WO2003007459A1 - Machine electrique synchrone hybride - Google Patents
Machine electrique synchrone hybride Download PDFInfo
- Publication number
- WO2003007459A1 WO2003007459A1 PCT/JP2001/005980 JP0105980W WO03007459A1 WO 2003007459 A1 WO2003007459 A1 WO 2003007459A1 JP 0105980 W JP0105980 W JP 0105980W WO 03007459 A1 WO03007459 A1 WO 03007459A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric machine
- rotor
- ring
- motor
- synchronous electric
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/125—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets having an annular armature coil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
- H02K11/014—Shields associated with stationary parts, e.g. stator cores
- H02K11/0141—Shields associated with casings, enclosures or brackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
Definitions
- the present invention relates to a hybrid electric machine driven by a transverse magnetic flux. More specifically, the present invention is configured to minimize eddy current loss in a motor, and has an energy effect compared to a conventional motor having a similar structure.
- Hybrid electric machines are classified as synchronous electric machines, and their structure is similar to that of a stepping motor with a built-in permanent magnet that increases the magnetic field density of the air gap, but differs from that of a stepping motor. And usually a single frequency current is supplied.
- the hybrid electric machine driven by the transverse magnetic flux has a plurality of coils, and these coils are coaxial with the motor axis.
- the advantage is that energy efficiency is good due to low ohmic loss in the coaxial coil.
- a motor having such a structure is described in, for example, Europe! '11 Patent No. 0544420, and a single coil which is coaxial with the motor axis in each phase of the stay.
- the circular stay yoke array surrounding the stay overnight coil is magnetized simultaneously.
- this motor has a single permanent magnet in each phase of the rotor, which is also arranged coaxially with the motor axis, and has two salient poles formed on the inner and outer circumferences. Located between iron rings. The number of salient poles formed on the inner and outer circumferences Is the same as the number.
- the hybrid electric machine configured in this manner has a high weight-to-torque ratio and good energy efficiency. This is particularly advantageous in low-speed operation where other motors are inefficient.
- the coils of each phase are coaxial with respect to the motor axis, are arranged coaxially in the motor, and a current is induced by a diverging magnetic flux in the electrically connected portion.
- Such parts are the stator armature and the low armature (passive motor parts), as are the iron rings inside the mouth.
- a hybrid synchronous electric machine driven by a transverse magnetic flux has a rotor and a stay, and the rotor has a toothed iron ring. It is composed of a rotor assembly, and is characterized in that a transverse insulating gap is formed in the rotor assembly. Further, in the hybrid synchronous electric machine of the present invention, the mouth armature is provided with at least one heavy copper ring close to the motor active part. are doing.
- the high-speed synchronous electric machine of the present invention has: a rotor and a stay; and the rotor has a rotor assembly (13) having toothed iron rings (14, 15). At least one; the assembly is characterized by having at least one transverse insulating gap (22).
- the hybrid synchronous electric machine of the present invention has: a rotor, a stay, and a conductive ring (12); and the conductive ring (12) is opposed to the motor axis (5). It is characterized in that it is arranged coaxially and is located at a position close to the motor active area.
- the conductive ring (12) can be formed of copper.
- the conductive ring (12) can be formed as a part of the mouth-to-armature (11).
- toothed iron rings (14, 15) of the rotor assembly (13) are electrically insulated from the supporting conductive rings (12). Hope Good.
- the stay is constituted by at least one annular array (2), and the annular array (2) is constituted by a U-shaped stay yoke (3) arranged at intervals. be able to.
- the stay is composed of at least one annular array (2), and the annular array (2) is composed of closely arranged stay yokes (3b, 3c).
- the stay yoke can be composed of asymmetric iron parts (23b, 2b, 23c, 24c) of the same shape but arranged alternately in opposite directions. .
- the eddy current loss of the hybrid synchronous electric machine according to the present invention is small. The reason for this is that the eddy currents that occur in the toothed iron rings are blocked by the transverse insulation gaps in these iron rings. On the other hand, eddy currents generated in the motor passive components (low armature, stay armature, ball bearing, etc.) can be ignored. This is because all of the divergent magnetic flux outside the motor active area is counteracted by the current induced in the copper ring. Further, the motor according to the present invention is very compact, strong, and mechanically stable despite low eddy current loss. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a perspective view, partially in section, of a two-phase hybrid electric machine with transverse magnetic flux according to the present invention.
- FIGS. 2 (A) to 2 (C) are perspective views each showing a partly sectional view of the roving ring assembly in one phase (embodiments A, B and C) of the motor of FIG. It shows a narrow insulating gap and insulating screws.
- FIGS. 3 (A) and (B) show the waveforms of FIG. 1 (one phase, Example A).
- FIG. 2 is a perspective view partially showing an annular array of stay yokes in a cross section, and a side view of a stator yoke.
- FIGS. 4 (A) and 4 (B) are perspective views partially showing an annular array of stay yoke (one phase, embodiment B) in the motor of FIG. It is a side view.
- FIGS. 5A and 5B are a perspective view, partially in section, showing an annular array of stay yokes (one phase, embodiment C) in the motor of FIG. It is a side view of a yoke.
- FIG. 1 shows a first embodiment (Example A) of a two-phase hybrid electric machine driven by a transverse magnetic flux according to the present invention.
- An annular array 2 of U-shaped stay yokes 3 is fixed to both sides of the stay armature 1 of the electric machine of the present example, and the stator yokes 3 are the stator windings of the corresponding phase. Surrounds line 4. Each winding 4 is coaxial with the motor axis 5.
- FIG. 3 shows the stator yoke 3 on which the salient poles 6 and 7 are formed more accurately.
- the yoke may be a bulk iron, but it is desirable to use a laminated package as shown in Figs.
- the rotor armature 11 is supported by a steering armature 1 via a ball bearing 9, and a heavy copper ring 12 is fixed to the rotor armature 11.
- the mouth ring assembly 13 is fixed to both sides of the copper ring 12. As shown in FIG. 2 (A) (Example A), this assembly 13 is composed of two toothed rings 14 and 15 made of a ferromagnetic material and a magnetized disk 2 °.
- the rotor magnetic poles 16, 17, 17, 18 and 19 are formed at regular intervals on the toothed rings 14 and 15.
- the ferromagnetic toothed rings 14 and 15 can be a stacked package, similar to the yoke 3 (see FIG. 2 for simplicity and ease of understanding). In these figures, these thin plates are omitted.)
- the magnetized disk 20 is magnetized in the axial direction, and can generate a magnetic flux from the toothed ring 14 to the toothed ring 15 or a magnetic flux directed in the opposite direction.
- the toothed rings 14, 15 and the magnetized disk 20 can be integrated by means of a screw 21 as can be seen from FIG. 2 (A). The same screw can be used to fasten the mouth assembly 13 to the copper ring 12.
- the toothed rings 14 and 15 are electrically connected to the copper ring 12 that supports them. Such insulation can be achieved, for example, by forming a thin ceramic layer on the stem surface of the screw 21 and the surface of the copper ring 12. As shown in Fig. 2 (A), the toothed rings 14 and 15 have at least one narrow isolation gearing to prevent the circular eddy current from flowing freely. 2 2 is formed.
- the magnetized disk 20 has the same structure.
- the toothed rings 14 and 15 and the stay yoke 3 are in a magnetic coupling state, and in each phase, the number of stay yokes 3 is equal to the rotor magnetic poles 16, 17 and 18. , 19 equal to the number.
- the toothed rings 14, 15 in the assembly 13 of Example A have their poles 18, 19 shifted from each other by half the pole spacing. And so on. The same relationship holds for the inner poles 16 and 17.
- the toothed ring 14 is shifted with respect to the toothed ring 15, so that the Cover the evening magnetic pole 18.
- the direction of the current flowing through the winding 4 decreases as the magnetic flux density in the gap between the stay magnetic pole 6 and the mouth magnetic pole 17 of the toothed ring 15 decreases, and The magnetic field density between the stay magnetic pole 7 and the rotor magnetic pole 18 of the toothed ring 14 decreases.
- the stay magnetic pole 7 and the toothed ring 15 The direction in which the magnetic field density of the air gap between the low magnetic poles 19 increases. Due to such an instantaneous magnetic state, the magnetic pole attracts the rotor magnetic pole toward a position shifted by half the magnetic pole interval from the position at the time of the operation. As a result, in the final position at the time of this operation, the stator pole 6 matches the rotor pole 16 of the toothed ring 14, and the stay magnetic pole 7 turns to the rotor pole of the toothed ring 15. Matches 1 9 At this moment, the direction of the current in winding 4 reverses.
- Such components include the toothed rings 14 and 15 and the magnetized disk 20. These ring-shaped parts (14, 15, 20) are cut at least in one place by insulating gaps 22, and three rings 14, 1, 1 The circular current around 5, 20 is not generated by the induced voltage. This is shown in FIG. 2 (A) (Example A).
- the gap 22 can be filled with an electrically insulating adhesive material.
- rings 14, 15, and 20 are electrically insulated from supporting copper ring 12, so that induced current bypasses the insulating gearing through copper ring 12. None to do.
- the eddy current loss in the active components of the motor can be significantly reduced. This is particularly important at high speeds and high torques where the magnetic flux changes drastically.
- the eddy current loss in the toothed iron ring can be reduced to about 1/10 by the insulating gear tube 22 of each rotor assembly 13.
- the eddy current loss is a passive component of the motor, that is, the rotor 1, stator armature 1, and ball bearing 9.
- these components are motor support components, eddy currents cannot be reduced in the same way. That is, if an insulating gap is formed on the supporting component, the mechanical precision is reduced, and the compactness of the motor is also impaired.
- the heavy copper ring 12 is located outside the active region of the strong magnetic field and close to the active region. Therefore, this ring 12 does not affect the magnetic field in the active region, but has a large effect on the divergent magnetic field outside the active region.
- a circular AC current around 2 is induced.
- the induced AC current produces its own magnetic flux, which is coupled to the first divergent magnetic flux.
- the quantity Q defined by the following equation is sufficiently smaller than “1”, the first divergent AC flux and the induced AC The magnetic fluxes almost cancel each other out.
- electrical resistivity der materials used in-ring 1 2 is, if the copper values in motor evening operating temperature is about 2 X 1 0- 8 ⁇ m.
- ⁇ Circular frequency (s- 1 ) of the current in the motor coil, usually at the nominal speed of the motor.
- the low armature 11 may be extended to a region near the active region without using the copper ring 12. Also, in such a case, there is no other way to reduce the eddy currents in the passive components of the motor, so that the armatures 11 and 1 can be formed from materials with higher electrical resistance. Good
- the value Q is much smaller than "1". In such a case, the divergent magnetic flux is almost completely canceled. Also, the eddy current loss in the motor housing (steer armature) and the rotor armature is very small. The losses left in practice are those in the copper ring 12, but these losses are also much smaller than the omic losses in the motor coil (these two types). The ratio of the losses is of the order of Q.) Therefore, if Q is much smaller than "1", the losses in the copper ring will be lower than the omic losses in winding 4. Can be ignored. In addition, the eddy current losses in the low and stator armatures are much smaller than those in the copper ring 12 for small Q. Therefore, the total eddy current loss is very large in the armature and very small compared to the eddy current loss in the motor without the conductive ring 12.
- the ring 12 is an accessory part of the low armature 11, so for mechanical applications a small amount of pure copper (which is oxygen-removed and highly conductive) is used instead of too soft pure copper. Copper containing an alloy of the following can be used. In this way, it is very easy to sufficiently increase the mechanical rigidity without excessively increasing the specific resistance ⁇ .
- the problem of eddy current loss can be solved by the hybrid synchronous electric machine driven by the transverse magnetic flux according to the present invention.
- the rotor armature 11 has at least one heavy copper ring 12 arranged close to the active component, and the rotor ring 14, 15 , 20 are provided with at least one transverse insulating gap 22.
- the compactness of the morning and evening can be improved. That is, the toothed iron rings 14 and 15 with transverse insulation gaps 22 are more flexible than rings without such gaps, especially in laminated layers. This is the case for packages. Therefore, strong support is required for the mouth rings 14 and 15, which is easily realized by the heavy copper ring 12.
- FIGS. Configurations with such improvements are described as Examples B and C. In these embodiments, some modifications are made to the embodiment ⁇ ⁇ shown in FIG.
- Example A the U-shaped stay yokes 3 in the annular array 2 are separated from each other. Therefore, the embodiment In A, some additional parts (for example, parts made of plastic material) need to be inserted between the yokes 3 and properly separated.
- Example B such a plastic component is not required. This is because York 3b is not separated between themselves.
- the shape of the yoke 3b is more complicated.
- this yoke 3b is composed of a set of two parts 23b, 24b. These two parts 23b and 24b are identical, but as shown in Figure 4, the first part 23b is facing down and the second part 24b is With the upper side facing upwards.
- each yoke 3b is twice as wide as the yoke 3 of the embodiment A. Accordingly, the thickness of the yoke 3b in the radial direction can be reduced to half of the thickness in the embodiment A. This can be seen by comparing Figure 3 and Figure 4. Therefore, the size of the motor housing can be reduced, which leads to the compactness of the motor as well as the high-density mounting of the stay yoke 3b.
- a further advantage is that the assembly of the motor is easy, because in the embodiment B, there is no need to separate the stay yoke 3b.
- the stay yoke 3c is arranged so as to form the annular array 2 in close contact.
- Each yoke 3c consists of two parts 23c, 24c of the same shape, with the first part 23c facing upward and the second part 24c facing upward. ing.
- the motor can be made compact and the assembly can be facilitated.
- the toothed rings 14b, 15b in the assembly 13 are arranged such that their outer poles do not shift with respect to each other. The same applies to the inner magnetic poles 16 b and 17 b. Also, there is no shift between the magnetic poles 16b and 18b of the first toothed ring 14b. Similarly, there is no mutual shift between the magnetic poles 17b and 19b of the second toothed ring 15b.
- the relative positions of the opposing magnetic poles on the inner and outer perimeters of Rho are indicated by broken lines s.
- Example C the toothed rings 14c, 15c in assembly 13 have their outer poles 18c, 19c mutually displaced by half the pole spacing, as in Example A. It is arranged so that the foot will fit. The same applies to the inner magnetic poles 16c and 17c. However, there is no mutual shift between the magnetic poles 16c and 18c of the ring 14c, and the magnetic pole 17c of the second toothed ring 15c. , 19 c.
- Fig. 2 (C) the relative position of the opposing magnetic poles on the inner and outer perimeters of D—D is indicated by the broken line S.
- the hybrid electric machine driven by the transverse magnetic flux of the present invention has a mouth and a stay, and its rotor is provided with a toothed iron ring. However, at least one transverse insulation gap is formed there.
- the present invention also has a rotor, a stay, and a conductive ring; the conductive ring is arranged coaxially with respect to the motor axis. It is characterized in that it is located near the motor active area.
- a hybrid synchronous electric machine with a small eddy current loss can be realized. That is, eddy currents generated in the toothed iron rings are prevented by the transverse insulating gaps in these iron rings. Also, since all the divergent magnetic flux outside the motor active area is canceled out by the current induced in the copper ring, the motor passive components (rotor armature, stay armature, ball bearing ring, etc.) The eddy current generated at the time can be ignored.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/482,308 US7034425B2 (en) | 2001-07-09 | 2001-07-09 | Hybrid synchronous electric machine |
PCT/JP2001/005980 WO2003007459A1 (fr) | 2001-07-09 | 2001-07-09 | Machine electrique synchrone hybride |
EP09001533A EP2061140A3 (en) | 2001-07-09 | 2001-07-09 | Synchronous hybrid electric machine |
EP01947959A EP1416619B1 (en) | 2001-07-09 | 2001-07-09 | Hybrid synchronous electric machine |
SI200130997T SI1416619T1 (sl) | 2001-07-09 | 2001-07-09 | Hibridni sinhroni elektriäśni stroj |
JP2003513111A JP4773053B2 (ja) | 2001-07-09 | 2001-07-09 | ハイブリッド同期電気機械 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2001/005980 WO2003007459A1 (fr) | 2001-07-09 | 2001-07-09 | Machine electrique synchrone hybride |
Publications (1)
Publication Number | Publication Date |
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WO2003007459A1 true WO2003007459A1 (fr) | 2003-01-23 |
Family
ID=11737532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005980 WO2003007459A1 (fr) | 2001-07-09 | 2001-07-09 | Machine electrique synchrone hybride |
Country Status (5)
Country | Link |
---|---|
US (1) | US7034425B2 (ja) |
EP (2) | EP2061140A3 (ja) |
JP (1) | JP4773053B2 (ja) |
SI (1) | SI1416619T1 (ja) |
WO (1) | WO2003007459A1 (ja) |
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- 2001-07-09 JP JP2003513111A patent/JP4773053B2/ja not_active Expired - Lifetime
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US7868505B2 (en) | 2006-04-04 | 2011-01-11 | Toyota Jidosha Kabushiki Kaisha | Motor and electric power supply control apparatus for the motor |
JP2011188730A (ja) * | 2010-02-09 | 2011-09-22 | Fuji Electric Co Ltd | リングコイルモータ |
CN103780035A (zh) * | 2013-04-15 | 2014-05-07 | 王新 | 一种横向磁通相段式无刷双馈感应电机 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2003007459A1 (ja) | 2004-11-04 |
EP2061140A2 (en) | 2009-05-20 |
US7034425B2 (en) | 2006-04-25 |
EP1416619A4 (en) | 2008-02-27 |
EP1416619B1 (en) | 2011-06-08 |
SI1416619T1 (sl) | 2011-10-28 |
US20040207281A1 (en) | 2004-10-21 |
EP2061140A3 (en) | 2011-08-10 |
JP4773053B2 (ja) | 2011-09-14 |
EP1416619A1 (en) | 2004-05-06 |
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