Two Stator Motor Model Explanation
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Two Stator Motor Model Explanation

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This is a presentation, explaining the principle of one of my inventions (patent) - pan shape electrical motor with two stator parts, placed on the same plane....

This is a presentation, explaining the principle of one of my inventions (patent) - pan shape electrical motor with two stator parts, placed on the same plane.
Please, contact me for more details.

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Two Stator Motor Model Explanation Two Stator Motor Model Explanation Document Transcript

  • FIG.1 THERE IS THE MODEL OF TWO STATOR THREE PHASE ELECTRICAL MACHINE WITH CONDUCTIVE ROTOR. PHASES ON BOTH SIDES OF THE STATOR ARE CONNECTED IN SERIES AND GENERATE THE SAME MAGNETO MOTIVE FORCE. THE SAME MODEL I SUPPOSE, YOU HAVE IN YOUR ALTERNATOR. STATOR 1 PHASE U PHASE V PHASE W ROTOR (CONDUCTIVE FOR MAGNETIC FIELD) PHASE U PHASE V PHASE W STATOR 2 POSITIVE TERMINAL FIG.2. TO MAKE IT SIMPLE, I TOOK THE TIME MOMENT, WHEN CURRENT FLOWS THROUGH TWO PHASES - U AND V PHASE U CURRENT FLOW CURRENT PHASE V FLOW NEGATIVE TERMINAL
  • FIG.3 BROCKEN ARROWOS REPRESENT MAGNETIC FIELD FROM THE CURRENT, FLOWS ONLY THROUGH PHASE U STATOR 1 PHASE U PHASE V PHASE W ROTOR (CONDUCTIVE FOR MAGNETIC FIELD) PHASE U PHASE V PHASE W STATOR 2 THIS CHART REPRESENTS MAGNETO- MOTIVE FORCE DISTRIBUTION INSIDE THE WORKING GAP OF THE ELECTRICAL MACHINE WHEN 0 120 360 240 CURRENT FLOWS THROUGH PHASE U.
  • FIG.4 BROCKEN ARROWOS REPRESENT MAGNETIC FIELD FROM THE CURRENT, FLOWS ONLY THROUGH PHASE V STATOR 1 PHASE U PHASE V PHASE W ROTOR (CONDUCTIVE FOR MAGNETIC FIELD) PHASE U PHASE V PHASE W STATOR 2 THIS CHART REPRESENTS MAGNETO- MOTIVE FORCE DISTRIBUTION INSIDE THE WORKING GAP OF THE ELECTRICAL MACHINE WHEN 0 120 360 240 CURRENT FLOWS THROUGH PHASE V.
  • FIG.5. WE CAN SEE THAT COMBINED DISTRIBUTION OF MAGNETO-MOTIVE FORCE (OR MAGNETIC FIELD FROM THE CURRENT, FLOWING THOUGH PHASES U AND V) HAS ASYMMETRICAL SHAPE. IF WE USE FOURIER SERIES TO DESCRIBE THIS GRAPH, WE WILL SEE, THAT IT HAS NOT ONLY ODD HARMONICS, BUT ALSO EVEN HARMONICS. THIS HARMONICS DON'T PRODUCE ANY USEFUL TORQUE IN THREE PHASE SYSTEM, THEY INTERFERE WITH MAJOR HARMONICS AND CREATE PULSATION OF THE TORQUE AND POWER LOSSES. PHASE U 0 120 240 360 PHASE V 0 120 240 360 PHASE U+V 0 120 240 360
  • FIG.6. LET US SHIFT STATOR 2 ON 180 ELECTRICAL DEGREES AGAINST STATOR 1 STATOR 1 PHASE U PHASE V PHASE W ROTOR (CONDUCTIVE FOR MAGNETIC FIELD) SHIFT STATOR 2 ON 180 PHASE V PHASE U PHASE V ELECTRICAL DEGREES STATOR 2 PHASE U STATOR 1 MAGNETO- MOTIVE FORCE DISTRIBUTION 0 120 240 360 PHASE U STATOR 2 MAGNETO- MOTIVE 0 120 240 360 FORCE DISTRIBUTION COMBINED MAGNETO- MOTIVE FORCE FROM PHASES U ON BOTH 120 360 0 240 STATORS
  • FIG.7. ON THIS FIGURE THE MAGNETO-MOTIVE FORCE IS COMBINED FROM PHASES U AND V. THE RESULTING FIGURE IS SYMMETRICAL AND VERY CLOSE TO THE FIRST HARMONIC OF FOURIER SERIES. THERE ARE ONLY ODD HARMONIC NUMBERS PRESENT. THIS METHOD ALLOWS US TO ELIMINATE EVEN HARMONIC NUMBERS COMPLETELY. PHASE U 0 120 240 360 PHASE V (TO MAKE THIS GRAF WE USE THE SAME APPROACH , AS ABOVE FOR PHASE U, ONLY IT IS 0 120 240 360 SHIFTED 120 EL. DEGREES. PHASE U AND V 0 120 240 360