نتایج جستجو برای: voltage imbalance compensation

تعداد نتایج: 173828  

2011
Jian XIAO Yanzhang QIU Yunxia GAO Hongliang CHEN

Designed a Low-Dropout (LDO) Regulator, analyzed the circuit structure and the sub-circuit design With On-chip Frequency Compensation. Presented a novel internal frequency compensation circuit, fulfilled the use of low equivalent series resistance (ESR) load capacitor, and an accurate over-current protection circuit is realized, thus improves transient response and reduce the cost greatly. Test...

2015
Hanju Cha Jongmin Jo

phase stand-alone inverter is caused by unbalanced load and a dead time distorts inverter output voltage more unsymmetrically. When the inverter supplies unbalanced load, three phase output voltages include unbalanced odd harmonics but dq-axis voltages at synchronous reference frame have even harmonics with different magnitude each other. In this paper, a new compensation method is proposed to ...

2016
Naimish Zaveri Ajitsinh Chudasama

This paper gives a new insight into the concept of load compensation using shunt active filter (SAF) under ideal and non-ideal source voltage conditions. A novel approach based on an improved instantaneous active and reactive current component method is proposed. The performance of the proposed control strategy has been compared with instantaneous reactive power theory, symmetrical component th...

2015
Debashish U Menon Victoria H Meller

The different dose of X chromosomes in males and females produces a potentially fatal imbalance in X-linked gene products. This imbalance is addressed by dosage compensation, a process that modulates expression from an entire X chromosome in one sex. Dosage compensation acts on thousands of genes with disparate expression patterns. Both flies and mammals accomplish this with remarkable specific...

2010
Robert C. H. Chang C. H. Lin K. H. Lin Chen-Hao Chang Chih-Hung Lin Kuang-Hao Lin Chien-Lin Huang

This work presents a low-complexity architecture compensating for carrier frequency offset (CFO) and IQ imbalance circuits in OFDM receiver systems. A coordinate rotation digital computer (CORDIC) based sinusoid iteration generator (CSIG) is also developed for CFO estimation and correction in wireless local area network (WLAN) communications. Besides the main effect from the multi-path, some no...

2017
Mohsin Aziz Fadhel M. Ghannouchi Mohamed Helaoui

The majority of techniques that deal with the mitigation of in-phase and quadrature-phase (I/Q) imbalance at the transmitter (pre-compensation) require long training sequences, reducing the throughput of the system. These techniques also require a feedback path, which adds more complexity and cost to the transmitter architecture. Blind estimation techniques are attractive for avoiding the use o...

2007
Kyung Ki Kim Yong-Bin Kim

This paper presents two novel compensation circuits for leakage current and power supply noise (PSN) in phase locked loop (PLL) using nanometer CMOS technology. The leakage compensation circuit reduces the leakage current of the charge pump circuit which becomes more serious problem due to the thin gate oxide and small threshold voltage in nanometer CMOS technology and the PSN compensation circ...

2012
John George

Modern power system networks use active power filters for compensation of harmonic currents generated by non linear loads. In this paper a new method for generating reference currents for harmonic and reactive power compensation is proposed. The proposed method has the advantage that it generates the reference currents irrespective of the supply voltage and load conditions. So the source has to...

2014
Nayan N. Pandya Hemant I. Joshi Bhavik N. Suthar

This paper describes sensitivity indicator method to identify weakest bus of the system. It also describes method of calculating the amount of reactive power to be injected at the load bus to avert the voltage instability as the load on the load bus increases. In this paper IEEE-57 BUS system has been considered. First, the weakest bus is identified using sensitivity indicator method. Then Load...

2014
NOREZMI JAMAL SHAKIR SAAT

This paper presents an Inductive Power Transfer (IPT) system design using a Class E converter circuit. The Class E converter is used to drive a nonlinear load and theoretically it offers 100% efficiency. To be specifically, the performance of IPT system at 1MHz operating frequency and 9V DC supply voltage is analyzed. Voltage doubler rectifier and Darlington circuit are proposed in this paper t...

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