Simplified model of battery energy-stored quasi-Z-source inverter-based photovoltaic power plant with Twofold energy management system

Oliveira-Assis, Lais de; Soares-Ramos, Emanuel P. P.; Sarrias‐Mena, Raúl; García‐Triviño, Pablo; González-Rivera, Enrique; Sánchez-Sainz, Higinio; Llorens-Iborra, Francisco; Fernández‐Ramírez, Luis M.

doi:10.1016/j.energy.2021.122563

Cited by 23 publications

(9 citation statements)

References 31 publications

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“…The inverter switches may be antiparallel or series of switch and diode. The third possibility is z source connected between two converters, for example between dc-to-dc converter and inverter [11]. The z source concept can be suitable for entire spectrum types of power converter schemes.…”

Section: ░ 2 Literature Surveymentioning

confidence: 99%

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An Efficient Modified Z Source Grid Tied Inverter System

Ramu¹,

Balakrishnan²,

Vengadachalam³

et al. 2022

IJEER

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In this paper presents the controlling the power of using quasi-Z source inverter for renewable source application. The proposed quasi z source is single stage DC to AC converter it delivered buck-boost operation with respect to input. These buck-boost converter is highly suitable compare to the normal dc to dc converter for photovoltaic applications. The proposed single stage converter are reliable and suitable for renewable energy source application. The source impedance quasi network offers high gain compare to the exciting system and reduced the total harmonic level. The quasi-z source followed by single phase H bridge converter uses to convert DC to AC with high reliability output. A proposed system-built Simulink and the hardware made for the open loop control. The conventional voltage and current source inverter have its own limitation of the output voltage low compare to the input source in the voltage source inverter, it is just opposite in the current source inverter. These limitations overcome by designed novel modified z source inverter was developed and controlled pulse using unipolar and bipolar concept. The output of the inverter after filter, it produces the less harmonics result 7.6% on fifth harmonics level compare with conventional inverter.

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Section: ░ 2 Literature Surveymentioning

confidence: 99%

“…The impedance source converter is called Z source converter. It is generally used on various converters such as inverter, rectifier, cyclo converter and chopper power conversion operations [11]- [15]. Z source contains unique impedance circuit it uses to couple the converter between source and converter.…”

mentioning

confidence: 99%

An Efficient Modified Z Source Grid Tied Inverter System

Ramu¹,

Balakrishnan²,

Vengadachalam³

et al. 2022

IJEER

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“…Quazi Z-source inverter (QZSI) shown in Fig. 3, has been presented to solve the problem of DCM and inrush current [5]. The main limitation of the Z-Source inverter is that it has a low boost factor so, many improvements for Z-source have been presented such as switched inductor/capacitor Z-source inverter, and high gain extended Z-source inverter, Although the inverter increased its boosting factor, the number of components used also increased, and the stress on them increased.…”

Section: Introductionmentioning

confidence: 99%

High Robust Control Model of High Step Up Three Phase Y Source Inverters based on Model Predictive Control

Ismeil¹,

Orabi

Abdelaal

2023

SVU-International Journal of Engineering Sciences and Applicati

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Considering the spread spectrum problem of finite-control-set model predictive control (FCS-MPC), a Model predictive control technique for the quasi Y-Source Inverter with RL load to enhance the following effectiveness of the tracking efficiency by using the cost function. The controller achieves optimal voltage vector by minimizing the errors in one cost function, the weighting factor for each absolute error has been used, the system has been tested under dynamic load change, and fast response has been achieved using FCS-MPC for the output load current. Moreover, the controller maintains capacitor voltage to be constant with no minimum value over/under-shoot. The MPC model has been created and then the whole system has been validated under MPC based on MATLAB SIMULINK Software. The results of output currents, capacitors voltages, and inductor current have been presented and detailed discussed The results show how fast the MPC is in tracking the reference signal.

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“…The next converter within the structure of conventional PV systems is DC to AC inverter, which is responsible for conversion of the PV DC output power to AC power, reactive power support of the local loads, 8 and active power filtering. 9 It should be noted that both features of the grid-connected PV systems, MPPT, and DC to AC conversion can be implemented in a DC to AC inverter with the help of DC-DC converter, if boost chopper is removed from the structure of the grid connected PV systems. In this situation, MPPT of the PV will be performed through the DC link control loop, which should be considered in the closed loop controller of the inverter.…”

Section: Introductionmentioning

confidence: 99%

“…Also, maximum power point tracking (MPPT) of the PV sources can be implemented within the closed‐loop controller of boost converter. The next converter within the structure of conventional PV systems is DC to AC inverter, which is responsible for conversion of the PV DC output power to AC power, reactive power support of the local loads, 8 and active power filtering 9 …”

Section: Introductionmentioning

confidence: 99%

A novel MIMO SMC for comprehensive unified control of the cascaded DC‐DC and DC‐AC converters in grid connected photovoltaic systems

Radmand,

Hosseini Firouz,

Salimi

et al. 2023

Circuit Theory & Apps

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SummaryIt is well known that DC‐DC boost converters are cascaded with DC‐AC inverters for grid connection of the photovoltaic (PV) systems. In the traditional control approaches, the mentioned DC‐DC and DC‐AC converters are controlled separately to facilitate the controller design problem. However, from the controller design viewpoint, the overall structure of the grid connected PV generator is a multi‐input multi‐output (MIMO) system. The duty cycle of the DC‐DC converter and inverter modulation index are the control inputs and, on the other hand, generated photovoltaic DC power and exported power to the grid are control outputs. Moreover, the inverter DC link voltage should be stabilized by the closed‐loop controller as well as an internal control output. If controllers are designed separately, it means that the interaction between DC‐DC and DC‐AC controllers isn't considered accurately, and since the isolated models of DC‐DC converter and DC‐AC inverter are extracted based on some approximated assumptions, separate controller design cannot guarantee stability and robustness of the whole system in a wide range of operation. To cope with these problems, in this paper, a novel MIMO sliding mode controller (SMC) is developed for comprehensive closed‐loop control of the DC‐DC boost converter cascaded with a single‐phase DC‐AC grid connected photovoltaic inverter. In the proposed approach, the dynamic model of whole system is developed comprehensively at first, and then, a unique MIMO controller is designed to control both DC‐to‐AC and DC‐to‐DC converters together. To cope with the nonlinear characteristic of the system and uncertainty of model parameters in a wide range, a fixed‐frequency SMC is developed using the comprehensive state space model of the closed loop system. In the proposed MIMO‐SMC controller, the AC power (which is exported to the grid) and operating point of the PV source are controlled via inverter modulation index and duty cycle of the DC‐DC boost converter, respectively. Another major advantage of the proposed system is mitigating the non‐minimum phase characteristic of the boost converter through the indirect control of inverter DC link capacitor. To evaluate the performance of the designed control system, simulation results are compared with a standard linear PI controller. It is shown that the developed system has zero steady‐state error and enjoys faster dynamic response during the start‐up and step changes of AC and DC current references. Moreover, it can maintain the stability of closed‐loop systems in a wide range of operations.

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Simplified model of battery energy-stored quasi-Z-source inverter-based photovoltaic power plant with Twofold energy management system

Cited by 23 publications

References 31 publications

An Efficient Modified Z Source Grid Tied Inverter System

An Efficient Modified Z Source Grid Tied Inverter System

High Robust Control Model of High Step Up Three Phase Y Source Inverters based on Model Predictive Control

A novel MIMO SMC for comprehensive unified control of the cascaded DC‐DC and DC‐AC converters in grid connected photovoltaic systems

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