lcl并网逆变器 三相并网逆变器，逆变电路是独立的三个功率模块。请问：这个逆变器可以接单相电并网吗？L1L2L3接一起。

三相并网逆变器，逆变电路是独立的三个功率模块。请问：这个逆变器可以接单相电并网吗？L1L2L3接一起。

绝对不能，相位不一样，短接直接不工作，如果逆变器没有保护功能有损坏风险

为什么并网逆变器一般都采用滤波电路与电网进行耦合？

答：并网运行的逆变器应用广泛，如在交流电子负载、可再生能源大规模并网发电的场合都需要逆变器并网运行，将系统内的电能回馈至电网中。然而，为了避免质量不好的并网电流对电网造成污染，并网电流的波形质量有严格的要求：电流为与电网电压同频反相的正弦波，且满足国际电工委员会标准。国际上对并网逆变器馈入电网的电流规定如下：波形为正弦，总谐波畸变率THD小于5%，各次谐波小于3%。
以单相并网逆变器为例，以使用不同滤波器拓扑结构：L型，LC型，LCL型，根据不同的工作场合选择相应的滤波器结构与合适的并网控制策略是决定并网逆变器馈入电网的并网电流质量的关键。

请问光伏逆变器网侧选L还是LC滤波？有什么依据

LC滤波，因为并网逆变器的输出涉及到电能质量，LC滤波主要是滤除逆变后的奇次谐波，3次，5次，7次等，使输出波形最大化的成正弦波。目前光伏逆变器应该还没有只用L滤波的，必须要C才能构成LC谐振，这样才有谐振频率，这样才能滤除相关谐波。

电气专业英语翻译...谢谢了!

The new energy incorporation electricity generation is the current research hot spot, incorporates the invertor is realizes the electrical energy to present electrical network's important link.But because incorporates the PWM signalling switch frequency which the invertor uses to be low, causes the output current to include the big overtone.This article to reduce the current harmonics which the turn-on frequency creates, introduces the LCL filter substitution model in the incorporation invertor the inductance filter, and aims at uses the LCL filter to incorporate the instability which the invertor system brings, proposed the bridge arm output current and the electrical network output current double closed loop control policy.Obtains the network voltage accurately the phase angle, has the vital significance in the electric power electronic installation design.Regarding needs the systemic voltage synchronization the electric power electronic installation, the phase information correct or not has the enormous influence to the control performance.Therefore in the article proposed one kind based on the intelligent PI control's software phase-locked loop, through the synchronized revolving coordinate track principle, serves phase-lock's purpose.Because has introduced the LCL filter, in the article has also carried on the analysis to the LCL filter's design.The simulation result proved that may suppress the harmonic current effectively using the LCL filter as the converter and electrical network's connection, incorporates the invertor double closed-loop control to cause the system stability and the dynamic further strengthens.

求助阮新波老师的《LCL型并网逆变器的控制技术》PDF

求助阮新波老师的《LCL型并网逆变器的控制技术》PDF_百度知道
链接：http://pan.baidu.com/s/1dFcQRU5 密码：d92e
XZXNPTWZBFJN

我做的并网逆变器经过lcl滤波后的并网电流为什么与电网电压有相位差，为90°，改怎么解决，求大神们指教？

电网电压定向矢量控制，锁相没整好吧

湖北仙童科技有限公司 高端电力电源全面方案供应商 江生 13997866467