Large motors are typically oversized due to various design factors and design requirements listed in various industry specifications. In many cases, large motors are oversized by 20% to 50%, and this has significant impacts on the performance of the large motors and the greenhouse gas (GHG) emissions. For the purpose of this article, the term “design factor stacking” is used to describe the process of a motor sizing considering multiple sizing design factors, from different disciplines, one design factor on top of another. Stringent motor specifications such as low inrush, reduced voltage starting, and multiple and rarely used hot and cold starts negatively impact motor sizing and efficiency. This article aims to investigate specification impacts on motor design, operating costs, and GHG emissions over a 20- to 25-year life span. A user-led case study is presented.
Provides society information that may include news, reviews or technical notes that should be of interest to practitioners and researchers.
Provides society information that may include news, reviews or technical notes that should be of interest to practitioners and researchers.
