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— We report on simple and intuitive techniques for the modelling of synchronous machines and their associated control systems. A scheme for control of electrical power flow is proposed for machines with variable–speed six–step drive. The scheme is developed with an eye toward efficient system operation, simple implementation, low latency in the control path(More)
Certain dielectric elastomers such as the 3M VHB 4910 acrylic adhesive films have exhibited electrically induced strains as high as 380 % in area expansion. The calculated maximum specific energy density of 3.4 J g –1 and maximum stress of 8 MPa are attractive for a wide range of applications including robotics, prosthetic devices, medical implants, pumps,(More)
Switched circuits in power electronics by their nature present hybrid behavior. Such circuits can be described by a set of discrete states with associated continuous dynamics. A control objective, usually regulation of the output in the face of disturbances in the continuous system, is accomplished by choosing among discrete states. We describe a hybrid(More)
The design, construction, and test of a high-speed synchronous homopolar motor/alternator, and its associated high efficiency six-step inverter drive for a flywheel energy storage system are presented in this paper. The work is presented as an integrated design of motor, drive, and controller. The performance goal is for power output of 30 kW at speeds from(More)
—This paper proposes a pulsewidth-modulation strategy to achieve balanced line-to-line output voltages and to maximize the modulation index in the linear modulation range where the output voltage can be linearly adjusted in the multilevel cascaded inverter (MLCI) operating under unbalanced dc-link conditions. In these conditions, the linear modulation range(More)
<para> The research presented in this paper concerns the design, construction, and testing of an electrical generator intended for interface with a MEMS internal combustion Wankel engine. The engine and the generator are integrated into a single unit by utilizing the engine rotor as the generator rotor. The design allows for thermal insulation between the(More)
Electrochemical advances in lithium-ion batteries are now being complemented by advances in battery management systems (BMSs). The larger format lithium-ion storage systems can require significant control of module balance levels, as well as temperatures and other safety parameters. Most BMS use passive balancing where modest amounts of energy are allowed(More)
This paper represents a comparative study of isolated resonant topologies for photovoltaic application such as half bridge, full bridge and push pull topology. The performance of these topologies is analyzed with the help of Pulse Width Modulation (PWM) technique. The stressful behavior of the switches is reduced by soft switching technique. So, the primary(More)
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