[其它]Common-mode current inductively coupled emission of AC PWM drives

Abstract—The most common solution for modern adjustable ]-cSTtO  
speed drives is the use of induction motors fed by voltage-source +0g L!r  
inverters. The inverters using fast switching insulated gate l;i/$Yu7  
bipolar transistors (IGBTs) generate pulse-width modulated RAj>{/E#W  
(PWM) voltage pulses. The high carrier frequency along with T
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fast rise and fall time of the PWM switching results in nontrivial h&2l0|8k  
common-mode or ground currents noise. The current component /X%+z5  
can cause electromagnetic interference (EMI) noise to neighbour 4/AE;yX  
equipments and installations by either radiation from the motor `T3B  
cable or by cross-talk (inductive and capacitive coupling) with 3@\J#mR  
other conductors. This paper discusses the inductively coupled k8z1AP  
EMI noise from an ac drive system where there susceptible ,-[z?dvO  
devices and a common ground plant are presented. The model 7> 8L%(7  
d .. T,h9xl9i  
Z7p!YTA  

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