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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7288923 | Voltage-limited electric machine An electric alternator having a rotor, stator and at least one winding in the stator adapted to conduct a current, the machine also having and first and second magnetic circuits around different portions of the winding which may be configured relative to one another... | 10/30/2007 |
| 7218068 | Power source for re-circulation pump and method of controlling the same A variable-voltage variable-frequency power source for an electric motor that drives a re-circulation pump for a boiling water nuclear reactor. The power source has a semiconductor electric power converter and a speed controller for controlling the semiconductor ele... | 05/15/2007 |
| 7170262 | Variable frequency power system and method of use A variable frequency power system with a power source having a rotating output and a speed control to regulate rotational speed of the rotating output. A generator coupled to and driven by the rotating output of the power source, whereby the speed control of the pow... | 01/30/2007 |
| 7134261 | Hybrid type working machine In the working machine wherein the output of an engine generator is directly supplied to a motor for travel without using the intermediary of a battery, preventing the engine from slowing down. The generator G is directly connected to the motor 7 and there is... | 11/14/2006 |
| 6949898 | Hybrid type working machine The output of an engine driven generator G is directly supplied to a motor 7 for travel without the intermediary of a battery. The output capacity of each of the generator G and motor 7 is determined so that the maximum output of the generator G may su... | 09/27/2005 |
| 6781331 | Method and apparatus for regulating motor generator output A method and system of regulating an output voltage of a boiling water reactor nuclear reactor plant recirculation system motor generator are provided. The method includes sensing an alternator output voltage and transmitting an alternator output voltage signal to a... | 08/24/2004 |
| 6768277 | Gas turbine system and method for controlling the same In a gas turbine system having first power converter converting power system N AC voltage to DC voltage, second power converter converting the DC voltage into AC voltage, generator connected to second power converter's AC output and rotated by turbine and turbine co... | 07/27/2004 |
| 6687580 | Vehicle controller and vehicle control method A vehicle controller includes a plurality of driving power sources for transmitting torque to a wheel, and a starter for starting a first driving power source of the plurality of diving power sources. The first driving power source is stopped when a presc... | 02/03/2004 |
| 6583592 | Control apparatus for hybrid vehicle A control apparatus enhances charge and discharge performance of a main battery in a low temperature environment, extends the life of the main battery and improves the reliability of the whole system. The control apparatus is for a hybrid vehicle having a... | 06/24/2003 |
| 6456021 | Rotating variable frequency transformer with high voltage cables A system for transferring power between a first electrical system and a second electrical system comprises a rotary transformer (105) comprising a rotor (110) having rotor windings and a stator (112) having stator windings. The windings of at least one of... | 09/24/2002 |
| 6373206 | Motor drive control apparatus An electrical motor having a drive function and a power generating function is directly connected to an engine mounted on a vehicle. The vehicle has a starter connected to the engine. A motor control means for controlling the drive of the motor in coopera... | 04/16/2002 |
| 5767637 | Controller for turboal ternator 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... | 06/16/1998 |
| 5652485 | Fuzzy logic integrated electrical control to improve variable speed wind turbine efficiency and performance A control system utilizing fuzzy logic adaptive control to control the operation of a wind turbine driven electric power generator to control power generator speed and hence power frequency while maximizing the power output of the power generator. Wind tu... | 07/29/1997 |
| 4704571 | Arrangement for recovering power loss of an internal combustion engine An arrangement for recovering power loss of an internal combustion engine including a turbine, the driving power of which stems from a power loss of the internal combustion engine. The turbine is coupled to a generator, a winding of which feeds a d-c moto... | 11/03/1987 |
| 4442385 | Variable frequency drive for a motor-generator/alternator set A variable frequency drive for a motor-generator/alternator set which is used to supply electrical power to computer or data processing equipment. Power failures in commercially supplied power results in aberrations and erroneous computations in computers... | 04/10/1984 |
| 3953775 | Propulsion control system for electrically powered vehicles Propulsion control system for electrically powered vehicles, typically heavy duty off-road type work vehicles having electric motor driven wheels. In embodiment shown, power is supplied from direct current generator driven by internal combustion engine. M... | 04/27/1976 |
