针对电气类专业课程体系与教学模式中存在的课程门类繁多、理论教学与实践教学衔接性较差、教学方法过于流于形式等问题,提出了一种基于OBE(Outcomes-based Education,OBE)的电气类专业课程体系的重构方法,引入案例分析思想,创新教学内容,并构建"三结合"教学模式,旨在重构电气类专业课程体系,探索新的教学模式与方法,为电气类专业课程教学改革提供一种新思路.

入渗入流问题是城市污水管道普遍存在的问题,是城市污水管道和合流制管道雨天产生过载甚至溢流的主要原因之一.准确地计算入渗入流,并对其进行分析是诊断污水管网溢流,制定管网修复方案的基础.论文对入渗入流的分析方法进行了探讨,采用在线监测数据结合综合单位线法,对某小区的管网入渗入流进行了定量分析.结果表明,该区域入渗入流量较大,管道以入渗为主,时间持续约为18 h.该方法可有效模拟区域内的入渗入流问题,并对入流量和入渗量进行定量分析,计算结果为制定该区域管网排查和修复措施提供了决策依据.该研究为今后类似的工程提供了参考和借鉴.

针对电气类专业课程传统教学模式存在的理论教学与实践教学衔接性差、学生学习效率低等问题,提出一种基于"理论教学—案例分析—实践教学"的全新教学模式.在理论教学和实践教学之间加入案例分析环节,发挥案例分析的桥梁与缓冲作用,使得学生通过案例分析充分理解理论知识,并为后续实践教学做好铺垫.列举的单相交流调压电路和直流升降压斩波电路实例充分验证了该教学模式的有效性.

In view of the influence of periodic intermittent pulse load on the cycle life of the battery,and to optimize the working conditions of battery,we introduce a solution of battery-ultracapacitor hybrid energy storage system(HESS),it can make full use of high energy density of battery and high power density of ultracapacitor.Select the passive structure of HESS which battery connects with ultracapacitor directly as the object of study,at the same time,improve the passive structure of HESS.Under the MALT-AB simulation environment,the single battery,the passive structure of HESS,and the improved passive structure of HESS are chosen to simulation comparative study.Meanwhile,the experiment platform is established for comparative study.Simulation and experiment results indicate that full power compensation from the ultracapacitor on the battery optimizes the discharge process and makes the discharge current become curve more smooth.