Flux-reversal-free two-phase switched reluctance motor
This patent describes a two-phase switched reluctance motor (SRM) with a specific pole configuration that eliminates a common efficiency problem called flux reversal. In a standard two-phase SRM, when the motor switches between its two power phases, the magnetic flux in the stator's iron core reverses direction, generating heat and wasting energy through a phenomenon called iron core loss. By carefully selecting the number of stator and rotor poles and managing how current is distributed through the coils, this design ensures the magnetic flux only flows in one direction through the stator back material at all times. The result is a simpler, lighter, lower-loss electric motor that is easier and cheaper to manufacture than competing designs.
What you could build
A more efficient, low-cost two-phase switched reluctance motor for use in appliances, HVAC systems, or industrial drives; motor manufacturers and OEMs seeking to replace induction motors with lower-loss alternatives would be the primary buyers.
Who in Virginia should care
Defense and aerospace primes in Northern Virginia, plus industrial motor and power electronics suppliers serving the mid-Atlantic region, would have interest in efficient low-cost motor alternatives.
Readiness: Lab validated
Concept — described but not yet demonstrated. Lab validated — supported by experimental results in the patent. Prototype likely — the text describes a built, working embodiment.
Readiness is inferred from the patent text, not from a lab visit.
The record
- Inventors
- Krishnan Ramu, Savio Nimal Lobo
- Granted
- August 25, 2009
- Status
- Granted patent
- Patent number
- 7579734
Ready to talk?
Virginia Tech Intellectual Properties handles licensing for this technology.
Prosim summaries are generated from public patent text and are not legal advice.