基于改进的LDA主题模型算法，以微藻生物燃料、风力发电、太阳能光伏电池以及潮汐能发电四领域常见可再生能源专利为研究对象，分析全球范围内可再生能源的发展态势及特征。研究结果表明：全球可再生能源的发展先后经历了萌芽期、缓慢增长期和高速发展期，现正处于下降阶段，其间太阳能及风能占据主导地位；四领域可再生能源专利均具备战略意义的技术主题且领先国家各不相同；四领域可再生能源均可实现向电能转化且多种能源联合发电越来越受重视；各国与能源基础建设、提高能源转化效率相关主题的可再生能源技术更易获得政府政策支持。基于研究结果，为我国可再生能源发展提出若干对策建议。

Based on the improved LDA thematic model algorithm, this paper studies four common renewable energy patents in the fields of microalgae biofuel, wind power generation, solar photovoltaic cells and tidal power generation. The development trend and characteristics of renewable energy in the world are analyzed. The results show that，the development of global renewable energy has experienced budding period, slow growth period and high-speed development period, and is now in a declining stage, during which solar and wind energy play a leading role; renewable energy patents in all four fields have strategic technical themes and lead countries are different; renewable energy in four fields can be converted to electric energy and more attention has been paid to combined power generation; renewable energy technologies related to energy infrastructure and improving energy conversion efficiency are more easily supported by government policies. Based on the research results, some countermeasures and suggestions are put forward for the development of renewable energy in China.

G306；F062.1；F206；G301

教育部人文社会科学研究青年基金项目“核型结构产业集群多网络建模及应用研究”（14YJC630035）；国家自然科学基金青年科学基金项目“政府项目式驱动创新行为的企业响应机制研究:复杂适应系统视角”（71503011）；广东省科技厅科技计划项目“基于专利语义分析的技术合作伙伴推荐服务平台”（2017A040403027）