矿用隔爆兼本安型混合无触点起动器的设计及应用

针对我国井下频繁起动换向的驱动方式造成矿用磁力起动器接触器触头同步性精度降低及烧毁等故障,设计一种矿用隔爆兼本安型混合无触点起动器,实现频繁换向起动、常规软起动等驱动方式,并且针对频繁换向造成晶闸管发热问题设计了晶闸管组件冷却系统。

油田增产船电力系统配置

通过酸化增产增注措施提高油气田产量,近年来越来越多地应用于海上油气田。文章以一大型多功能油田增产船为例,主要介绍电力系统的配置及其技术特点。

Torque Distribution Strategy for Integrated Starter/ Generator Hybrid Bus Implemented by Fuzzy Algorithm

A torque distribution strategy was designed by using fuzzy logic to realize the optimal control. The vehicle load zones were dynamically divided into several zones by several torque lines to indicate the drivers demand and the high or low efficient operating areas of the diesel engine. The fuzzy logic controller with trapezoid membership function and Mamdani rule reference mechanism was utilized. There are over 100 rules used in this fuzzy-based torque distribution strategy which are sorted into four rule-bases. The fuel economy and acceleration tests were designed to test and validate the integrated starter/generator (ISG) bus perfor-mance using fuzzy-based torque distribution strategy. The fuel economy is improved 7.7% compared with the rule-based strategy. Finally the road test results reveal that there is about 15% improvement of fuel economy. And the 0-50 km/h acceleration time is 9.5% shorter than the original bus.

新能源用控制电器的发展与分析

控制电器长期以来得到了广泛关注与研究,特别是交流接触器。相对于传统的工业控制领域,一些细分市场的新型控制电器也开始井喷式的发展,并呈现出技术特点的差异化,例如风电用大容量接触器与高电压直流继电器等。在分析这两种不同的新型控制电器基础上,对其应用场景、工况条件、结构特征以及技术指标进行归纳,阐述了这些产品的技术及市场现状,并对新型控制电器的发展趋势进行了展望。