This paper views information systems in the perspective of users and suggests that the utility of information systems should be used as an important index to evaluate information systems.Based on a description of TTF ...This paper views information systems in the perspective of users and suggests that the utility of information systems should be used as an important index to evaluate information systems.Based on a description of TTF theory and TAM model,this paper integrates and extends these two models to analyze the antecedent factors that have effects on the utility of information systems.展开更多
基于YNvd平衡变压器和综合潮流控制器(integrated power flow controller,IPFC)相结合构成的同相供电系统,在机车运行状态改变时进行了仿真分析。当同相供电系统采用传统型电流检测方法,在机车由牵引状态转变为电气制动状态时,由于传统...基于YNvd平衡变压器和综合潮流控制器(integrated power flow controller,IPFC)相结合构成的同相供电系统,在机车运行状态改变时进行了仿真分析。当同相供电系统采用传统型电流检测方法,在机车由牵引状态转变为电气制动状态时,由于传统型电流检测方法的缺陷性,IPFC直流侧电容电压会急剧上升。而基于Fryze功率定义的改进型电流检测方法则可以避免该问题,另外改进型电流检测方法可应用于部分补偿模式。仿真结果证明了改进型电流检测方法的可行性。展开更多
文摘This paper views information systems in the perspective of users and suggests that the utility of information systems should be used as an important index to evaluate information systems.Based on a description of TTF theory and TAM model,this paper integrates and extends these two models to analyze the antecedent factors that have effects on the utility of information systems.
文摘基于YNvd平衡变压器和综合潮流控制器(integrated power flow controller,IPFC)相结合构成的同相供电系统,在机车运行状态改变时进行了仿真分析。当同相供电系统采用传统型电流检测方法,在机车由牵引状态转变为电气制动状态时,由于传统型电流检测方法的缺陷性,IPFC直流侧电容电压会急剧上升。而基于Fryze功率定义的改进型电流检测方法则可以避免该问题,另外改进型电流检测方法可应用于部分补偿模式。仿真结果证明了改进型电流检测方法的可行性。
