Supercharged combined cycle system with air flow bypass to HRSG

摘要

A supercharging system includes a fan (130) providing an air flow, and a prime mover (131) that drives the fan (130). A duct (132) directs a first portion of the air flow to a gas turbine system (113), a main bypass subsystem (133) diverts a second portion of the air flow to a heat recovery steam generator (123); and a drive bypass subsystem (145) that diverts a third portion of the air flow to the prime mover (131). The prime mover (131) may be one of an aeroderivative gas turbine, a gas turbine, a reciprocating engine, a steam turbine and an induction motor and a variable frequency drive.