This paper describes the architecture of a prototype for an OpenFlow based multi-domain VPN service, which is built in the Community Connection (CoCo) project. The prototype that is being developed will let end-users set up CoCo instances (VPNs) via an easy to use web portal, without needing the help of network administrators to do manual configurations of the network switches. The CoCo prototy...

This paper proposes an optimization method for planning adequate number and location of automatic switches in a radial distribution system. The purpose is to maximize the profit of that service reliability indices achieve the required level. First, a network equivalent technique is introduced to calculate the reliability indices. Second, by using the equivalent method, system reliability indice...

Performance issues of OpenFlow switches are attracting a lot of attention owing to the potential large-scale deployment of software-defined devices. This paper presents theOFBench which is an automatic test suite for evaluating the performance of OpenFlow switches. The design, as part of the Automation Control Test System (ACTS) development, is based on a controller-agent architecture which all...

The Reduced Asymmetric Neutral Point Clamped converter topology for unipolar driven, multiphase switched reluctance machines is proposed in this paper. This shares similarities with the conventional NPC and Asymmetric-NPC topologies, however it unique that components capacitor string outer semiconductor switches are shared among all phases a reduced component count. Some switching state combina...

In this paper, a new structure for cascade multilevel inverter is presented which consists of a series connection of several sub-multilevel units. Each sub-multilevel unit comprises of eight unidirectional switches, two bidirectional switches, and six DC voltage sources. For the proposed cascade topology, two algorithms are presented to produce all possible levels at the output voltage waveform...

In this paper a new design for 6 bit DMTL phase shifter with only 32 MEMS switches is proposed. The reduction in number of switches in ordinary 6 bit phase shifter from 63 to 32 is due to combination of one 5.625 degree for least significant bit and 11.25 degree for the rest of the switches. Decreasing the number of the switches reduces the die-size as well as loss of the CPW line. Analytical s...

Multilevel inverters have been developed due to limitations of the conventional two-level voltage source inverters (VSIs). Most of the topologies of multilevel inverters that have been presented in the literature are based on the sharing of the rated voltage between the switches so that the switches with lower voltage ratings can be used. In these topologies, the current rating of all of the sw...

For the Taiwan Power Company (Taipower), the margins of coordination times between the lateral circuit breakers (LCB) of underground 4-way automatic line switches and the protection equipment of high voltage customers are often too small. This could lead to sympathy tripping by the feeder circuit breaker (FCB) of the distribution feeder and create difficulties in protection coordination between...