The efficiency of an inverter refers to the ratio of its output power to input power under specified operating conditions, expressed as a percentage. Generally, the nominal efficiency of a photovoltaic inverter refers to the efficiency under pure resistive load and 80% load. Due to the high overall cost of photovoltaic systems, it is necessary to maximize the efficiency of photovoltaic inverters, reduce system costs, and improve the cost-effectiveness of photovoltaic systems. At present, the nominal efficiency of mainstream inverters is between 80% and 95%, and for low-power inverters, the efficiency is required to be no less than 85%. In the actual design process of photovoltaic systems, not only should high-efficiency inverters be selected, but also reasonable system configuration should be adopted to ensure that the photovoltaic system load operates near the optimal efficiency point as much as possible.
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