| 摘要 |
A hydrostatic transmission for regulating an output power from a natural energy source such as wind or wave power has at least two hydrostatic actuators (pumps) 8, 10 on the input side, driven by the input power, and at least two hydrostatic actuators (motors) 12, 14 on the output side, whose outputs are connected together e.g. to drive a generator. Each pump 8, 10 is connected in a separate hydraulic circuit with a respective motor 12, 14. At least one of the circuits has a capacity which can impose a working pressure on the circuit (i.e. an accumulator) 22. The circuit without the accumulator may be controlled to transmit the input power minus a predetermined offset. The circuit with an accumulator and hence a relatively constant pressure may be controlled to transmit the difference between the target output power and the power transmitted by the first circuit. Output power delivery is therefore smoothed at a very early stage in the power conversion process. |
