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New changes in the solar industry: simulation and power management chip to imp
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Solar PV market up to 30% annual growth rate over the past 10 years has attracted many investors. In fact, the basic technology development of solar PV 50 years ago already available, but technology is not progress. Therefore, solar modules currently on the market and inverter technology in cost-effectiveness and return on the user's requirements has not yet reached. Technological progress is slow also made extensive use of solar technology is not, and rely on government subsidies. However, since the industry to introduce DC / DC power optimizer and DC / AC inverters distributed micro integrated circuit technology, the solar energy industry began a new round of technological change. Shadow and the negative impact of mismatch problems have resulted in several well-known companies and many emerging companies to change the direction of their R & D in favor of the development of new technologies to address these actual operating environment. The problem of solar photovoltaic system is somewhat similar to a string of lights, as long as one of the problems with the module, in series with the other modules would be involved, and any one component can affect the performance of other components. Precise, the solar photovoltaic system between the various parts of the event of voltage and current imbalances, we will have mismatch problems. Many reasons, such as the partial shadows, moving clouds, nearby reflective objects, photovoltaic components and arrangement of different angles, dirt, different degrees of aging, fine cracks and the temperature difference between the PV modules will be made system in the mismatch. All solar systems are more or less mismatch problem, but in many cases caused by mismatch of energy loss will be ignored or underestimated. Many independent studies have shown that only 10% of the PV modules are shadowing the whole system will lose up to 50% of generating capacity. Now widely used in solar systems have sought to use the central inverter special algorithm to solve the mismatch problem. This is called the maximum power point tracking (MPPT) technology, the limitations of the special algorithm is unable to penetrate the inverter "see" each string or each series of PV modules with the situation, it can only be slow and limited adjustment. Until 2008, National Semiconductor has developed power optimization technology, first introduced in the market, such as "power optimizer," the integrated circuit, which is characterized by full use of the core analog circuit technology and power management chips, the minimum the system unit, the level of PV modules to maximize energy output, thereby improving the overall efficiency of solar photovoltaic systems. National Semiconductor and Suntech to establish a cooperative relationship. For the solar system, the introduction of integrated circuits will be added value, because the optimizer to add the main purpose of power is to restore damaged and lost due to a component of the generating capacity and to ensure that regardless of any time during the day in any month or year can maximize the energy efficiency of each photovoltaic module.