[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcNxze7G-Kv3K-yqqDVrHKpt4KUNuTdT6mriLgd5AEzU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2024-04-22 12:21:19",139609920,[8,9,10,11],"有源逆变器","DC\u002FDC变换器","AC\u002FAC变换器","无源逆变器",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},18,"ffa980d6e053f9bcaecde4d1b9de5d43","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8a7fcd4138e2cf41b256885788099664.jpg","电力电子技术","work_34484730","第五次作业(2024)","将直流电能转换为交流电能并馈送给电网的变流器是( )",[21,26,35,44,53,62,67,78,87,93],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],139609921,[30,31,32,33],"90º","150º","180º","360º","在一个可实现有源逆变的相控变流电路中,控制角α+β等于( )",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],139609922,[39,40,41,42],"30º-35º","10º-15º","0º-10º","0º","在一般逆变电路中,最小逆变角βmin选在下面那一种范围合理( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":24,"type":25},[],139609923,[48,49,50,51],"30°","60°","90°","180°","三相全控桥电路接在同一相的两个晶闸管触发脉冲的相位差为( )",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":24,"type":25},[],139609924,[57,58,59,60],"6,120","6,60","3,120","3,60","三相全控桥电路由( )只晶闸管组成,每间隔( )度有一管换流.选( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":24,"type":25},[],139609925,[8,9,10,11],"将直流电能转换为交流电能并直接供给负载的变流器是( )",{"answer":68,"createTime":69,"id":70,"options":71,"question":76,"source":24,"type":77},[],"2024-06-23 18:12:17",154666474,[72,73,74,75],"变流装置的直流侧必须外接有电压极性与晶闸管导通方向一致的直流电源E,且E的数值要大于Ud","变流器必须工作在β< 90°(α> 90°)区间,使 Ud< 0","直流侧串接大电抗","直流侧并续流二极管","产生有源逆变的条件有( ).(多选)",1,{"answer":79,"createTime":69,"id":80,"options":81,"question":86,"source":24,"type":77},[],154666475,[82,83,84,85],"三相半波可控整流电路","单相半控桥整流电路","单相全控桥接续流管电路","三相全控桥整流电路","在下面几种电路中,不能实现有源逆变的电路有哪几种( ).(多选)",{"answer":88,"createTime":69,"id":89,"options":90,"question":91,"source":24,"type":92},[],154666476,[],"为了防止逆变失败,最小逆变角限制为",2,{"answer":94,"createTime":69,"id":95,"options":96,"question":97,"source":24,"type":92},[],154666480,[],"逆变电路中,当交流侧和电网连结时,这种电路称为 逆变电路,当控制角\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F390ccc51f5a045a99510464f0b95f677.webp\">时,电路工作在 状态;\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fecd3348ca00103d326c917252503118d.webp\"> 时,电路工作在 状态"]