【作者】 陈万；

【导师】 谢少军；

【作者基本信息】 南京航空航天大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 目前航空静止变流器多采用能量集中变换方式，这导致系统热损耗集中，可靠性低。本文提出一种以级联逆变器为核心的模板化航空静止变流器，该方案具有模块化程度高、能量分布变换和高效率等优势，可以实现系统的高功率密度。 级联型逆变器和其它两种多电平逆变器(二极管箝位型，飞跨电容型)相比具有结构简单、控制方便等优点。载波移相正弦脉宽调制技术有独特的消谐波优势，其等效开关频率高，输出波形正弦度好，可以大幅减小滤波器体积，为实现系统的高功率密度奠定基础。为提高航空静止变流器动态特性，本文采用输出电压和电容电流瞬时值反馈技术，较传统的电感电流控制技术，具有动态响应快、外特性好、非线性负载能力强等优点。 制作了一台瞬时值控制的级联型航空静止变流器，进行了系统的电气性能测试，各项指标都达到预期性能。更多还原

【Abstract】 At present the concentrated power conversion is adapted by most of the Aviation Static Inverter (ASI). It makes a concentrated heat and a poor reliability. In this paper a new modularization ASI centered a cascade inverter is presented. The strategy has the advantage in modularization and high conversion efficiency. It can also realize energy conversion in distribution and high power density.Cascade inverter shows the virtue in structure and control strategies compare to diode-clamped multilevel inverter and flying-capacitor multilevel inverter. The volume of the output filter can be reduced greatly used in cascade inverter with carrier-phase-shifted SPWM technology which has a high equivalent switching frequency and a good output sine wave. It is the base of the high power density of ASI. To quicken the dynamic response of ASI, a current-mode control technology with instantaneous capacitor-current feedback is adapted in this paper. Inverters with this technology have advantages in dynamic response, output characteristic, the adaptive capability in nonlinear load compare to traditional inductor-current feedback.A cascade ASI experimental prototype with instantaneous control strategy is accomplished. All the guide lines attain the expected request in the all-sided tests.更多还原