摘要
选择三重绝缘线绕制DC/DC逆变桥升压隔离型变压器,原副边间再增加2层聚酰亚胺夹1层NOMAX绝缘纸可实现电源的高隔离。由板级嵌入式控制电路对DC/DC逆变桥和Buck调压电路进行控制,实现输出电压的调压和稳压控制,各级联模块作为从节点通过RS485接口和Mod Bus协议构成主从式现场总线网络,在主嵌入式模块的管理下协调工作。经测试电源可满足绝缘脉冲电应力加速老化试验的要求。
Electrical insulation systems and aging acceleration test of electrical insulation pulse stress need ad-justable DC supply of high cascading isolation degree.Triple insulated wire winding DC /DC booster isolation transformers are selected.High isolation can be realized by adding two layers of polyimide NOMAX insulating paper between the former side edges .The output voltage regulation and control are realized by embedded circuit control for DC /DC and Buck inverter bridge regulating control.Various coupling modules constitute master_slave field bus network as slave node through RS485 interface and ModBus protocol,under the management of the embedded module coordination.It is shown that the power supply can meet the requirement of pulse electri-cal insulation stress acceleration aging test.
出处
《桂林理工大学学报》
CAS
北大核心
2015年第2期391-396,共6页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(51167004)
广西自然科学基金项目(2013GXNSFBA019250
2011GXNSFA018022)
关键词
嵌入式系统
隔离开关电源
现场总线
embedded systems
isolated switching power supply
fieldbus
