Design of a High Linearity Four-Quadrant Analog Multiplier in Wideband Frequency Range 2198 Views
In this paper, a voltage mode four quadrant analog multiplier in the wideband frequency rangeis designed using a wideband operational amplifier (OPAMP) and squaring circuits.
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Design of Wireless Biotelemetry Powering System for Implanted Sensing Devices in Human Body 2219 Views
In this paper, a wireless power transfer system is used to power the implanted sensors near the skin of the human body.
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Linearizing of Low Noise Power Amplifier Using 5.8GHz Double Loop Feedforward Linearization Technique 1751 Views
In this paper, a double loop feedforward linearization technique is analyzed and built with a MMIC low noise amplifier “HMC753” as main amplifier and a two-stage class-A power amplifier as error amplifier. The system is operated with 5V DC supply at a center frequency of 5.8GHz and a bandwidth of 500MHz.
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Design of a Linear Synchronous Reactor using a DC Voltage Controlled Statcom 2085 Views
In this paper, a single-phase linearly and continuously controlled synchronous reactor is presented. It is a harmonic-free single-phase statcom. The statcom is constructed of a full bridge voltage source inverter shunted by a DC capacitor and absorbs reactive power from the AC supply through a somewhat small series reactor.
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Design of a High Linearity 6-GHz Class-F Radio Frequency Power Amplifie 2024 Views
In this study, a high linearity class-F RF power amplifier is introduced. It is designed to operate at a frequency of 6 GHz with a bandwidth of 400MHz. The amplifier mixes between the characteristics of conventional switch mode class-F and class B amplifiers.
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Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller 1719 Views
In this paper, a new continuously and linearly controlled capacitive static VAR compensator is proposed for the automatic power factor correction of inductive single phase loads in 220V 50Hz power system networks. The compensator is constructed of a harmonic-suppressed TCR equipped with a new adaptive current controller.
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Design of an Almost Harmonic-free TCR 1681 Views
In this study, the traditional thyristor controlled reactor is conditioned to be an almost harmonic-free inductive static Var compensator. The proposed configuration is constructed of a traditional TCR shunted by a parallel resonance circuit and the parallel combination is connected in series to a series resonance circuit.
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Design of a Three-Phase Statcom-Based Inductive Static VAR Compensator Using DC Capacitor Voltage Control Scheme 2029 Views
In this study, a three-phase continuously controlled harmonic-free inductive static VAR compensator is presented. The compensator is built of a three-phase voltage source inverter based statcom.
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Design of a Statcom-Based Harmonic-Free Static VAR Compensator for Load Balancing Purposes 1914 Views
In this paper, a bipolar (capacitive and inductive) static VAR compensator is built on the basis of statcom fundamentals. The designed compensator exchanges wide range of pure reactive power with the ac supply without significance of real power contribution.
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Design of a Three-phase Voltage Regulator Equipped with Voltage Balancing Technique 1967 Views
This paper presents a controlling strategy based on the addition of three reactive T-section circuitries connected in series with a star-connected 3-phase load impedance.
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Design of an almost continuously controlled three-phase static VAR compensator for power factor correction purposes 1800 Views
In this paper, a three-phase four-wire automatic power factor correction system is designed and tested. This system employs three-phase Wye-connected thyristor switched-capacitor banks to generate a controllable static VAR. Each capacitor bank is constructed of five binary weighted thyristor switched-capacitors.
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Design and Implementation of an Adaptive Electronic Speed Governor 1150 Views
In this paper the role of the speed governor and some of its techniques are reviewed. The adopted governor is an electronic speed governor based mainly on analogue computations.
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Insulated-Gate Bipolar Transistor Controlled Reactor 1480 Views
In this paper a controlled reactor using insulated-gate bipolar transistor (IGBT) is presented. Controlled reactors are usually implemented by using thyristors since the mid-1970’s and they are usually referred to as thyristor-controlled reactors.
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Automatic Power Factor Correction Using a modified Statcom as a Continuously Controlled Capacitive Static VAR Compensator 1348 Views
In this paper an automatic power factor correction system based on a new vision to statcom concept is presented. The reactive component of the load current is supplied by a statcom built of a halt-bridge voltage source inverter feeding a reactor and shunted by two dc capacitors.
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Design of a Continuously Controlled Linear Static Var Compensator for Load Balancing and Power Factor Correction Purposes 1228 Views
In this paper a new configuration of static Var compensator is presented. The configuration is a parallel combination of a binary thyristor switched-capacitor bank (BTSCB), a binary thyristor switched-reactor bank (BTSRB), and a thyristor controlled reactor (TCR). This compensator is capable of responding equally to both capacitive and inductive reactive current or reactive power demands for load balancing and power factor correction purposes.
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Harmonics Reduction of Thyristor Controlled Reactor with Minimal No Load Operating Losses 1220 Views
In this paper a new approach of thyristor controlled reactor (TCR) harmonics treatment is presented. The design methodology of this approach is based on suppressing the TCR harmonic current components by inserting a series LC circuit between the ac source and the parallel combination of TCR and filtering circuit.
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Design of a 31-Level Single-Phase Voltage-source Inverter Producing almost Sinusoidal Voltage Waveform 1173 Views
In this paper a single-phase voltage-source inverter of 31 non-zero levels is designed. These levels follow a sinusoidal path and are constructed by using only five dc voltage sources instead of thirty-one as traditionally employed in multilevel technology of voltage-source inverters.
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Design of a Three-phase Inverter for Variable AC Drive Purposes using a Pulse Width Modulation Based on a New Strategy 1349 Views
In this paper, a pulse width modulation (PWM) technique based on a new strategy is presented first. A three-phase voltage-source inverter based on this technique is then designed for variable AC drive purposes.
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Design of an Optimally Self-Protected Medium Frequency Power Supply for Induction Heating Purposes 1307 Views
In this paper, the basic elements of the induction heating process are reviewed. The expected risks accompanying the power supplies when they are operated with induction-inductors are stated and a remedial solution is presented.
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Single Phase Voltage Control Using Switched Inductor-Switched Capacitor Variable Susceptance 1148 Views
Almost smooth phase voltage control with real time is adopted here. The basic controlling parameter is a pure capacitive or inductive susceptance.
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Design of an Asynchronous Frequency Multiplier for Two Sinusoidal Signals 1038 Views
In this paper the conventional frequency multipliers are reviewed and a new technique is adopted.
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A new design of an Electronic Protector for Single Phase Electrical Equipments 991 Views
This protector is designed of simple and discrete electronic devices without using any transformer.
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Design of a High Linearity 6-GHz Class-F Radio Frequency Power Amplifier 1337 Views
The amplifier mixes between the characteristics of conventional switch mode class F and class B amplifiers
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