欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以广泛用于高压大容量功率变换的H桥单元逆变器为研究对象，将其直流母线改进为层叠母排结构，基于部分单元等效电路（PEEC）的方法建立了改进前、后母线的等效电路。对母线PEEC模型的等效参数进行分析表明，改进后母线的等效电感与等效电阻下降了一个数量级，而正负母线之间的等效电容增加了100倍以上。计及直流滤波电容组参数的电路仿真表明，在同样的开关暂态电流激励下，母线结构改进后，暂态电压的上升率和峰值比改进前减小了50％以上。试验与仿真结果符合较好，证明了改进是有效的。
英文摘要：
H-bridge unit is widely used in high capacity inverters. The DC power bus of the studied H-bridge unit was improved to planar structure. The high frequency equivalent circuits of the two buses were constructed based on partial element equivalent circuit （PEEC） method. The total equivalent parameters of the PEEC model were defined and calculated. The total equivalent inductance of the improved bus is smaller than that of the original bus to about one twelfth, and the total equivalent resistance is decreased to about one eleventh. The equivalent capacitance between positive and negative bus increases for over 100 times. The circuit simulation based on PEEC model indicates that the peak value and rise rate of the spike voltage of the improved bus are attenuated about 50%. The experimental results confirm to the simulation. The bus improvement based on PEEC model analysis is effective. PEEC model of bus provides a way to improve or optimize the bus structure.
同期刊论文项目
同项目期刊论文
Hybrid Selective Harmonic Elimination PWM for Common-Mode Voltage Reduction in Three-Level Neutral-P
Mathematical Models of the System-Level Safe Operational Areas of Power Electronic Converters in Plu
Analysis of cutting-edge techniques in the high voltage and high power adjustable speed drive system
期刊信息
位置：