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arXiv · 2504.10360

Reactive power flow optimization in AC drive systems

Sanjay Chandrasekaran·Catalin Arghir·Pieder Joerg·Florian Doerfler·Silvia Mastellone
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Abstract

This paper explores a limit avoidance approach in the case of input (modulation) and output (current) constraints with the aim of enhancing system availability of AC drives. Drawing on the observation that, in a certain range of reactive power, there exists a trade-off between current and modulation magnitude, we exploit this freedom and define a constrained optimization problem. We propose two approaches, one in the form of an activation-function which drives the reactive power set-point towards safety, and an approach which uses online feedback optimization to set the reactive power dynamically. Both methods compromise reactive power tracking accuracy for increased system robustness. Through a high fidelity simulation, we compare the benefits of the two methods, highlighting their effectiveness in industrial applications.

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Sanjay Chandrasekaran, Catalin Arghir, Pieder Joerg, Florian Doerfler, Silvia Mastellone. 2025-04-14. Reactive power flow optimization in AC drive systems. https://arxiv.org/abs/2504.10360

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