Power electronics-based schemes require small simulation timesteps to properly represent high frequency switching and circuit dynamics. The RTDS Simulator is designed to achieve extremely small timesteps, allowing engineers to flexibly model the behaviour of power electronics (and the AC network) over a large frequency range in real time. Real control hardware can then be connected to the simulated network and tested to significantly reduce risk and improve performance prior to deployment.
The RTDS Simulator’s power electronics models are executed in the Substep environment, which contains fixed-topology converter models based on a groundbreaking predictive switching algorithm. Predictive switching allows the converter models to switch states resistively (rather than using LC switching) while still running at a very small timestep.
The RTDS Simulator’s power electronic models have been finessed so that they can run directly on NovaCor, the simulator’s main processing hardware, rather than external FPGA-based hardware additions. Running power electronics directly on the same powerful multi-core processor – and indeed, with the same software package – that handles the main network simulation has big advantages.
Simulate two- and three-level converters switched at frequencies in the tens of kHz range and test control or power Hardware-in-the-Loop with the simulation.
Simulate LCC, VSC, and MMC-based schemes and comprehensively test the controls for complex systems throughout development and prior to commissioning.
Simulate custom-topology converters at sub-microsecond timesteps and test their controls in the loop with the simulation