摘要
目前无人驾驶航空飞机三相静止变流器中存在的高谐波成份对惯导系统的精度产生影响,针对这一问题,本文引入SPWM控制策略,分析了三相静止变流器输出电压的谐波成分及影响因素,设计出一种LC并联与LC低通滤波器级联的新型逆变输出滤波器,它克服了传统的通过加大LC滤波电路的电感量和电容量降低输出滤波器的截止频率来达到滤波效果的缺陷,具有体积小、重量轻等优点。通过Saber软件进行了仿真实验,结果表明,该方法是有效、可行的,具有工程实用价值。
Considering the limitation of high harmonics of unpoloted three-phase static inverter which affecting inertia navigation systemic precision, this article designs inverter output filter which is paralleled with LC and cascaded with LC resonant low-pass filter by analyzing the harmonic wave and influencing factor of SPWM aviation static inverter. It overcomes the breach which reduces the closing frequency of the output filter by enlarging inductance and capacitance of L-C filter circuit and has the advantage of small volume and light weight and so on. Simultaneously, the simulation is carried on with saber, and the result proves the trueness and rationality of the design.
出处
《电测与仪表》
北大核心
2008年第8期7-10,共4页
Electrical Measurement & Instrumentation
