Power systems with cold stand-by using ultra capacitors
1998
To achieve a power system of both high reliability and high efficiency, cold stand-by system is promising. It is necessary for this system to hold the output voltage for the duration of switching the malfunctioned power unit to the stand-by unit. Ultra capacitors give an interesting and simple solution to this problem. However, this device has comparatively large internal resistance and this causes power loss. This paper presents a basic study of the loss reduction of the DC power systems with cold stand-by using ultra capacitors. The power losses of the system are simulated and the method to reduce the losses is presented.
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