Secure Power Always Modular architecture for high power UPS systems

Modular architecture for high power UPS systems

A Direct Power Feeding System for AC Railway Networks Using Modular Multilevel Converter

Abstract Traditional railway power supply systems impose substantial power quality problems (PQ) on the utility network, such as unbalance, harmonics and a large amount of reactive power. This paper proposes a topology based on three-phase to single-phase modular multilevel converters (MMC) to obviate these problems. The MMC based traction substations (TSS) are connected directly to the utili...

Distance-Aware Beamforming for Multiuser Secure Communication Systems

Typical cryptography schemes are not well suited for low complexity types of equipment, e.g., Internet of things (IoT) devices, as they may need high power or impose high computational complexity on the device. Physical (PHY) layer security techniques such as beamforming (in multiple antennas systems)  are possible alternatives to provide security for such applications. In this paper, we consid...

Smart Memories: A Configurable Processor Architecture for High Productivity Parallel Programming

With single processor systems running into instruction-level parallelism (ILP) limits and fundamental VLSI constraints, multiprocessor chips provide a realistic path towards scalable performance by allowing one to take advantage of thread-level (TLP) and data-level parallelism (DLP) in emerging applications. Nevertheless, parallel architectures are limited by the difficulty of parallel applicat...

A New Approach for Accurate Pricing of Reactive Power and Its Application to Cost Allocation in Deregulated Electricity Markets

Reactive power management plays an essential role in the secure operation of the power system as an ancillary service. Although in electricity markets, the particular attention is paid to active power, the reactive power also plays an important on total generation costs of electricity. On the other hand, as it is mainly confined to local consumption, to avoid market power and maintain the se...