General Electric Renovables Espana, S.l.

Ge Vernova Infrastructure Technology LLC

Pushkar Chandrakant Chaudhari

Kapil Jha

Robert Gregory Wagoner

Werner Gerhard Barton

Fernando Arturo Ramirez Sanchez

Arvind Kumar Tiwari

Nathaniel Robert Michener

Parag Rameshchandra Dharmadhikari

Sonam Acharya

Prasun Mishra

Saurabh Shukla

A method for operating a power supply system connected to a grid, the power supply system including a rotor, a doubly-fed induction generator (DFIG), a power conversion assembly, and an active filter. The DFIG includes a generator rotor mechanically connected with the rotor and a generator stator. The power conversion assembly includes a rotor-side power converter. The active filter electrically connected with the generator stator via a stator bus and the rotor-side power converter electrically connected with the generator rotor via a rotor bus. Based on a rotor frequency of the generator rotor, the method determines an expected harmonic frequency for a stator current flowing on the stator bus. An amplitude of the stator current at the expected harmonic frequency is determined via a data set of stator current values. The method controls the active filter based on the amplitude of the stator current at the expected harmonic frequency.

Method for operating a power supply system that supplies power to a grid to maintain stator current occurring at a harmonic frequency below a threshold value

A method for controlling an active harmonic filter of an inverter-based resource includes receiving, via a maximum compensation tracker module, a grid feedback signal, determining, via the maximum compensation tracker module, a phase shift signal based, at least in part, on the grid feedback signal, applying, via the maximum compensation tracker module, a phase shift offset signal to the phase shift signal to obtain a modified phase shift signal, determining, via the maximum compensation tracker module, a voltage reference signal for the active harmonic filter based, at least in part, on the grid feedback signal and the modified phase shift signal; and controlling, via the maximum compensation tracker module, the active harmonic filter using the voltage reference signal, wherein the phase shift offset signal ensures that the active harmonic filter injects a current substantially out of phase of a targeted harmonic.

System and method for controlling an active harmonic filter in an inverter-based resource

A controller-implemented method and system for operating a multi-level bridge power converter connected to a power grid in a fault-tolerant operational mode, the power converter including a first converter coupled to a DC link, the first converter including a plurality of switching devices. The method and system determine an on/off scheme for the switching devices in the first converter when one or more of the switching devices has failed in a shorted state, wherein the on/off scheme is dependent upon phase current direction through the first converter. The phase current direction is indirectly determined by sensing a pole voltage of the first converter and implementing the on/off scheme in the fault-tolerant mode when the pole voltage changes from zero to a +/−value indicating that the phase current through the first converter has switched direction.

Fault tolerant system and method for continuous skip-fire pulse width modulation for an active neutral point clamped converter

Growing community of inventors

Bengaluru, India

Pushkar Chandrakant Chaudhari