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Asynchronous motors are widely applied in industry, agriculture production and daily life, but in practical application, asynchronous motor often works in empty or light load because of various factors, leading to a low power factor and efficiency, which cause a great waste of energy. Therefore, it is of important practical significance to research of asynchronous motor energy conservation issue....
Compared with traditional load, power electronic load (PEL) has the advantages of flexible configuration and energy saving. After discussing the topology of singer-phase AC PEL, the design methods of main circuit parameters and control system are presented. And then, simulation waves of the system are given to show the feasibility and accuracy of the design.
A new energy-saving scheme of voltage-regulation control for induction motors at periodically varying loads with almost constant speed is presented in this paper. The energy-saving principle, control strategies, triggering mode of SCRs are studied. Based on the analysis of the current oscillation in the voltage-regulation by 3-phase thyristors with the synchronous voltage signal, the solution to current...
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