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This paper considers the constrained output regulation problem for a class of DC-DC Zeta converter. First, the dynamic circuit description is modeled as LPV system based on Kirchhoff’s current/voltage law and small signal variation method. Second, the reduced-order observer is designed to estimate the unknown states and disturbance. Third, a minmax optimization method is introduced to achieve the predictive regulation of Zeta converter. Finally, the integrated off-line and on-line synthesis procedures are summarized in an algorithm. The effectiveness of proposed results is verified through a simulation example.

For induction, machine-based configuration, the model predictive control scheme, power converter based renewable system is presented in this paper. The PV system is proposed to provide an input source for the model predictive control (MPC) based system. The control method predictive is used based on vector control. According to this, the drive system behaviour of the fault-tolerant capacity is enhanced. The ZETA converter is proposed to improve the system input source, which fed on the PV system. The proposed ZETA converter is used to increase the DC link voltage of the system. The motor’s speed and torque can be controlled by the model predictive control method based on vector control. The results of the proposed system are obtained and verified using the MATLAB/Simulink.

In this paper, the wind energy system (WES) is interfaced with the grid system using a permanent magnet synchronous generator (PMSG) with robust control of terminal sliding mode controller (SMC) is proposed. In this system, voltage source inverter (VSI) with three phases has connected in grid side using less resistive losses of LCL filter but without using grid connection transformer. The ZETA converter is utilized to develop the voltage of DC link wind system connected rectifier. The high voltage gain is achieved by using the PWM switching signals for the converter. The grid side VSI is used to provide the reliable, efficient and supplying secure with the power, and it is controlled using the control strategy of terminal sliding mode controller (TSM). The proposed system results are verified, and the TSM control’s achievement is based on VSI, which is connected in the grid side validated using MATLAB/Simulink.

In this paper, the photo volatic (PV) renewable energy is fed to load demand using Modified ZETA converter with ANFIS logic controller. Nowadays, renewables have become a blooming market. These are the main sources of energy that exist in the natural environment. It is a clean alternative to fossil fuels. Therefore the application of power electronics to the wind power generation region has become critical. Converters and inverters are the primary method used to produce such renewable resources, quickly and effectively implemented. The ANFIS controller for the SEPIC converter that interfaced between inverter and source, keeps constant voltage during variable load situation and depicted in a small steady error and a small overflow. The design and analysis of PV based modified ZETA converter is explained and the results are verified using MATLAB/Simulink.

In renewable energy, the DC-DC converter plays important roles to convert the electric variables, such as voltage and current. Zeta converter is considered to be widely applied in various applications, includes: power factor correction, photovoltaic generation, and so on. However, the characteristics of the open loop response output voltage from the Zeta converter has quite high overshoot and long settling time. In addition, the input voltage and load variations will affect the Zeta converter’s voltage regulation. To encounter these issues, PID controller based on fuzzy logic tuning is implemented to regulate the output voltage of Zeta converter such that the output voltage can follow the desired voltage. According to simulation results the output voltage with fuzzy-PID controlled is able to track the desired reference voltage. Compared to PID controller, the output voltage controlled with fuzzy-PID controller has a smaller voltage deviation and recovery time. At a significant input voltage change the PID controller output response becomes unstable, while the fuzzy-PID controller still produces a good output response.

The usage of multilevel inverter has increased in a drastic manner for the past years. These novel inverters are useful in various mega power applications. As they are having the ability to change the output waveforms, they are having good harmonic distortions and better output results. This work proposes a novel five level asymmetrical inverter which is incorporated with the zeta converter. Comparison is made with the existing multilevel inverter with the proposed system. The simulation results give the proposed system has less THD [1] when compared to the existing multilevel inverters. The main objective is that the number of switches and capacitors are reduced which in turn reduces the loss and the cost. From the output results is has been proved that the proposed topology gives reduced loss and high quality output when compared with the conventional methods.

A Power Factor Correction PFC and sensor less speed control of BLDC Brushless DC motor using zeta converter is presented. Zeta converter is a fourth order DC DC converter made up of two inductors and two capacitors and capable of operating in either step up or stepdown mode. The PFC is achieved by zeta converter. Sensor less speed control of BLDC motor is achieved and the cost and wiring of sensors are reduced. A MATLAB Simulink environment is used to simulate the developed model to achieve a wide range of speed control with high PF Power Factor and improved PQ Power Quality at the supply. Kirti B. Nagne | Dr. Harikumar Naidu "ZETA Converter for Speed Control of Electronically Commutated BLDC Motor" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: https://www.ijtsrd.com/papers/ijtsrd13087.pdf

This paper proposes a method of maximum power point tracking control using Incremental Conductance employed in hybrid photovoltaic-wind turbine for DC micro-grid system. The rapid growth of renewable energy using photovoltaic (PV) and wind turbine due to low operational cost and easy to implementation. Improvement of the efficiency of PV and wind turbine based on incremental conductance is the solution to get maximum power in PV and Wind Turbine. The proposed method uses variable step to achieve maximum power with high speed tracking, high efficiency and low steady state error calculation. The performance of the MPPT technique has been applied in dc-dc boost converter. Moreover, Zeta Converter using Coupled Inductor-Capacitor is added for maintain constant voltage in passive load. This high gain converter can reach 311 Volt DC with 1000 W output power and high efficiency up to 90%. The effectiveness of proposed method is implemented in two hybrid system using PV and wind turbine source.

The potential of Photovoltaic (PV) panels as a main tool of harnessing solar energy is increasing with the advancements in their power conditioning and conversion stages that vary based on applications. This paper focuses on the conversion of a 22kW PV array output from low-voltage to medium-voltage level (400V to 7kV). This high voltage conversion ratio is difficult to achieve using conventional single-stage DC-DC converters. Thus, different alternatives are proposed and compared here, namely, the Parallel-Input Series-Output (PISO) connection of two different stages using both isolated (full-bridge) and non-isolated DC-DC converters. The converters are compared on the basis of efficiency, footprint, components rating and reliability. Thus, the isolated DC-DC converter system efficiency was estimated at 797%, compared to 93 % for the non-isolated system, keeping into account the variations in terms of the filtering capacitor requirements to maintain a constant minimal voltage ripple at the output which is in favor of the non-isolated systems. ? 2017 IEEE. ACKNOWLEDGMENT This publication was made possible by the National Priority Research Program (NPRP) award [NPRP6-244-2-103] from the Qatar National Research Fund (QNRF); a member of the Qatar Foundation. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of QNRF. Scopus

India is a country which is blessed with abundant amount of solar energy. In recent days according to research they have found that the fossil fuel energy is in the verge of extinction hence there is an increase in need of implementation of renewable energy and to a country like India it is advisable to implement solar energy based system but the cost of implementation of these systems are very high hence there is a necessity to extract the maximum efficiency of the panel, we can implement MPPT (Maximum Power Point Tracking) methods for that purpose. These systems can also reduce the transmission cost as they can be installed near the residential area which is an added advantage. A zeta converter which is powered from solar panel with MPPT controller is proposed in this paper. This system consists of solar panel, MPPT controller, zeta converter and load. MATLAB/Simulink is been used to build the model and simulate the system. MPPT of the solar panel is achieved by using P&O and ICT technique and their results are compared.

In this work, the advantage of using Maximum Power Point Tracking (MPPT) algorithm in solar Photovoltaic (PV) system was investigated. By simulation, the performance and efficiency of the system with and without the tracking algorithm was analyzed. By using MATLAB’s SimPower System block set, a model compromised of KC130TM solar panel powering a Zeta converter controlled by MPPT algorithm driving a lead acid battery as a load was designed. The main objective was to track the Maximum Power Point (MPP) of the solar PV module by modulating the zeta converter’s duty cycle, thereby, optimizing the power output of the panel. The Perturb and Observe (P&O) algorithm preformed with higher overall efficiency compared with the system without MPPT. Additionally, the tracking algorithm was able to track the MPP quickly. The analysis of the algorithm led to a greater understanding of where the inefficiencies of this type of system are located, allowing improvement in future work on this field.

High speed can be achieved by choosing compact size of propulsion system in an electric vehicle (EV). The cost of the propulsion system is one of the major design considerations which fall on the type of motor and controller. The choice of pancake shape Axial Flux Permanent Magnet Brushless DC Motor (AFPM BLDC) reduces the size of the propulsion system and improves the on board space of the EV. The intermittent periodic duty class has been considered to choose the power rating of the AFPM. A new type of Zeta converter is proposed here to regulate the input side DC voltage. The dynamic performance of the EV has been compared with and without Zeta converter which will be useful for the researchers in future.

A novel non-isolated bidirectional soft-switching SEPIC/ZETA converter with reduced ripple currents is proposed and characterized in this study. Two auxiliary switches and an inductor are added to the original bidirectional SEPIC/ZETA components to form a new direct power delivery path between input and output. The proposed converter can be operated in the forward SEPIC and reverse ZETA modes with reduced ripple currents and increased voltage gains attributed to the optimized selection of duty ratios. All switches in the proposed converter can be operated at zero-current-switching turn-on and/or turn-off through soft current commutation. Therefore, the switching and conduction losses of the proposed converter are considerably reduced compared with those of conventional bidirectional SEPIC/ZETA converters. The operation principles and characteristics of the proposed converter are analyzed in detail and verified by the simulation and experimental results.

Renewable energy sources are usually connected to the power grid via power converters. Zeta converters are very important for microgrid and smart grid applications. The objective of this paper is to design a Mamdani fuzzy logic controller (FLC) and a hybrid fuzzy logic controller with the bacterial foraging optimization algorithm (FLC/BFO) to improve and regulate the output voltage response against disturbances like the change in the voltage source or the load for the Zeta converter operating in continuous conduction mode (CCM). Analysis and comparison among simulations of the open loop, closed loop fuzzy logic controller, and hybrid FLC/BFO controller results will be performed for different output voltages and for different working conditions such as the change in the voltage source or the load. The results show that there is significant improvement in the results for the proposed FLC/BFO controller. The designs and simulations will be performed under MATLAB/SIMULINK environment. The results will be compared with other results which used the particle swarm optimization (PSO) algorithm.

This paper proposes increasing the efficiency of the autonomous Photovoltaic (PV) system by utilizing zeta converter alongside neutral point clamped multilevel inverters (NPC-MLI) based on innovative PWM scheme. The PV system acts as an input source and the relevant control of zeta converter through maximum power point tracking (MPPT) offers the maximum available power from the PV array connected to DC-link. To obtain a high voltage gain we need to exhaust the dc-link voltage as much as possible and reduce stress on the switches. For this the NPC-MLI algorithm approaches PWM technique to perform capacitive charging in parallel and discharging in series to obtain maximum voltage gain. The proposed scheme is designed and verified via detailed simulations in the MATLAB/Simulink environment.

Kebutuhan konversi tegangan arus searah semakin banyak digunakan dibidang industri dalam skala besar maupun kecil. Salah satu cara untuk mengkonversi tegangan arus searah konstan ke tegangan arus searah yang dapat divariasikan adalah dengan menggunakan DC Chopper. DC chopper terdiri dari beberapa konfigurasi yang sering digunakan yaitu buck, boost, buck – boost, cuk, sepic dan zeta. DC Chopper mempunyai 2 mode operasi kerja, yaitu mode DCM (Discontinuous Conduction Mode) dan mode CCM (Continuous Conduction Mode). Banyak penelitian yang memanfaatkan kinerja DC Chopper sebagai penyedia catu daya tegangan searah. Namun dalam penelitian, karakteristik dan mode kerja konverter tidak diperhatikan dan dibahas, sehingga tidak jelas mode operasi apa yang digunakan dalam konverter. Pada Penelitian ini dibuat DC Chopper tipe zeta. Zeta converter tersebut menggunakan MOSFET sebagai saklar elektronik yang dipicu oleh rangkaian kontrol IC TL494. Respon keluaran zeta converter yang akan dibahas meliput respon arus dan tegangan keluaran serta efisiensi daya pada mode operasi DCM dan CCM. Berdasarkan hasil percobaan, pengujian mode DCM menghasilkan tegangan keluaran maksimal sebesar 96,3 V, dan nilai efisiensi tertinggi yang dihasilkan sebesar 90,368 %. Pengujian mode CCM menghasilkan tegangan keluaran maksimal sebesar 86,5 V, dan nilai efisiensi tertinggi yang dihasilkan sebesar 91,66287 %.

The commutation torque ripple generated in the commutation interval is one of the main drawbacks of Brushless DC (BLDC) motor and restricts its applications. In this paper, in order to reduce the commutation torque ripple, a novel circuit topology including a zero energy thermonuclear assembly (ZETA) converter and a dc-link voltage selection circuit is proposed and investigated. Firstly, the cause of commutation is analyzed. Then the desired DC link voltage is calculated for the novel circuit topology to make the incoming and outgoing phase currents change at the same rate during commutation, and to effectively reduce the commutation torque ripple. Finally, simulation results show that the proposed topology can effectively suppress the commutation torque ripple under both low-speed and high-speed operation.

Bridgeless topologies have been introduced to improve the input power factor and hence reduce THD and ripples in the input current. Bridgeless zeta converter has the advantages of reduced number of semiconductor switch, easy electrical isolation and reduced in-rush current during start-up. Conventional PWM technique is used for the control of switches. But it suffers from the problem of slow dynamic response. With One Cycle Control it is possible to eliminate input perturbations in one switching cycle. In this paper, a comparison has been made between the conventional PWM technique and modified One Cycle Control for bridgeless zeta converter. The model is developed using MATLAB/Simulink and the results have been analyzed.

In this paper, a new soft-switching Zeta converter with an asymmetrical pulsewidth modulation (PWM) control is proposed. The proposed Zeta converter has the features of constant frequency operation, zero voltage switching (ZVS), and low voltage stress on the active switches. Moreover, it can achieve high power density, high efficiency, low switching loss, and low component count, which make converter operation at low to medium power level feasible. Operational principle of the Zeta converter is presented in detail, and a specific example is designed and implemented to verify its feasibility.

This paper presents a high power factor single-stage driver powering a high-power-LED. The driver employs a PFC based on a Zeta converter, using the One-Cycled Control (OCC) technique. A design procedure for Zeta converter is presented, which is based on the flyback converter as proposed by (Lamar, et al. [1]). Through simulation results of Zeta converter working as PFC, classical OCC and exponential ramp OCC approaches are compared and discussed. Showing that the ramp OCC approach results in better performance of the PFC, in relationship to conventional OCC. This paper also presents the stages of operation of the Zeta converter in the continuous conduction mode (CCM).

This paper presents a computational model of the dynamic behavior of the ZETA converter working in discontinuous conduction mode (DCM), as well as a design example of the feedback control of this converter using a PID controller. In turn, the PID controller is tuned by a dedicated block of the MATLAB™ design optimization library, thanks to the computational model of the ZETA converter. In order to validate the new computational model some simulations were performed using the PSIMTM simulation tool and, finally, a prototype was built and tested. The obtained results confirm that the new computational model of the dynamic behavior of the ZETA converter in DCM is an effective tool to represent accurately the converter dynamic behavior and consequently, a helpful means to design feedback controllers.

This paper presents the dynamic modeling of a ZETA converter in discontinuous conduction mode (DCM) applied to low power renewable sources using the generalized switch averaging technique. The whole system consists of a ZETA converter associated with a full bridge inverter operating at low frequency. Thus, the system works as a sinusoidal low power source. The ZETA converter plays the main role in this arrangement, producing a rectified sinusoidal current waveform synchronized with the power grid. Initially it is presented a brief analysis of the system, as well as the characteristics that make possible the dynamic analysis in DCM. The generalized switch averaging technique are discussed, and also the small-signal analysis of the ZETA converter. In order to validate the current study experimental and simulations results are presented.

In this paper, a new half-bridge zeta converter employing a center-tapped rectifier is proposed. The proposed converter provides a bidirectional powering path in the rectifier. As a result, its improved rectifier voltage waveform reduces the output filter size. Also, it has a wide ZVS range due to the characteristic of the conventional single-ended half-bridge zeta converter. The operational principles, the characteristics, and the design considerations of the proposed converter are analyzed. To verify the performance of the proposed converter, experimental results from a 180W prototype are presented.

This paper presents a humane livestock killer which is realized with two zeta converters and two half-bridge inverters. A ripple-free circuit is introduced into each of the zeta converter for achieving output current with ripple-free feature and for generating high pulse voltages to cause the breakdown of livestock skin, hair or hoof in feet, hence speeding up livestock killing. Moreover, by using the interleaved zeta converters with ripple-free circuit, volume and size of output filter can be reduced. On the other hand, two half-bridge inverters are used to chop dc voltage into pulse voltage at low frequency for sustaining the desired killing current during livestock killing interval. Finally, a prototype of the humane livestock killer with maximum skin breakdown voltage of 10KV, killing voltage of 250V, killing current of 2A, and killing time of 6s is designed and implemented for verifying its feasibility.

This paper continues the efforts on behaviorally modeling multiple-module inter-connected power supply systems and presents detailed derivations of the lower-frequency power transfer models for non-isolated Cuk, SEPIC and Zeta power stages, which will make up a complete family of basic converter models together with those in the previously published paper. The models play an important role in the simulation scheme proposed to predict and investigate large-signal subsystem interactions in a distributed power system.

This paper presents the analysis of the ZETA converter operating in discontinuous conduction mode (DCM) for power factor correction. The main attraction of the ZETA converter is that it is a naturally isolated structure, which allows a regulated output voltage with only one power processing stage. The principle of operation, mathematical analysis, design procedure and experimental results obtained from a laboratory prototype are presented. >

This paper presents an analysis of a novel pulse-width-modulated (PWM) voltage step-down/up Zeta converter, featuring zero-current-switching (ZCS) at the active switches. The applications in DC-to-DC and AC-to-DC (rectifier) operation modes are used as examples to illustrate the performance of this new ZCS-PWM Zeta converter. Regarding to the new ZCS-PWM Zeta rectifier proposed, it should be noticed that the average-current mode control is used in order to obtain a structure with high power-factor (HPF) and low total harmonic distortion (THD) at the input current.

A high-performance front-end rectifier system is proposed for telecommunication power supplies. The proposed system consists of a boost converter for power-factor correction (PFC) and a asymmetrical half-bridge zeta converter for DC–DC power conversion. A cost-effective implementation for a continuous-conduction-mode boost converter is proposed for a PFC circuit. With a simple passive approach, the proposed PFC circuit minimises switching losses by reducing the reverse-recovery current. The asymmetrical half-bridge zeta converter operates under zero-voltage switching for the power switches and its output diode commutates with zero-current switching. The proposed front-end rectifier system is analysed and its design considerations are discussed. Experimental results for a 300 W prototype at a constant switching frequency of 100 kHz are presented to verify the analysis and to show the performance of the proposed system.