Power system having a phase locked loop with a notch filter

Details Power system having a phase locked loop with a notch filter Power system having a phase locked loop with a notch filter

2005-12-20

2005-12-20

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C323S207000

Reexamination Certificate

active

06977827

ABSTRACT:
A power system having a phase locked loop (PLL) with a notch filter for synchronous reference frame sequence separation. The notch filter includes a generalized integrator tuned to the notch frequency. The output of the generalized integrator is summed with the filter input signal and the output of the summer is fed back to the integrator input. In one embodiment, the notch filter is programmable by a control signal generated in response to the filter output signal, thereby causing the filter to self-regulate to a frequency related to the PLL input signal. Illustrative power systems include active VAR generators and active rectifiers. One or more additional notch filters may be used to remove harmonic components from derived synchronous reference frame sequence components.

REFERENCES:
patent: 5329221 (1994-07-01), Schauder
patent: 5384696 (1995-01-01), Moran et al.
patent: 5428283 (1995-06-01), Kalman et al.
patent: 5642003 (1997-06-01), Edwards et al.
patent: 5734257 (1998-03-01), Schauder et al.
patent: 5883796 (1999-03-01), Cheng et al.
patent: 6201715 (2001-03-01), Huggett et al.
Yongsug Suh, Valentin Tijeras and Thomas A. Lipo, A Nonlinear Control of the Instantaneous Power in dq Synchronous Frame for PWM AC/DC Converter under Generalized Unbalanced Operating Conditions, pp. 1-8, IEEE 2002.
Xiaoming Yuan, Jost Allmeling, Willi Merk, and Herbert Stemmler, Stationary Frame Generalized Integrators for Current Control of Active Power Filters with Zero Steady State Error for Current Harmonics of Concern under Unbalanced and Distorted Operation Conditions, pp. 1-8, Power Electronics and Electrometrology Laboratory, Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, 2000.

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