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Areas of research |
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Electromechanical energy conversion devices play an essential role in almost every aspect of our lives. Optimization of the performance in electromechanical energy conversion devices is possibly the next critical step in coming decades. A quantum leap in the quality of the energy conversion process can result in substantial increase in generation and tremendous conservation in consumption. Microscopic analysis of the energy conversion is an enabling methodology that not only provides an insightful understanding of the process but opens new horizons for objective and effective optimization of the productivity. At PECM, we have developed the groundwork for design practices using this revolutionary method. The basic idea in microscopic analysis and synthesis is to manipulate the distribution of the flux density components at a given instant of time to obtain the desired performance. Following figures demonstrate the distribution of the magnetic field components in various arts of machinery. |
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Switched Reluctance Machine |
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Normal component of the flux density |
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Tangential component of the flux density |
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Permanent magnet synchronous machine |
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Induction machine |
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Tangential component of the flux density |
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Normal component of the flux density |
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Radial and tangential components of the flux density |
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We are in the process of design and development of a SRM-based micro-machine and its driver for ultra-high speed applications. This development includes a detailed investigation of the electro-motion based on an electrostatic version of the conventionally known switched reluctance machine. A multi-stage inverter has also been designed to supply high voltage pulses to this device. The targeted objectives include harvesting energy, micro-turbines, fault tolerant converter topologies, and assessment of collective motion in a pool of MEMS.
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Design and development of highly efficient, compact, and low cost motor drive and power electronic converters is a center piece of our program. Adaptive control strategies, new circuit topologies, and optimal excitation for SRM, PMSM, and Induction motor drives are among the existing investigations. In addition, magnetic design, testing, and evaluation for various types of electric machinery is among our activities. |
