WO2003087728A1 - Capteur d'angle de rotation et machine electrique rotative comportant ce capteur - Google Patents
Capteur d'angle de rotation et machine electrique rotative comportant ce capteur Download PDFInfo
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- WO2003087728A1 WO2003087728A1 PCT/JP2003/004779 JP0304779W WO03087728A1 WO 2003087728 A1 WO2003087728 A1 WO 2003087728A1 JP 0304779 W JP0304779 W JP 0304779W WO 03087728 A1 WO03087728 A1 WO 03087728A1
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- winding
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- rotation angle
- teeth
- stator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
- G01D5/2046—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by a movable ferromagnetic element, e.g. a core
Definitions
- the present invention relates to a rotation angle detection device and a rotating electric machine using the same.
- rotors are considered to be simple, inexpensive, and able to withstand power and high-temperature environments, compared to expensive optical encoders with limited operating temperature environments and complicated structures.
- a rotation angle detection device that utilizes the change in the permeance of the gap between the motor and the stator has been devised.
- Japanese Patent Publication No. Sho 62-584445 discloses an example of a rotation angle detecting device having a two-phase excitation winding and a one-phase output winding.
- Japanese Patent Application Laid-Open No. Sho 491-1124508 discloses an example having a one-phase excitation winding and a two-phase output winding.
- No. 1,824,933 discloses an example in which windings are intensively wound around teeth of a stator and the number of windings is changed in a sine wave shape.
- FIGS. 73 and 74 show an example of the configuration of a conventional rotation angle detection device.
- FIG. 73 shows an example in which the number of stator teeth is 4 and the number of teeth of the stator is 4 similar to that disclosed in Japanese Patent Application Laid-Open No. 49-128508, as a conventional example.
- FIG. 74 shows an example in which the number of teeth of the stator is 16 and the shaft angle is 4. In these figures, 1
- the number of teeth increases in proportion to the increase of the shaft angle. For example, if the shaft double angle becomes 4, the configuration shown in Fig. 74 will be obtained, and the number of teeth will reach 16 and the number of teeth will increase. It can be said that the configuration is not suitable for mass production because the line workability is reduced.
- the above conventional example has the following problems. As described above, when the winding structure is as disclosed in Japanese Patent Publication No. 62-584445 and Japanese Patent Application Laid-Open No. 491-2124, the shaft double angle increases as described above. In this case, the number of teeth of the stator also increases proportionally, and the winding property and workability deteriorate.
- the winding has a large number of phases, one phase of output and three phases of excitation.
- the power supply of the device becomes expensive.
- the present invention has been made in order to solve such a problem, and an object of the present invention is to provide a rotation angle detecting device that can be easily manufactured and a rotating electric machine using the same. Disclosure of the invention
- the present invention relates to a rotation angle detection device comprising a stator provided with a one-phase excitation winding and a two-phase output winding, and a rotor having salient poles.
- the windings are wound around a plurality of teeth of the stator.
- the number of turns of each of the two-phase output windings is a predetermined m-phase winding (m is an integer of 3 or more). ) Using the m-phase It is obtained by converting the number of turns of a winding into two phases.
- the number of turns of each of the two-phase output windings is determined by using a predefined m-phase winding (m is an integer of 3 or more). Since the number of turns is obtained by converting the number of turns of the wire into two phases, the number of phases is reduced from m-phase to two phases, so that the structure is simple and the manufacturing process is easy.
- FIG. 1 is a configuration diagram showing a configuration of a rotation angle detection device according to a first embodiment of the present invention.
- FIG. 2 is a vector diagram for the primary magnetic flux in space in the rotation angle detecting device according to Embodiment 1 of the present invention.
- FIG. 3 is a vector diagram for the ninth spatial magnetic flux in the rotation angle detecting device according to Embodiment 1 of the present invention.
- FIG. 4 is a vector diagram of a fifth-order magnetic flux in the space in the rotation angle detection device according to Embodiment 1 of the present invention.
- FIG. 5 is an explanatory diagram showing, in a table form, an example of a five-phase winding in the rotation angle detecting device according to the first embodiment of the present invention.
- FIG. 6 is an explanatory diagram showing, in a table form, an example of the winding after the five-phase to two-phase conversion in the rotation angle detecting device according to the first embodiment of the present invention.
- FIG. 7 is an explanatory diagram showing, in a table form, an example of a specific winding (when a decimal number is allowed in the number of turns) in the rotation angle detecting device according to the first embodiment of the present invention.
- FIG. 8 is an explanatory diagram showing, in a table form, an example of a specific winding (when the number of turns is an integer) in the rotation angle detecting device according to the first embodiment of the present invention.
- FIG. 9 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (for the winding specification in FIG. 7) in the rotation angle detecting device according to the first embodiment of the present invention.
- FIG. 10 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (in the case of the winding specification in FIG. 8) in the rotation angle detection device according to the first embodiment of the present invention.
- FIG. 11 shows a configuration of a rotation angle detection device according to Embodiment 2 of the present invention.
- FIG. 12 is a vector diagram with respect to a primary magnetic flux in space in the rotation angle detecting device according to Embodiment 2 of the present invention.
- FIG. 13 is a vector diagram for a seventh-order magnetic flux in the space in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 14 is a vector diagram for a spatial third-order magnetic flux in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 15 is an explanatory diagram showing an example of a three-phase winding in a rotation angle detection device according to Embodiment 2 of the present invention in a table format.
- FIG. 16 is an explanatory diagram showing, in a table form, an example of a winding after three-phase to two-phase conversion in the rotation angle detection device according to the second embodiment of the present invention.
- FIG. 17 is an explanatory diagram showing, in a table form, an example of a specific winding (when the number of turns is allowed to be a decimal) in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 18 is an explanatory diagram showing, in the form of a table, an example of a specific winding (when the number of turns is an integer) in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 19 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (for the winding specification in FIG. 17) in the rotation angle detection device according to the second embodiment of the present invention.
- FIG. 20 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (in the case of the winding specification in FIG. 18) in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 21 is a configuration diagram showing a modification of the configuration of the rotation angle detection device according to Embodiment 2 of the present invention.
- FIG. 22 is an explanatory diagram showing, in a table form, an example of a double shaft angle of 2 and a number of slots of 9 in the rotation angle detecting device (FIG. 21) according to Embodiment 2 of the present invention.
- FIG. 23 is an explanatory diagram showing, in the form of a table, an example of a winding after three-phase to two-phase conversion in the rotation angle detecting device (FIG. 21) according to the second embodiment of the present invention.
- FIG. 24 is an explanatory diagram showing, in a table form, an example of a specific winding (when a decimal number is allowed in the number of turns) in the rotation angle detecting device (FIG. 21) according to the second embodiment of the present invention.
- FIG. 25 is an explanatory diagram showing an example of a specific winding (when the number of turns is an integer) in the rotation angle detecting device (FIG. 21) according to Embodiment 2 of the present invention in a table format.
- FIG. 26 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (in the case of the winding specification in FIG. 24) in the rotation angle detection device according to the second embodiment of the present invention.
- FIG. 24 is an explanatory diagram showing, in a table form, an example of a specific winding (when a decimal number is allowed in the number of turns) in the rotation angle detecting device (FIG. 21) according to the second embodiment of the present invention.
- FIG. 25 is an explan
- FIG. 27 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms (for the winding specification of FIG. 25) in the rotation angle detecting device according to the second embodiment of the present invention.
- FIG. 28 is a configuration diagram showing a configuration of a rotation angle detection device according to Embodiment 3 of the present invention.
- FIG. 29 is an explanatory diagram showing, in a table form, an example of a three-phase winding in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 30 is an explanatory diagram showing, in a table form, an example of windings after three-phase to two-phase conversion in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 31 is an explanatory diagram showing, in a table form, an example of a specific winding in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 32 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms in the rotation angle detection device according to the third embodiment of the present invention.
- FIG. 33 is a configuration diagram showing a modification of the configuration of the rotation angle detection device according to Embodiment 3 of the present invention.
- FIG. 34 is an explanatory diagram showing, in a table form, an example of a three-phase winding in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 35 is an explanatory diagram showing, in a table form, an example of windings after three-phase to two-phase conversion in the rotation angle detection device according to the third embodiment of the present invention.
- FIG. 36 is an explanatory diagram showing an example of a specific winding in a table format in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 37 is an explanatory diagram showing a two-phase output voltage waveform in a rough format in the rotation angle detecting device according to the third embodiment of the present invention.
- FIG. 38 is a configuration diagram showing a configuration of a rotation angle detection device according to Embodiment 4 of the present invention.
- FIG. 39 is an explanatory diagram showing, in a table form, an example of a three-phase winding in the rotation angle detecting device according to the fourth embodiment of the present invention.
- FIG. 40 shows three phases and two phases in a rotation angle detection device according to Embodiment 4 of the present invention. It is explanatory drawing which showed an example of the winding after conversion in table format.
- FIG. 41 is an explanatory diagram showing, in a table form, an example of a specific winding in the rotation angle detecting device according to the fourth embodiment of the present invention.
- FIG. 42 is an explanatory diagram showing a two-phase output voltage waveform in a rotation angle detection device according to Embodiment 4 of the present invention in a graph format.
- FIG. 43 is a configuration diagram showing a configuration of a rotation angle detection device according to Embodiment 5 of the present invention.
- FIG. 44 is an explanatory diagram showing, in a table form, an example of a three-phase winding in the rotation angle detection device according to the fifth embodiment of the present invention.
- FIG. 45 is an explanatory diagram showing, in a table form, an example of a winding after the three-phase to two-phase conversion in the rotation angle detection device according to the fifth embodiment of the present invention.
- FIG. 46 is an explanatory diagram showing an example of a specific winding in a table format in the rotation angle detecting device according to the fifth embodiment of the present invention.
- FIG. 47 is an explanatory diagram showing a two-phase output voltage waveform in a rotation angle detection device according to Embodiment 5 of the present invention in a graph format.
- FIG. 48 is a configuration diagram showing a modification of the configuration of the rotation angle detection device according to Embodiment 5 of the present invention.
- FIG. 49 is an explanatory diagram showing, in a table form, an example of a three-phase winding in the rotation angle detecting device (FIG. 48) according to Embodiment 5 of the present invention.
- FIG. 50 is an explanatory diagram showing, in a table form, an example of a winding after three-phase to two-phase conversion in the rotation angle detection device (FIG. 48) according to Embodiment 5 of the present invention.
- FIG. 51 is an explanatory diagram showing, in the form of a table, an example of a specific winding in the rotation angle detecting device (FIG. 48) according to Embodiment 5 of the present invention.
- FIG. 52 is an explanatory diagram showing, in a graph form, two-phase output voltage waveforms in the rotation angle detection device (FIG. 48) according to Embodiment 5 of the present invention.
- FIG. 53 is an explanatory diagram showing an example in which a magnetic flux of the same order as the shaft multiple angle is generated in the rotation angle detecting device according to the sixth embodiment of the present invention.
- FIG. 54 is a vector diagram for a spatial fourth-order magnetic flux in the rotation angle detecting device according to the sixth embodiment of the present invention.
- FIG. 55 is an explanatory diagram showing, in a table form, an example of a three-phase winding (an example of a winding that does not pick up a magnetic flux of the same order as the shaft multiple angle) in the rotation angle detecting device according to the sixth embodiment of the present invention. is there.
- FIG. 56 is a table showing an example of a winding (an example of a winding that does not pick up a magnetic flux of the same order as the shaft multiple angle) after the three-phase to two-phase conversion in the rotation angle detecting device according to the sixth embodiment of the present invention.
- FIG. 56 is a table showing an example of a winding (an example of a winding that does not pick up a magnetic flux of the same order as the shaft multiple angle) after the three-phase to two-phase conversion in the rotation angle detecting device according to the sixth embodiment of the present invention.
- FIG. 57 is an explanatory diagram showing, in a table form, an example of a specific winding (an example of a winding that does not pick up a magnetic flux of the same order as the shaft multiple angle) in the rotation angle detecting device according to the sixth embodiment of the present invention. It is.
- FIG. 58 is an explanatory diagram showing a two-phase output voltage waveform in a rotation angle detection device according to Embodiment 6 of the present invention in a graph format.
- FIG. 59 is a configuration diagram showing a configuration of a rotation angle detection device according to Embodiment 8 of the present invention.
- FIG. 60 is a vector diagram for a secondary magnetic flux in space in the rotation angle detection device according to Embodiment 8 of the present invention.
- FIG. 61 is a vector diagram for a fourth-order magnetic flux in the space in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 62 is an explanatory diagram showing, in a table form, three-phase windings (No. 1) in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 63 is an explanatory diagram showing, in a table form, three-phase windings (No. 2) in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 64 is an explanatory diagram showing, in a table form, three-phase windings (No. 3) in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 65 is an explanatory diagram showing an example (part 1) of a winding after three-phase to two-phase conversion in the rotation angle detection device according to the eighth embodiment of the present invention in a table format.
- FIG. 66 is an explanatory diagram showing, in a table form, an example (part 2) of a winding after three-to-two phase conversion in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 67 is an explanatory diagram showing, in a tabular form, an example (part 3) of a winding after three-to-two phase conversion in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 68 is an explanatory diagram showing, in a table form, an example (part 1) of a specific winding in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 69 is an explanatory diagram showing, in a table form, an example (part 2) of a specific winding in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 70 is an explanatory diagram showing, in a table form, an example (part 3) of a specific winding in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 71 is an explanatory diagram showing, in a graph form, a change in a detected position error depending on the presence or absence of eccentricity in the rotation angle detecting device according to the eighth embodiment of the present invention.
- FIG. 72 is a configuration diagram showing a configuration of a ninth embodiment in which the rotation angle detection devices according to the first to eighth embodiments of the present invention are applied to a generator having a claw-shaped field core.
- FIG. 73 is a configuration diagram showing an example of a configuration of a conventional rotation angle detection device.
- FIG. 74 is a configuration diagram showing another example of the configuration of the conventional rotation angle detection device.
- the rotation angle detecting device can be configured by reducing the number of teeth as compared with the above-described conventional example even when the shaft double angle is large. The configuration will be described below.
- FIG. 1 shows a rotation angle detecting device according to Embodiment 1 of the present invention in which the shaft double angle is 4 and the number of teeth of the stator is 10.
- 1 is a stator
- 2 is a rotor
- 3 is 10 teeth provided on the stator
- 4 is an iron core of the stator
- 5 is a winding wound around the teeth 3
- 6 Denotes an iron core of the rotor 2
- 7 denotes four salient poles provided on the iron core 6
- 10 denotes a rotation angle detecting device.
- stator 1 has 10 tees. It is composed of an iron core 4 having a coil 3, a one-phase excitation winding 5, and a two-phase output winding (not shown).
- the rotor 2 is constituted by an iron core 6 having four salient poles 7 so as to function as a rotation angle detecting device 10 having a double shaft angle 4 and is rotatable with respect to the stator 1.
- the excitation winding 5 is intensively wound around each of the teeth 3 having the tooth numbers 1 to 10. Moreover, it is wound so that the polarity may be reversed between adjacent teeth 3. That is, the winding is formed such that 10 magnetic poles can be formed. At this time, consider how to wind the output winding. In order to function as a rotation angle detector, the magnetic flux generated in the air gap
- the 1st order in the space is the order whose mechanical angle is 360 degrees as one cycle.
- the magnetic flux of the number of pole pairs of the excitation and its integral multiple of the space order must not be picked up, the conditions necessary for the two-phase output winding to function as the rotation angle detector can be summarized.
- Phase 2-phase windings of the cos output
- Figures 2 and 3 show the phases of the windings in which the primary and ninth-order magnetic fluxes are wound around each tooth.
- the number of each vector indicates the tooth number, and indicates the phase of the magnetic flux linking the winding wound around each tooth number. Assume that the phase is counterclockwise. From the vector diagram, winding is applied to teeth Nos. 1, 5 and 7, and the polarity of teeth Nos. 5 and 7 is changed to tooth 1 By reversing that of, we can pick up both magnetic flux of the 1st and 9th order in space.
- the windings deviated from this winding by an electrical angle of 7 2 degrees are composed of the remaining 4 phases, the primary and ninth magnetic flux in the space to be established as a rotation angle detection device will be picked up, and the electrical angle 7 Five-phase windings can be formed by two degrees each (however, the electrical angle is the angle obtained by multiplying the mechanical angle by the multiple of the axis). That is, the winding specification is as shown in the table of Fig.5. Here, the number of turns is represented by ⁇ 1.0 for standardization, and the difference in sign indicates the difference in polarity. Also, it indicates that no winding is applied at the position of 0.0.
- ⁇ is an arbitrary angle.
- the magnetic flux linked to the winding is also converted to the five-phase to two-phase.
- the condition (2) is satisfied by the five-phase to two-phase conversion. This is because, according to the vector diagram for the fifth-order magnetic flux in the space (Fig. 4), the phase is the same in the five-phase winding, and in this case, it is clear that the winding is canceled by Eq. (1). Therefore, the condition (2) is satisfied in the five-phase to two-phase conversion, and it can be seen that the two-phase output winding has a winding specification functioning as a rotation angle detecting device. Therefore, Fig.
- FIGS. 7 and 8 show the actual number of turns determined based on FIG.
- the winding number in FIG. 6 shows a value obtained by multiplying the excitation winding by 50 and the output winding by 100.
- Figure 7 shows the case where the number of turns is allowed to be a decimal number (ideal case).
- Figure 8 is rounded to the nearest decimal point.
- the winding specification is shown in Fig. 7 and Fig. 8, and how the voltage appearing in the two-phase output winding changes when the excitation winding is excited by AC current depends on the rotor position. Shown in the graph of 10.
- 20 is a single-phase winding
- 21 is a j3-phase winding.
- the horizontal axis shows the position of the rotor in mechanical angle
- the vertical axis shows the voltage generated in the output winding.
- the negative sign of the voltage indicates that the phase is inverted with respect to the current of the exciting winding.
- the voltage was a sinusoidal waveform and the electrical angle was shifted 90 degrees from each other, so that it was confirmed that the device operated as a rotation angle detector.
- the output winding is virtually defined as a five-phase winding, and then the two-phase output winding is obtained by five-phase to two-phase conversion.
- the rotation angle detection device With such a configuration, the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the number of the stator teeth is 16; however, according to the present invention, the number of the teeth is 10; In other words, even if the shaft angle multiplication is large, the number of teeth of the stator can be reduced as compared with the conventional example to configure the rotation angle detecting device, so that there is an effect that winding property and workability are good and mass productivity is excellent.
- the number of turns was changed in a sine wave shape. In this case, there is a tooth that applies only a small number of turns, and an automatic winding winding machine that requires time for the tooth is required. Although it was necessary to position the nozzle, there was a problem that the winding efficiency was reduced. However, in the present invention, as is apparent from FIGS. There is also an effect that the winding work efficiency can be improved because there are a plurality of windings.
- an output winding that operates as a rotation angle detection device can also be obtained by converting m-phase (m is an integer of 3 or more) into two-phase.
- m-phase to 2-phase conversion may be defined as follows. N ⁇ k ⁇ cosir + ⁇ - ⁇ whil (2)
- ⁇ is an arbitrary constant
- k is an arbitrary non-zero constant
- the subscript i indicates the number of the teeth
- / 3 is the two-phase winding after conversion.
- n indicates the n-th phase before the conversion. That is, N ai and Nfji represent the a-phase in the i-th tooth,] the number of turns of the three-phase winding, and N ni represents the number of turns of the n-th winding of the ⁇ -th tooth. Needless to say, the same effect can be obtained with a winding formed by converting the m-phase winding into two phases.
- the number of turns of each tooth of the rotation angle detecting device in the present invention does not need to exactly match the number of turns determined by m-phase to two-phase conversion.
- the device operates as a rotation angle detecting device without any rounding after the decimal point.
- the sine wave shown in FIG. It goes without saying that it operates as a rotation angle detection device.
- Fig. 11 shows a rotation angle detector with a shaft double angle of 4 and 9 teeth.
- 1 is a stator
- 2 is a rotor
- 3 is 9 teeth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- Reference numeral 6 denotes an iron core of the rotor 2
- reference numeral 7 denotes four salient poles provided on the iron core 6
- reference numeral 10 denotes a rotation angle detecting device.
- the stator 1 has an iron core 4 having nine teeth 3, a one-phase excitation winding 5 and a two-phase Output winding (not shown).
- the rotor 2 is constituted by an iron core 6 having four salient poles 7 so as to operate as a rotation angle detecting device 10 having a double shaft angle 4 and is rotatable with respect to the stator 1.
- the excitation winding 5 is intensively wound around each of the teeth 3 having the tooth numbers 1 to 9, and the polarity is such that the winding can form six magnetic poles. At this time, consider how to wind the output winding.
- the rotation angle detection device In order to function as a rotation angle detection device,
- the first order in the space is the order whose mechanical angle is 360 degrees as one cycle.
- the magnetic flux of the number of pole pairs of the excitation and its integral multiple of the space order must not be picked up, the conditions necessary for the two-phase output winding to function as the rotation angle detector can be summarized.
- phase three-phase winding
- Figures 12 and 13 show the phases in which the windings of the first and seventh spatial magnetic fluxes wound around each tooth interlink.
- the number of each vector indicates the tooth number, and indicates the phase of the magnetic flux linking the winding wound around each tooth number. Assume that the phase is counterclockwise. From this vector diagram, if the windings are applied to the teeth Nos. 1, 5, and 6 and the polarities of the teeth Nos. 5 and 6 are reversed from those of the tooth 1, the primary magnetic flux in the space can be picked up.
- a rotation angle detection device can be established.
- a three-phase winding that picks up the primary or seventh-order magnetic flux and shifts the electrical angle by 120 degrees can be configured (however, the electrical angle is the angle obtained by multiplying the mechanical angle by the shaft angle) ). That is, the winding specification is as shown in the table in FIG. Here, the number of turns is represented by ⁇ 1.0 for standardization, and the difference in sign indicates the difference in polarity. In addition, it indicates that the fountain foil is not applied at the location of 0.0.
- Figures 17 and 18 show the actual number of turns determined based on Fig. 16. In FIG.
- Figure 16 the number of windings is multiplied by 50 for the excitation winding and 150 for the output winding.
- Figure 17 shows the case where the number of turns is allowed to be a decimal number (ideal case).
- Figure 18 is rounded to the nearest decimal point.
- the winding specifications are shown in Fig. 17 and Fig. 18 to show how the voltage appearing in the two-phase output winding changes when the excitation winding is excited by AC current, depending on the rotor position.
- 19 and shown in the graph of FIG.
- 20 is a phase winding and 21 is a J3 phase winding.
- the horizontal axis shows the rotor position in mechanical angle, and the vertical axis shows the voltage generated in the output winding.
- the negative sign of the voltage indicates that the phase is inverted with respect to the current in the excitation winding.
- the voltage was a sinusoidal waveform and the electrical angle was shifted 90 degrees (mechanical angle 22.5 degrees) from each other. Therefore, it was confirmed that the device could operate as a rotation angle detector with a shaft multiple angle of 4.
- the output winding was virtually defined as a three-phase winding, and then subjected to three-phase to two-phase conversion to obtain a two-phase output winding.
- it was confirmed and operated as a rotation angle detection device.
- the number of phases is reduced as compared with a rotation angle detection device in which the excitation is configured in three phases, and thus the structure is simplified.
- the number of stator teeth is 16 but according to the present invention, the number of teeth may be 9.
- the number of teeth of the stator can be reduced and the rotation angle detecting device can be configured as compared with the conventional example, so that there is an effect that winding property and workability are good and mass productivity is excellent.
- the number of windings was changed in a sine wave shape.
- the output winding need not be provided. Since there are a plurality of teeth, there is also an effect that the winding work efficiency can be improved.
- a virtually configured multi-phase winding can be configured with three phases, so that the specification of the output winding can be easily determined.
- FIG. 21 shows an example of a double shaft angle of 2 and 9 teeth.
- 1 is a stator
- 2 is a rotor
- 3 is 9 teeth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- 6 is an iron core of the rotor 2
- 7 is two salient poles provided on the iron core 6
- 10 is a rotation angle detecting device. If the number of poles of the excitation winding is assumed to be six, the condition for operating as a rotation angle detector is also calculated.
- (1) Pick up the magnetic flux of the space first or space fifth.
- Figure 22 shows an example of a three-phase winding that satisfies condition (1).
- Figures 24 and 25 show the actual number of turns determined based on Fig. 23. In FIG. 23, the number of windings is 50 multiplied by the excitation winding, and the output winding is multiplied by 150.
- Fig. 24 shows the case where the number of turns is allowed to be a decimal number (ideal case), and
- Fig. 25 shows the number of turns rounded off. The winding specifications are shown in Fig.
- the output winding was virtually defined as a three-phase winding, and then subjected to three-phase to two-phase conversion to obtain a two-phase output winding.
- the device operated as a rotation angle detector.
- the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the number of turns was changed in a sine wave shape.In this case, there is a tooth that applies only a small number of turns, and the nozzle of an automatic winding winding machine that requires time for the tooth is required.
- the number of stator teeth is odd.
- Conventional example is tee
- the number of teeth was even, and the excitation winding was wound so that the polarity was reversed between adjacent teeth. That is, the number of stator teeth and the number of excitation windings were the same.
- the conventional winding method of exciting windings when the number of teeth is odd, such a winding pattern allows one place where the polarity of the adjacent windings coincides, so that the excitation winding is not well-balanced. There was a problem that the detection position error would increase.
- the configuration of the excitation winding of the present embodiment is different from the conventional example, and is wound so as to form one pattern with three teeth. That is, as shown in Fig.
- tooth number 1 has 50 turns
- tooth numbers 2 and 3 have 125 turns (the polarity is opposite to that of tooth number 1).
- This pattern is repeated three times, that is, the same number of times as the divisor of the number 9 of teeth (note that the divisor of 9 is a force S that is 1 and 3; The value is called a divisor.)
- the windings of the same pattern are repeated, so that the exciting windings can be wound in a well-balanced manner.
- a well-balanced excitation winding can be formed by repeating the winding of the same pattern about several times the number of teeth.
- Figure 28 shows an example with a shaft double angle of 4 and the number of teeth is 6.
- 1 is the stator
- 2 is the rotor
- 3 is the six teeth provided on the stator
- 4 is the iron core of the stator
- 5 is the winding wound around the teeth 3.
- Reference numeral 6 denotes an iron core of the rotor 2
- reference numeral 7 denotes four salient poles provided on the iron core 6
- reference numeral 10 denotes a rotation angle detecting device. Assuming that the number of poles of the excitation winding 5 is six, if the conditions for operating as a rotation angle detection device are similarly obtained, note that the shaft double angle is four.
- Figure 29 shows an example of a three-phase winding that satisfies condition (1).
- Figure 30 shows the result of performing a three-phase to two-phase conversion according to Eq. (4) to satisfy condition (2).
- 5 decimal places are rounded off.
- FIG. 31 shows a practically determined actual number of turns based on FIG. In FIG. 30, the number of turns is multiplied by 50 for the excitation winding and 150 for the output winding.
- Figure 31 is rounded off to the nearest whole number.
- the winding specification is shown in Fig. 31, and the graph of Fig. 32 shows how the voltage appearing in the two-phase output winding changes depending on the rotor position when the exciting winding is excited with AC current. .
- Fig. 33 shows an example where the shaft double angle is 8 and the number of teeth is 6.
- 1 is a stator
- 2 is a rotor
- 3 is six teeth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- 6 is a winding.
- the rotor 2 has an iron core
- 7 has eight salient poles provided on the iron core 6
- 10 has a rotation angle detecting device.
- Figure 34 shows an example of a three-phase winding that satisfies condition (1).
- Figure 35 shows the result of performing a three-phase to two-phase conversion according to Eq. (4) to satisfy condition (2).
- ⁇ 0 and k2 (2/3) 1/2 .
- 5 decimal places are rounded off.
- FIG. 36 shows a practically determined actual number of turns based on FIG. In FIG. 35, the number of windings is 50 and the number of windings is 50, and the number of windings is 1.5.
- Figure 36 is rounded to the nearest whole number.
- the winding specifications are shown in Fig.
- Fig. 37 Shown in In this figure, 20 is a 0-phase winding and 21 is a] 3-phase winding.
- the horizontal axis shows the rotor position in mechanical angle, and the vertical axis shows the voltage generated in the output winding.
- the negative sign of the voltage indicates that the phase is inverted with respect to the current of the excitation winding.
- the voltage was a sinusoidal waveform and the electrical angle was 90 degrees (mechanical angle 11.25 degrees). .
- the windings listed here are only examples. This is because there are other windings that satisfy condition (1), and the number of windings can also be changed by k.
- the output winding was virtually defined as a three-phase winding, and then three-phase to two-phase conversion was performed to obtain a two-phase output winding.
- the device operated as a rotation angle detector.
- the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the number of stator teeth is 16 and when the shaft double angle is 8, the number of stator teeth is 32, but according to the present invention, The number of teeth should be 6.
- the number of teeth of the stator can be reduced and the rotation angle detecting device can be configured as compared with the conventional example, so that there is an effect that winding property and workability are good and mass productivity is excellent.
- the number of turns is changed in a sine wave shape. In this case, there is a tooth that applies only a small number of turns, and the tooth of an automatic winding machine that requires time for the tooth is required.
- Fig. 38 shows an example of a double shaft angle of 8 and 9 teeth.
- 1 is a stator
- 2 is a rotor
- 3 is 9 teeth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- Reference numeral 6 denotes an iron core of the rotor 2
- 7 denotes eight salient poles provided on the iron core 6
- 10 denotes a rotation angle detecting device.
- FIG. 41 shows a practically determined actual number of turns based on FIG. In FIG. 40, the number of turns is multiplied by 50 for the excitation winding and the output winding is multiplied by 150. Note that Figure 41 is rounded to the nearest whole number.
- the winding specifications are shown in Fig.
- Fig. 42 shows how the voltage appearing in the two-phase output winding changes depending on the rotor position when the excitation winding is excited by AC current.
- 20 is "phase winding
- 21 is phase winding.
- the horizontal axis shows the position of the rotor in mechanical angle
- the vertical axis shows the voltage generated in the output winding.
- the negative sign of the voltage indicates that the phase is inverted with respect to the current of the excitation winding, and even in the case of a deviation, the voltages have a sinusoidal waveform and an electrical angle of 90 °.
- Degree mechanical angle 11.25 degrees
- the windings listed here are only examples. There are other windings that satisfy 1), and the number of windings can be changed by y and k.
- the output winding was virtually defined as a three-phase winding, and then subjected to three-phase to two-phase conversion to obtain a two-phase output winding.
- the device operated as a rotation angle detecting device.
- the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the stator Although the number of teeth was 32, according to the present invention, the number of teeth may be nine.
- Fig. 43 shows an example of a double shaft angle of 4 and the number of teeth is 12.
- 1 is a stator
- 2 is a rotor
- 3 is 1 tooth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the tooth 3
- Reference numeral 6 denotes an iron core of the rotor 2
- 7 denotes four salient poles provided on the iron core 6
- 10 denotes a rotation angle detecting device.
- FIG. 46 shows the actual number of windings determined based on FIG. 45. In FIG. 45, the number of windings is 50 multiplied by the number of exciting windings, and the number of windings is multiplied by 150. Figure 46 is rounded off to the nearest whole number. The winding specifications are as shown in Fig. 46. Fig.
- FIG. 47 is a graph showing how the voltage appearing in the two-phase output winding changes depending on the rotor position when the exciting winding is excited with AC current. Shown in In this figure 20 is a single-phase winding and 21 is a three-phase winding. The horizontal axis shows the rotor position in mechanical angle, and the vertical axis shows the voltage generated in the output winding. However, the negative sign of the voltage indicates that the phase is inverted with respect to the current of the excitation winding. In each case, the voltage was a sinusoidal waveform and the electrical angle was shifted 90 degrees (mechanical angle 22.5 degrees). Therefore, it was confirmed that the device operated as a rotation angle detector with a shaft multiple of 4.
- Fig. 48 shows an example with a shaft double angle of 8 and 12 teeth.
- 1 is a stator
- 2 is a rotor
- 3 is one of two teeth provided on the stator 1
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- Reference numeral 6 denotes an iron core of the rotor 2
- 7 denotes eight salient poles provided on the iron core 6
- 10 denotes a rotation angle detecting device.
- FIG. 51 shows the actual number of windings determined based on FIG. 50. The number of turns in FIG. 50 is a value obtained by multiplying the number of turns by 50 for the excitation winding and by 150 for the output winding. Note that Figure 51 is rounded off to the nearest whole number.
- the winding specification is shown in Fig.
- Fig. 52 shows how the voltage appearing in the two-phase output winding changes with the rotor position when the exciting winding is excited by AC current.
- 20 is 0; phase winding, 21 is phase winding.
- the horizontal axis shows the rotor position in mechanical angle, and the vertical axis shows the voltage generated in the output winding.
- the negative sign of the voltage indicates that the phase is inverted with respect to the current of the exciting winding. Since the voltages are sinusoidal waveforms and have an electrical angle of 90 degrees (mechanical angle of 11.25 degrees), they have been confirmed to operate as a rotation angle detector with a shaft multiple angle of 8.
- windings listed here are only examples. This is because there are other windings that satisfy the condition (1), and the number of windings can be changed by y and k.
- the output winding is virtually defined as a three-phase winding, and then the three-phase two-phase conversion is performed. As a result, a two-phase output winding was obtained.
- the device operated as a rotation angle detector. With such a configuration, the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the number of stator teeth when the shaft double angle is 4, the number of stator teeth is 16 and when the shaft double angle is 8, the number of stator teeth is 32, but according to the present invention, The number of teeth should be 1 2.
- the number of teeth of the stator can be reduced and the rotation angle detecting device can be configured as compared with the conventional example, so that there is an effect that winding property and workability are good and mass productivity is excellent.
- the number of turns was changed in a sine wave shape.In this case, there is a tooth that applies only a small number of turns, and a nozzle of an automatic winding machine that requires time for the tooth is used.
- the winding work efficiency is reduced due to the necessity of positioning, but as is clear from FIGS. 46 and 51, in the present invention, there is a tooth which does not need to be provided with the output winding.
- Embodiment 6 Since there are a plurality of them, there is also an effect that the winding work efficiency can be improved. In addition, when a two-phase output winding is configured, a virtually configured multi-phase winding can be configured with three phases, so that it is possible to easily determine the specifications of the output winding.
- Embodiment 6
- the rotation angle detection device of the present invention operates by the windings picking up magnetic flux generated in the gap between the stator and the rotor, but may be affected by external noise.
- the magnetic flux generated by the zeroth-order magnetomotive force in the space may have an adverse effect.
- the spatial order of this magnetic flux coincides with the rotor doubling angle.
- a rotation angle detector with a shaft multiple of 4 generates a fourth-order magnetic flux in space. This will be described with reference to FIG.
- 30 is the current (direction) flowing around the axis of the rotor 2
- 31 is the magnetomotive force (direction) generated by the current
- 32 is generated by the magnetomotive force 31
- the magnetic flux has the same order as the shaft multiple angle.
- rotor 2 has the same number of salient poles as : Magnetic flux of the same order as the shaft angle multiplication is generated in the air gap by the magnetomotive force of the space 0th order. In addition, a zero-order magnetic flux in the space is also generated.
- the output winding is configured so as not to pick up a magnetic flux of the same spatial order as the spatial order of the change in the permeance of the rotor or a magnetic flux generated by the magnetomotive force of the spatial zeroth order. This is to prevent the detection position error from increasing.
- Figure 54 shows the vector diagram for the fourth-order space.
- a virtual three-phase winding is formed.
- the sum of the vectors for the spatial fourth order should be zero.
- the U-phase winding is applied to teeth 1, 5, and 6, and the polarity is reversed from 1 to 5, 6; By changing it from that of, it is possible to eliminate the fourth-order magnetic flux in the space.
- the number of turns N 5 N 6 for tooth numbers 5 and 6 and the number of turns N j for tooth number 1
- FIG. 55 shows an example of the winding.
- Fig. 56 shows a three-phase to two-phase conversion of this, and the specific number of turns is shown in Fig. 57.
- Figure 58 shows how the output voltage changes depending on the rotor position.
- 20 is a phase winding and 21 is a] three-phase winding. Since the voltages are sinusoidal waveforms and have an electrical angle of 90 degrees (mechanical angle 22.5 degrees), they operate as a rotation angle detector with a shaft multiple of 4. I was able to confirm.
- the output winding was virtually defined as a three-phase winding, and then subjected to three-phase to two-phase conversion to obtain a two-phase output winding.
- the device operated as a rotation angle detector.
- the number of phases is reduced as compared with a rotation angle detection device in which excitation is configured in three phases, so that the structure is simplified and the manufacturing process is simplified.
- the number of the teeth may be 9.
- the number of teeth of the stator can be reduced as compared with the conventional example to form the rotation angle detecting device, so that there is an effect that winding property and workability are good and mass productivity is excellent. Furthermore, in the conventional example, the number of turns was changed in a sine wave form.
- the present invention since there are a plurality of teeth which do not need to be provided with output windings, there is a problem that the winding work efficiency is reduced. Also, there is an effect that the winding work efficiency can be improved.
- a multi-phase winding that is virtually configured can be configured with three phases, so that the specification of the output winding can be easily determined.
- the two-phase output winding picks up a magnetic flux of the same spatial order as the spatial order of the change in the permeance of the rotor and a specific component of the magnetic flux generated by the magnetomotive force of the spatial zeroth order. Since the output winding is configured so as not to have an error, there is an effect of preventing an increase in the detection position error.
- Embodiment 7
- the shape of the rotor was not particularly limited. However, if the shape of the rotor is not appropriate, the detection position error may increase.
- a rotation angle detection device utilizing a fluctuation component of permeance caused by the shape of the rotor is described. If the fluctuation component of the permeance is sinusoidal, the detection position error is small and the accuracy is high.
- the permeance angle ⁇ between the inner circumference of the stator and the outer circumference of the rotor includes the DC component.
- a and B are positive constants, A> B, and M is the double angle of the rotation angle detector. From the fact that the gap length is inversely proportional to the permeance, and from Equation (6) and the force, the gap length at the angle 6 is
- the pulsation component of the permeance of the air gap becomes sinusoidal, and a highly accurate rotation angle detection device can be obtained.
- Embodiment 8 the same effects as those of the above-described first to sixth embodiments can be obtained, and further, the number of output windings is set as described in the first to sixth embodiments, Since the rotor has a shape determined by the equation (7), the detection position error can be further reduced, and a highly accurate rotation angle detection device can be obtained.
- Embodiment 8 the same effects as those of the above-described first to sixth embodiments can be obtained, and further, the number of output windings is set as described in the first to sixth embodiments, Since the rotor has a shape determined by the equation (7), the detection position error can be further reduced, and a highly accurate rotation angle detection device can be obtained.
- Embodiment 8 the same effects as those of the above-described first to sixth embodiments can be obtained, and further, the number of output windings is set as described in the first to sixth embodiments, Since the rotor has a shape determined by the equation (7), the detection position error can be further reduced, and a highly accurate rotation angle detection
- the rotation angle detection device of the present invention operates by the windings picking up magnetic flux generated in the gap between the rotor and the stator, but when the rotation axis of the rotor is displaced from the center of the stator, or When the center of the rotor is deviated from the rotation axis, that is, when eccentricity or axis deviation occurs, there is a possibility that the detection position error increases due to the influence of the magnetic flux component of a specific order.
- the order of the magnetic flux generated by the eccentricity and the axis deviation is as follows, for example.
- the order of the exciting magnetomotive force is the spatial order of the magnetomotive force generated by the current flowing through the exciting winding. For example, if the excitation is 6 poles, the order of the magnetomotive force of the excitation will be 3. At this time, from the above equation
- the second and fourth order magnetic flux is generated in the space.
- the output magnetic flux may be picked up by the output winding due to the eccentricity as described above, thereby causing an increase in the detection position error. Therefore, in the present embodiment, a configuration of a winding specification that does not pick up a specific component of the magnetic flux generated due to such eccentricity or axis deviation will be described.
- Fig. 59 shows an example where the number of stator teeth is 12 and the shaft double angle is 8.
- 1 is a stator
- 2 is a rotor
- 3 is a stator 1 provided with two teeth
- 4 is an iron core of the stator 1
- 5 is a winding wound around the teeth 3
- Reference numeral 6 denotes an iron core of the rotor 2
- 7 denotes eight salient poles provided on the iron core 6
- 10 denotes a rotation angle detecting device.
- the excitation winding is provided with six poles. At this time, as mentioned above, when the excitation winding has six poles, secondary and quaternary magnetic fluxes are generated in the air gap due to eccentricity and axial misalignment.
- FIG. 60 The configuration of the output winding that does not pick up these two components is considered using a vector diagram.
- Vector diagrams for the 2nd and 4th spatial dimensions are shown in Figs. 60 and 61, respectively. It shows the phase in which the windings applied to each of the two teeth repel the secondary and quaternary magnetic flux in space.
- a tooth represented by the relationship n, n + 2, n + 4 (n l, 2, 3, ⁇ ⁇ ⁇ ⁇ ), for example, tooth numbers 1, 3, and 5
- the vectors of the magnetic flux interlinking the windings applied to each other are shifted from each other by an electrical angle of 120 degrees, and the sum is zero.
- Figures 62, 63, and 64 show examples of temporarily configured three-phase windings.
- the U phase is composed of tooth numbers 1, 3, 5; in FIG. 63, the U phase is composed of tooth numbers 1, 3, 5, and 2, 4, 6; It consists of 5, 8, 10, and 12.
- the V and W phases are configured so that they have a positional relationship of ⁇ 120 degrees electrical angle from the U phase. These are converted to two-phase output windings by three-phase to two-phase conversion, as shown in Figs.
- Figures 68, 69, and 70 show more specific examples of the number of turns.
- the rotation angle detector has an eccentricity of 0.1 Omm between the rotor and the stator, and an ideal case without eccentricity.
- FIG. 71 shows the detection position error for the above.
- the detection position error increased significantly due to the eccentricity in the conventional winding specification, but in the winding specification of the present embodiment, the detection position error hardly changed even if the eccentricity occurred. It is obvious that it functions as a much more accurate rotation angle detector.
- the same effects as those of the above-described first to seventh embodiments can be obtained, and the configuration of the output winding is the same as that described in the present embodiment.
- a specific component of the magnetic flux density generated when the rotation axis of the rotor and the center of the stator are displaced, that is, when eccentricity or misalignment occurs, is not picked up, so that an increase in the detection position error can be prevented.
- eccentricity Since the detection position error does not increase, the cost for improving the mounting position accuracy can be reduced.
- the winding specification described here has a better winding property and workability, and is excellent in mass productivity, because the rotation angle detection device can be configured by reducing the number of stator teeth compared to the conventional example, even if the shaft double angle is large. Needless to say, there is also the effect that there is. Furthermore, in the conventional example, the number of turns was changed in a sine wave shape.In this case, there is a tooth that applies only a small number of turns, and an automatic winding machine that requires a long time for the tooth is used. Although it was necessary to position the nozzle, there was a problem that the winding work efficiency was reduced. However, as is clear from FIGS. 68, 69 and 70, the present invention does not require the output winding. Needless to say, since there are multiple good teeth, the winding work efficiency can be improved. Embodiment 9
- the rotation angle detection device of the present invention described in the above-described first to eighth embodiments is used for various rotating electric machines such as a generator and a motor.
- Embodiments 1 to 8 described above by configuring windings using polyphase to two-phase conversion, the number of stator teeth can be smaller than in the conventional example even if the shaft double angle increases, and mass productivity is superior. It has been stated that a rotation angle detecting device can be obtained.
- Such a rotation angle detection device is inexpensive and has excellent environmental resistance compared to an optical encoder. This has the effect that an excellent system can be constructed.
- FIG. 72 shows a diagram in which the rotation angle detecting device of the present invention is incorporated in a generator having a claw-shaped field core.
- 1 is a stator of the rotation angle detection device 10
- 2 is a rotor of the rotation angle detection device 10
- 5 is an exciting winding wound around the teeth 3
- 8 is an output winding
- 40 is a generator (or a motor)
- 41 is a field core of the generator 40
- 42 is a shaft
- 43 is a bearing
- 44 is a field winding (field current flows)
- 4 5 is a stator of the generator 40.
- the generator which also acts as a motor
- the generator is located in the engine room, so it is hot and optical encoders are not suitable.
- the rotation angle detection device of the present invention composed of an iron core and windings, an inexpensive and sophisticated system having excellent environmental resistance can be constructed. Further, as described above, since the manufacturing process of the rotation angle detecting device of the present invention is easy, the manufacturing process of the rotating electric machine using the same is also at least as much as easy.
- the rotor may be eccentric due to a machining error such as a mounting position error.
- the output winding generates a specific order component of the air gap magnetic flux generated by the eccentricity and the axis deviation. Since it is configured so as not to be picked up, there is an effect that an increase in the detection position error due to eccentricity and axis deviation can be prevented. Furthermore, since the detected position error does not increase due to the mounting position error, eccentricity, axis deviation, and the like, there is an effect that the cost for improving the mounting position accuracy can be reduced.
- the number of turns is obtained by converting the number of turns of a multi-phase virtually defined in advance into two phases.
- the present invention is not limited to this case.
- the number of turns of the polyphase may not be virtual but may be actually defined, or may be obtained by any other method. Good, and in that case, the same effect as above can be obtained. 'Industrial availability
- the rotation angle detection device is useful as a rotation angle detector that can be widely used not only for a vehicle belt-driven ISG (Integrated Stroter Generator) but also for various other motors. is there.
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP03746490A EP1498699B1 (en) | 2002-04-15 | 2003-04-15 | Rotational angle sensor and rotary electric machine comprising it |
US10/510,486 US7268537B2 (en) | 2002-04-15 | 2003-04-15 | Rotation angle detection device that converts m-phase windings into two-phase windings and dynamo-electric machine using the same |
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JP2002-111800 | 2002-04-15 | ||
JP2002111800A JP3926664B2 (ja) | 2002-04-15 | 2002-04-15 | 回転角度検出装置およびそれを用いた回転電機 |
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WO2003087728A1 true WO2003087728A1 (fr) | 2003-10-23 |
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US (1) | US7268537B2 (ja) |
EP (1) | EP1498699B1 (ja) |
JP (1) | JP3926664B2 (ja) |
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EP0595448A1 (en) * | 1992-10-27 | 1994-05-04 | Tamagawa Seiki Kabushiki Kaisha | Sinusoidally distributed winding method suitable for a detector winding |
US5446966A (en) * | 1993-01-19 | 1995-09-05 | Ishizaki; Akira | Angular position transducer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2679026B1 (fr) | 1991-07-11 | 1993-09-24 | Alsthom Gec | Dispositif pour la mesure de la position angulaire d'un rotor par rapport a un stator. |
JP3182493B2 (ja) * | 1994-12-27 | 2001-07-03 | 多摩川精機株式会社 | バリアブルリラクタンス型角度検出器 |
US5866964A (en) * | 1996-01-29 | 1999-02-02 | Emerson Electric Company | Reluctance machine with auxiliary field excitations |
JP3938501B2 (ja) * | 2001-10-16 | 2007-06-27 | 三菱電機株式会社 | 回転角度検出装置、それを用いた永久磁石型回転電機、及び、永久磁石型回転電機を用いた電動パワーステアリング装置 |
-
2002
- 2002-04-15 JP JP2002111800A patent/JP3926664B2/ja not_active Expired - Fee Related
-
2003
- 2003-04-15 EP EP03746490A patent/EP1498699B1/en not_active Expired - Fee Related
- 2003-04-15 WO PCT/JP2003/004779 patent/WO2003087728A1/ja active Application Filing
- 2003-04-15 CN CNB038084406A patent/CN1333235C/zh not_active Expired - Fee Related
- 2003-04-15 US US10/510,486 patent/US7268537B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49124508A (ja) * | 1973-04-02 | 1974-11-28 | ||
JPS5956859A (ja) * | 1982-09-24 | 1984-04-02 | Yaskawa Electric Mfg Co Ltd | バ−ニヤ形誘導子レゾルバ |
US4631510A (en) * | 1985-09-03 | 1986-12-23 | Powerton, Division Of Contraves Goerz Corporation | Harmonically graded airgap reluctance-type rotating electric resolver |
EP0595448A1 (en) * | 1992-10-27 | 1994-05-04 | Tamagawa Seiki Kabushiki Kaisha | Sinusoidally distributed winding method suitable for a detector winding |
US5446966A (en) * | 1993-01-19 | 1995-09-05 | Ishizaki; Akira | Angular position transducer |
Also Published As
Publication number | Publication date |
---|---|
EP1498699A4 (en) | 2006-11-15 |
JP3926664B2 (ja) | 2007-06-06 |
JP2003307436A (ja) | 2003-10-31 |
EP1498699A1 (en) | 2005-01-19 |
US20050093538A1 (en) | 2005-05-05 |
US7268537B2 (en) | 2007-09-11 |
CN1646882A (zh) | 2005-07-27 |
CN1333235C (zh) | 2007-08-22 |
EP1498699B1 (en) | 2011-10-12 |
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