The IUP Journal of Electrical and Electronics Engineering
Impedance Source Inverter Fed Permanent Magnet BLDC Motor

Article Details
Pub. Date : Oct, 2018
Product Name : The IUP Journal of Electrical and Electronics Engineering
Product Type : Article
Product Code : IJEEE31810
Author Name : K Naresh, M Rambabu, A Balaji and G Naga Raju
Availability : YES
Subject/Domain : Management
Download Format : PDF Format
No. of Pages : 14

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Abstract

The permanent magnet Brushless DC (BLDC) motor can be used in various applications such as electric vehicles where portability and efficiency are required. The conventional Voltage Source Inverter (VSI), the most commonly used type of inverter, suffers from the drawback that it cannot boost the voltage of the input source. In order to satisfy the need for a single converter capable of both voltage boosting and inversion, many new inverter topologies have been proposed in the recent past. Among these new topologies, Z-source Inverter is gaining popularity over the others mainly because it continues to employ a conventional VSI as the power converter, yet with a modified DC link stage. The Z-source converter employs a unique impedance circuit to couple the converter main circuit to the power source, thus providing unique features that cannot be obtained in the traditional voltage-source (or voltage-fed) and current-source (or current-fed) converters where a capacitor and inductor are used, respectively. The Z-source converter overcomes the conceptual and theoretical barriers and limitations of the traditional voltage-source converter and current-source converter.


Description

Permanent Magnet Brushless DC (BLDC) motor is increasingly being used in automotive, computer, industrial and household products because of its high efficiency, high torque, ease of control and lower maintenance. A BLDC motor is designed to utilize the trapezoidal back Electromotive Force (EMF) with square wave currents to generate constant torque (Peng, 2003). The permanent magnet BLDC motor can be used in various applications such as electric vehicles where portability and efficiency are required. The conventional Voltage Source Inverter (VSI), the most commonly used type of inverter, suffers from the drawback that it cannot boost the voltage of the input source. In order to satisfy the pressing needs for a single converter capable of both voltage boosting and inversion, many new inverter topologies have been proposed in the recent past (Peng et al., 2004). Among these new topologies, Z-source inverter is gaining popularity over the others mainly because it continues to employ a conventional VSI as the power converter, yet with a modified dc link stage.


Keywords

Permanent magnet Brushless motor, Z-source inverter

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