Harmonic Filter Design For Induction Motor

Mohd Jamal, Abu (2005) Harmonic Filter Design For Induction Motor. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

lbis project is about to design harmonic filter for induction motor and do the simulation using PS CAD software. Harmonic is produced by unbalance load in power system. The sources of harmonics are equipments like computers, adjustable speed motors, electronic apparatus, battery charger and welding machine. When harmonics happen, its cause overload in neutral cable, overheated in motors and transformers, fuse may blow, circuit breakers always close/disclose, damage power factor capacitor banks, equipment failure and increasing the demand of KV A. To reduce this harmonic effect, effective filter system is required most. Types of filter used are band pass filter that filtering low harmonic order such as 3rd, 5th, 7th and etc, and also high pass filter that filtering high order harmonic and cover wide range of frequencies. Today, there are two common filter uses; passive filter and active filter. Passive filter consists of passive element like resistor, inductor and capacitor. Common type use is shunt filter that much cheaper than series filter. Active filter is functional by controlling current and voltage sources. The harmonic in induction motor will cause noise, vibration, overheated and shorten motors life operation. In my design simulation, I only choose 3 types of passive filter that are band pass, high pass and series filter.

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