Fully‐balanced four‐terminal floating nullor for ultra‐low voltage analogue filter design

2017 ◽  
Vol 11 (2) ◽  
pp. 173-182 ◽  
Author(s):  
Montree Kumngern ◽  
Fabian Khateb ◽  
Tomasz Kulej
Keyword(s):  
Low Voltage ◽  
Filter Design ◽  
Four Terminal Floating Nullor ◽  
Analogue Filter

scholarly journals Series Active Filter Design Based on Asymmetric Hybrid Modular Multilevel Converter for Traction System

Electronics ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 134 ◽  
Author(s):  
Muhammad Ali ◽  
Muhammad Khan ◽  
Jianming Xu ◽  
Muhammad Faiz ◽  
Yaqoob Ali ◽  
...  
Keyword(s):  
Low Voltage ◽  
Filter Design ◽  
Switching Frequency ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Medium Voltage ◽  
Converter Topologies ◽  
Asymmetric Hybrid ◽  
Simulation Results ◽  
Traction System

This paper presents a comparative analysis of a new topology based on an asymmetric hybrid modular multilevel converter (AHMMC) with recently proposed multilevel converter topologies. The analysis is based on various parameters for medium voltage-high power electric traction system. Among recently proposed topologies, few converters have been analysed through simulation results. In addition, the study investigates AHMMC converter which is a cascade arrangement of H-bridge with five-level cascaded converter module (FCCM) in more detail. The key features of the proposed AHMMC includes: reduced switch losses by minimizing the switching frequency as well as the components count, and improved power factor with minimum harmonic distortion. Extensive simulation results and low voltage laboratory prototype validates the working principle of the proposed converter topology. Furthermore, the paper concludes with the comparison factors evaluation of the discussed converter topologies for medium voltage traction applications.

Low-voltage Analog CMOS filter design.

2005 ◽  
Author(s):  
M. Steyaert ◽  
J. Crols ◽  
S. Gogaert ◽  
W. Sansen ◽  
K.U. Leuven
Keyword(s):  
Low Voltage ◽  
Filter Design ◽  
Analog Cmos

Galvanic Isolation and Output LC Filter Design for the Low-Voltage DC Customer-End Inverter

2014 ◽  
Vol 5 (5) ◽  
pp. 2593-2601 ◽  
Author(s):  
Aleksi Mattsson ◽  
A. Lana ◽  
P. Nuutinen ◽  
V. Vaisanen ◽  
P. Peltoniemi ◽  
...  
Keyword(s):  
Low Voltage ◽  
Filter Design ◽  
Lc Filter

scholarly journals Distributed Power Quality Conditioning System for Three-Phase Four-Wire Low Voltage Networks

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4915 ◽  
Author(s):  
Valery Dovgun ◽  
Sergei Temerbaev ◽  
Maxim Chernyshov ◽  
Viktor Novikov ◽  
Natalia Boyarskaya ◽  
...  
Keyword(s):  
Power Quality ◽  
Low Voltage ◽  
Filter Design ◽  
Design Procedure ◽  
Active Filters ◽  
Hybrid Filter ◽  
Harmonic Compensation ◽  
Distributed Power ◽  
Voltage Unbalance ◽  
Three Phase

This paper presents distributed power quality conditioning system to compensate current and voltage distortions in three-phase four-wire networks caused by unbalanced non-linear single-phase loads. The proposed conditioning system consists of several hybrid filter units installed in various nodes for compensation of excessive neutral currents and voltage distortions in a selected area of the distribution network. The system is open and it can be easily modified by installation of new filter units. A novel hybrid filter design procedure based on filter frequency characteristics optimization in the parameters of passive and active parts is presented. A digital system of control signal computation for active filters based on the use of modern methods of spectral analysis is considered. The proposed digital control system enables selective compensation of fundamental and harmonic components. The mathematical model of the proposed power quality conditioning system is developed in the MatLab software. The simulated results show that the presented conditioning system reduces the level of neutral conductor currents and the voltage unbalance as well ensures harmonic compensation in three-phase four-wire networks.

HIGH-FREQUENCY LINEAR MULTIPLE-OUTPUT CMOS TRANSCONDUCTANCE AMPLIFIER FOR CURRENT-MODE FILTERS

2006 ◽  
Vol 15 (05) ◽  
pp. 701-717 ◽  
Author(s):  
HSIAO WEI SU ◽  
YICHUANG SUN
Keyword(s):  
High Frequency ◽  
Dynamic Range ◽  
Low Voltage ◽  
Filter Design ◽  
Current Mode ◽  
Cmos Process ◽  
Common Mode ◽  
Differential Input ◽  
Transconductance Amplifier ◽  
Linear Differential

A high-frequency highly linear tunable CMOS multiple-output operational transconductance amplifier (MO-OTA) for fully balanced current-mode OTA and capacitor (OTA-C) filters is presented. The MO-OTA is based on the cross-coupled pairs at the input and provides two pairs of differential outputs. A simple common-mode feedback (CMFB) circuit to stabilize the DC output levels of the MO-OTA is also proposed and two such CMFB circuits are used by the MO-OTA. The proposed MO-OTA is suitable for relatively low voltage (2.5 V) applications as its circuit has only two MOS transistors between the supply and ground rails. Simulated in a TSMC 0.25 μm CMOS process using PSpice, the MO-OTA has at least ± 0.3 V linear differential input signal swing with a single 2.5 V power supply and operates up to 1 GHz frequency. The MO-OTA has a THD less than -46 dB for a differential input voltage of 0.9 Vp-p at 10 MHz, dynamic range (DR) at THD = -46 dB is over 50 dB, and power consumption (with the common-mode feedback circuit) is below 8 mW for the whole tuning range. A fully balanced multiple loop feedback current-mode OTA-C filter example using the proposed MO-OTA is presented. This example also shows that the current-mode follow-the-leader-feedback (FLF) structure can achieve good performances for OTA-C filter design.

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