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This paper presents an analysis of the protective snubber circuits in a high frequency transformer (HFT) linked three phase ac/ac power conversion system with reduced number of switches. This topology provides single stage power conversion with bidirectional power flow capability and input power factor correction. This topology is important because of reduced number of switches in the voltage source...
This paper presents the development of single phase AC/DC/AC converter using three-leg inverter. A uniform fixed switching frequency method of current control for both AC/DC and DC/AC converter stages has been proposed. A multiple control loop is used to control the input AC current and DC link voltages of the AC/DC converter and a cascaded H-bridge multilevel inverter (CHBMLI) is used to obtain the...
This paper proposes a generalized hysteresis current controlled three level voltage source inverter (VSI) based single phase shunt active power filter (SAPF). The three level inverter topologies considered in this paper are H-bridge and diode clamped inverters. A generalized hysteresis current control with multiband hysteresis modulation has been used to control the voltage source inverters in the...
In this paper a description of a solar photovoltaic (PV)-micro turbine grid interface using voltage source inverter (VSI) has been given for voltage support and control in rural applications. It is assumed that the availability of power in these areas is poor and unpredictable. In such cases a solar PV-micro turbine hybrid system can be used to complement the existing grid supply to improve its service...
Multiple wireless network interfaces in a single mobile device exist in order to support their diverse communications and networking needs. This paper proposes a general switching architecture, SwitchR, for managing radio communications for multiple (client) devices utilizing multiple heterogeneous radios per device. SwitchR is deployable incrementally within existing wireless infrastructures, and...
Recently the usage of distribution generation has significantly increased in the electric power distribution system. Wind generation system has potential application for the grid support. The voltage of the direct driven permanent magnet wind generators (PMSG) is variable due to the intermittent nature of the wind energy. Fluctuating voltage and power is of major concern in the converter based grid...
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