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This paper presents a real-time monitoring system for PV power plants based on a microcontroller Atmega328P-PU. The proposed system, whose performances can be relatively close to those achieved with commercial monitoring systems, is simple, low-cost and open source technology-based. In addition, a user interface, capable to communicate through a wireless network by using a standard communication protocol...
The purpose of this paper is to present the digital overcurrent detector for the peak current mode dc-dc converter which has been already applied to the server for the data center. The proposed peak current detection circuit is composed of the RC integrator and comparator as the A-D converter for the detected current. The proposed method can detect the overcurrent by using the RC integration time...
This study introduces a novel and powerful speed control system with computer interface for wound-rotor induction machines (WRIM). In order to improve the sensitivity and stability of the control process, a high-speed digital signal processor (DSP) is used as the main controller. A serial resistor is connected to rotor side of WRIM to control the output power of the machine. The power consumed on...
Modular UPSs have more than ten years of history, and have been widely used in large data centers thanks to their features of high availability, high scalability, easy maintenance, high efficiency, and many other advantages. The reliability of a modular UPS primarily depends on the system architecture design which should be simple and decoupled to avoid single points of failure. Key parts such as...
This paper proposes a real time symmetrical coordinate transformation applied for the fault-ride-through when the imbalanced fault occurs in the utility power system. The power conditioner of the photovoltaic system in Japan is required to remain connected when the utility power system fault occurs under certain condition. The most popular fault is 1 line-to-ground fault. The next is 2 line-short-circuit...
This paper develops an integrated traffic-power control algorithm based on a previously proposed cellular networks study. A real-time battery bank state of charge (SOC) estimation technique is introduced using predicted renewable energy. The proposed approach allows the cellular networks system to be more resilient by increasing power supply availability and reducing the excessive discharges which...
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