scholarly journals Tool of the Complete Optimal Control for Variable Speed Electrical Drives

10.5772/57521 ◽  
2014 ◽  
Author(s):  
Marian Gaiceanu
Keyword(s):  
Optimal Control ◽  
Variable Speed ◽  
Electrical Drives

A TWO LOOP OPTIMAL CONTROL OF FLEXIBLE DRIVE TRAIN VARIABLE SPEED WIND POWER SYSTEMS

2005 ◽  
Vol 38 (1) ◽  
pp. 344-349 ◽  
Author(s):  
Iulian MUNTEANU ◽  
Antoneta Iuliana BRATCU ◽  
Nicolaos Antonio CUTULULIS ◽  
Emil CEANGÂ
Keyword(s):  
Optimal Control ◽  
Power Systems ◽  
Wind Power ◽  
Drive Train ◽  
Variable Speed ◽  
Wind Power Systems

Optimization of the Part-Load Control Strategy for a Two-Shaft Microturbine With Intercooling, Reheat and Recuperation

2009 ◽  
Author(s):  
Jussi Saari ◽  
Juha Kaikko ◽  
Jari L. H. Backman ◽  
Jaakko Larjola
Keyword(s):  
Optimal Control ◽  
Control Strategy ◽  
Speed Control ◽  
Load Control ◽  
Inlet Temperature ◽  
Variable Speed ◽  
Turbine Inlet Temperature ◽  
Part Load ◽  
Turbine Inlet ◽  
Variable Speed Control

Microturbines have become popular among small-scale distributed energy systems. This paper focuses on a two-shaft arrangement where high efficiency is obtained through intercooling, reheat and recuperation. An optimized method for controlling the part-load performance via variable speed control of the generator shaft in addition to the turbine inlet temperature reduction is presented. The studied methods to reduce the power output were variable speed control of the generator shaft in combination with independent turbine inlet temperature control of both turbines. Optimization was performed by using a differential evolutionary algorithm to find a sufficient number of points at steadily reducing power settings to determine the optimal control curves for the three control parameters. In the microturbine model the operating values of the engine were obtained by solving the system of nonlinear equations formed by the governing relations. As a result an optimal part-load control method was found which provides better part-load efficiency than any of the studied control methods alone or in simple combinations could have provided. The optimal control strategy and the relative change of part-load electric efficiency were shown to be fairly independent of the design-point specifications for the turbomachinery and recuperator.

Sign in / Sign up

Export Citation Format

Share Document