Design Synthesis and Experimental Validation of an AMB Controller with a Power Dense Amplifier for Retrofit Applications

This paper describes the design, development and validation of a high power amplifier used to up-rate the axial power amplifiers of a standard AMB controller. The VA rating of the amplifiers was doubled whilst maintaining the original footprint of the amplifier. The thermal management and other constructional challenges presented by such up-rating and high power density are discussed, together with some of the techniques used to overcome them. This up-rated system is suitable for retrofit applications where the controller is coupled to pre-existing AMB hardware. Preliminary results from such an installation are presented.