| Patent Number |
Title Of Patent |
Date Issued |
| 6262505 |
Flywheel power supply having axial magnetic bearing for frictionless rotation |
July 17, 2001 |
| A power supply device for providing uninterrupted power for a period of time is disclosed. The power supply device has a controller and a flywheel device. The flywheel device has a housing that contains a flywheel rotor and a motor/generator rotor. The flywheel rotor and the motor/genera |
| 5925993 |
Power control architecture for a hybrid power source |
July 20, 1999 |
| A hybrid powertrain assembly includes a voltage bus which is operable using a predetermined voltage level within a predetermined voltage range, a generator operatively connected to the voltage bus for generating power and bilaterally transferring the power with the voltage bus independen |
| 5821651 |
Flywheel controller |
October 13, 1998 |
| A flywheel controller for commutating a stator of a flywheel is disclosed wherein the flywheel controller includes a sensing unit to sense the position of a rotor and for creating a rotational signal, a control unit operatively connecting to the sensing unit for creating a command signal |
| 5804724 |
Rotor speed estimator |
September 8, 1998 |
| A method for accurately estimating the rotational speed of a machine includes the steps of initializing a counter, measuring a position of the machine, incrementing the counter, waiting for a position update, measuring a next position of the machine, calculating a difference between |
| 5767637 |
Controller for turboal ternator |
June 16, 1998 |
| A speed controller for a generator having a rotor includes a speed control input port for receiving a speed command signal, a proportional gain stage electrically connected to said speed control input port for amplifying the speed command signal to create an amplified signal, a turbine s |
| 5694017 |
Time delay compressed synchronous frame controller |
December 2, 1997 |
| A time delay compensated synchronous reference frame controller for a drive motor having a rotor and using an alternating current having a phase angle includes a low pass filter electrically connected to the drive motor for eliminating high frequency components of the alternating current |
| 5627758 |
Vector control board for an electric vehicle propulsion system motor controller |
May 6, 1997 |
| A vector control board for an electric vehicle propulsion system motor controller comprising a microcontroller for generating torque requests, a digital signal processor for receiving the torque requests from the microcontroller and for generating phase voltage signals in accordance |
| 5510725 |
Method and apparatus for testing a power bridge for an electric vehicle propulsion system |
April 23, 1996 |
| A method for testing a power bridge for an electric vehicle propulsion system, the power bridge including a switching circuit having first and second switching elements operable between "on" and "off" states. The method comprises the steps of selectively switching the first and second |
| 5506484 |
Digital pulse width modulator with integrated test and control |
April 9, 1996 |
| A pulse width modulator (PWM) circuit for generating pulses to enable a driver control unit to drive a pair of switching circuits for an electric motor including an input section for receiving an N bit digitized input signal to be modulated and a PWM counter for continuously counting up |
| 5475581 |
Waveform flat-topping unit |
December 12, 1995 |
| A waveform flat-topping unit includes a signal generator for producing first, second and third reference signals and a normalizing unit for normalizing the first reference signal. A waveform generator produces a third harmonic waveform of the normalized first reference signal. A comp |
