Patents Assigned to Basler Electric Company
  • Patent number: 10965232
    Abstract: The present system and method provides a cross-current compensation control system that provides for improved load sharing performance during the parallel operation of multiple generators through use of a Proportional Integral PI controller or a Proportional Integral Differential PID controller eliminating steady state error in reactive current sharing, with such providing a stable and robust response with uncertain variations of equipment in the power system through improved cross-current compensation when various system parameter uncertainties exist.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: March 30, 2021
    Assignee: Basler Electric Company
    Inventors: Kiyong Kim, Daniel Weber
  • Patent number: 10498271
    Abstract: An integrated control system and method which improves load application/rejection performance for diesel generating sets is disclosed. Feedback-linearizing control is used for voltage regulation, which removes interaction between automatic voltage regulation and speed regulation. A proper feed-forward signal is sent to the governor using load anticipation control. The integrated control reduces engine speed and voltage deviations. It is implemented in the voltage regulator, since it recognizes load changes before the engine. The integrated control helps the engine anticipate throttle adjustments in advance of load being recognized by the engine. Test results show an improvement in engine speed recovery after a large increase or decrease in load.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 3, 2019
    Assignee: Basler Electric Company
    Inventors: Kiyong Kim, Jeffrey A. Burnworth
  • Patent number: 9753096
    Abstract: A method, system and computer software for detecting an incipient failure of a generator in a power system including the steps of ascertaining one or more generator reference parameter of the generator for use as a baseline reference; measuring one or more operating parameter values of the generator; using the one or more operating parameter values to solve for an estimated present value of the one or more of the generator's current performance parameters using particle swarm optimization technique; and determining whether the estimated present values of the one or more of the generator's current performance parameters are outside of an acceptable limit.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: September 5, 2017
    Assignee: BASLER ELECTRIC COMPANY
    Inventor: Kiyong Kim
  • Patent number: 9574511
    Abstract: A method, system and computer software for providing a load anticipation feature for a diesel generating set including a diesel engine, a generator, a speed governor, and an automatic voltage regulator generator in a power system and computer data processor apparatus and computer executable instructions for ascertaining an equivalent linear speed control system whose response approximately matches the non-linear speed response of the diesel generating set; ascertaining at least one programmable parameter of the load anticipation feature based on a real power load applied to the diesel generating set and a desired speed response of the linear speed control system; generating a control output based on a measured real power load and at least one programmable parameter of the load anticipation feature; the speed governor receiving the control output and adjusting the speed of the diesel engine based on the control output.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: February 21, 2017
    Assignee: Basler Electric Company
    Inventors: Kiyong Kim, Jeffrey A. Burnworth
  • Patent number: 8866626
    Abstract: A method, system and computer software for detecting an incipient failure of a generator in a power system including the steps of ascertaining one or more generator reference parameter of the generator for use as a baseline reference; measuring one or more operating parameter values of the generator; using the one or more operating parameter values to solve for an estimated present value of the one or more of the generator's current performance parameters using particle swarm optimization technique; and determining whether the estimated present values of the one or more of the generator's current performance parameters are outside of an acceptable limit.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: October 21, 2014
    Assignee: Basler Electric Company
    Inventor: Kiyong Kim
  • Publication number: 20120050053
    Abstract: A method, system and computer software for detecting an incipient failure of a generator in a power system including the steps of ascertaining one or more generator reference parameter of the generator for use as a baseline reference; measuring one or more operating parameter values of the generator; using the one or more operating parameter values to solve for an estimated present value of the one or more of the generator's current performance parameters using particle swarm optimization technique; and determining whether the estimated present values of the one or more of the generator's current performance parameters are outside of an acceptable limit.
    Type: Application
    Filed: November 7, 2011
    Publication date: March 1, 2012
    Applicant: BASLER ELECTRIC COMPANY
    Inventor: Kiyong Kim
  • Publication number: 20090195224
    Abstract: A system and method for self-tuning a PID controller utilized with an exciter and generator, which includes a power source, an exciter electrically connected to the power source, a generator that is electrically energized by the exciter, and a processor that provides a PID controller that calculates system gain an estimated exciter time constant and an estimated generator time constant with a recursive least square with forgetting factor algorithm, wherein the estimated exciter time constant and the estimated generator time constant are utilized to calculate PID gains by the processor, wherein the processor includes a random input generator that is summed with the output of the PID controller as input to determine the PID gains using the estimated exciter time constant and the estimated generator time constant and the processor compares a digital value of rms generator voltage against a reference voltage as input into the PID controller.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Applicant: BASLER ELECTRIC COMPANY
    Inventor: Kiyong Kim
  • Publication number: 20090198386
    Abstract: A system and method of use for self-tuning a PID controller utilized with an exciter and generator is disclosed. The system includes a power source, an exciter electrically connected to the power source, a generator that is electrically energized by the exciter, and a processor that provides a PID controller that calculates an estimated exciter time constant and an estimated generator time constant using particle swarm optimization (“PSO”) to control exciter field voltage. The particle swarm optimization (“PSO”) technique includes increasing the voltage reference by a predetermined percentage over a predetermined time period, initializing each particle position of exciter time constant and generator time constant, calculating generator voltage, performing a fitness evaluation and then obtaining and updating best values. This is followed by repeating the steps of determining the generator voltage, the fitness evaluation, and the best values over a predetermined number of iterations.
    Type: Application
    Filed: July 31, 2008
    Publication date: August 6, 2009
    Applicant: BASLER ELECTRIC COMPANY
    Inventors: Kiyong Kim, Pranesh Rao, Jeff Burnworth
  • Patent number: 7365519
    Abstract: An excitation system that includes an exciter for generating a field voltage for a rotor, a first automatic voltage regulator and a second automatic voltage regulator. The first regulator receives an output voltage of the power generation system as an input, and the second regulator receives the field voltage as an input. An output of the first regulator is provided as a second input to the second regulator. The first regulator is in selective electrical communication with the exciter through a first line conductor having first separable contacts such that an output of the first regulator may be selectively provided as an input to the exciter. The second regulator is in selective electrical communication with the exciter through a second line conductor having second separable contacts such that an output of the second regulator may be selectively provided as an input to the exciter.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: April 29, 2008
    Assignee: Basler Electric Company
    Inventors: Irving A. Gibbs, Charles R. Mummert
  • Patent number: 7345456
    Abstract: A stabilizer and synchronous electric power generator system using same that provides both power system damping and excitation limiter functionality. The stabilizer includes a processing unit and a memory storing routines executable by the processing unit. The routines are adapted to receive a voltage signal indicative of a voltage and a current signal indicative of a current output by the generator system, generate, utilizing the voltage and current signals, a power system stabilizer signal for damping oscillations and one or more excitation limiter function signals for controlling excitation level. The routines are also adapted to generate a feedback signal for the generator system by combining the power system stabilizer signal and one or more of the one or more excitation limiter function signals.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: March 18, 2008
    Assignee: Basler Electric Company
    Inventors: Irving A. Gibbs, Charles R. Mummert
  • Patent number: 6239960
    Abstract: A reclosing relay is provided with switch settings and microprocessor control to permit emulation of a variety of different styles of motor-driven reclosing relays in power distribution systems. The reclosing relay is particularly suitable for replacement of General Electric Co. ACR11A, ACR11B and other similar model reclosing relays that are not electrically compatible with one another. Plug-and-play compatibility is provided by a chassis with electrical contacts that are both physically compatible with a variety of relay cases, and by switches that reconfigure the functions of the external terminals for compatibility with these types. The relay has a built-in microcomputer controller that is programmable through a serial port, and that provides for software emulation of the various required electrical functions of the reclosing relay.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: May 29, 2001
    Assignee: Basler Electric Company
    Inventor: Todd A. Martin
  • Patent number: 5761073
    Abstract: A programmable autosynchronizer for use with a system having generator and bus voltages and having a breaker circuit for connecting the generator and bus voltages to each other. The autosynchronizer synchronizes the frequency and phase of the generator and bus AC voltages by controlling the generator voltage. A microprocessor compares the frequencies of generator and bus voltage signals, the microprocessor generating a proportional difference signal having a parameter representative of a proportional difference in frequency between the generator and bus voltage signals. The proportional correction range extends within the synchronization range. The microprocessor permits a sync signal when the frequency difference of the frequencies of the generator and bus voltage signals is within the synchronization frequency range. A first output circuit responsive to the proportional difference signal provides a correction signal to the generator for varying the frequency of the generator.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: June 2, 1998
    Assignee: Basler Electric Company
    Inventor: Stephen E. Dickson
  • Patent number: 5751532
    Abstract: A relay for monitoring an electrical system to protect the electrical system from an overcurrent condition as a time dependent function of an electrical current level in the electrical system is disclosed. The relay includes a memory which stores a current level count and a current level detector coupled to the electrical system which detects the electrical current level in the electrical system over time. A microprocessor responds to the current level detector by varying the current level count in the memory as a function of the electrical current level over time. The microprocessor also detects an occurrence of the electrical current level falling below a minimum current level. A timer responds to the microprocessor by measuring a period of time during which the electrical current level is less than the minimum current level.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: May 12, 1998
    Assignee: Basler Electric Company
    Inventors: John M. Kanuchok, Jeffrey A. Burnworth, James A. Bright
  • Patent number: 5640060
    Abstract: An autosynchronizer for use with a system having generator and bus voltages and having a breaker circuit for connecting the generator and bus voltages to each other. The autosynchronizer synchronizes the frequency and phase of the generator and bus AC voltages by controlling the generator voltage. A microprocessor compares the frequencies of generator and bus voltage signals, the microprocessor generating a proportional difference signal having a parameter representative of a proportional difference in frequency between the generator and bus voltage signals. The proportional correction range extends within the synchronization range. The microprocessor permits a sync signal when the frequency difference of the frequencies of the generator and bus voltage signals is within the synchronization frequency range. A first output circuit responsive to the proportional difference signal provides a correction signal to the generator for varying the frequency of the generator.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: June 17, 1997
    Assignee: Basler Electric Company
    Inventor: Stephen E. Dickson
  • Patent number: 5331729
    Abstract: Method for forming a toroid coil on a toroidal body. A wire feeder feeds the wire forward in the direction of its length toward the toroidal body. The wire is fed along a path which at the toroidal body is generally tangent to the surface of the toroidal body and nonparallel to the radial plane of the toroidal body. A die having a wire forming path defined therein constrains the wire to bend as it is fed forward into the convolutions of a helix extending through the opening in the toroidal body and advancing circumferentially around the toroidal body to form the toroid coil.An inductor formed by the method of the present invention is also disclosed.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: July 26, 1994
    Assignee: Basler Electric Company
    Inventor: Edward A. Moorehead
  • Patent number: 5309312
    Abstract: An apparatus for protecting an electrical power system supplying electrical power to an electrical load comprises a transformer for sensing an operating condition of the electrical power system and for producing an analog signal representative of the operating condition, and a microcomputer for periodically sampling the analog signal and for converting the analog signal into a series of digital signals. The microcomputer includes circuitry for deriving a digital value representative of a square root of the series of digital signals and circuitry for processing the digital value over time to determine a processed value which is a function of both the sensed operating condition and time. A circuit breaker is responsive to the microcomputer for disconnecting the power system from the load in the event that the processed value is not within preset limits.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: May 3, 1994
    Assignee: Basler Electric Company
    Inventors: Timothy M. Wilkerson, Sidney B. Harden, Richard A. Freeman
  • Patent number: 5294879
    Abstract: A regulator provides a control signal for controlling a generator which is providing an electrical output. The electrical output includes an output voltage and an output current applied to a load. The regulator comprises a microprocessor, voltage sensing inputs and current sensing inputs which cooperate with the microprocessor to sense a parameter of the electrical output applied to the load and a first memory for storing predetermined parameters. The microprocessor compares the sensed parameter to its corresponding predetermined parameter stored in the first memory and generates an output signal representative of the comparison. The regulator further comprises a second memory for storing instructions for controlling operation of the microprocessor and generates the control signal as a function of the output signal from the microprocessor.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: March 15, 1994
    Assignee: Basler Electric Company
    Inventors: Richard A. Freeman, David C. Massey
  • Patent number: 5274907
    Abstract: Apparatus for forming a toroid coil on a toroidal body comprising a wire feeder for feeding the wire forward in the direction of its length toward the toroidal body. The wire is fed along a path which at the toroidal body is generally tangent to the surface of the toroidal body and nonparallel to the radial plane of the toroidal body. A die having a wire forming path defined therein constrains the wire to bend as it is fed forward into the convolutions of a helix extending through the opening in the toroidal body and advancing circumferentially around the toroidal body to form the toroid coil.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: January 4, 1994
    Assignee: Basler Electric Company
    Inventor: Edward A. Moorehead
  • Patent number: 5239278
    Abstract: A transformer assembly having a mounting plate of electrically conductive material An electrically conductive core of a transformer has an end mounted on the plate and electrically connected to the plate. A fastener on the plate engages an opening in a junction box. The plate provides an electrical connection between the core and the junction box to ground the transformer to the junction box. The transformer has a coil on the core, the coil having wires adapted to be connected to the terminal wires in the box. The plate and the fastener support the plate and transformer on the junction box.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: August 24, 1993
    Assignee: Basler Electric Company
    Inventor: Clete Andres
  • Patent number: 5014153
    Abstract: An apparatus for monitoring phased currents in a first winding and a second winding of a transformer and for disconnecting the transformer from a power source supplying the transformer when a difference between the magnitude of the current in the first winding and the magnitude of the current in the second winding exceeds a predetermined amount to indicate a fault condition is disclosed. The apparatus is used in combination with circuitry for generating first and second current signals each having a phase and magnitude which is a function of the phase and magnitude of the phased currents in the first and second windings, respectively.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: May 7, 1991
    Assignee: Basler Electric Company
    Inventor: Timothy M. Wilkerson