| 4589050 |
Method and apparatus for the protection of a thyristor power conversion system |
Loyal N. Stallard |
1986-05-13 |
| 4451770 |
Method and apparatus for determining the resistance of an AC motor stator |
Fred Henry Boettner, Loren H. Walker |
1984-05-29 |
| 4449088 |
Commutation failure correction scheme for a controlled current inverter |
John D. D'Atre, Loren H. Walker |
1984-05-15 |
| 4441064 |
Twelve-pulse operation of a controlled current inverter motor drive |
Loren H. Walker |
1984-04-03 |
| 4366427 |
Protective method and apparatus for a controlled current inverter and motor control system |
Loren H. Walker |
1982-12-28 |
| 4364007 |
Unintentional impedance detection system |
Willard B. Jarvinen, Loren H. Walker |
1982-12-14 |
| 4314190 |
Controlled current inverter with angle command limit |
Loren H. Walker |
1982-02-02 |
| 4311951 |
Apparatus and method for high slip operation of an AC electric motor at substantially zero rotation and substantially zero torque |
Loren H. Walker |
1982-01-19 |
| 4302713 |
Fixed gating sequence apparatus and method for an inverter |
Loren H. Walker |
1981-11-24 |
| 4295086 |
Method and apparatus for dynamic braking in a motor control system |
Paul M. Espelage, Loren H. Walker |
1981-10-13 |
| 4287463 |
Zero rotation and zero torque detector and method for an AC electric motor drive |
Loren H. Walker |
1981-09-01 |
| 4281276 |
Dual mode AC motor drive system |
Loren H. Walker |
1981-07-28 |
| 4280085 |
Apparatus and method for providing a signal proportional to flux in an AC motor for control of motor drive current |
Loren H. Walker |
1981-07-21 |
| 4274042 |
AC Motor drive system having clamped command error signal |
Loren H. Walker |
1981-06-16 |
| 4270078 |
Method and apparatus for a variable frequency inverter system having commutation fault detection and correction capabilities |
Loren H. Walker |
1981-05-26 |
| 4258416 |
Inverter power conversion system having improved control scheme |
Loren H. Walker |
1981-03-24 |
| 4251763 |
Commutating capacitor charge detection circuit and method |
Loren H. Walker |
1981-02-17 |
| 4247890 |
Reversible inverter system having improved control scheme |
Loren H. Walker |
1981-01-27 |
| 4237531 |
Controlled current inverter system having semiconductor overvoltage protection |
Loren H. Walker |
1980-12-02 |
| 4183081 |
Inverter system including commutation failure prevention scheme |
Loren H. Walker |
1980-01-08 |
