Selection of DC Voltage Level in household Hybird AC/DC power supply system

摘要

Building residential micro-grid of DC power supply need to determine the appropriate dc voltage. Too high or too low of the voltage can cause many problems. This paper analyzes the maximum withstand voltage of human body and the applicability of household appliances under the condition of dc power supply. Then the economy of different dc voltage levels is discussed. We find that it is economical and safe to set the dc voltage level of 110V in residential power supply system.