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Paul M Espelage

from Salem, VA
Age ~88
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Also known as:
Paul E
Phone and address:
834 Cherrywood Rd, Salem, VA 24153
(540) 389-1561
Related to:
Sarah Anne Perrus, 54Tela Espelage, 23Johanna E Espelage, 56Dorothy L Espelage, 56Dawn M Espelage, 59Anthony S Espelage, 59Brian J Black, 56Johanna Hofen Espelage, 89Janette E Black, 56
Connected to:
Mike Espelage, 43Spencer C Espelage, 37Dan Espeland, 95Jodi A Espeland, 51Michelle R Espeland, 54Gerald R Espeleta, 87Jeremy Espeleta, 33Louise M Espeleta, 75Mark A Espelien, 64

Paul Espelage Phones & Addresses

  • 834 Cherrywood Rd, Salem, VA 24153 (540) 389-1561
  • 834 Cherrywood Rd, Salem, VA 24153 (703) 389-1561

Work

Position: Retired

Education

Degree: Graduate or professional degree

Resumes

Resumes

Paul Espelage Photo 1

Paul Espelage

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Location:
834 Cherrywood Rd, Salem, VA 24153
Industry:
Hospital & Health Care
Work:
Ge Healthcare
Retired
Paul Espelage Photo 2

Independent Electrical/Electronic Manufacturing Professional

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Location:
Roanoke, Virginia Area
Industry:
Electrical/Electronic Manufacturing

Business Records

Name / Title
Company / Classification
Phones & Addresses
Paul Espelage
Principal
Espelage Electrical Consulting
Business Consulting Services
834 Cherrywood Rd, Salem, VA 24153

Publications

Us Patents

High Power Motor Drive Converter System And Modulation Control

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US Patent:
59108924, Jun 8, 1999
Filed:
Jun 30, 1998
Appl. No.:
9/108041
Inventors:
James Patrick Lyons - Niskayuna NY
Vlatko Vlatkovic - Schenectady NY
Paul Martin Espelage - Salem VA
Albert Andreas Maria Esser - Delafield WI
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02M 75387
US Classification:
363 98
Abstract:
A high power motor drive converter includes a three level neutral point clamped (NPC) output power conversion stage including switches; a split series connected DC capacitor bank coupled in parallel with the NPC output power conversion stage; and a controller for selecting switch positions for controlling the NPC output power conversion stage and controlling a neutral voltage balance of the DC capacitor bank by using space vector modulation and predictive charge calculations.

Line-To-Line Voltage Reconstruction For Synchronizing Thyristor Power Converter

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US Patent:
43993958, Aug 16, 1983
Filed:
Sep 8, 1981
Appl. No.:
6/300200
Inventors:
Paul M. Espelage - Salem VA
Assignee:
General Electric Company - Salem VA
International Classification:
H02P 762
US Classification:
318803
Abstract:
The effect of commutation notches 35 appearing in the nominally sinusoidal alternating current (AC) line-to-line voltage, for example, v. sub. ab used to synchronize the firing of thyristors in three phase, phase-locked power converters 12 and 14 is essentially eliminated by reconstructing the corrupted line-to-line voltage by summing the integral of the corrupted line-to-line voltage. PSI. sub. ab with a signal proportional to the product of the delta load current, for example, i. sub. ab and the commutation inductance L. sub. c. The composite waveform. PSI. sub. ab +i. sub. ab. times. L. sub. c) resulting from the summation has well defined zero crossings 41 from which synchronizing pulses are generated for synchronizing the phase-locked thyristor firing circuit 18 implemented by either software or hardware techniques. Additionally, the reconstructed waveform is used to control commutation, particularly in the control of a load side converter i. e. inverter 14 which is utilized in an AC motor drive system.

Closed Loop, Microcomputer Controlled Pulse Width Modulated Inverter-Induction Machine Drive System

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US Patent:
42900018, Sep 15, 1981
Filed:
Aug 3, 1979
Appl. No.:
6/063126
Inventors:
Paul M. Espelage - Salem VA
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02P 534
H02P 742
US Classification:
318811
Abstract:
Closed loop control of a pulse width modulated inverter-induction machine drive system is accomplished with a pair of microcomputers. The first microcomputer generates a periodic interrupt signal and a reference signal representative of the desired magnitude of a preselected induction machine parameter, the reference signal varying in frequency and amplitude in accordance with an externally-varied frequency value and amplitude value, respectively. The second microcomputer, when interrupted by the first microcomputer, computes the difference between the first microcomputer reference signal magnitude and the actual preselected machine parameter magnitude and the difference between the actual inverter output current magnitude and a preset limit, and controls inverter thyristor conduction accordingly.

Method And Apparatus For Operating A Plurality Of Parallel Coupled, Arbitrarily Loaded Induction Machines From A Single Controlled Current Inverter

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US Patent:
42988314, Nov 3, 1981
Filed:
Mar 24, 1980
Appl. No.:
6/132783
Inventors:
Paul M. Espelage - Salem VA
John D. D'Atre - Ballston Lake NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02P 154
H02P 546
H02P 124
H02P 528
US Classification:
318112
Abstract:
A plurality of arbitrarily loaded induction machines are operated from a single, controlled current inverter by regulating the amplitude of inverter output current in response to the average of the individual induction machine phase angles, the machine phase angle being the phase relationship magnitude between machine air gap flux and current, and by regulating the frequency of inverter output current in response to the average of the individual induction machine phase angle and the slip frequency of the most heavily loaded induction machine. The most heavily loaded induction machine is thus assured of having sufficient flux, thereby greatly reducing the possibility of machine pull-out and resultant inverter instability.

Control For Bumpless Transfer Of An Ac Motor Between A Solid-State Inverter And A Supply Mains

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US Patent:
45874743, May 6, 1986
Filed:
Jul 2, 1984
Appl. No.:
6/626712
Inventors:
Paul M. Espelage - Salem VA
David L. Lippitt - Scotia NY
James M. Nowak - Roanoke VA
Assignee:
General Electric Company - Salem VA
International Classification:
H02P 128
H02P 130
US Classification:
318709
Abstract:
A power conditioner having a source and load converter each using a phase-locked loop to control their respective converter firings achieves synchronization with a supply mains by determining the phase error between supply mains and motor voltages by obtaining the instantaneous difference between the output signals of the source and load phase locked loops. This phase error is passed through a simple gain and summed with a speed regulator setpoint, which now becomes an inverter frequency regulator with the nominal setpoint being the supply mains frequency. The voltage amplitude error between the supply mains and the motor is obtained by comparing the absolute value of the source voltage with the properly scaled absolute value of the integrated motor voltage and this error signal is input to the flux regulator in a synchronous or induction motor controller in place of the normal input when not synchronizing.

Phase-Locked Loop Control Of An Induction Motor Drive

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US Patent:
45623961, Dec 31, 1985
Filed:
Jul 2, 1984
Appl. No.:
6/626999
Inventors:
Paul M. Espelage - Salem VA
David L. Lippitt - Scotia NY
Assignee:
General Electric Company - Salem VA
International Classification:
H02P 540
US Classification:
318809
Abstract:
A controlled current inverter (CCI) induction motor drive is controlled by controlling motor current and the angle between motor flux and motor current. The angle between motor flux and current is derived directly via a microcomputer phase-locked loop synchronized to the integrated motor voltage. The delay between the application of a firing signal to a thyristor and the initiation of line current is determined and compensated for to achieve the desired angle between motor flux and motor current.

Method For Providing Adaptive Control Of Variable Speed Ac Motor Drives

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US Patent:
44814577, Nov 6, 1984
Filed:
Nov 10, 1982
Appl. No.:
6/440780
Inventors:
Franz C. Zach - Vienna, AT
Bimal K. Bose - Latham NY
Paul M. Espelage - Salem VA
John S. Sicko - Schenectady NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02P 540
US Classification:
318803
Abstract:
A microprocessor based pulse-width modulated variable speed drive control system providing optimal switching angles based on minimizing r. m. s. current ripple. In addition, a closed loop double deadband control interacts with the optimal switching angles to insure close following of a desired function of a specified variable to be controlled.

Voltage Clamp Snubbers For Three Level Converter

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US Patent:
59826460, Nov 9, 1999
Filed:
Jun 30, 1998
Appl. No.:
9/108043
Inventors:
James Patrick Lyons - Niskayuna NY
Paul Martin Espelage - Salem VA
Vlatko Vlatkovic - Schenectady NY
Jing Wang - Schenectady NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02M 7521
US Classification:
363 58
Abstract:
A three-level NPC converter includes at least one phase leg including four series coupled electrical switches having a first pair junction between the first two switches and a second pair junction between the second two switches. First and second inner switch snubber capacitors are coupled in series at a neutral junction. First and second inner switch snubber diodes are respectively coupled to the first and second pair junctions and respectively coupled at first and second inner diode-capacitor junctions to the first and second inner switch snubber capacitors. First and second inner switch snubber resistors are respectively coupled between the first and second inner diode-capacitor junctions and respective portions of a DC bus. In one embodiment, the NPC converter further includes first and second outer switch snubber diodes coupled between respective first and second inner diode-capacitor junctions and respective portions of the DC bus. This embodiment may further include first and second outer switch snubber capacitors coupled in parallel with respective first and second inner switch snubber capacitors.
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Paul M Espelage from Salem, VA, age ~88 Get Report