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To keep pelton turbine running stably, it's important to ensure that the flow of each nozzle is the same. In order to keep the elctro-hydraulic servo nozzle system of pelton turbine synchronous, adjustable gain based on the gradient method of model reference adaptive control and coupling compensation are used. Discrete transfer function and difference equation of the controlled object are obtained...
The hydraulic losses of hydraulic turbine are mainly distributed in the volute, stay vane, runner and draft tube. The theories and practices show that the hydraulic loss of stay vane occupies a large proportion in total in low specific speed turbine and this problem is more serious in super low specific speed turbine. The super low specific speed Francis turbine, which has been widely used to drive...
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