Krishnan Ramu
28Patents
8h-index
12Co-inventors
68Inventor score
Filing activity: Dec 2, 2003 → Jun 20, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7034422B2 | Radial-axial electromagnetic flux electric motor, coaxial electromagnetic flux electric motor, and rotor for same | Electricity | 39 | Expired |
| US7271564B2 | Method, apparatus, and system for drive control, power conversion, and start-up control in an SRM or PMBDCM drive system | Electricity | 23 | Expired |
| US7420308B2 | PMBDCM and two phase SRM motor, two phase SRM rotor and stator, and coil wrap for PMBDCM and SRM motors | Electricity | 13 | Expired |
| US7412339B2 | Method and apparatus for identifying an operational phase of a motor phase winding and controlling energization of the phase winding | Electricity | 12 | Expired |
| US8264182B2 | Motor power factor correction apparatus and method | Emerging Cross-Sectional Technologies | 12 | Active |
| US7134396B2 | System to generate and control levitation, propulsion and guidance of linear switched reluctance machines | Performing Operations; Transporting | 9 | Expired |
| US7015615B2 | Apparatus and method that prevent flux reversal in the stator back material of a two-phase SRM (TPSRM) | Chemistry; Metallurgy | 9 | Expired |
| US8080964B2 | Neural network and method for estimating regions of motor operation from information characterizing the motor | Electricity | 9 | Active |
| US7372232B2 | Apparatus for drive control, power conversion, and start-up control in a PMBDCM or two-phase SRM drive system | Electricity | 7 | Expired |
| US7852038B2 | Single switch controlled switched reluctance machine | Electricity | 7 | Active |
| US8716961B2 | Switched reluctance and PM brushless DC motor drive control for electric vehicle application | Emerging Cross-Sectional Technologies | 7 | Active |
| US8901798B2 | Switched reluctance machines with minimum stator core | Electricity | 7 | Active |
| US8981705B2 | PM brushless motor drive circuit topology and control | Electricity | 7 | Active |
| US8319456B2 | Method, controller, and power converter for controlling a single-switch based switched reluctance machine | Electricity | 6 | Active |
| US8618761B2 | Method for controlling motor operation using information characterizing regions of motor operation | Electricity | 5 | Active |
| US8754605B2 | Power factor correction circuits for switched reluctance machines | Emerging Cross-Sectional Technologies | 5 | Active |
| US9054567B2 | High power density SRMs | Emerging Cross-Sectional Technologies | 4 | Active |
| US9093943B2 | High power density switched reluctance machines with hybrid excitation | Emerging Cross-Sectional Technologies | 3 | Active |
| US8203302B2 | System and method for controlling four-quadrant operation of a switched reluctance motor drive through a single controllable switch | Electricity | 3 | Active |
| US8525450B2 | Power factor correction drive circuit topologies and control for switched reluctance machines | Electricity | 3 | Active |
| US8541920B2 | High density windings for a concentric wound electrical machine stator | Electricity | 2 | Active |
| US7579734B2 | Apparatus and method that prevent flux reversal in the stator back material of a two-phase SRM (TPSRM) | Chemistry; Metallurgy | 1 | Expired |
| US9312733B2 | High power density SRM | Emerging Cross-Sectional Technologies | 1 | Active |
| US8952591B2 | Rotor lamination shaping for minimum core loss in SRMs | Emerging Cross-Sectional Technologies | 1 | Active |
| US8624541B2 | System and method for controlling four-quadrant operation of a switched reluctance motor drive through a single controllable switch | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.