以碳化硅SiC功率晶体管为基础之全桥式微逆变器Micro-inverter

以碳化矽(SiC)功率電晶體為基礎之全橋式微逆變器(Micro-inverter)1Prepared by: AEC –High Power LAB (HPL)大綱1.方案規格2.系統方塊圖3.電路圖/PCBA/實體圖4.PLL 架構5.控制演算法6.軟件7.主要元件8.測試報告9.發佈套件21. 方案規格 (MPPT)3ParameterValueVin_nominal(額定輸入電壓)36VVin_max(最大輸入電壓)55VVin_min(最小輸入電壓)18VMPPT_DC input range ( MPPT DC 輸入電壓範圍)20V to 40VIin(額定輸入電流)12AImax (最大輸入電流)18A1. 方案規格(Inverter)4ParameterValueVbus (DC-DC 額定輸出電壓)380VVbus_max(DC-DC 最大輸出電壓)400VVac (AC 額定輸出電壓)110VAC/60Hz, 220VAC/50HzIac(AC 最大輸出電流)1.8A/220VAC, 3.6A/110VACPac (最大輸出功率)400W2. 系統方塊圖 5Source: AN4070 Application note (www.st.com)2. 系統方塊圖 DC-DC Converter6Source: AN4070 Application note (www.st.com)Gate 1Gate 2I(L2)I(L1)I(MOS2)I(MOS1)I(D1)I(D2)2. 系統方塊圖 DC-DC Converter (波形)7Source: AN4070 Application note (www.st.com)2. 系統方塊圖DC-DC Converter (參數設計) Calculation of the maximum duty cycle: In this topology the switch duty cycle is always >0.5. Let's call D the time beyond 𝑇𝑠/2for which the MOSFET is still closed:𝐷𝑚𝑎𝑥=𝑡𝑜𝑛,𝑚𝑎𝑥𝑇𝑠−0.5=0.2(1)𝑡𝑜𝑛,𝑚𝑎𝑥=0.7×𝑇𝑠(2)Calculation