| 摘要 |
An energy storage system, more particularly, a grid-connected energy storage system including a renewable energy generation system. The energy storage system includes a compensation unit for storing or outputting electric energy generated from a renewable energy generation system including a plurality of renewable energy generation modules; and a power managing system for converting power generated from the renewable energy generation system into power for driving a load, outputting the load, and operating the compensation unit when a mismatch loss is generated so that entire output power from the renewable energy generation system is smaller than the sum of maximum power of the renewable energy generation modules. In this regard, when a mismatch loss is generated and thus entire output power from a renewable energy generation system is smaller than the sum of maximum power, the mismatch loss of a renewable energy generation system is compensated for such that the generation efficiency of the renewable energy generation system is not reduced, thereby preventing reduction of lifetime of the renewable energy generation system. |
