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Crop area extent estimates and crop type maps provide crucial information for agricultural monitoring and management. Remote sensing imagery in general and, more specifically, high temporal and high spatial resolution data as the ones which will be available with upcoming systems such as Sentinel-2 constitute a major asset for this kind of application. The goal of this paper is to assess to which...
Active Power Factor Correctors (PFCs) are needed to design ac-dc power supplies with universal input voltage range and sinusoidal input current. The classical method to control PFCs consists in two feedback loops and an analog multiplier. Hence, the input current is sinusoidal and it is in phase with the input voltage. However, a bulk capacitor is needed to balance the input power and the output power...
Passive standby and line-interactive uninterruptible power supplies (UPSs) have lower cost and size than double conversion UPS and their efficiency is higher. On the other hand, their voltage regulation is poor (or non-existent) during the normal mode of operation. Moreover, both UPSs have a transfer time (also defined as switching time) from normal mode to stored energy mode when the utility power...
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