YOKOGAWA PW402 S2
YOKOGAWA PW402 S2
YOKOGAWA PW402 S2
*所有备件的质保期均为1年,经过测试认证。
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仲鑫达自动化备件解决方案
降低您的维护成本!
延长控制系统寿命!
以帮助支持现有的控制系统!
提供嵌入式系统备件!
各种大型进口DCS系统备品,备件。
专注于停产的控制系统零部件地位!
我们有我们自己的内部库存和大量的供应商为分销商为您带来的解决方案满足您的需求!
仲鑫达自动化有一个坚定的承诺为您提供高质量,高价值,和服务和各地的客户!
我们有大量库存的,停产的控制系统部件。我们还分发了许多新的硬件和软件产品,广泛的测试和出售的零部件都配备了1年的保修期。
1.发展现状
变频器是利用电力半导体器件的通断作用将工频电源变换为另一频率的电能控制装置。我们现在使用的变频器主要采用交—直—交方式(VVVF变频或矢量控制变频),先把工频交流电源通过整流器转换成直流电源,然后再把直流电源转换成频率、电压均可控制的交流电源以供给电动机。变频器的电路一般由整流、中间直流环节、逆变和控制4个部分组成。整流部分为三相桥式不可控整流器,逆变部分为IGBT三相桥式逆变器,且输出为PWM波形,中间直流环节为滤波、直流储能和缓冲无功功率。
交流电动机变频调速已成为当代电机调速的潮流,它以体积小、重量轻、转矩大、精度高、功能强、可靠性高、操作简便、便于通信等功能优于以往的任何调速方式,如变极调速、调压调速、滑差调速、串级调速、整流子电动机调速、液力偶合调速,乃至直流调速。因而在钢铁、有色、石油、石化、化纤、纺织、机械、电力、电子、建材、煤炭、造纸、注塑、吊车、城市供水、中央空调及污水处理行业得到普遍应用。
运动控制系统的发展变频器是运动控制系统中的功率变换器,运动控制系统是作为机电能量变换器的电气传动技术的发展。当今的运动控制系统是包含多种学科的技术领域,总的发展趋势是:驱动的交流化,功率变换器的高频化,控制的数字化、智能化和网络化。因此,变频器作为系统的重要功率变换部件,提供可控的变压变频的交流电源而得到迅猛发展。
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