Global ETD Search
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Showing 1 to 8 of 8 for “"Power Ripple"”.
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DC Reluctance Machine — A Doubly-Salient Reluctance Machine with Controlled Electrical and Mechanical Power Ripple
… electrolytic capacitors, (2) large torque ripple, and (3) acoustic noise. Conventionally, these drawbacks have been addressed independently either through (1) excitation control or (2) machine design, but not as a holistic system or solution. This disseratation presents a design for …
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Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
… integration of RES into the grid incorporates power electronic converters for energy conversion. Voltage unbalance is one of the typical adverse grid disturbances commonly encountered in RES. Power quality (PQ) issues have turned out to be major problem and become extra prominent for users from …
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The Modified-Multiphase Boost Converter: Combined Inductors and Capacitors Topology
… been proven to drastically reduce input current ripple by about 40% in a single-phase implementation. By placing two modified boost converters in parallel with interleaving main switches (multiphase), the input inductors and modified capacitors of the modified topology can be reduced to just one …
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Reliability analysis of single-phase photovoltaic inverters with reactive power support
Reactive power support is expected to be an emerging ancillary requirement for single-phase photovoltaic (PV) inverters. This work assesses related reliability issues and focuses on the second stage or inversion process in PV inverters. Three PV inverter topologies are analyzed and their …
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Bi-Directional AC-DC Converters for Electric Vehicles
… reliability, cost and efficiency. Meeting power quality standards imposed by grid and operation with wide range of DC voltage and current are among the other requirements. In addition, EV battery chargers can be used for ancillary services and also feed the power back to the grid in peak …
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An integrated generator-rectifier system for high-power AC-DC conversion
High power ac-dc conversion plays an increasingly important role in energy conversion systems, such as wind turbines or electric ship grids. Conventional conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system …
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Control of Pseudo-Sinusoidal Switched Reluctance Motor with Zero Torque Ripple and Damped Input Current Ripple
… advantage and ruggedness. However, the torque ripple and bus current ripple of SRM restrict its application range compared with traditional AC and DC motors due to the doubly salient pole structure and the highly non-linear coupling between torque, rotor position and phase current. As a result …
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Achieving Efficient Control of Hydraulic Systems Using On/Off Valves
… systems offer a range of benefits, such as high power density, ruggedness, linear actuation, and low cost, which have led to the use of hydraulic actuation systems throughout a wide range of industries. However, they also typically suffer from lower efficiency than competing methods of actuation, …