Development of a Floating Power Supply which obtains Power from High-Voltage Power Cable Using a Capacitor Voltage Divider

摘要

A new dual outputs floating power supply for the current measurement system of a high voltage power cable is developed. The following features are confirmed by the experiments. (1) The proposed power supply can obtain the power from both the current and the voltage of the power line. (2) When the obtained power is lower than the needed power, the output voltage can be intermittently supplied. (3) The excellent steady-state and transient characteristics are obtained.