The application of short videos in agricultural scenarios has become a new form of productive force driving agricultural development,injecting new vitality and opportunities into traditional agriculture.These videos l...The application of short videos in agricultural scenarios has become a new form of productive force driving agricultural development,injecting new vitality and opportunities into traditional agriculture.These videos leverage the unique expressive logic of the platform by adopting a small entry point and prioritizing dissemination rate.They are strategically planned in terms of content,visuals,and interaction to cater to users needs for relaxation,knowledge acquisition,social sharing,agricultural product marketing,and talent display.Through careful design,full creativity,rich emotion,and the creation of distinct character personalities,these videos deliver positive,entertaining,informative,and opinion-driven agricultural content.The production and operation of agricultural short videos can be effectively optimized by analyzing the characteristics of both popular and less popular videos,and utilizing smart tools and trending topics.展开更多
为解决中压配网中三电平中点钳位NPC(neutral point clamped)型有源阻尼器在谐振发生时中点电位无法快速平衡的问题,提出1种基于二次谐波的主动均压方法。三相三线系统中一般通过在调制信号中注入零序分量实现直流均压控制,但由于有源...为解决中压配网中三电平中点钳位NPC(neutral point clamped)型有源阻尼器在谐振发生时中点电位无法快速平衡的问题,提出1种基于二次谐波的主动均压方法。三相三线系统中一般通过在调制信号中注入零序分量实现直流均压控制,但由于有源阻尼器输出有功电流较小,传统方法难以在谐振发生时满足其直流均压需求。为此分析了偏移调整电流的产生机理,利用调制信号绝对值中的二次分量与二次电流的内积构造实现中点电位的平衡。仿真结果验证了所提方法在纯无功环境中的有效性,以及在谐振发生瞬间对直流侧均压控制的快速性。展开更多
文摘The application of short videos in agricultural scenarios has become a new form of productive force driving agricultural development,injecting new vitality and opportunities into traditional agriculture.These videos leverage the unique expressive logic of the platform by adopting a small entry point and prioritizing dissemination rate.They are strategically planned in terms of content,visuals,and interaction to cater to users needs for relaxation,knowledge acquisition,social sharing,agricultural product marketing,and talent display.Through careful design,full creativity,rich emotion,and the creation of distinct character personalities,these videos deliver positive,entertaining,informative,and opinion-driven agricultural content.The production and operation of agricultural short videos can be effectively optimized by analyzing the characteristics of both popular and less popular videos,and utilizing smart tools and trending topics.
文摘为解决中压配网中三电平中点钳位NPC(neutral point clamped)型有源阻尼器在谐振发生时中点电位无法快速平衡的问题,提出1种基于二次谐波的主动均压方法。三相三线系统中一般通过在调制信号中注入零序分量实现直流均压控制,但由于有源阻尼器输出有功电流较小,传统方法难以在谐振发生时满足其直流均压需求。为此分析了偏移调整电流的产生机理,利用调制信号绝对值中的二次分量与二次电流的内积构造实现中点电位的平衡。仿真结果验证了所提方法在纯无功环境中的有效性,以及在谐振发生瞬间对直流侧均压控制的快速性。
