摘要
针对煤矿监控系统升级的需求,设计一种采用XMC4500的低成本局部通风机用双电源双变频调速器设计方案。该变频器控制电路部分采用级联式宽范围开关电源提取直流母线电压中心电平并以此为参考地的电路结构,以降低IGBT驱动隔离器件的耐压要求值,同时对母线电压中心电平进行实时监控,在中心电平发生偏移时进行保护;具有母线电容恒流放电电路,使设备停机时母线电容能量可快速泄放,提高设备的维护便利性。应用表明,该低成本局部通风机双变频器调速系统可满足现场应用需求。
Aiming at the need of upgrading coal mine monitoring system,designed a low-cost mine fan converter using XMC4500.The control circuit of the inverter adopts a cascaded wide-range switching power supply to extract the center level of the DC-bus voltage and use it as reference ground to reduce the withstand voltage requirements of the IGBT drive isolation device.At the same time,the center level of the bus voltage is monitored in real time,and the center level is biased.Time shift protection;with bus capacitor constant current discharge circuit,the bus capacitor energy can be quickly discharged when the equipment is stopped,and the maintenance convenience of the equipment is improved.The application shows that the low-cost mine fan converter can meet the needs of field applications.
作者
吴银成
李一文
黄春
秦玉忠
WU Yincheng;LI Yiwen;HUANG Chun;QIN Yuzhong(Chongqing Research Institute Co.,Ltd.,of China Coal Technology and Engineering Group,Chongqing 400039,China;State Key Laboratory of Gas Disaster Monitoring and Emergency Technology,Chongqing 400039,China)
出处
《自动化与仪器仪表》
2022年第3期119-122,共4页
Automation & Instrumentation
基金
天地科技创新基金面上项目(2018-TD-MS074)
中煤科工集团重庆研究院有限公司科技创新项目(2015YBXM10,2021YBXM07)。
关键词
监控系统升级
宽范围输入
变频
逆变
恒流
monitoring system upgrade
wide range input
frequency conversion
inverter
constant current
