Output Super Lift Luo Converter Research Articles

Optimization of solar energy using artificial neural network vs recurrent neural network controller with positive output super lift Luo converter

In today’s world, the need for clean energy is crucial. Historically, Renewable energy sources like hydropower, wind, and solar offer sustainable solutions. Photovoltaic (PV) systems convert sunlight into electricity using semiconductor PV cells, which have been efficient for over 30 years. PV cell efficiency depends on irradiance (solar photon intensity) and temperature. Higher irradiance increases efficiency, while higher temperatures decrease it. PV systems, despite low voltage outputs, can be optimized using DC-DC Positive Output Super Lift Luo converters to match load requirements, enhancing system efficiency. Solar irradiance varies throughout the day, affecting PV cell output. Maximum Power Point Trackers (MPPTs) adjust the system's operating point to maintain peak efficiency. This study focuses on designing AI controllers to manage MPPT. We compare the performance of Artificial Neural Networks (ANN) and Recurrent Neural Networks (RNN) using three datasets. The goal is to identify the most efficient AI controller for optimizing solar energy systems.

Design and Implementation of Fuzzy sliding mode control (FSMC) approach for a Modified Negative Output Luo DC-DC Converter with its comparative analysis

Switching power converters bring a desired output magnitude using semiconductor devices. These switching converters are generally classified as voltage lift and super lift. The conventional lift converters such as buck, boost and buck–boost come under the category of voltage lift technique, in which the output voltage increases in arithmetic progression. The other lift approach that increases the output voltage in the geometric progression is the super-lift method. Nowadays super-lift converters find their role in various applications, because of their high gain and low ripple. The converter taken for analysis is a modified negative output super-lift Luo converter (MNOSLC). Current mode control (CMC) is employed to maintain a stable DC voltage at the load side. This is investigated using different types of controllers such as PI, fuzzy, sliding mode controller (SMC) and fuzzy SMC. The performance of these controllers is compared and it is found that fuzzy SMC results in better line and load regulation. A prototype is developed that validates the simulation results.

A New Effective APEAO Algorithm Assisted Positive Output-Super Lift Luo Converter with PV-Wind Energy System

The importance of renewable energy resources in the energy province necessitates the use of photovoltaic (PV) and wind systems to power brushless DC (BLDC) motors for applications such as water pumping and automobiles. In this research, an optimized MPPT-based positive output super-lift Luo converter (PO-SLLC) is presented for a hybrid power system with a BLDC motor to overcome the constraints of ordinary DC–DC converters. The Luo converter produces a positive output voltage which aids in achieving a high power density with fewer ripples in the voltage and current profile. The output voltage grows in geometric progression, increasing the converter’s efficiency, according to its mathematical model. Adjustment parameter enhanced Aquila optimization (APEAO) is used to optimize the duty cycle of the PO-SLLC from the MPPT controller and the controller parameters of the PI controller of the wind system. The proposed system’s behavior for variations in irradiation patterns with constant load torque is simulated in MATLAB/Simulink. The settling time and overshoot obtained with the proposed optimized controller are compared to those obtained with other optimization controllers, such as ant colony optimization (ACO), genetic algorithm (GA), Aquila optimization (AO), advanced version of harmony search algorithm (2N[Formula: see text][Formula: see text][Formula: see text]1-HSA) and opposition based quantum bat algorithm (OQBA) and it is demonstrated that the proposed APEAO optimized controller has good dynamic performance.

Conducted electromagnetic interference mitigation in super-lift Luo-converter for electric vehicle applications

In this article, a digital chaotic pulse width modulation (DCPWM)-dependent electromagnetic interference (EMI) noise attenuating procedure has been implemented. With the aid of a field programmable gate array (FPGA), a randomized carrier frequency modulation with a fixed duty cycle has been generated through chaotic carrier frequency, and this process is called DCPWM. Conducted EMI suppression is achieved in a 200 kHz, 40 W elementary positive output super lift Luo (EPOSLL) converter using the DCPWM technique. The results are compared and validated with periodic PWM over DCPWM in simulation and hardware with electromagnetic compatibility (EMC) standards. Besides, 9 dBV (2.81 V) of conducted EMI noise has been minimized in the DCPWM approach against periodic pulse width modulation method for the EPOSLL converter in electric vehicles applications.

Effect of switched-capacitor on super-lift Luo converter

With the increasing need for solar energy and the need for DC-DC converters that are more efficient, smaller in size, less expensive, and faster in response, in this paper, we will modify the positive output super-lift Luo converter using a switched-capacitor cell. It consists of two capacitors that are charged in parallel and discharged in series to raise the output voltage, the use of capacitors in-stead of inductors increases the voltage, because capacitors are more efficient and have a smaller size than inductors and provide faster and smoother charging and discharging than inductors, so a capacitive cell has been used. The circuit was simulated using the physical security information management (PSIM) program. The current, voltage, and gain co-efficient waves were analyzed and the theoretical equations were proven. The circuit was also linked with the maximum power point tracker using the same program with a solar cell to get the most benefit from the solar energy using this type of converter.

Comparison between boost and positive output super lift Luo converters to improve the performance of photovoltaic system

Employment DC-DC switching power converters in many different areas become is very important. In this paper, three different models of the photovoltaic solar module were proposed in order to designing, implementation, and simulated them in MATLAB/Simulink with the boost converter circuit first and then with the positive output super lift Luo (POSLL) converter circuit again. A comparison was made between the two circuits, as well as a theoretical and simulation values were made and compared between them (in the same standard conditions) for each of these selected models. So as to improving solar system performance and clarify the functions played by POSLL in power electronic circuits.

A New Non-Isolated High-Gain Single-Switch DC–DC Converter Topology with a Continuous Input Current

An ultra-high step-up, non-isolated DC–DC converter with a continuous input current was developed as a result of this research. This converter’s architecture consists of a voltage multiplier cell (VMC), a positive output super lift Luo converter (POSLLC), and a quadratic boost converter (QBS) (also referred to as a cascaded boost topology (CBT)). Thus, the bold points of the topologies mentioned earlier enhance the voltage gain of the proposed topology. It is important to note that when the duty cycle is at 50%, the converter attains a voltage gain of ten. Additionally, the constant input current of the topology reduces the current stress on the input filter capacitor. This converter’s topology was investigated and studied under various operating conditions: ideal and non-ideal modes, as well as continuous and discontinuous current modes (CCM/DCM). The converter’s efficiency and voltage gain were also compared to those of newly proposed converters. PLECS and MATLAB software tools were used in the investigation of the proposed topology. A 200 V/200 W prototype was constructed. The experimental results validated the theoretical study and the simulation results. The extracted efficiency was 91%.

An ultra high step‐up DC‐DC converter based on VMC, POSLLC, and boost converter

In this article, an ultra-high step-up DC-DC converter has been proposed. The topology of the converter is a combination of a cascaded boost converter, positive output super lift Luo converter (POS LLC), and a voltage multiplier cell (VMC). The lower values of the duty cycle provide a more than 10 times voltage gain. Consequently, the high voltage gain has been provided beside the lower value of the voltage/current stress of the semiconductor and an acceptable value of the efficiency. With a detailed look, it can be understood the voltage gain and efficiency of the converter have become 12 times and 90.5% based on the experimental results while the percentage of the duty cycle has become 50%. Moreover, by the mentioned percentage of the duty cycle, the normalized value of the voltage/current stress of the semiconductors has become lower than 50% by exception of only 3 semiconductor-based components which have voltage/current stresses more than 50% and lower than the unity. In addition to all the mentioned advantages, the input current has remained continuous which solves the challenges of the input filter's capacitor. Moreover, the voltage/current stresses have been kept low-valued. The ideal mode of the topology has been discussed for both continuous/discontinuous current modes. The non-ideal mode of the topology and its related comparisons have been done. A comparison of the voltage/current stresses of the semiconductor-based components has been done. Moreover, the comparison of the losses and efficiency have been done for the proposed converter and recently suggested topologies. In addition, the efficiency has been discussed for the different values of its effective factors and the resulted behavior has been expressed. Finally, the simulation and experimental outcomes have been extracted for a 120 W output power and compared with the theoretical relations' results.

Design of Hybrid Posicast Control for Super-Lift Luo Converter

This article investigates a new Hybrid Posicast Controller (HPC) for Fundamental Positive Output Super-Lift Luo Converter (FPOSLLC) in Continuous Conduction Mode (CCM). It is a feedforward controller that decreases the flippantly damped plant overshoot in the step result. However, because of fluctuations in the natural frequency, the traditional controller technique is sensitive. In this article, a novel HPC is built to alleviate the FPOSLLC’s undesired sensitivity and load voltage control. HPC has a feedback loop and a posicast structure. The main design function of posicast is its independent computational time delay. By creating a MATLAB/Simulink model, the FPOSLLC implementation with HPC may be verified under various operating conditions. In comparison to standard PID control, the results of the new HPC have produced little noise in the control signal.

Improving the design of super-lift Luo converter using hybrid switching capacitor-inductor cell for PV system

<p>In this article, an improvement to the positive output super-lift Luo converter (POSLC) has been proposed to get high gain at a low duty cycle. Also, reduce the stress on the switch and diodes, reduce the current through the inductors to reduce loss, and increase efficiency. Using a hybrid switch unit composed of four inductors and two capacitors it is replaced by the main inductor in the elementary circuit. It’s charged in parallel with the same input voltage and discharged in series. The output voltage is increased according to the number of components. The gain equation is modeled. The boundary condition between Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) has been derived. Passive components are designed to get high output voltage (8 times at D=0.5) and low ripple about (0.004). The circuit is simulated and analyzed using MATLAB/Simulink. Maximum power point tracker (MPPT) controls the converter to provide the most interest from solar energy.</p>

A Power Converter Based on the Combination of Cuk and Positive Output Super Lift Lou Converters: Circuit Analysis, Simulation and Experimental Validation

This paper has proposed a novel transformerless high gain DC-DC converter. The combination of the Cuk and positive output super lift Luo converter (POSLL converter) has formed the topology of the recommended topology. The continuous input current, the low normalized value of the current/voltage stresses of the semiconductors, the low dimension of the topology due to less stored energy, the common ground point of the input/output terminals, and the high efficiency besides the high voltage gain are the bold features of the proposed topology that makes it suitable for applying in renewable applications and High-intensity discharge lamps (HID). Such a topology has been designed for a continuous conduction mode. However, the function of the converter has been explained in both continuous/discontinuous conduction modes (CCM/DCM). The governing equations of both ideal/non-ideal states have been reported. Moreover, the recommended topology with the recently suggested high gain topologies has been compared in both the ideal/non-ideal modes. The simulation and experimental outcomes have been reported at the end of this study. The simulation in PLECS and experiments on a 120 W prototype have led to substantial results that confirm the validity and applicability of the theoretical analysis on the proposed converter.

Solar power based positive output super-lift Luo converter using fuzzy logic controller

Photovoltaic (PV) power generation is employed to meet the increasing demand for energy and of cleaner form. Though renewable and high energy using PV can be produced, they have certain disadvantages. PV cells have a low voltage (approx. 0.5V) rating and they have to be connected in series when higher voltage is required. These cells when connected in series should have identical electrical characteristics to avoid ripples in the output voltage and current, but it is not possible practically. To avoid this miss-match, converter circuits are employed. The major drawbacks in most power converters are reduced voltage gain and their tendency to generate harmonics in the supply system and the load circuit. To overcome these limitations, a positive output super-lift Luo converter is designed. A Positive Output Super Lift Luo converter (POSLC) is a powerful DC-DC converter where the voltage is converted from positive source voltage to positive load voltage as it produces positive voltages of comparatively higher ranges than those of conventional types. The super-lift technique also overcomes the effect of parasitic elements and thus minimizing the ripples in the output voltage and current. In addition to this, the voltage build-up can be achieved by implementing the super-lift technique where the output voltage rises in geometric progression with increased voltage transfer gain and high power density. In this paper fuzzy control is used to produce better-controlled voltage and a more refined output. The performance of POSLC with and without implementation of fuzzy control has been successfully simulated and verified using MATLAB/SIMULINK as well simulation model also developed and analyzed with Proteus package.

Performance Analysis and Comparative Study of Different Types of DC-DC Converters

This paper presents the design, analysis and comparison of different types of dc-dc converters. Now days due to lack of conventional energy sources like coal, petrol, diesel etc., demand of electricity is rising day to day. To fulfill this demand of electrical energy alternative methods are very much important now. The researchers stand motivating in solar energy generation, dc-dc converters etc. In this paper Performance analysis of different dc/dc converters and comparative study of them is focused. All converters will work in Continuous conduction mode. The performance analysis of different converters (Buck, Boost, Buck Boost, CUK, SEPIC, Positive Output Super-Lift Luo Converter) and comparison of those converter’s simulation results discussed using MULTISIM 14.0.

Performance improvement of Photo-Voltaic panels by Super-Lift Luo converter in standalone application

DC-DC converters play a vital role in the conditioning of power in the Renewable energy integrated standalone system. The DC-DC converters are of different topologies among them one of the efficient topologies in terms of power conversion is the Luo converters. The Luo converter with Super-Lift improves power efficiency by boosting the voltage in geometric progression. A Positive Output (P/O) Super-Lift Luo converter is compared with the performance of the conventional Boost converter wherein the converter minimizes the current ripples. The output of the standalone system can be improved by backing the Photo-Voltaic system with a Maximum Power Point Controller. The MPPT controller makes use of the traditional Perturb and Observe algorithm for harnessing maximum power from the PV panels.

Nonlinear Control for Positive Output Super Lift Luo Converter in Stand Alone Photovoltaic System

This paper proposes a stand-alone photovoltaic (PV) system based on a DC-DC positive output super lift Luo (POSLL) converter. A conventional sliding mode control, a sliding mode controller using a simple sign function and a linear controller using proportional integrator (PI) are used for the control of the PV panel voltage and POSLL converter inductor current and these methods are compared together. The POSLL converter is a DC-DC converter with higher voltage gain compared to other conventional DC-DC converters, and has a good voltage regulation with a simple structure. The stability and accessibility of the proposed nonlinear controls are investigated widely. The internal dynamics of the proposed closed-loop control systems are also investiged. A practical implementation of the system on a hardware setup is performed using a low cost Discovery real time digital control platform. The experimental and simulation results demonstrate the validity of the proposed control schemes over a stand-alone real photovoltaic system.

Design and analysis of discrete PID controller for Luo converter

A thorough and effective analysis of the positive output super lift Luo converter along with the discrete PID controller has been carried out. The converter is designed to operate under continuous conduction mode and modelled using state space averaging method. The closed loop control is based on time domain approach and current mode discrete PID controller thus, designed tunes the system in such a way that the converter specifications are satisfied. The Luo converter along with the controller thus designed is robust, shows stiff output voltage regulation without any overshoots or undershoots and highly efficient. The steady state error is almost zero. Extensive simulation is carried out and the results are illustrated. The controller platform is verified using LabVIEW.

Experimental Verification of Critical Inductance Analysis for LUO Family Converters

Our work provides an experimental investigation over critical inductance analysis (CIA) for fundamental Luo family converters (LFCs).It mainly concentrates on negative output superlift Luo converter (NOSLLC), positive output superlift Luo converter (POSLLC) and negative output boost converter (NOBC) which is carried out with proportional integral controller (PIC) so as to get a control over the LFC’s output voltage. Experimental investigation is performed by selecting the critical inductance of LFCs based on average inductor current as well as inductor current repletion, and then the state-space equations of LFCs are attained using the Ziegler–Nicholas tuning method. The experimental analysis provides the researchers a detailed ride over critical inductance for LFCs converters to obtain a better voltage transfer ratio, efficiency and minimised capacitor voltage as well as inductance current ripples as compared with the traditional DC–DC converters. Therefore the performance of the LFCs using PIC is verified at different states by developing both the MATLAB/Simulink and the prototype models. The results of experimental and implementations are provided to represent the importance of the CIA of LFCs with PIC.

Solar PV Fed Irrigation Pump

Agricultural growth has been severely affected due to the constraints in irrigation-energy deficits. Due to the availability of abundant solar energy especially in India for all days, solar powered irrigation technology has been a promising alternative source compared to canonical electricity and diesel focused pumping systems. How to furnish an electric power suitable to drive an irrigation pump for agricultural purposes in isolated areas using solar PV panels is the problem. This project deals with solving a local irrigation problem in countries. In this proposed project a simple design of simulation and analysis of a PMSM fed by a solar PV, modelled through DC/DC converter controlled by a MPPT and for utilizing the power from Solar. Compared to all converters, luo converters is the advanced technology. POSL luo converter are of new DC-DC step-up converter. This POSL luo converter performs positive to positive DC-DC voltage increasing conversion. The hardware implementation has been done for positive output super-lift luo converter respectively.

Additional Series Positive Output Superlift LUO Converter using Particle Swarm Optimization

Due to the advancement in the semiconductor technology DC-DC converters are gaining the importance in several industrial applications. They form the core of the switched mode power supplies used in real time applications. But the conventional DC -DC converter contains the voltage ripples due to the effect of the parasitic elements which is undesirable. The derived topologies of DC –DC converters from the conventional pumps eradicates this effect. In this paper the superlift LUO DC-DC converter will be presented which can replace the conventional converters. The effect of the parasitic elements is eradicated in superlift converter and range of the boosting the voltage level is high which will reduce the charging time and can be applicable for charging of o electric vehicles. The optimized proportional and integral controller using particle swarm optimization is applied to the presented converters.

PSO-PID Maximum Power Point Tracking Controller using Modified Superlift Luo Converter

With the focus on green energy in today's world, Photovoltaic (PV) system has emerged as an excellent renewable source of power for wide range of applications. The main objective of PV system lies in the extraction of maximum power to meet the load demands. This is achieved by making the PV cell operate at an optimum point. This point is mentioned as maximum power point (MPP).This paper portrays the PSO-PID (particle swarm optimization-proportional-integral-derivative) control employed for maximum power point tracking (MPPT) algorithm for PV systems. In addition, it also implements a novel high gain, low ripple DC-DC converter named Modified Negative Output Superlift Luo converter (MNOSLC) whose duty ratio is adjusted by the PSO-PID controller to extract the maximum power. The PSO-PID performance is compared with the conventional Perturb and Observe (P&O) MPPT (Maximum Power Point Track) controller for varying irradiation levels. The simulations are carried out using MATLAB and the results reveal that the efficiency of trapping maximum power is high in PSO-PID compared to P&O for the conditions of varying insolation.It is also verified and validated with the theoretical calculations. A prototype of MNOSLC is developed and shown with a geometric progression rise in its voltage.