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Power optimizer
About: Power optimizer is a research topic. Over the lifetime, 10525 publications have been published within this topic receiving 199245 citations.
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TL;DR: In this article, a sensorless maximum power point tracking (MPPT) of a small power wind turbine using a permanent magnet synchronous generator (PMSG) to supply a DC load is presented.
63 citations
TL;DR: In this paper, the power generation forecast method for photovoltaic power systems in an energy network was developed using weather information and regression analysis, and the average prediction error per day was about 26% of the measured power.
Abstract: Recently, there has been an increase in concern about the global environment Interest is growing in developing an energy network by which new energy systems such as photovoltaic and fuel cells generate power locally and electrical power and heat are controlled with a communication network We developed the power generation forecast method for photovoltaic power systems in an energy network The method makes use of weather information and regression analysis We carried out forecasting power output of the photovoltaic power system installed in Expo 2005, Aichi Japan As a result of comparing measurements with prediction values, the average prediction error per day was about 26% of the measured power © 2009 Wiley Periodicals, Inc Electr Eng Jpn, 167(4): 16–23, 2009; Published online in Wiley InterScience (wwwintersciencewileycom) DOI 101002/eej20755
63 citations
TL;DR: An optimized power redistribution method to enhance the frequency performance of onshore ac grids is presented and a combined offshore wind farm control strategy with emulating inertia control and auxiliary pitch angle control is proposed to alleviate the adverse effect of the transferred surplus power on asynchronous grids.
Abstract: The increasing penetration of renewable sources, particularly wind energy, has provided the power system with large-scale clean electricity. For integrating gigawatt offshore wind energy, voltage source converter (VSC) based multiterminal HVDC transmission is the prospective technology with flexible control characteristics. Most of the papers so far have dealt with improving the frequency performance caused by an ac system disturbance, and only a few deals with the influence of dc system converter outage on frequency performance. However, the converter outage will bring successive power impulses to the onshore ac grids. This paper presents an optimized power redistribution method to enhance the frequency performance of onshore ac grids. The two scenarios of power redistribution after converter outage are analyzed: self-distributed type and nonself-distributed type. For the self-distributed scenario, the optimized power redistribution method involves three steps: sensitive cluster identification, optimized power redistribution calculation, and dc grid operating point setting. For the nonself-distributed scenario, a combined offshore wind farm control strategy with emulating inertia control and auxiliary pitch angle control is proposed to alleviate the adverse effect of the transferred surplus power on asynchronous grids. Simulation verifications are carried out in a modified New England 39-bus system with seven terminal VSC-HVDC transmission system.
63 citations
Patent•
15 Jul 2010
TL;DR: In this article, a method and apparatus is disclosed for intelligently inverting DC power from DC sources such as photovoltaic (PV) solar modules to single-phase or three-phase AC power to feed the power grid for electricity generation.
Abstract: A method and apparatus is disclosed for intelligently inverting DC power from DC sources such as photovoltaic (PV) solar modules to single-phase or three-phase AC power to feed the power grid for electricity generation. A number of smart single-input, dual-input, triple-input, quad-input, and multiple-input power inverters in a mixed variety can easily connect to single, dual, triple, quad, and multiple DC power sources, invert the DC power to AC power, and daisy chain together to generate a total power, which is equal to the summation of the AC power supplied by each smart and scalable power inverter of this invention.
63 citations