| Patent Number |
Title Of Patent |
Date Issued |
| 6112575 |
Method and apparatus for vehicle exhaust gas pollutant mass flow measurement |
September 5, 2000 |
| A method and apparatus to provide a very compact and low power measurement of vehicular (automobile) exhaust emissions with results similar to those obtained with traditional CVS dynamometer lab emissions equipment. The sample dilution necessary for the analysis is performed by a compute |
| 6018224 |
Anti-clipping circuit for induction motor drive system |
January 25, 2000 |
| A feedback circuit prevents clipping of the inverter drive signals for a polyphase induction motor. The circuit senses the electromotive force (e.m.f.) of the motor and regulates the slip frequency as a function of the difference between the sensed motor e.m.f. and the DC power supply |
| 5642010 |
Rotor construction for alternating current induction motor |
June 24, 1997 |
| The present invention pertains to an improved rotor bar design and method of fabrication of asynchronous motors using such rotor bars. The rotor bar design employs "T"-shaped rotor bars that are interleaved around a magnetic core forming a rotor having a minimum amount of bonding int |
| 5355070 |
Induction motor drive stability control circuit |
October 11, 1994 |
| A circuit generates phase pole command signals for controlling operation of an induction motor. To minimize instabilities occurring within the motor, a stability control circuit generates a phase shift signal, which is input to reference signal generators to adjust phase reference signal |
| 5341075 |
Combined motor drive and battery recharge system |
August 23, 1994 |
| A combined battery recharge and motor drive system employs an essentially conventional polyphase pulse width modulated (PWM) inverter and a polyphase motor which may be reconnected to operate in a battery recharge mode. Single phase or three-phase AC power from an external source is |
