GE Optimal Control Logic for Enhanced Performance in Gas Turbines

CPC Logic

One of the enhancements recently introduced by GE Energy is the Corrected Parameter Control logic (CPC). This type of control philosophy applies principally to mechanical drive units, and consists of an exhaust temperature control curve that self adjusts according to the condition of the inlet filters and actual power turbine speed. This allows the engine to be operated at optimum conditions not only at the nominal point, but over the entire operating envelop of inlet conditions and power turbine speeds. The results of this improvement have already been proven in the field, as shown in the following figure (relating to the test of a GE10-2 unit at various free power turbine speeds). Thanks to the application of CPC logic it has been possible to significantly increase the maximum output without compromising the safe operation of the unit by simply optimizing its operation in real-time.

The variable free power turbine speed element of the CPC logic is provided as standard on the GE5-2, MS5002D DLN and MS5002E models, and on all new GE10-2 units. The possibility to retrofit existing gas turbine models with this solution is also offered.

	Ambient Temperature 22°C
	102
	101
	100
	99	CPC Control Logic
	98
(%)	97
	96			Old Control Logic
Power	95
	94
	93
Shaft	92
	91
	90
	75	80	85	90	95	100	105

Power Turbine Speed (%)

21 GE Energy Gas Turbines