A manipulation and control scheme of paralleled diesel-generating sets in China

Taking paralleled diesel generating sets as an example, the practical controller requirements of paralleled AC power supplies and the characteristics of parallel operation are analyzed. An automatic manipulation control scheme by means of a 'four-position' switcher is proposed. New ideas of load operation control and synchronizing control are presented. The novel optimal control scheme and fast phase-locked synchronizing control scheme are proposed. All research results are verified by digital simulation, micro-alternator simulation and set experiment, and are used in 300 kW diesel-generating sets.<
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