Simplified Dynamic Simulation of HVDC System by Digital Computer Part II-Design of Controller and Test Results

The paper introduces and develops a new technique for the design of HVDC control system, by representing the overall HV dc system by an approximate linear control system. From the frequency response of the uncompensated system the time constant of the controller is selected, and then based on the physical limitations the overall gain of the system is adjusted. The paper outlines the step-by-step method for the design of controller (inverse cosine method) by means of a digital computer. The selected control components are tested with the simplified digital models developed in a companion paper,8 and also with a more sophisticated program.1 The test results of the simple and detail program justify the development of the simple- program, and also the method of design for the control components.