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Losing Step Research of Stepper Motor for Asymmetric Governor
Pages: 3-6
Year: Issue:  5
Journal: Hydropower Automation and Dam Monitoring

Keyword:  three gorgesasymmetricgovernorstepper motorlose step;
Abstract: Losing step seriously affects the stability and security of the stepper motor based governing system.After using the stepper motor controller-based governing system,the losing step phenomenon appeared in the Three Gorges Power station.In order to analyze and study the reason of losing step,technical staffs add the feedback loop monitoring hardware of stepper mo-tor driver,and improve losing step detection and restart process of stepper motor.Through these responses,the controller per-formance after the losing step of stepper motor was improved,and security and stability of the unit governor was also en-hanced.
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