Stand-alone hydropower plant is a major energy source in grid isolated zone because they do not require dams to be built. In stand-alone Voltage and frequency, instability caused by the load variation. This can cause alternator spin very quickly or slowly, causing induced voltage output frequency rise fall. Furthermore, if rate of growth too high low, appliances connected generator undergo huge...

This paper proposes a stand-alone photovoltaic (PV) system based on a DC-DC positive output super lift Luo (POSLL) converter. A conventional sliding mode control, a sliding mode controller using a simple sign function and a linear controller using proportional integrator (PI) are used for the control of the PV panel voltage and POSLL converter inductor current and these methods are compared tog...

STUDY DESIGN Retrospective cohort study. OBJECTIVE To compare perioperative characteristics of stand-alone cages and anterior cervical plates used for anterior cervical discectomy and fusion (ACDF). METHODS We reviewed 40 adult patients who received a stand-alone cage for elective ACDF and matched them with 40 patients who received an anterior cervical plate. We statistically compared opera...