本文介绍了日本不二越公司生产的HYDIS(Hydraulic-Electronics Digital Interface System)电-液数字转换系统,该系统以高速响应电磁阀作为电-液转换元件。采用本文列举的几种高速响应电磁阀,可以构成各种电-液转换系统,实现建筑机械和...本文介绍了日本不二越公司生产的HYDIS(Hydraulic-Electronics Digital Interface System)电-液数字转换系统,该系统以高速响应电磁阀作为电-液转换元件。采用本文列举的几种高速响应电磁阀,可以构成各种电-液转换系统,实现建筑机械和车辆等的远距离操作和自动化。本文着重介绍了高速响应电磁阀的结构、工作原理、性能、特点等。展开更多
In PV （photovoltaic） power systems, a MPPT （maximum power point tracking） algorithm is vital in increasing their efficiency. But it is also vital to take into account the non ideal conditions resulting from comple...In PV （photovoltaic） power systems, a MPPT （maximum power point tracking） algorithm is vital in increasing their efficiency. But it is also vital to take into account the non ideal conditions resulting from complex physical environments in such PV power systems. To minimize the degradation of performances caused by these conditions, and therefore adding reliability and robustness, this paper presents an implementation of a digitally controlled system using a topology based on series connected DC-DC buck converters for a stand-alone PV power system applications, operating with local and autonomous controls, to track the maximum power points of PV modules in non ideal conditions. Simulations are carried out by using C-MEX S-functions under MATLAB-SIMULINK environment. A PV system of 1.44 kWc is described and simulation results are presented.展开更多
文摘本文介绍了日本不二越公司生产的HYDIS(Hydraulic-Electronics Digital Interface System)电-液数字转换系统,该系统以高速响应电磁阀作为电-液转换元件。采用本文列举的几种高速响应电磁阀,可以构成各种电-液转换系统,实现建筑机械和车辆等的远距离操作和自动化。本文着重介绍了高速响应电磁阀的结构、工作原理、性能、特点等。
文摘In PV （photovoltaic） power systems, a MPPT （maximum power point tracking） algorithm is vital in increasing their efficiency. But it is also vital to take into account the non ideal conditions resulting from complex physical environments in such PV power systems. To minimize the degradation of performances caused by these conditions, and therefore adding reliability and robustness, this paper presents an implementation of a digitally controlled system using a topology based on series connected DC-DC buck converters for a stand-alone PV power system applications, operating with local and autonomous controls, to track the maximum power points of PV modules in non ideal conditions. Simulations are carried out by using C-MEX S-functions under MATLAB-SIMULINK environment. A PV system of 1.44 kWc is described and simulation results are presented.
