CAJ | 학술논문

并网变换器为锂电池储能系统实现并网的核心部件，为实现锂电池储能系统与电网的双向功率交换，提出了锂电池储能并网变换器设计方案。该系统以赛米控智能集成功率模块作为主要功率器件，通过电感一电容一电感（LCL）滤波器接入电网，控制系统采用开放的分层控制架构。利用该设计方案研制了样机，样机试验结果验证了该设计方案的可行性，样机能够完成锂电池储能系统的不同充电模式，相关参数可以满足并网要求。
병망변환기위리전지저능계통실현병망적핵심부건，위실현리전지저능계통여전망적쌍향공솔교환，제출료리전지저능병망변환기설계방안。해계통이새미공지능집성공솔모괴작위주요공솔기건，통과전감일전용일전감（LCL）려파기접입전망，공제계통채용개방적분층공제가구。이용해설계방안연제료양궤，양궤시험결과험증료해설계방안적가행성，양궤능구완성리전지저능계통적불동충전모식，상관삼수가이만족병망요구。
To achieve bi-directional power exchange be- tween lithium battery energy storage system and power grid, the grid-connected converter is the key component to imple- ment grid-connection of lithium battery energy storage system. A design scheme of grid-connected converter for lithium battery energy storage system is proposed. In the designed grid-connected converter, the Semikron integrated intelligent power, SKIIP） module is used as main power switch that is connected to power grid via LCL filter; an open hierarchical control structure is applied to the control system of the con- verter. Based on the design scheme, a prototype of grid-connected converter is developed and the testing results of the prototype show that different charging modes of lithium battery energy storage system can be implemented and the parameters of the prototype can meet the requirements of grid-connection, thus the feasibility of the proposed design scheme is verified.