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However, there is a double\u2010frequency pulsating power on the DC side of the photovoltaic module. The conventional approach by paralleling large\u2010capacity electrolytic capacitors on the DC side has poor reliability. Therefore, based on the interleaved decoupling method, a new topology of photovoltaic grid\u2010connected inverter and its corresponding control strategy are proposed in this paper. The decoupling capacitor voltage is used as the feedback signal, and the proportional resonant controller is used to realize the precise error\u2010free control of the voltage. In order to improve the tracking accuracy of the system, the inductance current feedback is added as the inner loop control, and the current sharing control is added in the current loop to ensure the balance and stability of each branch current in the parallel circuit. Finally, in order to verify the effectiveness of the proposed circuit and control method, an experimental platform of interleaved power decoupling circuit is built based on PLECS RT\u2010Box, and the experimental analysis is carried out. The experimental results show that the circuit designed in this paper can effectively suppress the double\u2010frequency ripple in the DC\u2010side input current of the grid\u2010connected inverter.<\/jats:p>","DOI":"10.1002\/cta.70028","type":"journal-article","created":{"date-parts":[[2025,7,4]],"date-time":"2025-07-04T01:09:39Z","timestamp":1751591379000},"page":"1584-1603","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Research on Photovoltaic Grid\u2010Connected Inverter Based on Interleaved Parallel Decoupling"],"prefix":"10.1002","volume":"54","author":[{"given":"Yu","family":"Wang","sequence":"first","affiliation":[{"name":"Electric Science Research Institute Guizhou Power Grid Co., Ltd  Guiyang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yumin","family":"He","sequence":"additional","affiliation":[{"name":"Electric Science Research Institute Guizhou Power Grid Co., Ltd  Guiyang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keyue","family":"Qiu","sequence":"additional","affiliation":[{"name":"Electric Science Research Institute Guizhou Power Grid Co., Ltd  Guiyang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JianYang","family":"Zhu","sequence":"additional","affiliation":[{"name":"Electric Science Research Institute Guizhou Power Grid Co., Ltd  Guiyang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huiting","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Electric Power Engineering South China University of Technology  Guangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-8619-7864","authenticated-orcid":false,"given":"Wenkai","family":"Dong","sequence":"additional","affiliation":[{"name":"School of Electric Power Engineering South China University of Technology  Guangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenxun","family":"Xiao","sequence":"additional","affiliation":[{"name":"School of Electric Power Engineering South China University of Technology  Guangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bo","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electric Power Engineering South China University of Technology  Guangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,7,3]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.5547\/01956574.33.3.5"},{"issue":"3","key":"e_1_2_8_3_1","first-page":"41","article-title":"Comparative Analysis of Data on Global Energy Consumption Structure in the Past Ten Years","volume":"27","author":"Ling L.","year":"2020","journal-title":"World Petroleum Industry"},{"issue":"10","key":"e_1_2_8_4_1","first-page":"20","article-title":"World Energy Development Trend and Future Development Direction of China's Energy","volume":"32","author":"Zhang S.","year":"2019","journal-title":"China's Land and Resources Economy"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1109\/MIE.2013.2272239"},{"issue":"24","key":"e_1_2_8_6_1","first-page":"9655","article-title":"Model Predictive Power Decoupling Control for Current Continuous Control Set of Novel Single\u2010Phase Photovoltaic Inverters","volume":"43","author":"Cheng W.","year":"2023","journal-title":"Chinese Journal of Electrical Engineering"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1109\/TPEL.2012.2186640"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1109\/TPEL.2010.2096562"},{"key":"e_1_2_8_9_1","volume-title":"Optimization of Photovoltaic Power Systems","author":"Rekioua D.","year":"2019"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.23919\/CJEE.2018.8606786"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2017.2698376"},{"key":"e_1_2_8_12_1","doi-asserted-by":"crossref","unstructured":"T.ShimizuandS.Suzuki \u201cA Single\u2010Phase Grid\u2010Connected Inverter With Power Decoupling Function \u201d inThe 2010 International Power Electronics Conference\u2014ECCE ASIA \u2010[C] (2010) 2918\u20132923.","DOI":"10.1109\/IPEC.2010.5543511"},{"issue":"17","key":"e_1_2_8_13_1","first-page":"1","article-title":"The Causes, Impacts and Countermeasures of the European Energy Crisis [J]","volume":"47","author":"Yang Z.","year":"2023","journal-title":"Power System Automation"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.enpol.2024.114436"},{"key":"e_1_2_8_15_1","doi-asserted-by":"crossref","unstructured":"Y.Jin T.Shimizu andG.Kimura \u201cDC Ripple Current Reduction on a Single Phase PWM Voltage Source Converter \u201d inIECON'98. 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