Off-design and control performance analysis of a novel supercritical carbon dioxide power cycle for waste heat recovery

•A novel sCO2 power cycle and control method for waste heat recovery is proposed.•The flexible and independent controls of two compressors can be made.•Adjustment of compressor outlet pressures is priority as flue gas parameters vary.•Main compressor control is more sensitive to variation of flue gas temperature.•Re-compressor control is more sensitive to variation of flue gas mass flow rate.