Hamilton Sundstrand Corporation

Goodrich Control Systems Limited

Goodrich Actuation Systems Limited

Joshua Parkin

Daniel Diaz-Lopez

Grzegorz Popek

Virgilio Valdivia Guerrero

Thomas Gietzold

Virgilio Valdivia-Guerrero

The present disclosure provides a system and method that provides active damping at the input of a motor drive system without the need for the hardware used in conventional and RC damping circuits. According to the disclosure a virtual damping network is realised at the input of the motor drive system based on modification of field-oriented control, FOC. More specifically, a control algorithm creates a virtual damping impedance at the motor drive input by applying a damping algorithm to both q and d components of the motor current.

Active stabilization of DC link in motor drive systems

The present improvement essentially integrates a DC link inductance within an interphase power transformer (IPT). The integration is achieved by creating auxiliary magnetic paths for leakage inductance inside the IPT core. The magnetic path can be created, for example, by incorporating extra portions of magnetic material commonly referred to hereinafter as shunts. The IPT flux shared between windings does not cross these shunts. Therefore, this magnetic path increases the self-inductance of the IPT but does not contribute to the mutual inductance between windings. This extra magnetic path allows for leakage inductance of a much higher quantity than that achievable with a conventional IPT.

Autotransformer rectifier unit

Growing community of inventors

Solihull, United Kingdom

Joshua Parkin