DC bus imbalance in a split capacitor based rectifier or inverter system is a widely studied issue. In this paper the DC bus imbalance problem has been studied for a three phase four wire grid connected inverter where the midpoint of the split capacitor is connected to the neutral of grid. The problem has been analysed from common mode point of view and subsequently a low frequency common mode ...

This paper presents the modeling and simulation results of Z-Source Inverter based Static Compensator (STATCOM).The thirty bus system with and without STATCOM are modeled and simulated using the MATLAB software. The present work proposes Z-Source Inverter for the control of reactive power. Z-Source inverter would ensure a constant DC voltage across the DC link during the process of voltage. The...

In this paper a Near State Pulse Width Modulation (NSPWM) algorithm with reduced switching frequency is presented for vector controlled induction motor drives for reduced common mode voltage/currents. The proposed algorithm utilizes a group of three neighbor voltage vectors to construct the reference voltage space vector. In the proposed algorithm in each sector any one of the phases is clamped...

Renewable energy resources for electrical generation are normally free but not continuously available due to their sporadic availability. Thus, hybrid connections of various kinds made increase utilization renew-able energy. This paper involves a design renewable system employing maximum power point tracking (MPPT) techniques. The consists solar PV panels, small-scale wind turbine, and thermoel...

In this article our objective is to obtain steady state characteristics of shunt, series, and separately excited DC motors coupled with a centrifugal water pump supplied through a step-up, step-down, and cuk converter from photovoltaic generator. We assume that there are no storage batteries and, of course, the system must operate on maximum utilization i.e. maximum water must be pumped. It is ...

The trend in the electric power system is to move towards increased amounts of distributed resources which suggests a transition from the current highly centralized to a more distributed control structure. In this paper, we propose a method which enables a fully distributed solution of the DC Optimal Power Flow problem (DC-OPF), i.e. the generation settings which minimize cost while supplying t...

The article presents a comparison of different Direct Torque Control methods Stand-Alone Doubly Fed Induction DC-Voltage Generator, with classic field oriented control used as benchmark. system consists doubly fed induction generator the stator circuit which is connected to DC-bus diode rectifier, and rotor converter same DC bus. main problem this power generation are large torque oscillations ...

Good morning. Even as we gather, the Clintons are preparing for their historic bus ride from Monticello to Washington, DC. I have been thinking lately of the campaign bus as a metaphor for a populist administration; a populist administration that is determined to “look like America.” I think we would all be well-advised to consider how fundamentally nonpopulist is the conduct and image of scien...

Power electronics building blocks (PEBBs) are standardized building blocks used to integrate power electronics systems. The PEBB approach can achieve low cost, high redundancy, high reliability, high flexibility and easy maintenance for large-scale power electronics systems. This thesis presents the implementation of a 100kW PEBB-based soft-switched bus regulator for an 800V DC distributed powe...