Design for Six Sigma (DMADV) Methodology for Power Inverter Development

Hussein Salem Ketan; Karrar Mahdi Husain

Hussein Salem Ketan Engineering College Baghdad University-Iraq
Karrar Mahdi Husain Engineering College Baghdad University-Iraq

Keywords: DFSS, power inverter, Affinity diagram (KJ Analysis), Kano Model, QFD (House of Quality HOQ).

Abstract

This research highlights the importance and the role of Quality Function Deployment (QFD) in determining the critical customer requirements in developing the Power Inverter pure sine wave (1 KVA) product produced by the Electrical Industries Company (EIC). Define Measure Analyze Design Verify (DMADV) methodology, which is one of the Design for Six Sigma (DFSS) methodologies was applied taking the first two phases as a part I, in phase one (Define) applying Affinity Diagram (KJ Analysis) and Kano Mode tools to consist a powerful information base through brainstorming. In phase two (Measure) Voice of Customer (VOC) captured by Questionnaire form and applying Quality Function Deployment (QFD) tool in determining the Relative Importance (RI) for the Technical Requirements (TR) so that to choose the first three having the highest (RI) number which consider the Critical Customer Requirements (CCR) these are for power inverter product (Type of MOSFET “Metal-Oxide Semiconductor Field-Effect Transistor”, Transformer design, cooling system).