Control for Modular Multilevel Converter

Description

Arm-modular control law for MMC
The proposed control law uses some symmetry properties of the MMC to simplify and distribute the control algorithm. Each arm only includes two control loops: the internal one is in charge of the arm inductor current tracking, while the outer one regulates the equivalent capacitor voltage of the arm (corresponding to its average internal energy). The DC power is controlled explicitly, and the AC power is adjusted such that each arm remains in steady-state conditions, individually. This method reduces the algorithmic complexity, lends itself well for hardware control distribution, and offers cleaner and more predictable dynamics.

TRL SCALE

TRL SCALE 2-3

Advantages

  • Reduced algorithmic complexity
  • Allows Distributed Control Structure
  • Very high dynamic performance

Applications

  • MMC for HVDC and MVDC
  • Advanced control

Deliverables

  • Detailed and average simulation models in MATLAB
  • PhD thesis chapter
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