針對大功率變頻電源高功率密度的要求，提出了一種新型疊層功率母線。這種功率母線采用5層式疊層功率母線技術，運用這種新型功率母線可有效地減小功率母線寄生電感，降低功率模塊開關過程中產生的尖峰電壓和功率母線對電源系統空間的電磁干擾，同時可以增加伴生電容，有利于提高高頻時的電容容量，減小電壓紋波。通過新型功率母線的應用，母線寄生電感降至40 nH左右，采用0.47 ?滋F的吸收電容，就可以獲得較好的吸收效果，簡化了吸收電路。

Abstract:

?This paper presented a novel terrace power generatrix used in high-power variable-frequency power source to meet the request of high power density of the power source. The power generatrix took the technology of the five terraces power generatrix. The novel terrace generatrix was propitious to reduce the power generatrix parasitic inductance，decrease the additional high voltage during the switching process， cut down the eletric interference in the power source system generated by power generatrix，add the parasitical capacity in high frequency process and reduce the ripple voltage. By the application of the novel power peneratrix，power generatrix parasitic inductance reduces to 40nH， by 0.47μF capacitor，it can get better absorption effects and simplify the absorption circuit.