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href="/Article/ArticleList14/" target="_blank">技术参?/a> >> <span>正文</span></div> <!-- main_content begin--> <div id="skg9ithwuns" class="maincontent"> <!-- left begin --> <div id="skg9ithwuns" class="news_left"> <div id="skg9ithwuns" class="brand_news_details"> <h1>学会?6个变频器参数设定方法,可以搞?0%变频调试?/h1><table style="border-bottom:1px dotted #e4e4e4;" align="center"><tr><td><div id="skg9ithwuns" class="news_mes">文章来源:工控自动化联盟 作者:??点击?span id="HitNum"></span>?时间?span id="dTime">2019/5/22 16:39:02</span><input type="hidden" id="ID" value="100897523"/><input type="hidden" id="TypeID" value="2"/></div> </td> <td><div id="ckepop"></div></td></tr></table><div id="Content" style="display:none;">[学会?6个变频器参数设定方法,可以搞?0%变频调试了]:1.控制方式:即速度控制、转距控制?PID 控制或其他方式。采取控制方式后,一般要根据控制精度进行静态或动态辨识?.最低运行频率:即电机运行的最小转速,电机在低转速下运行时,其散热性能很差,电机长...</div><div id="skg9ithwuns" class="brand_news_con"><p style="text-align:center;text-indent:2em;"> <img src="http://oss.cnelc.com/kindeditor/img/20190522/20190522163730_0472.png" alt="" /> </p> <p style="text-indent:2em;"> 北京快乐8官网 1.控制方式?</p> <p style="text-indent:2em;"> 北京快乐8官网 即速度控制、转距控制?PID 控制或其他方式。采取控制方式后,一般要根据控制精度进行静态或动态辨识?</p> <p style="text-indent:2em;"> 北京快乐8官网 2.最低运行频率: </p> <p style="text-indent:2em;"> 北京快乐8官网 即电机运行的最小转速,电机在低转速下运行时,其散热性能很差,电机长时间运行在低转速下,会导致电机烧毁。而且低速时,其电缆中的电流也会增大,也会导致电缆发热?</p> <p style="text-indent:2em;"> 北京快乐8官网 3.最高运行频率: </p> <p style="text-indent:2em;"> 一般的变频器最大频率到 60Hz ,有的甚至到 400 Hz ,高频率将使电机高速运转,这对普通电机来说,其轴承不能长时间的超额定转速运行,电机的转子是否能承受这样的离心力?</p> <p style="text-indent:2em;"> 4.载波频率?</p> <p style="text-indent:2em;"> 载波频率设置的越高其高次谐波分量越大,这和电缆的长度,电机发热,电缆发热变频器发热等因素是密切相关的?</p> <p style="text-indent:2em;"> 5.电机参数?</p> <p style="text-indent:2em;"> 变频器在参数中设定电机的功率、电流、电压、转速、最大频率,这些参数可以从电机铭牌中直接得到?</p> <p style="text-indent:2em;"> 6.跳频?</p> <p style="text-indent:2em;"> 北京快乐8官网 在某个频率点上,有可能会发生共振现象,特别在整个装置比较高时;在控制压缩机时,要避免压缩机的喘振点?</p> <p style="text-indent:2em;"> 7.加减速时?</p> <p style="text-indent:2em;"> 北京快乐8官网 加速时间就是输出频率从 0 上升到最大频率所需时间,减速时间是指从最大频率下降到 0 所需时间。通常用频率设定信号上升、下降来确定加减速时间。在电动机加速时须限制频率设定的上升率以防止过电流,减速时则限制下降率以防止过电压?</p> <p style="text-indent:2em;"> 加速时间设定要求:将加速电流限制在变频器过电流容量以下,不使过流失速而引起变频器跳闸;减速时间设定要点是:防止平滑电路电压过大,不使再生过压失速而使变频器跳闸。加减速时间可根据负载计算出来,但在调试中常采取按负载和经验先设定较长加减速时间,通过起、停电动机观察有无过电流、过电压报警;然后将加减速设定时间逐渐缩短,以运转中不发生报警为原则,重复操作几次,便可确定出最佳加减速时间?</p> <p style="text-indent:2em;"> 北京快乐8官网 8.转矩提升 </p> <p style="text-indent:2em;"> 北京快乐8官网 又叫转矩补偿,是为补偿因电动机定子绕组电阻所引起的低速时转矩降低,而把低频率范?f/V 增大的方法。设定为自动时,可使加速时的电压自动提升以补偿起动转矩,使电动机加速顺利进行。如采用手动补偿时,根据负载特性,尤其是负载的起动特性,通过试验可选出较佳曲线。对于变转矩负载,如选择不当会出现低速时的输出电压过高,而浪费电能的现象,甚至还会出现电动机带负载起动时电流大,而转速上不去的现象?</p> <p style="text-indent:2em;"> 9.电子热过载保?span id="sTxtPage" style="font-family:"background-color:#FFFFFF;color:#FF0000;"></div><div id="skg9ithwuns" class="meneame"><span class="disabled">< </span><span class="current">1</span> <a href="AD100897523_2.html">2</a></div> <div id="skg9ithwuns" style="text-align: center;padding-top: 10px;"><img src="/images/code.jpg" alt="关注有惊?" /></div> <div id="skg9ithwuns" 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