The power electronics sector is undergoing a massive transformation, driven largely by the demands of e-mobility and renewable energy integration. Today’s systems rely on highly complex, dynamic algorithms to maximize efficiency. A prime example is the shift towards multi-level, fast-switching inverters, which significantly reduce harmonic distortion and minimize the need for bulky passive components. Furthermore, the implementation of advanced control strategies, such as Model Predictive Control (MPC), requires immense computational power. MPC evaluates the effects of all possible switching states in real-time over multiple predictive steps—a task that pushes conventional control hardware to its breaking point.
The Limits of Traditional Microcontrollers
This computational demand is exacerbated by the rise of Wide-Bandgap (WBG) semiconductors like Silicon Carbide (SiC) and Gallium Nitride (GaN). These materials allow for much higher switching frequencies, demanding lightning-fast signal processing. While modern microcontrollers feature integrated hardware cores for Pulse Width Modulation (PWM) or Space Vector Modulation (SVM), they are inherently limited by their sequential processing architecture and hardwired peripherals. For R&D departments looking to innovate beyond standard, fixed modulation schemes, these rigid microcontroller structures often become a developmental bottleneck.
The FPGA Advantage and the “Skill Gap”
Field Programmable Gate Arrays (FPGAs) present the ideal solution. Unlike sequential microcontrollers, FPGAs allow engineers to create customized hardware and software architectures on a single chip. Because multiple process structures can be implemented simultaneously, control algorithms are executed in true parallel, offering unmatched performance and flexibility. However, there is a reason FPGAs are not yet the ubiquitous standard in power electronics: The barrier to entry is notoriously high. Developing for FPGAs traditionally requires specialized expertise in Hardware Description Languages (HDL)—a skill set deeply rooted in telecommunications and signal processing, but relatively rare among power electronics engineers.
Tetranes FRPS: Bridging the Gap
To overcome this exact challenge, Tetranes has developed the FPGA-Rapid-Prototyping-System (FRPS). This modular, FPGA-based development environment is specifically designed to make high-end processing accessible to power electronics developers without requiring them to become HDL programming experts. The FRPS is built around a rack-mounted modular architecture. At its core is a central FPGA processing card, which can be seamlessly customized with various expansion modules for specific tasks, such as high-speed inverter communication or analog data acquisition. The greatest advantage of the FRPS is its ability to decouple software innovation from hardware limitations. Engineers can design, simulate, and implement custom multi-level control systems (3-level or N-level) directly on the platform without constantly redesigning the underlying printed circuit boards. It even opens the door to experimenting with entirely new, non-PWM modulation techniques. Ultimately, the Tetranes FRPS provides R&D teams with a highly flexible, modular sandbox.
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