A proportional integral(PI) control strategy is commonly used for constant current and extinction angle control in an HVDC system.A PI control strategy is based on a static design where the gains of a PI controller are fixed.Since the response of a HVDC plant dynamically changes with variations in the operating point,a PI controller's performance is far from optimal.The contribution of this paper is the presentation of the design of a Computational Intelligence based control scheme.Experimental results that compare the performance of the adaptive control and PI control schemes are also given.