The study of output increasing of the straight type turbine generator

The optical control method to obtain the maximum output with two hydraulic turbine generators directly connected of a pipe at the same flow rate is required. The output changes depend on how many open positions of upstream and downstream turbine runner is at the same flow rate. As a result, we can obtain the maximum power at the different open positions of upstream and downstream turbine with less than constant flow, and we can also get the maximum output at the same open positions of them with more than constant flow.