Research Of Diesel-generator Set Nonlinear Robust Control

Diesel-generator set, as the AC power resource, are widely used in shipping, communications and many areas of the national economy. It plays a vital role. Meanwhile, in order to improve the economy and utilization of energy, but also for certain special occasions, uninterrupted power supply, generally requires two or more equipped with diesel-generator sets operating in parallel, in order to ensure security of electricity supply.The diesel-generator sets of non-linear mathematical model of nonlinear robust optimal design is given the general steps to fully reveal the law of motion of diesel-generator sets, using feedback linearization methods to solve the diesel-generator set nonlinear problems. The nonlinear robust control theory applied to diesel-generator governor system.A synchronous generator voltage regulator system, the mathematical model gives the mathematical model for brushless excitation system for synchronous generator the control object, an analysis of its model uncertainty, has established a broad object of the synchronous generator mathematical model. And application of robust control theory is designed voltage controller.The diesel-generator set mathematical model of an integrated control system and diesel-generating sets for integrated control of the control program is given in this paper. First, given the mathematical model of diesel-generator sets, and then established on the basis of an integrated control system for diesel-generating sets of the mathematical model. This design nonlinear robust integrated controller system model taking full account of the uncertainty of the situation, successfully resolved the speed and voltage due to mutual coupling caused by the integrated control problem.The mathematieal model of governing system of two parallel diesel-generating sets using nonlinear robust advanced in this paper. Nonlinear robust control theory applied to diesel-generating sets in parallel integrated control system, improved the two parallel diesel-generating sets stability and the load distribution can be applied to realizing.Nonlinear robust control theory, the designed controller is able to take full account of diesel-generator sets model uncertainty of the situation, effectively improve the speed control system and the voltage regulator system accuracy and disturbance rejection ability to solve the speed and voltage integrated control problem. Computer simulation results show that the designed controller can effectively improve the system dynamic accuracy and the ability to suppress disturbances and improve the frequency stability of the power system.