On Power Stream in Motor or Drive System

Polish maritime research

Prof. Zygmunt PaszotaGda?sk University of Technology 11/12 Narutowicza St. 80-233 Gda?sk, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Gda?sk University of Technology 11/12 Narutowicza St. 80-233 Gda?sk, Poland

关键词: Keywords: motors;    drive systems;    energy losses;    energy efficiency;    Sankey diagram;    new research field;   

DOI  :  10.1515/pomr-2016-0074

学科分类：工程和技术（综合）

来源: Politechnika Gdanska * Wydzial Oceanotechniki i Okretownictwa

【 摘 要 】

In a motor or a drive system the quantity of power increases in the direction opposite to the direction of power flow. Energy losses and energy efficiency of a motor or drive system must be presented as functions of physical quantities independent of losses. Such quantities are speed and load. But the picture of power stream in a motor or drive system is presented in the literature in the form of traditional Sankey diagram of power decrease in the direction of power flow. The paper refers to Matthew H. Sankey’s diagram in his paper „The Thermal Efficiency of Steam Engines“ of 1898. Presented is also a diagram of power increase in the direction opposite to the direction of power flow. The diagram, replacing the Sankey’s diagram, opens a new prospect for research into power of energy losses and efficiency of motors and drive systems.

【 授权许可】

Unknown