Zeta Converter Research Articles

Designing an optimal PID controller for a PV-connected Zeta converter using genetic algorithm

This paper suggests a way of fixing problems of voltage fluctuations and peak overshoot in a PV-connected Zeta converter system. The Zeta converter in the proposed approach is controlled using proportional integral derivative (PID) while a genetic algorithm (GA) calculates the PID coefficients based on the control mechanism. The performance of the designed system was analyzed in a MATLAB/Simulink environment. The analysis showed that the proposed system reduced the output voltage ripple and peak overshoot during transient conditions by providing feedback to the converter through the PID controller, this is a significant improvement when compared to the results found without a PID controller.

Improved Voltage-Mode Control of a Buck-Boost Converter Based on Zeta Converter

Improved Voltage-Mode Control of a Buck-Boost Converter Based on Zeta Converter

Optimal EV Charging Using ANT Lion Optimized ANN Based MPPT with High Gain Modified Zeta Converter

Optimal EV Charging Using ANT Lion Optimized ANN Based MPPT with High Gain Modified Zeta Converter

A charging equalizer based on Zeta converter for hybrid energy storage system

AbstractThis thesis proposes a charging equalizer for hybrid energy storage systems, incorporating the Zeta converter, voltage multiplier, and multi‐winding transformer. The objective is efficient charging and equalization for battery and supercapacitor strings. The Zeta converter serves to charge the battery string, while the transformer with multi‐winding shares the inductor of Zeta converter as the primary side, facilitating battery string balancing through the utilization of current ripple in the inductor. Additionally, the voltage ripple generated by the Zeta converter is utilized to drive the voltage multiplier, enabling the charging and equalization of the supercapacitor string. The system's operation halts upon reaching the predefined threshold voltage for the supercapacitor strings. The proposed circuit transforms into a Zeta converter by employing a single‐pole double‐throw switch, facilitating the charging of the battery strings. Experimental validation uses four series‐connected supercapacitors and four series‐connected batteries, demonstrating successful equalization and charging for both energy storage components.

High Gain Zeta Converter with ANFIS Based MPPT for Standalone Application with Galvanic Isolation

The installation of Photovoltaic (PV) systems is steadily increasing globally, as they stand as the primary means of accessing the electrical grid. A considerable amount of effort is dedicated to ensuring the optimal functioning of these PV systems. As a result, the goal of this proposed work is to achieve stable DC-link voltage of the ZETA Converter using the ANFIS MPPT strategy. In this proposed approach, a ZETA converter is used, which results in improved voltage gain and reduced ripple content of the output voltage and current. An isolation transformer is integrated into the system to provide galvanic isolation. This transformer enhances safety by isolating the output from the high-frequency converter from the PV system and other components. Galvanic isolation prevents the transmission of electrical faults and protects connected loads. The output from the isolation transformer is supplied to a DC load through a rectifier. The diode bridge rectifier converts the alternating current (AC) output from the transformer into direct current (DC), making it suitable for powering DC loads. To stabilise the converter’s output voltage and mitigate the intermittent nature of PV, an intelligent MPPT is used, which also aids in maintaining DC-link voltage without distortions and ripples from the converter. The entire paper is validated through a MATLAB simulation 2021a.

Experimental validation of quadratic-boost-zeta converter based on coat circuit

<p>This work proposed a high step-up DC-DC converter with a voltage gain of 12 at a duty cycle of 48.25% with a single active switch. The new design combines the quadratic-boost converter and an isolated zeta converter with a single-stage coat circuit by a transformer with a trans ratio of 2.3. This can result in low voltage stress on switch and diodes with low conduction losses without using an additional clamp circuit, which in turn causes an increase in total efficiency. It has continuous and low ripples in the input and output currents. The voltage conversion ratio and the component voltage stresses are calculated in continuous conduction mode (CCM). The prototype was constructed and tested practically while considering an input voltage of 30 V, an input power of 240 W, an output voltage of 360 V, and a switching frequency of 100 kHz to validate the theoretical evaluations. The maximum efficiency at maximum output power is 94.5%.</p>

Integration of electric vehicle with smart grid using bidirectional SEPIC–zeta converter

Integration of electric vehicle with smart grid using bidirectional SEPIC–zeta converter

Grid connected PV based on quasi resonant zeta converter with Harris Hawk optimization algorithm for the implementation of PI controller

Grid connected PV based on quasi resonant zeta converter with Harris Hawk optimization algorithm for the implementation of PI controller

Solar photo voltaic based hybrid CUK, SEPIC, ZETA converters for microgrid applications

The emergence of converters has triggered a paradigm transfer in the field of power electronics. Recently, DC/DC converters have predominantly employed alternative energy sources and become viable technologies for low- and high-power applications. The DC/DC converter is crucial in power conversion within renewable energy systems, such as hydro, solar photovoltaic (PV), fuel cells (FC), and wind. Its primary role is to modify the voltage and current levels to meet the system's requirements. This article comprehensively examines CUK, ZETA, and single-ended primary-inductor converter (SEPIC) in several phases, including enhancing efficiency, achieving cost-effective operation and mitigating switching losses. Furthermore, this study overviews each converter's operational modes and efficiency-output power comparison. This article compares integrating solar PV and FC technologies into various converters.

Comparative Analysis of SAZZ and ZETA Converter and MPPT Techniques in SPV

Recently, power demands have been fulfilled with their requirements and based on system that are utilized under the renewable energy sources to diminish the global warming. As the preliminary substitute that has been considered in solar energy, from the different renewable energy sources. When compared to other sources, solar photovoltaic (SPV) systems convert around 30% to 40% of solar radiation into electrical power. From the available PV panel system to acquire maximal output, from the photovoltaic system that is made with a wider comparative analysis is one of the numerous Renewable energy sources under investigation due to the increasing demand for renewable power for maintaining. In this research they examined the converters of DC–DC and maximum power point tracking (MPPT). In this study that are used in the conversion of ZETA and snubber-assisted zero voltage and zero current converter (SAZZ). It is difficult to choose the correct MPPT and DC–DC converter technologies in order to maximize the performance of the solar-photovoltaic (SPV) system. In the setting of shifting environmental conditions, perturbing and observing (P&O) is contrasted to INC’s common method of P&O.

An Efficient PV - Integrated UPQC System for Power Quality Enhancement Using Improved Chicken Swarm Optimization

In today’s world, the power distribution system's problems with Power Quality (PQ) are not unfamiliar. However, customer awareness of these issues has also risen. Likewise, there are many conventional solutions to improve the power quality. However, these traditional solutions rely on passive elements and frequently fail to respond effectively as the nature of the power system changes. Custom power devices provide adaptable solutions for many issues. Therefore, a Unified Power Quality Conditioner (UPQC) Coupled with a PV system is proposed in this paper to improve the PQ problems, including fluctuations, voltage sag and swell etc. The deployment of an Interleaved Zeta converter aids in maintaining the constant DC link voltage. In order to derive the maximum desirable power from PV system, STATCOM with Adaptive Neuro- Fuzzy Interference System (ANFIS) is used, which is fine-tuned with the help of the Improved Chicken Swarm (ICS) algorithm. In addition, UPQC with series and shunt converter is employed to decrease the current and voltage harmonics, thereby enhancing the power factor. For controlling the working of UPQC, the d-q theory-based Proportional Integral (PI) is proposed. The suggested design of PV-UPQC is evaluated and the simulation results are obtained in the MATLAB platform with a reduced THD of 2.01%.

Estimation of Common Mode noise and Differential Mode noise generated by DC-DC Power Converters

The study contains a review of the body of knowledge regarding differential mode (DM) and common mode (CM)noise and how they affect power converter performance. With an emphasis on practical application, this work seeks to give an estimation of differential mode (DM) and common mode (CM) noise for cutting-edge DC-DC power converters such as Zeta converters, Single Ended Primary Inductance Converters (SEPIC), and Cuk converters. Active noise separators and Differential mode noise separators are used as a measurement technique to quantify DM and CM noise, considering a number of variables including input voltage, output voltage, load current, and switching frequency. By using filtering techniques, DM and CM noise can be reduced. Both CM noise and DM noise are created by the Zeta converter at 114 dBµV and 108 dBµV, respectively. CM noise from the SEPIC converter is 119 dBµV, and DM noise is 114 dBµV. With values of CM noise 98 dBµV and DM noise 106 dBµV, Cuk converter produces less noise when compared to Zeta and SEPIC converter. The results show that power converters can generate DM and CM noise, and that this noise is over the Comité International Special des Perturbations Radioélectriques [CISPR] limit line. The conducted emission range for various electronic devices is provided by this standard. This study provides useful insights for power converter designers and engineers to optimize the performance of their systems in practical applications.

SELECTION OF THE NON-ISOLATED UNIDIRECTIONAL DC-DC CONVERTERS FOR PHOTOVOLTAIC APPLICATIONS

The rising prominence of renewable energy sources and the demand for efficient power distribution has led to the emergence of DC microgrids as a promising solution for localized energy generation and distribution. The effective operation of DC microgrids heavily relies on the performance of their DC-DC converters, which play a crucial role in regulating power flow and voltage. Selecting suitable DC-DC converters is thus essential to ensure optimal performance and stability of photovoltaic systems. This academic article presents a comprehensive comparative analysis of different non-isolated DC-DC converter topologies and their appropriateness for DC microgrid applications. The research delves into various converter types, including buck, boost, buck-boost, SEPIC, and Zeta converters, thoroughly examining their operating principles, control strategies, and advantages within the context of DC microgrids. The focus is on key performance metrics essential for a comprehensive evaluation, including efficiency, voltage regulation, transient response, power density, and cost-effectiveness. Through meticulous comparative analysis, it is established that the SEPIC and Zeta converters stand out as exceptional choices for DC microgrids. Their distinct advantages, such as reduced output ripple, improved efficiency, and wide input voltage range, position them as valuable contenders for modern power electronics applications, showcasing their excellence in addressing diverse voltage regulation needs. This academic article contributes valuable insights into the selection and application of DC-DC converters in DC microgrid systems, providing researchers, engineers, and industry stakeholders with a comprehensive understanding of the comparative advantages of these converters. The findings underscore the significance of choosing appropriate converters to achieve efficient energy conversion, optimal power distribution, and the advancement of renewable energy technologies in the context of DC microgrids. Keywords: DC-DC converters, SEPIC, ZETA, BUCK, BOOST.

BLDC Motor Driven Solar PV Array Fed Water Pumping System Employing Zeta Converter

Abstract—This paper proposes a simple, cost effective and efficient brushless DC (BLDC) motor drive for solar photovoltaic (SPV) array fed water pumping system. A zeta converter is utilized in order to extract the maximum available power from the SPV array. The proposed control algorithm eliminates phase current sensors and adapts a fundamental frequency switching of the voltage source inverter (VSI), thus avoiding the power losses INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT (IJSREM) VOLUME: 07 ISSUE: 09 | SEPTEMBER - 2023 SJIF RATING: 8.176 ISSN: 2582-3930 © 2023, IJSREM | www.ijsrem.com DOI: 10.55041/IJSREM25857 | Page 2 due to high frequency switching. No additional control or circuitry is used for speed control of the BLDC motor. The speed is controlled through a variable DC link voltage of VSI. An appropriate control of zeta converter through the incremental conductance maximum power point tracking (INC-MPPT) algorithm offers soft starting of the BLDC motor. The proposed water pumping system is designed and modeled such that the performance is not affected under dynamic conditions. The suitability of proposed system at practical operating conditions is demonstrated through simulation results using MATLAB/ Simulink followed by an experimental validation.

Enhanced Power Factor Correction and Torque Ripple Mitigation for DC–DC Converter Based BLDC Drive

A novel approach to the design of power factor correction (PFC) and torque ripple minimization in a brushless direct current (BLDC) motor drive with a new pulse width modulation (PWM) technique is demonstrated. The drive was designed to have a better power factor (PF) and less torque ripple. On the other hand, the modified Zeta converter is used to enhance the power factor of the proposed system. The modified Zeta converter is operated in discontinuous inductor current mode (DICM) by using a voltage follower technique, which only needs a voltage sensor for power factor correction (PFC) operation and DC-link voltage control. The output voltage of the VSI is determined by switching patterns generated by the PWM-ON-PWM switching strategy, and it reduces the torque ripples. The proposed drive is developed and simulated in a MATLAB/Simulink environment. The power factor of 0.9999 is produced by the PFC modified zeta converter topology and the PWM-ON-PWM scheme reduce the torque ripple in the commutation region by 34.2% as compared with the PWM-ON scheme. This demonstrates the effectiveness of the suggested control method.

Dual Stage Speed Control of BLDC Motor Using Hybrid QPSO-CSO Technique

Systems for driving motors are frequently employed with renewable energy sources. By using cutting-edge methods and algorithms, the power converter controlling technology boosts performance. The switching state of the converter from the solar module’s generation unit is where the QPSO (Quantum Particle Swarm Optimization) technique is applied in the currently available work. The duty cycle depends on the swarm velocities, which indirectly depends on the QPSO parameters. Hence, the QPSO parameters inertia (W), and learning coefficients C1 and C2, were determined using the Cuckoo search algorithm (CSO). This approach helps to extract the most powerful solar panel output and continuously operate a BLDC motor performance increasing the power converter controlling technology by utilizing state-of-the-art techniques and algorithms. Every module of the suggested boost converter was examined by the experimental findings. Based on generation and load, a boost converter module is obtained. The Models for single-ended primary inductors (SEPIC) and zeta converters are contrasted with the suggested logic. The overall design model is done by using MATLAB/Simulink 2021a.

Performance Analysis of Solar PV system integrated with SEPIC and ZETA converter

The renewable energy source that is now expanding the fastest is solar energy. It is expanding quickly because of its many applications and affordable upkeep. In order to maintain a consistent output voltage, the DC-DC power electronic converter is integrated with the solar PV system. This study examines SEPIC and ZETA converters in conjunction with a solar PV array. In this study, many characteristics like DC voltage, inductance, capacitance, and voltage are discussed. This research also compares and contrasts the SEPIC and ZETA converters. The MATLAB/Simulink environment is used for all work. When all the parameters are set to certain standard values, waveforms are produced. This demonstrates how changing a few parameters could produce distinct waveforms.

Analysis of the DC/DC Zeta topology converter ripples by applying its limiting continuous mathematical model

Objectives. A DC/DC Zeta topology converter represents a unipolar electronic device for converting an input positive voltage into a stabilized output voltage of the same polarity, which can be set at voltages both below and above the input voltage. The aim of this work is to analyze Zeta converter circuitry, which requires the following tasks to be solved: using Kirchhoff’s Circuit Laws, obtain systems of equations describing converter operation in the phase of energy accumulation and in the phase of energy transfer; using a method proposed by A.I. Korshunov, combine the resulting systems of equations into a marginal continuous mathematical model; using expressions describing constant components of currents and voltages in Zeta converter, analyze their ripples and obtain equations for their calculation; compare the current and voltage values obtained from the continuous limiting mathematical model with the Zeta simulation results.Methods. The tasks are solved using Kirchhoff’s rules and the method for obtaining the limiting continuous mathematical model proposed by A.I. Korshunov. The results are analyzed using a circuit modelling in NI Multisim.Results. It is shown that the phase coordinates of the mathematical model tend to real values of converter currents and voltages at a switching frequency of the power switch of more than 200 kHz. A strong correspondence was established between the calculated ripple values and their values obtained in the simulation (when changing the duty factor).Conclusions. Mathematical models comprise the basis of unified calculation methods for any radio electronic circuit. The developed limiting continuous mathematical model allows a range of changes in current flowing through the choke windings and voltages on capacitor plates to be evaluated, including their maximum and minimum values for various converter parameters, such as power switch switching frequency, duty factor, element ratings, etc. Obtaining this information in turn enables the rational selection of the electronic component base of the converter.

Enhancement of Power-Quality in a BLDC Ceiling-Fan Powered by Unity-Power-Factor Zeta Converter

This paper presents a permanent magnet brushless direct current motor (PMBLDCM) ceiling-fan (CF) that operates on AC mains with a unity power factor (UPF). An AC-DC power-factor-corrected converter (PFCC) performs in discontinuous-conduction mode (DCM) to facilitate various merits such as an inherent UPF, reduced passive components size, stable operation, and required voltage control. The PMBLDCM ceiling fan speed is controlled by a smooth change in converter voltage output, and it helps to operate a voltage source inverter (VSI) at a fundamental frequency with low switching losses. This control maximizes efficiency of a ceiling fan. The THD (Total Harmonics Distortion) of a supply-current is reduced with a wide range of speed control and supply voltage fluctuations. A prototype of it is developed to validate the design and control. Its performance is compared with a conventional PMBLDCM ceiling fan. Test results are shown to verify the design of PFCC. The power quality indices (PQI) at input supply are meeting the IEC61000-3-2 standard.

Enhancing Speed Control of BLDC Motors Using Zeta Converter for Small Electric Vehicles

The movement to reduce emissions can be done by developing renewable energy and electric vehicles derived from renewable fuels. This electric vehicle will use batteries and motors so that BLDC motor was chosen in this study. BLDC motors use electronic commutation so a controller is needed. The controller used is a PI controller assisted by the hysteresis current controller. The output of the hysteresis current controller needs to be converted to a DC voltage using a DC-DC converter. One of the DC-DC converters is a zeta converter which can increase or decrease the voltage so that it can be used when the load voltage varies as will be used in this study. The results showed that the BLDC motor connected to the zeta converter with the controller can be used when the load torque varies. If the applied varying load torque does not exceed the rated torque, the actual speed will return to the reference speed without exceeding a 10% error. On the other hand, the actual speed will return to the reference speed by exceeding the 10% error, if the applied varying load torque exceeds the rated torque.