导语：带式输送机又称皮带机，是在矿山、建材、冶金等领域应用较为广泛的一种连续运输设备，但传统的驱动装置由液力耦合器进行软启，存在着能耗高、污染环境和多电机功率分配不均等缺点，而通过英威腾GD5000高压变频调速系统在带式运输机上的应用方案，则可以有效分配功率、减少污染和能耗。

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mso-font-kerning:1.0000pt;">带式输送机又称皮带机，是在矿山、建材、冶金等领域应用较为广泛的一种连续运输设备，但传统的驱动装置由液力耦合器进行软启，存在着能耗高、污染环境和多电机功率分配不均等缺点，而通过英威腾GD5000高压变频调速系统在带式运输机上的应用方案，则可以有效分配功率、减少污染和能耗。

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mso-font-kerning:1.0000pt;">英威腾控制方案

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mso-font-kerning:1.0000pt;">在国内某皮带运输工程中，英威腾经过仔细的研究和严谨的设计，提出增加4台GD5000系列变频器进行组网控制解决方案：

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mso-font-kerning:1.0000pt;">机头：3台Goodrive5000系列高压矢量变频器采用主从速度+下垂控制保证3台电机功率均衡速度同步，

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mso-font-kerning:1.0000pt;">机尾：1台Goodrive5000系列高压矢量变频器采用独立速度控制，速度给定由PLC根据主机速度和负载电流实时进行PID调节。

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mso-font-kerning:1.0000pt;">4台Goodrive5000系列变频器均与PLC进行PROFINET通信，PLC只给主变频和尾部变频发送启停和速度信号，其它2台从机通过内部主从通信网络跟踪主机信号运行。

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mso-font-kerning:1.0000pt;">以太网交换机将机头PLC电信号转换成光信号和尾部PLC连接，保证控制信号可靠高效传输。

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mso-font-kerning:1.0000pt;">皮带机机械传动图

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mso-font-kerning:1.0000pt;">控制框图

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mso-font-kerning:1.0000pt;">方案特点

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mso-font-kerning:1.0000pt;">1、平稳的重载起动

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mso-font-kerning:1.0000pt;">GD5000变频器起动、停止时间为0-3600s可调，采用无速度传感器矢量控制方式，低频运转最大可输出1.5倍额定转矩，可实现电机在重载情况下的平稳启动，解决传统方案中因负载太重导致启动失败或者撕裂皮带的情况。

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mso-font-kerning:1.0000pt;">2、主从控制、降低皮带张力，延长系统寿命

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mso-font-kerning:1.0000pt;">多台变频器通过高速通讯进行组网控制，主机采集从机的运行数据进行分析判断，调整从机的运行频率，达到多台变频器输出功率基本相一致，功率误差控制在5%以内，可降低起动张力30%，传送机机械系统的设备损耗也随之降低，尤其托辊及滚筒的寿命成几倍的延长。

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mso-font-kerning:1.0000pt;">3、

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mso-font-kerning:1.0000pt;">自动调速、节电效果明显

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mso-font-kerning:1.0000pt;">采用单独的控制系统对前级运输系统的载荷、本机运输系统的载荷进行分别测量，这样可控制变频器降速或提前升速。对于载荷不均的皮带传送机系统，可大大节约电能。

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mso-font-kerning:1.0000pt;">现场效果

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mso-font-kerning:1.0000pt;">在项目现场，四台电机在加速、恒速和减速时均同步良好，功率分配均衡，运行非常稳定，带料运行时电机运行电流相差在0.5A左右。

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mso-font-kerning:1.0000pt;">皮带机整体设备图

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mso-font-kerning:1.0000pt;">在此设备中主从电机之间既有刚连接又有柔性连接，变频器软件控制适应性得到全面检验。头部变频与尾部变频相距约6公里，控制信号长距离传输可靠性和响应得到验证。

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mso-font-kerning:1.0000pt;">英威腾先进的多台电机主从同步控制技术在皮带机上成功应用，是英威腾在带式输送机应用上的成熟解决方案，体现了优异的产品性能、良好的现场服务能力以及雄厚技术实力。