Abstract
This paper presents the design of a controller for the measurement and reduction of conducted Electro Magnetic Interference (EMI) caused in the power electronic circuits. The conducted EMI is also separating the Common Mode (CM) and Differential Mode (DM) simultaneously using Line Impedance Stabilization Network (LISN). EMI is mitigated by the fuzzy controller. By comparing common mode voltage with the standard reference value, the generated error can be minimized by using fuzzy controller. Fuzzy controller is varying the PWM signal of the power electronic switching devices for reducing the electromagnetic interference. In this paper, comparison of PI and fuzzy controller of the open loop and closed loop models are implemented using MATLABr and also simulation results of the PI controller and fuzzy controller analysis are presented in this paper. The fuzzy controller is provided to achieve the EMI level of the inverter within the standard limit.
Highlights
The rapid development of electrical/electronic equipments is increasing the various problems around the world
The conducted Electromagnetic Interference (EMI) measured emissions from the Equipment Under Test (EUT) consists of the Common Mode (CM) and Differential Mode (DM) noise
It has been generating the PWM signal based on the CM noise voltage for maintaining the EMI level within the CISPR standard
Summary
The rapid development of electrical/electronic equipments is increasing the various problems around the world. One of the most important problems is Electromagnetic Interference (EMI), which would result in malfunctioning of circuits, skin effect, power quality problems, etc., due to high dv/dt and di/dt of the switching devices. It causes an undesirable response in other equipments and degrades the performance of electronic systems, which. LISN circuit is used to measure the conducted interference produced in the Equipment Under Test (EUT). This paper presents a LISN circuit with EMI separator for measuring the CM and DM simultaneously in EUT and subsequent reduction of the same. EUT is the inverter, in which conducted EMI measurement is taken using PI and fuzzy controller which measures and reduces simultaneously comparison of the EMI level of CM/DM within CISPR-22 from Comité International Spécial des Perturbations Radioélectriques standard
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