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The construction industry has been experiencing a rapid increase in complex projects for the last two decades. Simultaneously, project complexity has received more attention from academics and practitioners worldwide. Many studies suggest that perceiving complexity is critical for successful construction project management. This study investigates the current status and future trends in construction project complexity (CPC) literature from the Scopus database. This review systematically uses bibliometric and scientometric methods through co-occurrence and co-citation analysis. First, 644 academic documents were retrieved from the Scopus database. Then, co-occurrence and co-citation analysis were performed along with network visualization to examine research interconnections’ patterns. As a result, relevant keywords, productive authors, and important journals have been highlighted. The prominent research topics within the literature on construction project complexity focus on the following topics: identifying and measuring project complexity, schedule performance and cost estimation, system integration and dynamic capabilities, and risk assessment and uncertainty. Finally, the potential research directions are developing towards safety performance, organizational resilience, and integrated project delivery (IPD). The study still has a limitation. The review focuses only on the academic documents retrieved from the Scopus database, thus restricting the coverage of the reviewed literature relating to construction project complexity. To the best of the author’s knowledge, this study is the first study that provides a systematic review of the literature from the Scopus database on construction project complexity.

This paper aims to provide a comprehensive summary of the current research on the global wind energy systems, in particular to Wind Energy Conversion Systems (WECS) with Doubly Fed Induction Generator (DFIG). The analysis is based on the Scopus database from the year 2001 to 2024 and uses multiple methodologies for analysis. During this period, 3,196 documented research papers related to DFIG-based WECS systems were identified. Only one paper was published in 2002, while 324 papers were published in 2018. Among the 22 countries contributing to this field, China, India, and Morocco led with 340, 317, and 131 articles, respectively. However, India demonstrated the best quality of research, with only 9% of its 317 papers classified as low quality, while 97.2% of these papers were considered high quality. Team efforts are prevalent, accounting for 79.32% of the work. The most frequently used journals for publication are the Journal of Renewable Energy with 83 articles, IEEE Transactions on Industry Applications with 52 articles, and the International Journal of Electrical Power and Energy Systems with 50 articles. English was the most commonly used language, reported in 97% of the papers. As a result, this research points out new directions and stimulates further investigations into wind energy research analysis.Article HighlightsThe number of publications on DFIG-based wind energy systems is rapidly increasing, indicating a global push for renewables.Leading countries, particularly China and India, are making significant contributions to wind energy research.Growing collaboration among researchers shows the importance of teamwork and international partnerships in advancing the field.