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It is generally accepted that interleaving techniques are efficient at reducing the input/output ripples and increasing the power output of boost converters operating in critical conduction mode. This paper gives performance comparison between two famous techniques used to drive power switches; pulse width modulation (PWM) and simplified sigma delta modulation (SSDM). The control strategy of the first...
This paper presents a battery-less power management circuit for RF energy harvesting applications. In general rectenna (antenna and rectifier) exhibits the maximum efficiency for a particular range of load resistance at different values of RF power received by the antenna. To track maximum power transfer and reduce the power overhead of the various modules an efficient and simple scheme is presented...
Boost converters have nonlinear characteristics by semiconductor switching elements in a circuit. Generally, controllers are designed by a linearized model of the boost converter based on state space averaging method. This study proposes design scheme considering discontinuous conduction mode without linearization. In detail, firstly, modeling of boost converter in discontinuous conduction mode is...
Controlling a Power Factor Corrected (PFC) boost converter is not a trivial task, because the higher the dynamic performance, the higher is the input current distortion. On the other hand, recent applications of these converters require fast transients in response to disturbances, such as sudden variations of load power, reference voltage and input voltage. Better performance can be obtained adding...
This paper deals with bifurcation analyses in current programmed DC/DC Boost converter and exhibition of chaotic behavior. This phenomenon occurs due to variation of a set of the studied circuit parameters (input voltage and a reference current). Two different kinds of bifurcation paths have been observed as part of another bifurcation, arising from variation of suitable chosen parameter.
In this paper a fuzzy logic controller for Solar powered DC -DC boost converter is planned. Here for simplification, the PV system is taken as a constant DC Voltage source. The output response of the boost converter, is controlled by changing its duty cycle and the controller is planned to change the duty cycle. The simulation is formulated by MATLAB simulation program and PSIM software. Using fuzzy...
The power converter is a critical component of distributed generation system, particularly for renewable energy system based distributed generators. This paper presents a PV based boost converter with closed loop control by the use of PID controller. The PV module is modelled in MATLAB-Simulink Environment and is directly fed to the boost converter and the duty ratio control is obtained by means of...
This paper presents analysis and design of low source current ripple high-gain boost converter. The proposed converter exhibits higher voltage gain, almost double, in comparison to the well-established conventional boost converter. A steady-state analysis is made, and then converter elements design expressions are established. These design expressions are then used to design a 24 to 100 V, 50 W prototype...
Power Factor which is the ratio between the real or actual power and the apparent power is a very essential parameter in power system. It indicates how effectively the real power of the system has been utilized. In any electrical power system, a load with a low power factor draws more current than a high power factor load, for the same amount of useful power transferred. The most popular topology...
This paper explains a current sensing technique suitable for digital controller implementation. The technique uses only one analog comparator to estimate the DC as well as ripple of the inductor current of a regulated DC-DC converter. For systems where input voltage variation is anticipated, a low speed ADC can be used to take care of the variation in input voltage for inductor current estimation...
A new open loop control technique of boost converter to mitigate the temperature effect on current control of LED driver will be presented. The presented open loop control technique achieves zero voltage turn on in order to significantly reduce the reverse recovery loss of diode and mitigates the temperature impact on the constant current control. The basic idea of the presented control technique...
This paper presents a boost converter used to harvest photovoltaic energy, one of the most important renewable energy sources, and to converter it into a power supply for micro power devices. To meet the low power requirements of applications such as wireless sensor network, the converter is designed to work at burst-mode to reduce power consumption. And a simple Maximum Power Point Tracking (MPPT)...
This work first generates ±1 V output via the self-startup pulse transformer boost converter. Another on-chip single-stage voltage tripler then generates 3 V output from the extra output power of boost converter, which is shunted otherwise. Higher voltage headroom is instrumental for sensor, analog and RF circuits. Charge pump clock frequency is adaptively tracking the input voltage, which is sensed...
In conventional inverters, implementation of a transformer greatly enhances the Total Harmonic Distortion (THD) which is counted to have a negative impact on the inverter output. In order to overcome this limitation, transformer can be replaced by buck and boost converters thereby making a transformer-less inverter which will greatly reduce the THD and enhance the efficiency. In this paper, the design...
In this paper, a generalized mathematical model for buck, boost and buck-boost converters is derived. An average power balance control (APBC) scheme is proposed and analyzed for these converters. The proposed scheme consists of two control loops, the fast inner current loop uses sliding mode control (SMC) and outer voltage loop uses the average power balance algorithm (APBA). The existence condition...
Dc-dc converter control has major role in solar or photovoltaic (PV) systems with maximum power point tracking (MPPT). In this paper, analysis of multiphase boost converter for PV battery charging system is presented. Mathematical modeling of PV array and three phase boost converter is described and the simulation results are presented for 4.8kW PV array based battery charging system. Input voltage...
It has been an established fact that the presence of Constant Power Load (CPL) in DC micro-grid causes instability as it has negative impedance characteristic. This poses a serious challenge for the stability of the DC micro-grid in spite of ensuring stability of individual converters. Some efforts are made by the community to address the issue. In this paper, we have proposed a sliding-mode controller...
This paper presents an integrated monolithic voltage-mode DC-DC boost converter with low-power control circuit. With the integration of both power switches and control circuit within same CMOS technology, the DC-DC boost converter offers a low-power operation with a small chip-size. The amplifier, oscillator, and comparator in the control circuit are designed with the supply voltage of 3.3V and the...
A new integrated circuit for motor drives with dual mode control for EV/HEV application is proposed. The proposed integrated circuit allows the PMSM to operate in motor mode or acts as boost inductors of Boost converter, and thereby boosting the output torque coupled to the same transmission system or DC-link voltage of inverter connected to the output of the integrated circuit. In motor mode, the...
Recently environmental problems have attracted great attention on a worldwide scale. Therefore, the exploitation of clean-energy resources such as solar arrays, wind generators, fuel cells, and so forth has been concretely attempted. In this case, a multiple-input dc-dc converter is useful to combine the several input power sources and to supply the regulated output voltage for the load from the power...
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