1
William R Archer, Roger C Becerra, Brian L Beifus, Mark A Brattoli, Rajendra K Shah: Control system and methods for a multiparameter electronically commutated motor. General Electric Company, Ralph E Krisher Jr, January 7, 1997: US05592058 (187 worldwide citation)

A system which drives a component of a heating, ventilating, and/or air conditioning (HVAC) system in response to a system control signal such as a temperature signal provided by a thermostat. The system includes a motor having a stationary assembly and a rotatable assembly. The rotatable assembly i ...


2
Roger C Becerra, Brian L Beifus, William R Archer: Methods and systems for controlling air filtration systems. General Electric Company, Karl Vick Esq, Damian Wasserbauer Esq, Armstrong Teasdale, July 23, 2002: US06423118 (92 worldwide citation)

Methods and control systems for improving performance in an air filtration system are disclosed. The method includes monitoring performance of a blower motor in the air filtration system and adjusting blower motor torque based upon a measured airflow or a measured static air pressure within the air ...


3
William R Archer, Peter B Lytle, Rajendra K Shah, John E Wynberry: Integrated electronically commutated motor and control circuit assembly. General Electric Company, Ralph E Krisher Jr, April 9, 1991: US05006744 (75 worldwide citation)

A motor assembly includes a stationary assembly having a plurality of winding stages adapted to be electrically energized to generate an electromagnetic field and a rotatable assembly including a plurality of permanent magnet elements in magnetic coupling relation with the stationary assembly. The m ...


4
William R Archer: System and methods for driving a blower with a motor. General Electric Company, Ralph E Krisher Jr, January 7, 1997: US05592059 (73 worldwide citation)

A system for driving a blower of a heating, ventilating, and/or air conditioning (HVAC) system. The blower discharges heated or cooled air to a space for conditioning the air in the space by changing its temperature. A motor drives the blower at a speed or torque defined by a motor control signal th ...


5
William R Archer, Roger C Becerra, Brian L Beifus, Mark A Brattoli, David M Erdman, Thomas M Jahns, Gerald B Kliman, Wen Liang Soong, Charles M Stephens, Eric R Benedict, Michael W Degner: Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor. General Electric Company, Enrique J Mora, August 18, 1998: US05796194 (59 worldwide citation)

A single phase permanent magnet motor includes a rotor, a stator, and a quadrature axis winding positioned out-of-phase from a main winding of the stator for generating an output signal representative of rotor angular position. An integrator can be coupled to the quadrature axis winding for phase re ...


6
William R Archer, Roger C Becerra, Brian L Beifus, Mark A Brattoli, David M Erdman, Thomas M Jahns, Gerald B Kliman, Wen Liang Soong, Charles M Stephens, Eric R Benedict, Michael W Degner: Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor. General Electric Company, Damian Wasserbauer, Senniger Powers Leavitt & Roedel, November 16, 1999: US05986419 (56 worldwide citation)

A single phase permanent magnet motor includes a rotor, a stator, and a quadrature axis winding positioned out-of-phase from a main winding of the stator for generating an output signal representative of rotor angular position. An integrator can be coupled to the quadrature axis winding for phase re ...


7
William R Archer: Method and apparatus for sensing direct current of one polarity in a conductor and electronically commutated motor control responsive to sensed motor current. General Electric Company, Ralph E Krisher Jr, August 28, 1990: US04952853 (51 worldwide citation)

Apparatus and method for generating a sensing signal which is a function of a direct current flowing in a particular direction in a conductor. A core inductively coupled to the conductor is subject to negative magnetic saturation after a period of time as a result of a magnetic field generated by th ...


8
William R Archer: Electronic control circuits, electronically commutated motor systems, switching regulator power supplies, and methods. General Electric Company, Ralph E Krisher Jr, August 22, 1989: US04859921 (37 worldwide citation)

Electronic control circuit for use with electrical load powering apparatus having a load connection, a high voltage supply connection and a common, and with an electronic switch to switch the high voltage supply connection to the load connection. The electronic switch has an input and is responsive ...


9
William R Archer, Roger C Becerra, Brian L Beifus, Kenneth E Zick: Interface between programmable electronically commutated motor and personal computer and method of operation. General Electric Company, Ralph E Krisher Jr, December 5, 1995: US05473229 (34 worldwide citation)

A microcontroller with external memory interacts with a host computer or terminal via a fully isolated RS232 serial interface. An eight-bit D/A converter transforms signals generated digitally in the microcontroller. The low level analog signal at the D/A output is further amplified in a power ampli ...


10
William R Archer: Single phase motor drive. General Electric Company, Wayne O Traynham, Senniger Powers Leavitt & Roedel, January 12, 1999: US05859519 (34 worldwide citation)

A motor having a stationary assembly including a winding and a rotatable assembly in magnetic coupling relation to the stationary assembly. A bridge circuit for use in driving the motor has upper and lower power switches connected between the winding and the upper and lower rails, respectively, of a ...