General Electric Company

Haier US Appliance Solutions, Inc.

Baker Hughes Oilfield Operations LLC

Rahul Radhakrishna Pillai

Vandana Prabhakar Rallabandi

Viswanathan Kanakasabai

Suma Memana Narayana Bhat

Shahid Ali

Ashutosh Kulkarni

Anton Max Linz

William John Bonneau

Chinmoy Goswami

Srinivas Satya Sai Mallampalli

Daniel Garcia

Tamer Fahed Khalaf

Jason Monclair Pittman

Jigarkumar Narendrabhai Hingu

Shahid Ali K

A driver unit for an interior permanent magnet motor (IPM) is presented. The driver unit includes sensor electronics configured to sense a phase voltage corresponding to one or more phase terminals of the IPM motor to generate a corresponding phase voltage signal. The driver unit further includes a controller electrically coupled to the sensor electronics and configured to extract one or more triplen harmonics of an order of a ninth harmonic and higher than the ninth harmonic of a fundamental frequency of the phase voltage signal corresponding to the one or more phase terminals. The controller is further configured to determine an angular position of a rotor of the IPM motor based on the extracted one or more triplen harmonics. Related motor assembly and method for controlling the IPM motor are also presented.

Driver unit for an interior permanent magnet motor and a motor assembly using the same

A stator-less electric motor for an MRI system is provided. The stator-less electric motor includes a body, a rotor rotatable connected to the body, and at least one coil winding disposed on the rotor. The at least one coil winding is arranged so as to rotate the rotor when energized via an electrical current in the presence of a magnetic field generated by a magnet assembly of the MRI system.

Stator-less electric motor for a magnetic resonance imaging system and methods thereof

Systems and methods for determining an out of balance condition of a washing machine are provided. In particular, a plurality of angular positions of a motor associated with a washing machine can be determined. The washing machine can include a wash tub, and a wash basket rotatably mounted within the wash tub. The motor is configured to rotate the wash basket within said wash tub. Data indicative of at least a single phase of motor current being applied to the motor can be obtained while the wash basket rotates. The data can be spatially sampled over at least a subset of the plurality of angular positions of the motor. An out of balance condition associated with the washing machine can be determined based at least in part on the sampled data.

Determining out of balance conditions of a washing machine

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Bengaluru, India

Rahul Radhakrishna Pillai