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An ac voltage regulating system of doubly Salient Electro-magnetic Generator has been performed in this paper. In order to maintain the high voltage 360VDC stable, the dual boost converter with fixed frequency PWM controlled is adopted. Three-phase dual buck inverter was adopted to output 115VAC/400Hz. the generating system configuration, control strategy of dual boost converter and three-phase dual...
This article presents speed controlling for single phase induction motor. Principally, 9-level, diode-clamp inverter used to control voltages per frequency is widely used because of its high efficiency to control the motor. In this article, ARM7 model ADU7024 is used as microcontroller to generate eight pulse signals and send to the output voltage amplifier by co-connecting to the modulation module...
This paper presents design and implementation of voltage source inverter type SVPWM for control a speed of induction motor. This scheme leads to be able to adjust the speed of the motor by control the frequency and amplitude of the stator voltage, the ratio of stator voltage to frequency should be kept constant. The model of control system is implemented in real time Xilinx FPGA XC3S 400E and PI controller...
Driven by the compulsory requirement of dilution the deleterious gas immediately in coal well underground laneway for safety production, a novel pulse density modulation (PDM) HF converter for the mining local fanner is introduced in the paper. In this PDM converter, the high frequency technique is employed to minimize the converter cubage owing to the limitation of the small work space in the underground...
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