This paper presents an image reconstruction method to monitor the temperature distribution of electric generator stators. The main objective is to identify insulation failures that may arise as hotspots in the structure. The method is based on temperature readings of fiber optic distributed sensors (DTS) and a sparse reconstruction algorithm. Thermal images of the structure are formed by approp...

This s tudy a s se s se s the energy savings and cost-effect iveness of individual retrofi t op t ions and packages of measu res in s ingle-family buildings, ba sed on analysis of me te red energy consumpt ion and actual installation costs. We present results for 14 individual shell, heating system, and water heating measures, as well as 21 electric utility weatherization programs. The data on ...

An electric traction machine for an electric or a hybrid electric vehicle is usually designed for a specific operating point or cycle. For such an operating point or cycle, the masses and the cooling circuit of the electric machine determine the time dependent temperature distribution within the machine. For a specific load cycle, the thermal simulation of the machine can reveal possible mass a...

The use of static frequency converters, which have a high switching frequency, generates voltage pulses with rate change over time. In combination cable and motor impedance, this repetitive overvoltage at the terminals, influencing occurrence partial discharges between conductors, causing degradation insulation electric motors. Understanding effects resulting from converter–electric interaction...

Degraded insulating property of electric equipments will lead to serious accident and great loss for the utilities and customers. Partial discharge detection is an efficient diagnosis method to prevent the failure of electric equipments arising from degrading insulation. However, universal offline partial discharge detection could be performed only during shutdown of equipments. By using the pr...