{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:15:34Z","timestamp":1792790134358,"version":"4.5.0"},"reference-count":31,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Gazi University Scienti\ufb01c Research Project Coordination Unit","award":["FKB-2024-9429"],"award-info":[{"award-number":["FKB-2024-9429"]}],"id":[{"id":"https:\/\/ror.org\/054xkpr46","id-type":"ROR","asserted-by":"crossref"}]},{"award":["FKB-2024-9429"],"award-info":[{"award-number":["FKB-2024-9429"]}],"id":[{"id":"https:\/\/ror.org\/054xkpr46","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>There is a growing need for high-efficiency power electronic converters that can effectively convert energy, regulate voltages, and enhance power quality in standalone power generators, as the use of renewable energy sources and battery energy storage devices increases. The quasi-impedance-source inverter (qZSI) has attracted significant interest due to its single-stage buck-boost operation, continuous input current, reduced reliance on passive elements, and increased reliability. In this paper, the control strategy and implementation of the qZSI with battery assistance for standalone photovoltaic energy generation are discussed. To analyze the operational characteristics and design the control strategy of the qZSI, the system equations are linearized around the nominal operating point to develop a small-signal model, from which the direct current (DC) side and alternative current (AC) side transfer functions are derived and used as the basis for controller design. Using the proposed model, hybrid controllers are designed to control the shoot-through duty cycle, maintain DC link voltage stability, and battery charging to achieve stable power generation. Furthermore, the SPWM technique is applied to produce AC power with minimal harmonic content and higher efficiency. Application results show stable dynamic behavior, effective battery energy management, improved voltage regulation, and reduced harmonic distortion in the output waveform. The main contribution is a low-complexity coordinated PI and PR control framework for standalone battery-assisted qZSI operation, experimentally validated under DC- and AC-side disturbances without requiring an additional battery-side power-conversion stage.<\/jats:p>","DOI":"10.3390\/s26185758","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T14:11:22Z","timestamp":1789049482000},"page":"5758","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Control System Design and Implementation of Battery-Assisted Quasi-Impedance-Source Inverter for Standalone Power Generation"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4244-9573","authenticated-orcid":false,"given":"Seyfettin","family":"Vadi","sequence":"first","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Faculty of Technology, Gazi University, 06560 Ankara, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1091-1647","authenticated-orcid":false,"given":"Meral","family":"\u00d6zarslan Yatak","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Faculty of Technology, Gazi University, 06560 Ankara, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"117880","DOI":"10.1016\/j.est.2025.117880","article-title":"Advanced energy management for a Quasi-Z-Source Inverter-based photovoltaic power plant with battery storage using a hybrid LEO-QCGNN approach","volume":"132","author":"Radhika","year":"2025","journal-title":"J. Energy Storage"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Ismeil, M.A., Ali, A., Shaaban, M.F., and Alfouly, A. (March, January 29). Single-Phase Semi-Z-Source Inverter for PV Applications. Proceedings of the 2024 6th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE), Moscow, Russia.","DOI":"10.1109\/REEPE60449.2024.10479922"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"121390","DOI":"10.1016\/j.apenergy.2023.121390","article-title":"Model predictive control of a microgrid with energy-stored quasi-Z-source cascaded H-bridge multilevel inverter and PV systems","volume":"346","author":"Quintero","year":"2023","journal-title":"Appl. Energy"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1488","DOI":"10.3390\/en16031488","article-title":"Hybrid Wind-Solar Power System with a Battery-Assisted Quasi-Z-Source Inverter: Optimal Power Generation by Deploying Minimum Sensors","volume":"16","author":"Bubalo","year":"2023","journal-title":"Energies"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"202534","DOI":"10.18618\/REP.e202534","article-title":"Power-Based Control with Feed-forward Disturbance Rejection for Battery-Assisted Quasi-Impedance Source Converter in Photovoltaic Systems","volume":"30","author":"Neves","year":"2025","journal-title":"Eletr\u00f4nica Pot\u00eancia"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2577","DOI":"10.1049\/pel2.12584","article-title":"Quasi-z based adaptive sliding mode control for three-phase photovoltaic grid-connected system","volume":"16","author":"Chen","year":"2023","journal-title":"IET Power Electron."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"6445","DOI":"10.1109\/TIA.2023.3275557","article-title":"A grid-connected pv system based on quasi-z-source inverter with maximum power extraction","volume":"59","author":"Elmorshedy","year":"2023","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"793","DOI":"10.1007\/s43236-024-00943-w","article-title":"Energy storage quasi-Z source photovoltaic grid-connected virtual impedance VSG control strategy considering secondary frequency regulation","volume":"25","author":"Chen","year":"2025","journal-title":"J. Power Electron."},{"key":"ref_9","unstructured":"Biswanath, H., and Das, R. (2025). Review on topologies of quasi Z-source inverter in grid-connected solar photovoltaic system. Environ. Dev. Sustain., 1\u201318."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1043","DOI":"10.1109\/TII.2016.2544246","article-title":"Current Ripple Damping Control to Minimize Impedance Network for Single-Phase Quasi-Z Source Inverter System","volume":"12","author":"Ge","year":"2016","journal-title":"IEEE Trans. Ind. Inform."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"9283","DOI":"10.1109\/TTE.2025.3563222","article-title":"Modified Quasi-Z-Source Resonant Converter\u2013Based Concurrent CC-CV Charging in a Dual-Port Charger for EV Applications","volume":"11","author":"Hunachal","year":"2025","journal-title":"IEEE Trans. Transp. Electrif."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"206","DOI":"10.54287\/gujsa.1303347","article-title":"A Control Scheme for a Quasi-Z Source Three-Phase Inverter","volume":"10","author":"Ortatepe","year":"2023","journal-title":"Gazi Univ. J. Sci. Part A Eng. Innov."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"4903","DOI":"10.1109\/TIE.2020.2988217","article-title":"Family of the CoupledInductor Multiplier Voltage Rectifier Quasi-Z-Source Inverters","volume":"68","author":"Ding","year":"2021","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"109938","DOI":"10.1016\/j.epsr.2023.109938","article-title":"Fault-tolerant control for a microgrid with PV systems and energy storage systems integrated into quasi-Z-source cascaded H-bridge multilevel inverter","volume":"226","author":"Quintero","year":"2024","journal-title":"Electr. Power Syst. Res."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"115002","DOI":"10.1016\/j.rser.2024.115002","article-title":"Hybrid control for capacitor-assisted Z-source inverter in grid-connected photovoltaic system","volume":"208","author":"Radhika","year":"2025","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"120717","DOI":"10.1109\/ACCESS.2025.3569076","article-title":"Switched-Inductor Extended-Boost Quasi-Z-Source Inverter","volume":"13","author":"Paikray","year":"2025","journal-title":"IEEE Access"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"930","DOI":"10.1109\/JESTIE.2023.3305940","article-title":"Control, Operating Limitations, and Stability Analysis for Single-Phase Quasi-Z Source Inverters with Reduced Capacitance","volume":"5","author":"Li","year":"2024","journal-title":"IEEE J. Emerg. Sel. Top. Ind. Electron."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"2991","DOI":"10.1109\/TIA.2023.3344088","article-title":"An Improved Amplitude-Domain PWM Technique with Minimum Inductor Current Ripple for Three-Phase Quasi-Z Source Inverter","volume":"60","author":"Liang","year":"2024","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"9672","DOI":"10.1109\/TPEL.2025.3539316","article-title":"A Novel Model Predictive Control for Quasi Z-Source Inverter to Eliminate Negative Influence of Inductor Current Ripple on Output Current","volume":"40","author":"Qiao","year":"2025","journal-title":"IEEE Trans. Power Electron."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"9481","DOI":"10.1109\/TPEL.2024.3402056","article-title":"High Precision Model Predictive Power Control Method for Battery Energy-Stored Quasi Z-Source Inverter","volume":"39","author":"Liu","year":"2024","journal-title":"IEEE Trans. Power Electron."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Eddine, M.H., Talbi, B., Messaoudene, I., Mehiris, M.A., Krama, A., and Kihal, A. (2025, January 10\u201311). Three-Phase LCL-filtered Quasi-Z Source Inverter with MIMO Sliding Mode Controller. Proceedings of the 2025 2nd International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE), M\u2019sila, Algeria.","DOI":"10.1109\/ICATEEE68170.2025.11406673"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"18560","DOI":"10.1109\/TVT.2024.3451021","article-title":"A Soft-Switched Three-Phase Inductor Coupling Quasi-Z-Source Integrated Charger with Reduced Output Current Ripple for Electric Vehicles","volume":"73","author":"Na","year":"2024","journal-title":"IEEE Trans. Veh. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"2396","DOI":"10.1109\/TCYB.2020.3005283","article-title":"Resilient Distributed Fuzzy Load Frequency Regulation for Power Systems Under Cross-Layer Random Denial-of-Service Attacks","volume":"52","author":"Hu","year":"2022","journal-title":"IEEE Trans. Cybern."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"112813","DOI":"10.1016\/j.automatica.2025.112813","article-title":"Adaptive event-triggered tracking control via switching functions","volume":"185","author":"Hu","year":"2026","journal-title":"Automatica"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1016\/j.fss.2021.10.004","article-title":"Event-triggered fuzzy adaptive control of nonlinear switched systems with predefined accuracy and mismatched switching","volume":"443","author":"Zeng","year":"2022","journal-title":"Fuzzy Sets Syst."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"512","DOI":"10.1016\/j.ins.2022.12.100","article-title":"Adaptive event-triggered control for a family of uncertain switched nonlinear systems with full-state constraints","volume":"624","author":"Yan","year":"2023","journal-title":"Inf. Sci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"106876","DOI":"10.1016\/j.jfranklin.2024.106876","article-title":"Adaptive event-triggered tracking control for nonlinear systems with prescribed performance: A time-domain mapping approach","volume":"361","author":"Cheng","year":"2024","journal-title":"J. Frankl. Inst."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1016\/j.ijepes.2012.10.008","article-title":"Analysis and control of quasi-Z source inverter with battery for grid-connected PV system","volume":"46","author":"Sun","year":"2013","journal-title":"Int. J. Electr. Power Energy Syst."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1665","DOI":"10.1049\/iet-pel.2013.0389","article-title":"Modelling and controller design of quasi-Z-source inverter with battery-based photovoltaic power system","volume":"7","author":"Liu","year":"2014","journal-title":"IET Power Electron."},{"key":"ref_30","unstructured":"Neves, M.D.S., and Rolim, L.G.B. (2023, January 26\u201329). A Power-Based Control Approach for a Battery-Assisted Quasi-Impedance-Source Converter Applied in Photovoltaic Systems. Proceedings of the 2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC\/COBEP), Florianopolis, Brazil."},{"key":"ref_31","unstructured":"Dongqi, F., Wang, Y., Hu, S., Liang, Z., and He, X. (2017, January 1\u20135). Modeling and state-space feedback design of the battery current controller for the energy stored quasi-Z-source inverter. Proceedings of the 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/26\/18\/5758\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T04:14:29Z","timestamp":1789532069000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/26\/18\/5758"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,10]]},"references-count":31,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2026,9]]}},"alternative-id":["s26185758"],"URL":"https:\/\/doi.org\/10.3390\/s26185758","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,10]]}}}