نتایج جستجو برای: frequency converter

تعداد نتایج: 503368  

2015

This paper compares the expense of power semiconductors and passive components of a (2.3 kV, 2.4 MVA) two-level, three-level. the THD of the seven level output voltage are analysed. The circuit diagram of conventional interleaved boost converter is shown in Fig.1. Fig. 1 Circuit Diagram. Please provide the circuit diagram. Thank you. The Design A simple layout for the proposed temperature to vo...

This paper proposes an improved control method based on modified Delta-Sigma Modulator (DSM) to enhance transient response and improve harmonic contents of buck DC-DC converter. The main advantages of the proposed method are improving the output voltage frequency spectrum, correction of the output voltage harmonic contents and sideband harmonics, reduction of switching noise peaks at the output...

2006
Sean Brennan

INTRODUCTION This application note describes the circuit architecture and details required to measure the impedance profile of a grounded sensor using the AD5933 impedance-to-digital converter. The AD5933 is a high precision impedance converter system (see Figure 1) that combines an on-board frequency generator with a 12-bit, 1 MSPS, analog-to-digital converter (ADC). The frequency generator al...

2011
Herminio Martínez-García Yolanda Bolea-Monte Juan Gámiz-Caro

This article shows the proposal of a linear–assisted converter or linear–&–switching hybrid converter with a constant switching frequency. The control loop of the system is based on the current–mode technique. The main disadvantage of a converter with current–mode control is the inherent instability of the loop when switch duty ratios are greater than 0.5. In order to make stable the proposed l...

2017
Pengyuan Chen Jonghoon Kim

In this paper, a multiphase sliding mode (MPSM) control method with a master–slave structure is proposed and analyzed in order to suppress ripples at input terminals or output terminals in DC/DC converter applications. With the proposed MPSM, the switching frequency of a multiphase DC/DC converter does not need to be operating such a high switching frequency as adopted in a conventional sliding...

2015
Deepak Kumar Nayak S. Sheik Aalam R. Murugan K. Selvakumarasamy S. Rama Reddy

A full-bridge CLLL DC/DC converter that uses an auxiliary circuit is proposed in this paper. The soft switching of lagging leg and auxiliary switches is achieved by the proposed circuit for providing reduced switching losses and high efficiency. The theoretical detail operation of the converter is presented. The proposed converter is verified using MATLAB simulation. Closed loop and open loop c...

2008
ERNST D. SCHMITTER

Monitoring electromagnetic waves in the Ultra Low Frequency (ULF) range between 1 mHz and 1 Hz is essential for an understanding of the processes in the earths magnetosphere. Also earthquake prone areas are under suspect to emit precursor ULF signals. We discuss a receiving system using a solenoid sensor and Negative Impedance Converter (NIC) as front end. The NIC effectively extends the freque...

2016
Rajesh K M V Sudarsan Lung-Sheng Yang Tsorng-Juu Liang

This paper presents the design and simulation of the zero voltage zero current switched non isolated dcdc boost converter. Many applications powered by batteries need high performance, high step up dc-dc converters. When the converter switches are turned on and off at high frequency to meet dynamic and steady state requirements, the losses add on in the converter. When current through the switc...

2013
V. Rajasekaran

The LLC resonant converter has been widely used as a dc-dc converter. It is one of the most efficient solution for designing wide output voltage switched-mode power supplies (SMPSs).A Novel design procedure for LLC resonant converter to obtain wide load range has been presented in this paper. For wide output range applications, large values of converter inductance ratio and Switching Frequency ...

2013
R. Hemalatha

This paper describes the design of power electronic converter circuit and simulating the power electronic converter circuit using Matlab/Simulink for induction heating equipment. The circuit designed has the load as induction coil and high frequency electricity is required to heat the workpiece placed within the induction coil. The output power of the load coil is varied by changing the frequen...

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