Active Feedback and Control of High Power Ćuk Converter for Fusion Applications

Eagle Harbor Technologies, Inc. (EHT) has developed a control module for active feedback and control a high power Ćuk converter. This control module will be used at Pegasus Toroidal Experiment to maintain a precision current flat top on the helicity injectors. The EHT controller allows for high-power arbitrary waveform on microsecond-timescales. EHT modeled the control algorithm and explored edge case scenarios for the Pegasus application. A hardware solution was designed around the STM32 microcontroller, and software was developed, including a graphical interface. EHT demonstrated precision waveform control with the controller on a small-scale Ćuk converter. We will present the modeling work, system capabilities, and initial data. This controller will allow Pegasus to extract the maximum energy from their capacitor bank while maintaining a flat-top current profile.