Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/08—Circuits or control means specially adapted for starting of engines
  • F02N11/0859—Circuits or control means specially adapted for starting of engines specially adapted to the type of the starter motor or integrated into it
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/08—Circuits or control means specially adapted for starting of engines
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
  • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
  • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Definitions

• the present invention relates to a brushless multi-phase AC electric machine and an energization control device thereof, and more particularly to a brushless multi-phase AC electric machine suitable for advancing lead angle and an energization control device thereof.
• an abduction type permanent magnet type rotary electric motor in which a cylindrical rotor rotates around the outer periphery of a stator is known.
• an auxiliary pole portion is provided between adjacent permanent magnets in order to alleviate the distortion of the magnetic flux distribution between the rotor and the stator to prevent the occurrence of torque vibration.
• the formed permanent magnet type rotating electric machine is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 8-2757547.
• auxiliary pole portion In a conventional permanent magnet type rotating electric machine having an auxiliary pole portion, since the auxiliary pole portion also functions as a part of the permanent magnet, the energization timing of the rotating electric machine is limited to the width of the auxiliary pole portion in the rotation direction. It is desirable to advance the angle by a corresponding angle.
• the standard energization timing (0 ° advance) is detected as a change in the detection signal of the magnetic pole sensor, and the advance position is obtained by calculation based on the standard energization timing. Insufficient number The advance position could not be accurately detected in the stable low rotation range.
• An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a brushless multi-phase AC electric machine and an energization control device for the same, which can precisely advance a phase current supplied to each phase by a desired angle. Is to do. Disclosure of the invention
• the present invention is characterized in that the following means are taken.
• a brushless multi-phase AC electric machine comprising: a magnetic pole sensor for detecting a rotation position of a rotor, wherein a phase current supplied to each phase is advanced by a predetermined amount based on a detection signal of the magnetic pole sensor.
• the sensor is arranged so that the current application timing of the advanced phase current is coincident with the change timing of the magnetic field detected by the magnetic pole sensor.
• one rotation of the motor is divided into multiple stages, and the current control of the brushless multi-phase AC machine that controls each phase current on a stage-by-stage basis.
• the device is characterized in that the phase of the phase current supplied to each phase is advanced by half the angle corresponding to one stage.
• the detection signal of the magnetic pole sensor changes in response to this, so that the switching timing of the advance energization is determined by the magnetic pole sensor.
• the detection can be accurately performed based on the detection signal of the detection.
• FIG. 1 is an overall side view of a starter type motorcycle to which the present invention is applied.
• FIG. 2 is a cross-sectional view of the swing cut of FIG. 1 along the crankshaft.
• Fig. 3 is a partially broken plan view of the starter / generator (permanent magnet type rotary electric motor) in a plane perpendicular to the rotation axis (crankshaft).
• FIG. 4 is a side sectional view of FIG.
• FIG. 5 is a plan view of the rotor yoke.
• FIG. 6 is a side view of the rotor yoke.
• FIG. 7 is a partially enlarged view of the rotor yoke.
• FIG. 8 is a diagram for explaining a function (at the time of electric power operation) of a gap provided in the rotor yoke.
• FIG. 9 is a diagram for explaining the function (at the time of power generation) of a gap provided in the rotor yoke.
• FIG. 10 is a partially enlarged view of FIG.
• FIG. 11 is a partially enlarged view of FIG.
• FIG. 12 is a block diagram of a control system of the starter / generator.
• FIG. 13 is a diagram schematically illustrating the operation timing of energization control in the present embodiment.
• FIG. 14 is a signal waveform diagram in a case where 120 ° forward rotation energization is performed at a 5 ° lead angle.
• FIG. 15 is a signal waveform diagram in the case where 180 ° forward rotation energization is performed at a 10 ° advance angle.
• FIG. 16 is a signal waveform diagram when the 120 ° reverse rotation energization is performed with a 5 ° advance angle.
• FIG. 1 is an overall side view of a scooter type motorcycle to which a vehicle power generation control device of the present invention is applied.
• the front part of the vehicle body and the rear part of the vehicle body are connected via a low floor part 4, and the body frame forming the skeleton of the vehicle body is generally composed of a down tube 6 and a main pipe 7.
• a fuel tank and a storage box (both not shown) are supported by a main pipe 7, and a seat 8 is disposed above the main pipe 7.
• a handle 11 is provided above and supported by a steering head 5, a front fork 12 extends below, and a front wheel FW is supported at its lower end.
• the upper part of the handle 11 is covered with a handle bar 13 which also serves as an instrument panel.
• a bracket 15 protrudes from the lower end of the rising portion of the main pipe 7, and the hanger bracket 18 of the swingout 2 is swingably connected to the bracket 15 via a link member 16. Supported.
• the swing unit 2 is equipped with a single-cylinder two-stroke internal combustion engine E in front of the unit.
• a belt-type continuously variable transmission 10 is formed from the internal combustion engine E to the rear, and a rear wheel RW is supported by a reduction mechanism 9 provided at a rear portion thereof via a centrifugal clutch.
• the rear cushion 3 is interposed between the upper end of the speed reduction mechanism 9 and the upper bent portion of the main pipe 7.
• a carburetor 17 connected to an intake pipe 19 extending from the internal combustion engine E and an air cleaner 14 connected to the carburetor 17 are provided in front of the swing unit 2.
• FIG. 2 is a cross-sectional view of the swing unit 2 taken along the crankshaft 201, and the same reference numerals as those described above denote the same or equivalent parts.
• the swing unit 2 is covered by a crankcase 202 formed by combining left and right crankcases 202L and 202R, and the crankshaft 201 is fixed to the crankcase 202R.
• the bearings 208 and 209 are rotatably supported.
• a crank (not shown) is connected to the crankshaft 201 via a crankpin 21.
• the left crankcase 202 L also serves as a belt-type continuously variable transmission case, and a belt drive pulley 210 is rotatably mounted on the crankshaft 201 extending to the left crankcase 202 L.
• the belt drive pulley 210 consists of a fixed pulley half 21 1 L and a movable pulley half 210 R, and the fixed pulley half 210 L is the left end of the crankshaft 201.
• To the right side of the boss 211, and the movable bulge half 210R is spline-fitted to the crankshaft 201, and approaches and separates from the fixed pulley half 210L.
• a V-belt 2 12 is wound between the two pulley halves 210 L and 210 R.
• a cam plate 215 is fixed to the crankshaft 201, and a slide piece 215 a provided on the outer peripheral end thereof is connected to the movable pulley half 221. It is slidably engaged with a cam plate sliding boss portion 210a formed in the axial direction at the outer peripheral end of the 0R.
• the cam plate 2 15 of the movable pulley half 2 1 OR has a tapered surface that is inclined toward the outer periphery toward the cam plate 2 15 side, and the tapered surface and the movable pulley half 2 10 R A dry weight pole 2 16 is housed in the space between them.
• a driven pulley (not shown) corresponding to the belt drive pulley 210 is provided at the rear of the vehicle, and the V-belt 212 is wound around the driven pulley.
• the power of the internal combustion engine E is automatically adjusted and transmitted to the centrifugal clutch, and drives the rear wheels RW via the speed reduction mechanism 9 and the like.
• a starter / generator 1 combining a starter motor and an AC generator is provided in the right crankcase 202R.
• an outer rotor 60 is fixed to a tapered portion at the tip of a crankshaft 201 by screws 25 3.
• the inner stator 50 disposed inside the outer rotor 60 is screwed and supported on the crankcase 202 by bolts 279.
• the configuration of the starter / generator 1 will be described later in detail with reference to FIGS.
• the fan 280 has its central conical portion 280a affixed to the outer rotor 60 by bolts 246 at the skirt, and the fan 280 is connected to the fan power 8 Covered by 1
• FIGS. 3 and 4 are a partially broken plan view and a side sectional view of the starter / generator 1 (permanent magnet type rotary motor) taken along a plane perpendicular to the rotation axis (crankshaft 201).
• 6 is a plan view of the rotor yoke and an enlarged view of a portion thereof, and the same reference numerals as those described above denote the same or equivalent parts.
• the starter / generator 1 of the present embodiment includes a stator 50 and an outer rotor 60 that rotates around the outer periphery of the stator 50.
• the rotor yoke 61 is formed by laminating ring-shaped silicon steel sheets (thin plates) in a substantially cylindrical shape, and as shown in FIGS.
• N-pole permanent magnets 6 2 N and S-pole permanent magnets 6 2 S alternately inserted through a plurality of openings 6 11 provided in the circumferential direction
• the rotor yoke 61 is connected to the crankshaft 201 by a power-up rotor case 63.
• the rotor case 63 has a claw portion 63 a at a circumferential end thereof, and the claw portion 63 a is bent inward to pinch the laminated structure rotor shaft 61 in the axial direction, and Each of the permanent magnets 62 (62N, 62S) penetrating into the opening 611 of the rotor yoke 61 is held at a predetermined position in the rotor yoke 61.
• the stator 50 is configured by laminating key steel plates (thin plates), and includes a stator core 51 and a stator salient pole 52 as shown in FIG.
• a stator winding 53 is wound on each stator salient pole 52 in a single-pole concentrated manner, and the main surface of the stator 50 is covered with a protective cover 71.
• the rotor yoke 61 has one or two openings 611 at circumferentially spaced intervals of 30 degrees, into which the permanent magnets 62 are inserted. ing. Between the adjacent openings 6 1 1 is used as the auxiliary pole 6 1 3 Function.
• a permanent magnet 62 having a substantially drum-shaped cross section is inserted into each of the openings 6 11.
• the shape of the opening 611 is not the same as the cross-sectional shape of the permanent magnet 62, and when the permanent magnet 62 is inserted into the opening 611, each permanent magnet 62 First gaps 6 12 are formed on both sides along the circumferential direction of the magnet 62, and second gaps 6 14 are formed on both sides of each permanent magnet 62 on the stator side.
• FIG. 8 is a diagram showing a magnetic flux density distribution when the starter / generator device 1 functions as a starter motor
• FIG. 9 shows a magnetic flux density distribution when the device 1 functions as a generator.
• FIG. When the starter / generator device 1 functions as a starter motor, an exciting current is supplied from the battery 42 to each stator winding 53 via the control unit 40, as shown in FIG. Lines of magnetic force generated in the radial direction from the stator salient poles 52 N excited in the stator exit from the stator-side surface of the S-pole permanent magnet 62 S to the back surface, and most of the core portions 615 and rotor cores of the rotor yoke 61. through the commutating pole portion 6 1 3 returns to the adjacent scan is magnetized to the S pole stator salient pole 5 2 S, via the stator core 5 1 the N pole excited stator salient poles 5 2 N.
• air gaps 6 12 are formed on both sides along the circumferential direction of each permanent magnet 6 2, and the leakage magnetic flux from the side of each permanent magnet 6 2 to the auxiliary pole 6 1 Most of the lines of magnetic force escape from each permanent magnet 62 to the core section 615 of the rotor yoke 61 and then reach the stator 50 via the auxiliary pole section 613.
• the outer rotor 60 and the stator Since the vertical component of the magnetic flux passing through the air gap between 50 and 50 increases, the driving torque can be increased as compared with the case where the air gap 6 12 is not provided.
• the slits 614 for limiting the magnetic path in the circumferential direction are also formed on the stator side at both ends of the permanent magnet 62, the slits pass through the inside of the rotor yoke 61. Leakage magnetic flux is also reduced.
• one of the slits 6 14 (6 14 A) passes through the auxiliary pole portion 6 13 of the rotor yoke 61 This prevents the magnetic flux B 1 from being guided to the inner circumferential portion 6 16 of the rotor yoke 61, and acts to efficiently guide most of the magnetic flux B 1 to the stator salient poles 52 S. Also, the other of the slits 6 14 (6 14 B) transfers the magnetic flux B 2 passing from the permanent magnet 62 N through the inner circumferential portion 616 of the rotor yoke 61 to the auxiliary pole portion 613.
• the starter / generator apparatus 1 when the starter / generator apparatus 1 is to function as a generator, as shown in FIG. 9, the magnetic flux generated from each permanent magnet 62 forms a closed magnetic path together with the stator salient pole and the stator core. Therefore, a generated current corresponding to the number of revolutions of the rotor can be generated in the stator winding.
• the regulation voltage by the regulator 100 described later is set to 14.5 V, and the output voltage when the starter / generator 1 functions as a generator is set to the regulation voltage. When this happens, the phase current is short-circuited.
• the air gap 612 and the slit 614 are provided between the outer rotor 60 and the stator 50.
• the magnetic flux perpendicularly crossing the air gap increases. Therefore, the drive torque when functioning as a starter motor can be increased without increasing the driven torque when the permanent magnet type rotary motor functions as a generator.
• FIG. 12 is a block diagram of a control system of the starter / generator 1, and the same reference numerals as those described above denote the same or equivalent parts.
• the ECU includes a three-phase full-wave rectifier 300 that performs full-wave rectification of the three-phase alternating current generated by the generator function of the starter / generator 1.
• the output of the full-wave rectifier 300 is a regulated voltage (regulator operation).
• a regulator 100 for limiting the voltage to, for example, 14.5 V) is provided.
• the ECU has a magnetic pole sensor 29 (29U, 29V, 29W) that detects the rotor angle, an ignition coil 21, a slot sensor 23, a fuel sensor 24, a seat switch 25, and an eye. Dolswitch 26, cooling water temperature sensor 2 7 And the ignition pulser 30 are connected, and a detection signal is input to the ECU from each unit.
• An ignition plug 22 is connected to the secondary side of the ignition coil 21.
• the ECU has a starter relay 34, starter switch 35, stop switches 36, 37, standby indicator 38, fuel indicator 39, speed sensor 40, motorcycle starter 41, and headlight 42 connected. Is done.
• the headlight 42 is provided with a dimmer switch 43.
• a current is supplied from a battery 46 to each of the above-described parts via a main fuse 44 and a main switch 45. Note that the notch 46 is directly connected to the ECU by the starter relay 34, but not through the main switch 45.
• one rotation of the rotor is divided into a plurality of stages (# 0, # 1, # 2,%) Based on the detection signals of the magnetic pole sensors 29U, 29V, and 29W, and each phase current is divided. Control is performed on a stage-by-stage basis.
• 60 ° (mechanical angle) of the rotor is set to 360 ° of electrical angle, which is divided into six stages (# 0 to # 5). Therefore, one stage is equivalent to a mechanical angle of 10 °.
• the motor rotates forward (reverse rotation) with an electrical angle of 120 ° in electrical angle of 5 ° (mechanical angle) when the rotor rotates in the reverse direction.
• FIG. 14 is a signal waveform diagram at 120 ° forward rotation and 5 ° advance
• Fig. 15 is a signal waveform diagram at 180 ° forward rotation and 10 ° advance
• Fig. 16 is reverse rotation.
• FIG. 12 is a signal waveform diagram at 120 ° conduction and 5 ° lead angle.
• each of the magnetic pole sensors 29 U and 29 V 2 detects a change in the magnetic field, and switches the energization timing to each phase when the detection signal is displaced.
• the timing at which the detection signal of the V-phase sensor (magnetic pole sensor 29 V) falls that is, stage # 0
• the positive energization to the V phase is started and the positive energization to the U phase is stopped.
• the timing when the detection signal of the U-phase sensor (magnetic pole sensor 29U) rises that is, at the timing of switching from stage # 1 to stage # 2
• the reverse-direction energization to the U-phase starts and the W-phase Has been stopped in the reverse direction.
• each of the magnetic pole sensors 29 U, 29 V, and 29 W detects a change in the magnetic field at the timing of switching the advance of each phase current, and displaces the output of the detection signal.
• the switching timing of the energization for advancing the phase current coincides with the displacement timing of the detection signal of the magnetic pole sensor 29 in this embodiment.
• the magnetic pole sensors are arranged at predetermined positions, it is possible to accurately control the energization when the phase current is advanced.
• the advance angle is set to 5 °, which is half of 10 °, which is the angle corresponding to one stage, so that the advance angle of 5 ° in the reverse rotation of 120 ° shown in FIG.
• the timing of switching the advance angle energization can be matched with the displacement timing of the detection signal of the magnetic pole sensor. Therefore, according to the present embodiment, the energization control for advancing the phase current can be accurately performed not only during normal rotation but also during reverse rotation.
• the timing of switching the energization control during the advance angle control is detected by the magnetic pole sensor even when the advance angle is 5 ° when the reverse rotation is 120 °.
• the timing can be matched.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Control Of Eletrric Generators (AREA)
• Control Of Motors That Do Not Use Commutators (AREA)
• Permanent Magnet Type Synchronous Machine (AREA)
• Permanent Field Magnets Of Synchronous Machinery (AREA)
• Synchronous Machinery (AREA)
• Brushless Motors (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Priority Applications (2)

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Publications (1)

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ID=18823984

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Citations (5)

Family Cites Families (4)

• 2000
  • 2000-11-17 JP JP2000350823A patent/JP3930246B2/ja not_active Expired - Fee Related
• 2001
  • 2001-05-30 CN CNB01119362XA patent/CN100474745C/zh not_active Expired - Fee Related
  • 2001-10-31 MY MYPI20015029A patent/MY134522A/en unknown
  • 2001-11-06 TW TW090127460A patent/TWI249281B/zh not_active IP Right Cessation
  • 2001-11-07 WO PCT/JP2001/009718 patent/WO2002041476A1/ja active IP Right Grant
  • 2001-11-07 KR KR10-2003-7006618A patent/KR100521861B1/ko not_active IP Right Cessation
  • 2001-11-07 ES ES200350030A patent/ES2234436B2/es not_active Expired - Fee Related
  • 2001-11-07 BR BR0115419-2A patent/BR0115419A/pt not_active Application Discontinuation
  • 2001-11-15 AR ARP010105345A patent/AR031406A1/es active IP Right Grant
• 2003
  • 2003-04-01 ZA ZA200302559A patent/ZA200302559B/en unknown

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