CA2819902A1 - Twin reactive drivers - Google Patents

Twin reactive drivers Download PDF

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Publication number
CA2819902A1
CA2819902A1 CA 2819902 CA2819902A CA2819902A1 CA 2819902 A1 CA2819902 A1 CA 2819902A1 CA 2819902 CA2819902 CA 2819902 CA 2819902 A CA2819902 A CA 2819902A CA 2819902 A1 CA2819902 A1 CA 2819902A1
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Canada
Prior art keywords
stator
face
rotor
magnetic flux
path
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Abandoned
Application number
CA 2819902
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French (fr)
Inventor
Leslie I. Szabo
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA 2819902 priority Critical patent/CA2819902A1/en
Publication of CA2819902A1 publication Critical patent/CA2819902A1/en
Abandoned legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

This invention relates to a method and an electro-mechanical device which may act as a motor. In particular, the invention relates to an improved and efficient driver. The method and device partially uses the reactive component of generated current to create the driving flux. Efficiency is improved by providing specific component features and characteristics of the geometry of the body of the invention together with the generated currents.

Description

TWIN REACTIVE DRIVERS
BACKGROUND OF THE INVENTION
This invention relates to an electro-mechanical device which may act as a motor. In particular, the invention relates to an improved and efficient driver.
Electro-mechanical devices which act as motors are known. It is always important however to improve upon the prior devices and, in particular, to improve the efficiency of those devices.
SUMMARY OF THE INVENTION
It is an object of this invention to provide an improved alternative type of electro-mechanical device, namely device which partially uses the reactive component of generated current to create the driving flux.
Accordingly, in one of its aspects, this invention is providing an electro-mechanical device 10 in Fig. 1 with magnetic path comprising:
(a) A magnetic stator means 11 in Fig. 1 comprising:
In Fig. 2 a non-continuous stator magnetic flux path extending from a stator pole portion 12 the rotor pole 13 through an air gap 14 and a stator pole face 15 having a plurality of excitation and armature coil conductors 16, and 17, respectively, extending substantially transversely across the stator pole faces;
(b) A rotor means 13 having a rotor face 18 and moving along a rotor movement path;
(c) A rotor/stator air gap 14 between the rotor face 18 and the stator face 19 when the rotor face and the stator face are adjacent each other;

(d) A continuous magnetic flux path 20 in Fig. 2 extending along the stator magnetic flux path, through the stator face, through the rotor/stator air gap 14, into or out of the rotor face 18, through the rotor means 13, which enables the magnetic flux path to be continuous;
(e) Magnetic flux generating means 21 for generating by electric current or providing, if permanent magnet, magnetic flux to pass through the continuous magnetic flux path 20;
(f) Wherein the rotor means is capable of cyclically moving relative to the stator means in a direction along a rotor movement path which is outside of the stator magnetic flux path, wherein:
(i) A first part of the rotor movement path is adjacent to the stator magnetic path, and a second part of the rotor movement path is not adjacent to the stator magnetic path such that magnetic flux, except magnetic flux leakage, cannot pass through the rotor face to or from the stator magnetic flux path;
(ii) Beginning at time zero in Fig. 2, until time critical, the rotor face 18 moves away from both a first portion of the stator face 19 and the stator magnetic flux path such that magnetic flux 20, except magnetic flux leakage, does not pass through the rotor face into or out of the stator magnetic flux path, then toward a second portion of the stator face, such that the rotor face is adjacent to and overlapping with the stator face such that operational magnetic flux passes through the rotor face into or out of the stator magnetic flux path in Fig. 2, as shown;
(iii) At time critical, the rotor face 18 moves into a position of maximal overlap, as shown in Fig. 2 with the stator face, and (iv) From time critical until time end of cycle in Fig. 2, the rotor face moves along at least a portion of the stator face and adjacent to the stator face in a direction of the stator magnetic path;
?
s (g) Wherein when the rotor face 18 and the stator face 19 move relative to and adjacent to each other an electric voltage and when the coil is closed a current having directions are developed in the plurality of conductors 17.
(h) Wherein when the plurality of conductors 17 is closed or under load, the direction of the armature current reverses at time critical when the rotor face moves into a position of maximal overlap with the stator face, without the magnetic flux reversing direction and without the rotor means reversing direction; and (i) Wherein an identical twin driver 10' is coupled by the shafts to driver 10 as shown in Fig.3 having its rotor poles rotated and keyed in the rotational path 1800 electric degrees relative to the poles of driver 10 and the armature conductors of both units 10 and 10' are connected to each other by a capacitor means 22, as shown in Fig.4;
(j) Wherein electric switches 23 and 23' of units 10 and 10', respectively in Fig.4 are timed and opening and closing the paths of currents 17A an 17'A' in such away to make the operation of capacitor 22 smooth and continuous, that is: charging and discharging, and (k) Wherein capacitor 22 in Fig.4 is chosen such to render reactive resistances 24 and 24' small or negligible and the phase angle between voltage 27 and current 17A in unit 10 and same for unit 10' respectively, near 900, thereby providing closely 100% reactive currents 17A and 17A' in units 10 and 10', respectively, and (I) Wherein ohmic resistances 25, 25' and 26 in Fig.4 are negligible small, and (m) Wherein poles of rotors in units 10 and 10', respectively, are 1800 electric degrees are rigidly keyed and rotated from each other in the rotational path and thus the flux 20 generated by the nearly completely reactive current 17A
drives the rotor 13 in unit 10 in the rotational path during the first half of the electric cycle, that is during from t=zero to T/2 and the nearly completely reactive current 17A' in unit 10' drives the rotor of this coupled unit during the second half of the electric cycle from t=T/2 to T, as demonstrated in the next sections.
Further aspects of the invention will become apparent upon reading the following detailed description and the drawings which illustrate the invention and one of the preferred embodiments together with the operation.
DESCRIPTION OF THE OPERATION OF TDR
For the rotating TRD Unit Fig. 5 shows the magnetic flux 20 on the time scale through the air gaps 14 of the Twin Unit 10 and 10', respectively and the corresponding voltage potential 27 and 27' as shown in Fig. 6;
Referring to Fig.7 it is an experimental fact, that the excited (magnetized) stator pole 12 drags rotor pole 13 in the rotational direction, as shown, up to maximum overlap between stator pole 12 and rotor pole 13, and thereafter the magnetized stator pole 12 is reversing its force and is dragging backword rotor pole 13.
The very purpose of the attached coupled Twin Unit is to partially eliminate such a dragging back action of the corresponding magnetised stator pole in Twin Unit 10';
The driving forces by fluxes acting on rotor 13 to propel it in the direction of the rotor movement path are created by the nearly 100% reactive currents 17A an 17A', respectively, in Fig.4; This will be demonstrated next for one of the twin units only, as it is repeated exactly the same way by the other twin unit 10' (a) It is well known by those who are practicing in the respective art, that the magnetic energy W(s) in the air gap 14 can be expressed at point "S" as follows:
W(S)= 13,2(s)182S , and the force at the same S point is:

(ii) F(s)= dW(s) d 13,2(s)182S]
ds ds 2110 Where:
(iii) Be is in Tesla, the resultant induction at point S in the air gap 82;
(iv) I is the length of the iron packet in the direction of the shaft, in metre [m];
(v) 52 is the air gap between stator and the rotor iron, in metre [m];
(vi) S is a point which travels in the rotational path of the rotor, in metre [m];
(vii) 1.1,0 is the magnetic permeability of air in the air gap: 1.10=
12.57107;
(viii) F(s) is force at S in Newton [N];
(b) Implementing the derivation as the function of S in (ii) of (a) above, we obtain:
13,2 (s)18 2 d13,2(s)18,S
(i) F(s)= + and We recognize the components of (b) above as:
13 2, (s)I6, (ii) = Fa (s) Due to change in the volume of the magnetic field in 21.1.0 the air gap at S, and (iii) ¨d13 *-152S = Fb (s) Due to change of the induction in the air gap at S;

ds 2 0 (c) When there is no alternating current component [A.C] in the excitation coil (for example using current generator excitation), and using the generated current in the armature coil to create the driving flux to drive the rotor, it can be shown that Fa(s) and Fb(s) can be expressed as follows:

(i) Fa(S) - Be2 (s)18 2 ,and 15S r Fb (S)= ¨2L2k*1:3a * sinqk * s ¨
Where:
(iii) Be(s) is the resultant induction at S, measured in Tesla, and (iv) B2a is the amplitude of the induction due to the armature current, measured in Tesla;
(v) Where k=
2p = Number of pole pairs (2p=4 in Fig.1);
r = Radius of the rotor in metre [m]
(vi) S= At a specific point: is the travelled distance by the rotor in metre [m], during t=0 to t= T;
(vii) 02 is the phase angle between the voltage potential and its corresponding armature current in the armature coil;
(d) In order to compute the mechanical performance in watts (Torque in Newton X mechanical angular speed) which can be taken off the shaft of the TRD Unit, the following steps are taken:
(i) Divide the distance S from t=0 to t= % T by, say 10; Thus 10 points or ordinates are created;
(ii) Compute the above Fa(s) and Fb(s) at each ordinate and then take the average and add them together; This will be the average force between t=0 and t= % T;
(iii) Multiply the obtained average force by the radius of the rotor to obtain the average Torque [in Newton metre]
(iv) Then multiply this average Nm by two(2) (due to using twin units) and by the mechanical angular speed 0.)m to obtain the mechanical (shaft) performance in watts of the TRD Unit, that is: for the Twin Unit.

TEST RESULTS OF A BUILT TRD UNIT CALLED "SLIS-01A"
In order to test and prove the applied mathematical model and the expected shaft performance, an actual TRD Unit was built with the following dimensions and other data as per unit 10 and unit 10':
(a) Bore: 200 mm (diameter of rotor + 262);
(b) Rotor diameter: 200-2x2.5= 195 mm;
(c) Air Gap: 52 = 2.5 mm;
(d) Length of laminated iron packet in the direction of shaft: 120mm/packet (10) (e) Number of poles of stator and rotor: 4 / each/ per packet;
(f) Number of turns of excitation coil: N1 =31/ stator pole;
(g) Number of turns of armature coil: N2 = 128/stator pole;
(h) Excitation D.C. current: 22 Ampere;
(j) Rotational speed: n= 3000/min;
(k) Effective armature current in N2 Coil: 8.07 Amp;
(I) Phase angle : c1)2= -90 , when CL= 12 mikro Farad;
(m) Used capacitor sizes connected in series in N2 armature coil: 12 mikro Farad, and 138 mikro Farad for a second test;
The actual results in summarized format:
(a) Fig.8 shows the computed armature current i2 in coil N2 as the function of time "t" to be: 12 = -2eff *
-k= 8.07*V2 = 11.3787 Ampere;
(b) In Fig. 8, it is also shown the value of i2 at the chosen 5 ordinates between t=0 and t= % T;
(c) The computed shaft power of the built TRD unit is: m ¨avarage* (Ornech= 11,820 Watt, from which:
(d) Mavarage= 11,820/ corneal = 11,820/ (n/9.55) = 11,820/(3000/9.55) =
37.63 Nm (e) The simplest and easiest way to check this torque out on the built unit is to feed into the ordinates of the excitation current I I (Amp) into N1 coil, the ordinates of i2 (Amp) into the armature coil N2 at selected say, 14 points between t=0 an t= % T, and measure the torque at these points, then take the average; Then repeat this for the other half of the Twin Unit, for unit 10', and add the two results together.
The graphs of actual measured torques in Newton metre at the 14 ordinates (points) are shown for units 10 and 10' in figures 9 and 10, respectively;
(f) The result of the test described above is: M
¨average (measured) = 36.80 Nm, which is very close to the computed number of 37.63 Nm in (d) above;
(g) Independent repeated test proved the results correct;
(h) Therefore, the used mathematical model is good and accepted for the TRD
units.
(i) It is important to note, that permanent magnets, such as samarium cobalt and others, (and not electro magnets) can be used to excite the TRD units;
Thus the inputted excitation power which is:
*RN =(22)2 *0.5E2 = 242 WATT / Unit, or2 * 242 = 484 WATT for the Twin Unit, can be omitted for this TRD; Thus further increasing its efficiency;
(j) Figures 12,13 and 14 show the scope pictures of the excitation current 21, the open coil voltage U (Volt) in Fig. 6, and U2 (Volt) in Fig. 11, when n=3000/min, 11= 22 DC(Amp) and CL = 12.77 mikro Farad, respectively;
(k) At the parameters given in (j) above, the inputed power of the coupled - driving motor is: 2,300 Watts for the TRD Unit;
(1) Thus, the TRD invention is highly efficient.

Claims (5)

1. An electro-mechanical device, comprising:
(a) Stator and rotor means with magnetic paths comprising:
.cndot. A non-continuous stator magnetic flux path to create a variable magnetic conductivity;
.cndot. A stator air gap extending from the stator face to the rotor face;
.cndot. A stator face having a plurality of conductors extending transversely across the stator face;

(b) A rotor means having a rotor with large surface and moving along a cylindrical or linear rotor movement path;
(c) Variable or constant rotor/stator air gap between the rotor face and the stator face when the rotor face and the stator face are adjacent each other;
(d) A continuous magnetic flux path extending along at least a portion of the stator magnetic flux path, through the stator face, through the rotor/stator air gap, into or out of the rotor face, through the rotor means, and through at least one permanent magnet or electro-magnet or combination of both, a magnetic flux connecting means which enables the magnetic flux path to be continuous;
(e) Permanent magnet or electro-magnet magnetic flux generating means for generating magnetic flux to pass through the continuous magnetic flux path;
(f) Wherein the rotor means is capable of cyclically or linearly moving relative to the stator means in a direction along a rotor movement path which is outside of the stator magnetic flux path, wherein:
(i) A first part of the rotor movement path is adjacent to the stator magnetic path, and a second part of the rotor movement path is not adjacent to the stator magnetic path such that magnetic flux, except magnetic flux leakage, cannot pass through the rotor face to or from the stator magnetic flux path;
(ii) Beginning at time zero until time critical, the rotor face moves away from both a first portion of the stator face and the stator magnetic flux path such that magnetic flux, except magnetic flux leakage, does not pass though the rotor face into or out of the stator magnetic flux path, then toward a second portion of the stator face, and then such that the rotor face is adjacent to and overlapping with the stator face such that operational magnetic flux passes through the rotor face into or out of the stator magnetic flux path;
(iii) At time critical, the rotor face move into a position of maximal overlap with the stator face; and (iv) From time critical until time end of cycle, the rotor face moves along at least a portion of the stator face and adjacent to the stator face in a direction of the stator magnetic path;
(g) Wherein when the rotor face and the stator face move relative to and adjacent to each other an electric voltage and when conductors are closed a current having directions are developed in the plurality of conductors;
(h) Wherein when the plurality of conductors is closed or under inductive and/or capacitive and/or ohmic load the direction of the current reverses at time critical when the rotor face moves into position of maximal overlap with the stator face, without the magnetic flux reversing direction and without the rotor means reversing direction; and (i) Wherein the continuous magnetic flux path is substantially planar, or biplanar;
2. An electro-magnetic device with unorthodox magnetic paths as defined in claim 2 wherein when the rotor face is not adjacent to the stator face, the second rotor face is not adjacent to the second stator face;
3. An electro-magnetic device as defined in claim 3 wherein when the rotor face is adjacent to the stator face, the second rotor face is adjacent to the second stator face;
4. An electro-magnetic device as defined in claim 2 wherein:
(a) The geometrically-magnetically-asymmetrical stator means comprises a second non-continuous stator magnetic flux path having a second stator air gap extending from the first portion of the second stator face to the second portion of the second stator face such that the second stator magnetic flux path is outside the rotor movement path and the stator magnetic flux path and the continuous magnetic flux path extends along at least a portion of the stator magnetic flux path;

(b) The second stator face has a second plurality of conductors extending substantially transversely across the second stator face;
(i) The first part of the rotor movement path is adjacent to the stator magnetic flux path and the second stator magnetic flux path, and the second part of the rotor movement path is not adjacent to either the stator magnetic flux path such that magnetic flux, except magnetic flux leakage, cannot pass through the rotor face to or from the stator magnetic flux path or through the second rotor face to or from the second stator magnetic flux path;
(ii) Beginning at time zero until time critical, the second rotor face moves away from both the first portion of the second stator face and the second stator magnetic flux path such that magnetic flux, except magnetic flux leakage , does not pass through the second rotor face into or out of the second stator magnetic flux path, then toward a second portion of the second stator face, and then such that the second rotor face is adjacent to and overlapping with the second stator face when the rotor face is adjacent to and overlapping with the stator face such that operational magnetic flux passes through the second rotor face into or out of the second stator magnetic flux path;
(iii) At time critical, the second rotor face moves into a position of maximal overlap with the second stator face while the rotor face is overlapping the stator face; and (iv) From time critical until time end of cycle, the second rotor face moves along at least a portion of the second stator face and adjacent to the second stator face in a direction of the second stator magnetic path while the rotor face is overlapping the stator face;
(c) Wherein when the second rotor face and the second stator face move relative to and adjacent to each other an second electric voltage and second current when conductors are closed having directions are developed in the second conductors; and (d) Wherein when the second conductors are closed or under inductive and/or capacitive and/or ohmic load, the direction of the second current reverses at time critical when the second rotor face moves into position of maximal overlap with the second stator face, without the magnetic flux reversing direction and without the rotor means reversing direction;
5. An electro-magnetic device with magnetic paths as defined in claim 4 wherein when the rotor face is not adjacent to the stator face, the second rotor face is not adjacent to the second stator face such that magnetic flux, except magnetic flux leakage, cannot pass through the rotor face to or from the stator magnetic flux path;
5. An electro-magnetic device as defined in claim 5 wherein when the rotor face is adjacent to the stator face, the second rotor face is adjacent to the second stator face such that magnetic flux can pass through the rotor face into the stator face and through the second stator face into the second rotor face;
7. An electro-magnetic device with flux path defined in claim 7 wherein time zero, time critical and time end of cycle for the second rotor face occur substantially simultaneously as time zero, time critical and time end of cycle for the rotor face;
8. An electro-magnetic device as defined in claim 7 wherein the rotor face and the second rotor face are substantially interchangeable;
9. An electro-magnetic device as defined in claim 8 wherein the rotor means comprises a plurality of rotor faces, each of which is substantially interchangeable with the rotor face and second rotor face such that each of the plurality of rotor faces successively interact with the stator face and second stator face;
10. An electro-magnetic device as defined in claim 9 further comprising a plurality of geometrically-magnetically-asymmetrical stator means, each of which is substantially interchangeable with the geometrically-magnetically-asymmetrical stator means;

A plurality of stator air gaps extending from the second stator face of each stator means to the stator face of an adjacent stator means; and Wherein the plurality of stator means are oriented around the rotor means so that the plurality of rotor faces can successively interact with the stator face and second stator face of each stator means;
11. An electro-magnetic device as defined in claim 10 further comprising a plurality of geometrically-magnetically stator means, each of which is substantially interchangeable with the geometrically-magnetically stator means;
A plurality of stator air gaps extending from the second stator face of each stator means to the stator face of an adjacent stator means; and Wherein the plurality of stator means are oriented around the rotor means so that the plurality of rotor faces can successively interact with the stator face and second stator face of each stator means;
12. An electro-magnetic device as defined in claim 1 wherein the stator means is linear;
13. An electro-magnetic device as defined in claim 10 wherein the stator means is linear;
14. An electro-magnetic device as defined in claim 12 wherein the stator path member extends from the second portion of the stator face to the second portion of the second stator face;
15. An electro-magnetic device as defined in claim 13 wherein the stator path member extends from the first portion of the stator face to the second portion of the second stator face;
16. An electro-magnetic device as defined in claim 14 wherein the rotor means is connected to an input/output shaft located concentrically within the rotor means and the rotor means moves relative to the stator means around the input/output shaft in a circular path; Each of the plurality of rotor faces is positioned at substantially the same distance from the input/output shaft; And the length of each rotor (and stator) face in the direction of the circular path is 180° for 2 p=4;
17. A substantially similar or an identical second Twin Unit as in claim 1 is mechanically coupled by the shaft to the first unit with the rotor poles of the second unit rotated 180 electric degrees (180°) and fixed to the shaft, and the armature conductors of the two units are connected to each other by energy storage means, (such as capacitors) through opening and closing switches for the currents;
18. An electro-magnetic device as defined in claim 17, the energy storage means (capacitors) and other circuit parameters and timing the opening and the closing of the switches for currents are selected to render the armature currents (which create the driving fluxes of the rotor poles) nearly 100 %
reactive currents, thereby very substantially decreasing or eliminating the torque requirement on the shaft of the unit therefore making this electro-mechanical driving device highly efficient.
CA 2819902 2013-06-06 2013-06-06 Twin reactive drivers Abandoned CA2819902A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2819902 CA2819902A1 (en) 2013-06-06 2013-06-06 Twin reactive drivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2819902 CA2819902A1 (en) 2013-06-06 2013-06-06 Twin reactive drivers

Publications (1)

Publication Number Publication Date
CA2819902A1 true CA2819902A1 (en) 2014-12-06

Family

ID=52011363

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2819902 Abandoned CA2819902A1 (en) 2013-06-06 2013-06-06 Twin reactive drivers

Country Status (1)

Country Link
CA (1) CA2819902A1 (en)

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