  Electrical motors are the most important source of mechanical energy in the
industrial world. Their modeling traditionally relies on a physics-based
approach, which aims at taking their complex internal dynamics into account. In
this paper, we explore the feasibility of modeling the dynamics of an
electrical motor by following a data-driven approach, which uses only its
inputs and outputs and does not make any assumption on its internal behaviour.
We propose a novel encoder-decoder architecture which benefits from recurrent
skip connections. We also propose a novel loss function that takes into account
the complexity of electrical motor quantities and helps in avoiding model bias.
We show that the proposed architecture can achieve a good learning performance
on our high-frequency high-variance datasets. Two datasets are considered: the
first one is generated using a simulator based on the physics of an induction
motor and the second one is recorded from an industrial electrical motor. We
benchmark our solution using variants of traditional neural networks like
feedforward, convolutional, and recurrent networks. We evaluate various design
choices of our architecture and compare it to the baselines. We show the domain
adaptation capability of our model to learn dynamics just from simulated data
by testing it on the raw sensor data. We finally show the effect of signal
complexity on the proposed method ability to model temporal dynamics.
