second improved circuit, the skin-electrode impedance
is expressed by resistance and stray capacitance are on each electrode. The simulation results of this improved circuit show the proposed circuit achieved smaller noise
when stray capacitance in the arm and right leg are the same. Combination between
proposed human body model and DRL circuit achieved output of the circuit is noise appear in the output signal. Therefore, human body model with DRL circuit still
need another filter to get high quality biomedical signal (noise free signal).
The other techniques to suppress common-mode noise have been proposed by
using digital and analog notch filters. The technique to suppress common-mode
noise used a digital notch filter, but it requires an analog front-end with a wide
dynamic range since the noise contaminated input signal need to be converted to
digital signal. The techniques with analog notch filter such as conventional Npath notch filters have disadvantage because these techniques require 3GΩ switches
off-resistance and 18 paths to reach notch depth target. The problem to implement previous N-path notch filter is the difficulty in implementing switch with offresistance. On-chip implementation of the system is also a challenge in the realization of portable ECG devices because the notch filter has a large time constant in
which requires large capacitance and high resistance.
Two topologies of N-path notch filter with leak buffer circuit have been proposed. The proposed N-path notch filters are Topology 1 and Topology 2. Topology
1 and Topology 2 achieved notch depth of 62.4dB and 63dB in measurement results
with sampling frequency 50Hz, even if the proposed circuits use less number of path
and small of switches off-resistance. Topology 1 and Topology 2 are verified using artificial ECG signal with 2Hz which is contaminated by power line interference
with frequency 50Hz or 60Hz. Experiment results show that the proposed circuit
significantly reduces the power line noise.
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