MPS-A330P-SJ52DA

更新日期：2019年05月05日
有效期：360天
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价格：￥1251
供货总量：1
规格：MPS-A330P-SJ52DA
所属行业：五金原材料-> 废金属-> 废镍
关键字：MPSA330PSJ52D MPSA330PSJ52D MPSA330PSJ52D

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厦门光沃自动化设备有限公司

联系人：欧工
部门：销售部
职位：销售
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地址：中国福建厦门市厦门市思明区嘉禾路293号宝达大厦1003室

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MPS-A330P-SJ52DA

该系统变压器副边绕组分为8级，相互间移相7.5°，构成48脉冲整流方式。这种多级移相叠加的整流方式，消除了大部分由独立功率模块引起的谐波电流，可以大大改善网侧的电流波形，使变频器网侧电流近似为正弦波，使其负载下的网侧功率因数达到0.96。

《联系人；欧先生》
《座机：0592-5709825》
《传真：0592-5917519》
《24小时热线：18030229053微信同步》
《QQ ：2479261344》
《QQ邮箱：2479261344@qq》

功率模块
移相变压器的每级副边绕组的输出作为每个功率模块的三相输入。功率模块是整台变频器实现变压变频输出的基本单元，整台变频器的变压变频功能是通过单个功率模块实现的，每个功率模块都相当于一台交-直-交电压型单相低压变频器。
功率模块整流侧用二极管三相全桥进行不控全波整流，中间采用电解电容滤波和储能，输出侧为4只IGBT组成的H桥，电路结构如下图所示。

图功率模块内部电路结构

输出侧结构
输出侧由每个单元的U、V输出端子相互串接而成星型接法给电机供电，通过对每个单元的PWM波形进行重组，可得到阶梯正弦PWM波形。这种波形正弦度好，dv/dt小，对电缆和电机的绝缘无损坏，无须输出滤波器，就可以延长输出电缆长度。
控制系统
变频器控制系统接收用户的控制指令，对各功率模块进行触发、封锁、旁路等控制，使变频器提供相应的频率和电压输出。控制系统还对变频器各部件的状态进行监控，提供故障诊断信息，实现故障的报警和保护。
为了实现控制部分和高压部分完全可靠隔离，控制器与功率模块之间采用光纤通讯技术，系统具有极高的安全性，同时具有很好的抗电磁干扰性能。

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