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- W2589363986 abstract "This paper presents a high frequency transformer isolated, micro-controller based, three-phase, ac-to-dc voltage source inverter (VSI) for ac motor drives and uninterruptible power supply applications. The proposed converter produces a 3-phase sinusoidal ac output voltage from alternative energy sources (converted to a 12 V dc voltage source) while output voltage magnitude and frequency can both be controlled digitally using a micro-controller. A 3-leg full bridge converter topology with sinusoidaltriangle pulse width modulation (SPWM) with an amplitude modulation index, m a ≤ 1 is used. This converter uses a switching frequency of 50-200 kHz. A 3-phase 200 V, 60 Hz VSI is designed. The design work includes design of a control circuit for high frequency switching, regulated logic power supply, magnetic circuits for transformer and filtering, and a 3-leg bridge converter. The designed converter is simulated using PSPICE simulation software and simulation results are obtained. A prototype of the designed converter is built on a PCB and tested in the lab with a 3-phase induction motor load using Atmel micro-controller AT91SAM7S256 and power MOSFET IRFP460. Appropriate thermal distribution was considered and implemented while designing the PCB. An optically isolated gate driver circuit based around International Rectifier driver chip IR2131 was designed and implemented for high frequency switching of the MOSFETs. Experimental results are recorded and will be presented in this paper. This converter can be used as a stand-alone alternative energy source for ac motor drives and UPS application." @default.
- W2589363986 created "2017-03-03" @default.
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- W2589363986 date "2007-01-01" @default.
- W2589363986 modified "2023-09-26" @default.
- W2589363986 title "Micro-controller Based Three-phase Voltage Source Inverter for Alternative Energy Source" @default.
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