# Obtaining the Current-Flux Relations of the Saturated PMSM by Signal Injection

## TL;DR

This paper introduces a signal injection method to accurately determine the saturated current-flux relations of PMSMs, overcoming limitations of classical methods by eliminating resistance dependence and reducing voltage bias sensitivity.

## Contribution

It presents a novel signal injection technique for PMSM characterization that improves accuracy and robustness over traditional time integration methods.

## Key findings

- Method effectively determines saturated flux relations without resistance dependence
- Technique reduces sensitivity to inverter voltage biases
- Experimental results validate improved accuracy in PMSM modeling

## Abstract

This paper proposes a method based on signal injection to obtain the saturated current-flux relations of a PMSM from locked-rotor experiments. With respect to the classical method based on time integration, it has the main advantage of being completely independent of the stator resistance; moreover, it is less sensitive to voltage biases due to the power inverter, as the injected signal may be fairly large.