CN105075074A - Inverter driven motor - Google Patents
Inverter driven motor Download PDFInfo
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- CN105075074A CN105075074A CN201480009603.6A CN201480009603A CN105075074A CN 105075074 A CN105075074 A CN 105075074A CN 201480009603 A CN201480009603 A CN 201480009603A CN 105075074 A CN105075074 A CN 105075074A
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- inverter
- capacitor
- driven
- motor
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- 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
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- 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
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/26—Devices for sensing voltage, or actuated thereby, e.g. overvoltage protection devices
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- 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
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Abstract
Provided is an inverter driven motor capable of reducing a voltage applied to a power supply line-side first coil for a motor. In an inverter driven motor having an inverter and a motor driven by the inverter, the inverter and the motor are connected with a terminal box, while the terminal box includes therein a terminal plate for connecting an inverter-side cable and a motor-side lead wire, a grounding plate provided on the bottom surface of the terminal box, and a capacitor serially connected in between the terminal plate and the grounding plate.
Description
Technical field
The present invention relates to the Driven by inverter motor corresponding with inversion surge sharply.
Background technology
In recent years, DC-to-AC converter is used to make motor variable-speed operation prevailing from the viewpoint of energy-saving.Instantly, the most universal DC-to-AC converter is Si (IGBT) inverter, but to this, and envisioning the less and inverter employing low-loss SiC of voltage rising time from now on can increase.As the concrete example of inverter employing SiC, there is utilize only diode to employ motor drive that mixing SiC (IGBT+SiCdiode) inverter of SiC, diode and switching device both sides employ full SiC (MOS-FET+SiCdiode) inverter of SiC.
But on the other hand, when using DC-to-AC converter to carry out drive motor, there is the situation that following phenomenon becomes the reason of the insulation degradation of motor interior.Such as with regard to the stator winding of motor, each winding is made up of multiple series coil, if but the voltage rising time of motor terminal diminish, then there is the situation that voltage concentrates on supply lines side first coil of motor.About this point, in non-patent literature 1, report has situation about producing in the winding department of the stator winding forming motor than voltage high during commercial frequency power drives in the past.
The relation changed by the time t of voltage to earth and coil voltage is described this phenomenon.Fig. 2 (a), Fig. 2 (b) are that time shaft represents that the stator winding in the situation that voltage rising time is larger and less situation rises around point with only around voltage to earth Vs, Ve of point and the change of coil voltage Vc with transverse axis.In this example, supply lines side is connected to stator winding and rises around a side, is applied by the voltage from supply lines side, only rises around the voltage to earth Ve of point after the rising of voltage to earth Vs.
Accordingly, when Fig. 2 (a) that voltage rising time is larger, rise around the rising of putting and stop around voltage to earth Vs, Ve of point more slow, coil voltage Vc also diminishes.But as Fig. 2 (b) when voltage rising time is less, rise around point and only become sharply around the rising of voltage to earth Vs, Ve of point, coil voltage Vc becomes large.
Fig. 3 represents the relation of voltage rising time tr (ns) and the first coil voltage share rate (the left side longitudinal axis).Voltage share rate is defined with following (1) formula at this.
[mathematical formulae 1]
(voltage share rate)=(the instantaneous maximum Vcmax of coil voltage) ÷ (rising around a voltage to earth Vs) × 100 [%] (1)
By the case representation of the motor of stator winding four series coils of each phase motor of use in Fig. 3.Therefore, under the stable state after voltage rise, the voltage of each coil of four series coils is shared and is shared 1 ÷ 4 × 100%=25% equably.Known in figure 3, when the voltage rising time of voltage rising time tr more greatly 10000ns, be with 25% of degree with stable state.
To this, if shorten voltage rising time tr, then voltage share rate becomes large, and such as, when voltage rising time tr is 20ns, voltage share rate reaches 90%.That is, in the motor of stator winding four series coils of each phase motor, when voltage rise transition, supply lines side first coil of motor is relative to voltage to earth burden 90%.After voltage rise, become four series coil equalizations and share, and this state all repeats in each igniting of SiC inverter.Therefore, when the inverter of voltage rise sharply such for MOS-FET inverter is connected to motor, need for relative motor supply lines side first coil repeat superpotential countermeasure.
In addition the capacitor temperature relative to voltage rising time tr is represented in Fig. 3 in the lump.According to this figure, there is voltage rising time tr longer, capacitor temperature becomes higher trend.Therefore, generate heat in (100 more than μ s) IGBT inverter that voltage rising time tr is longer (loss) becomes problem, but can suppression loss in (100 below μ s) SiC inverter that voltage rising time tr is shorter.
For this problem, also exist as patent documentation 1, insert direct capacitance, the capacitor of parallel flat at the terminal box of motor, method maximum voltage being declined by filter effect.Also exist the method between capacitor insertion end daughter board and ground connection in addition as patent documentation 2.
Need to guarantee space length, creepage distance during the manufacture of this external electric equipment, need the standard " insulation distance of control appliance " observing non-patent literature 1.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2010-51134 publication
Patent documentation 2: Japanese Patent Publication 6-41068 publication
Non-patent literature
Non-patent literature 1: Japanese electric machine industry association criterion JEM1103
Summary of the invention
Invent problem to be solved
In patent documentation 1, adopt following structure, direct capacitance is set at terminal box, therefore terminal board and ground plate are made parallel flat, between terminal board and ground plate, sandwich high dielectric material.The direct capacitance C of parallel flat during this countermeasure is C=ε
r× ε
0× S/d (ε
r: relative dielectric constant, ε
0: permittivity of vacuum, S: electrode area, d: interelectrode distance).
Its result, if increase direct capacitance and decreased distance d, then the eddy current loss producing ground plate becomes large problem.In addition, because electrode surface is close, easily produce creepage electric discharge.Even if under climbing conductively closed situation as countermeasure by insulating material, also can extend because of the vibration of motor, heat and peel off, produce creepage electric discharge, appear at the problem that terminal box produces earth fault.On the other hand, when in order to increase the problem that to there is terminal box direct capacitance increases electrode area S and maximize.
In addition in patent documentation 2, when applying the voltage of more than 200V, the distance between the positive pole of capacitor and negative pole is less and there is the problem producing creepage electric discharge and space and discharge.
According to above content, the object of the present invention is to provide the Driven by inverter motor of the voltage that can reduce supply lines side first coil being applied to motor.
For solving the method for problem
According to above content, Driven by inverter motor of the present invention, comprises inverter and by the motor of Driven by inverter, it is characterized in that, connect inverter and motor by terminal box, and comprise in this terminal box: the terminal board linking inverter side cable and motor side lead-out wire; Be arranged at the ground plate of the bottom surface of above-mentioned terminal box; And at the capacitor that the centre of above-mentioned terminal board and above-mentioned ground plate is connected in series.
The effect of invention
According to the present invention, be arranged at the terminal box not having filter in the past, terminal box can not be made to maximize, can reduce and the voltage of inverter surge voltage sharply to supply lines side first coil is concentrated.
With good grounds embodiments of the invention can obtain following effect again.Even if increase the distance of terminal board and ground plate, also can obtain more than enough direct capacitance at high frequency cutoff mode filter, therefore, it is possible to reduce the heating that ground plate produces because of eddy current loss.
In addition, by insulating material filling terminal box, therefore, it is possible to prevent the heat produced due to the heating because of terminal board and ground plate from extending, the vibration that produces because of the driving of motor and make the insulating stripping between terminal board and ground plate from, produce creepage destruction, the insulating properties of terminal box can be improved.Especially driven by DC-to-AC converter, be applicable to the motor from DC-to-AC converter, coiling being applied to excessive surge voltage.
Accompanying drawing explanation
Fig. 1 (a) is the figure of the planar structure of the terminal box representing embodiment 1.
Fig. 1 (b) is the figure of the A-A cross section structure of the terminal box representing embodiment 1.
Fig. 2 (a) is the figure of voltage to earth when representing that voltage rising time is larger and coil voltage.
Fig. 2 (b) is the figure of voltage to earth when representing that voltage rising time is less and coil voltage.
Fig. 3 is the figure of the relation representing voltage rising time and the first coil voltage share rate.
Fig. 4 is the figure of the electric motor system representing the general Driven by inverter that the present invention applies.
Fig. 5 is the figure of the PWM voltage waveform representing general inverter.
Fig. 6 is the figure of the outward appearance representing general motor.
Fig. 7 is the figure of the radial section representing general motor.
Fig. 8 (a) represents that the stator winding of motor is the figure of the example of Δ wiring.
Fig. 8 (b) represents that the stator winding of motor is the figure of the example of Y wiring.
Fig. 9 is the figure in the cross section of the groove representing motor.
Figure 10 is the figure of the configuration representing capacitor.
Figure 11 is the figure of the A-A cross section structure of the terminal box representing embodiment 2.
Figure 12 is the figure of the A-A cross section structure of the terminal box representing embodiment 3.
Figure 13 is the figure of the A-A cross section structure of the terminal box representing embodiment 4.
Figure 14 is the figure of the A-A cross section structure of the terminal box representing embodiment 5.
Figure 15 is the figure representing the input side of terminal box and the voltage waveform of outlet side.
Embodiment
Below, based on accompanying drawing, embodiments of the invention are described.In addition, in the following description, start the electric motor system to general Driven by inverter most, after the control waveform of general PWM, general electric case body mechanism be described, carry out describing to the concrete example of corresponding plan of the present invention.
Embodiment
First, be described with reference to the electric motor system of Fig. 4 to the general Driven by inverter that the present invention applies.Driven by inverter electric motor system possesses motor 35, converter circuit 30, inverter circuit 32 and connects the cable 9 of motor 35 and inverter circuit 32, is the mechanism of the rotating torques producing motor 35.
In addition in the present invention referred to as inverter time, refer to comprise alternating voltage is converted to direct voltage converter circuit 30, make the smmothing capacitor 31 of DC voltage stability and by switching device 33, direct voltage switched and be converted to the circuit part of the inverter circuit 32 (inverter) of rectangular-wave alternating-current voltage.In addition as switching device 33, FET (FieldEffectTransistor), IGBT (InsulatedGateBipolarTransistor), MOS-FET (Metal-Oxide-SemiconductorField-EffectTransistor) etc. are used.In addition between smmothing capacitor 31 upper arm that is connected to inverter circuit 32 and underarm, the underarm ground connection of smmothing capacitor 31.
Control part 34 works for making switching device 33, it possesses: control circuit 41, it is based on the input information from other control device, magnetic pole position sensor 36, current sensor 37 etc., generates the time point signal put the switching time for controlling switching device 33; And gate circuit 42, it is based on the time point signal exported from control circuit, generates the drive singal for making switching device 33 carry out switching action.
Wherein in control circuit 41, based target torque or target velocity carry out the current instruction value of calculating motor 35, and carry out calculating voltage command value based on this current instruction value calculated and the difference of the current value detected, the modulating wave of pulse type is generated according to this voltage instruction value.As the modulating wave of the pulse type used in gate circuit 42, the most general mode is PWM (PulseWidthModulation) signal.
Fig. 5 represents general PWM waveform.This from, represent modulating wave and carrier triangular wave, U phase voltage, V phase voltage, UV voltage between lines.But for convenience of explanation, only represent the voltage waveform of U phase and V phase, omit W phase voltage waveform.
As shown in the epimere of Fig. 5, the voltage instruction be made by control circuit 41 and U phase modulating wave and V phase modulating wave, compare with as carrier triangular wave when transporting ripple.In this comparison procedure, during large as the modulating wave of voltage instruction, apply negative potential (-Vdc/2) in the size of such as carrier triangular wave, during little as the modulating wave of voltage instruction, apply positive potential (Vdc/2) in the size of carrier triangular wave.Such impulse waveform as being obtained by switching device generates U phase voltage, V phase voltage.
In addition, UV voltage between lines is obtained according to the difference of U phase voltage and V phase voltage further.In addition UV voltage between lines corresponding from rising (declines) moment of a side to the opposing party rising (decline) the moment during and generate.Like this, the potential pulse of repetition puts on motor terminal.
The waveform partial enlargement of its rising time is represented by the UV voltage between lines of Fig. 5.The waveform of the rising part of this voltage between lines relates to the characteristic of Fig. 3.The rising part of this potential pulse represent because of inverter high speed and switch and the inclination (high dV/dt) of voltage sharply, voltage waveform that is voltage rising time tr is shorter.If dV/dt comparatively large (namely voltage rising time tr is shorter), then the handoff loss produced by inverter diminishes and generates heat also less and inverter can be made miniaturized.The longitudinal axis on the right side of Fig. 3 represents capacitor temperature, also indicates the larger caloric value of dV/dt and becomes less characteristic.
According to Fig. 3, voltage rising time tr can be realized and can be covered by IGBT inverter in the region of more than 100ns, but can realize using SiC inverter in the region that switches of high speed below it, heating can be made less.That is, if use SiC at MOS-FET, then higher than Si dielectric strength in the past, can conducting resistance be reduced, reduce the conduction loss during conducting of switching device.
Fig. 6 represents the outward appearance of motor 35.Motor 35 is arranged at installation surface by installation foot 7.Produce the magnetic part of rotary driving force utilize shell 1 and end cap 2 and insulated, be kept.By the axle 4 given prominence to from framework load transfer actuating force externally.The conductor of motor 35 is formed the cooling fin 8 for the heat produced in inside being shed.In addition, the cable (inverter side cable) 9 for transmitting the alternating current that inverter applies is connected to terminal box 100.
Fig. 7 represents the radial section of motor 35.The motor 35 of the present embodiment comprises stator 5 and to configure via space in the inner circumferential side of stator 5 and by the rotor 4 that can support rotatably.Stator 5 is fixed on shell 1, and the beam warp of rotor 4 side is maintained in the shell 1 of motor 35 by bearing 3.In addition, the cable (inverter side cable) 9 being connected to inverter is drawn from the lead-out wire 10 of terminal box 100 as motor-side, is then connected to the coil 6 of each phase of stator 5 with terminal box 100 in being.
Next, the structure of Fig. 8 to the stator winding of the present embodiment is used to be described.The example that Fig. 8 (a) represents the example of Δ wiring, Fig. 8 (b) represents Y wiring, but the wiring of stator winding is whichsoever all right.In these figures, symbol 43,44,45 connects each connecting terminal from the cable 9 of each phase of terminal box, and coiled wire-wound coil is arranged between this connecting terminal.
But illustrated each coiled wire-wound coil is recited as three series coils.In addition at this, the first coil 40 in three series coils is first coil from U terminal 43, V terminal 44, W terminal 45.Having had around point 41 is circles started most of coil again, only around the circle that point 42 は coil is last.The stator winding of said Fig. 2 rises around point with only around the voltage to earth Vs of point before, and Ve measures the voltage to earth of this point 41,42 and obtains.
Fig. 9 represents the axial cutaway view of stator.Winding wire is painted overlay film insulation.Play the coil voltage Vc of said Fig. 2 before point 41 and the potential difference only around between point 42 are.In Fig. 9, play the bottom being positioned at groove S around point 41, be only positioned at the export department of groove S around point 42 and leave distance.For having made around point 41 and having stopped maximum around the potential difference of point 42, in groove S, distance has generally been made to become large.But, because of deterioration with age, motor 35 vibration etc. and existed around point 41 and the possibility only contacted around point 42.
In order to solve the problem of the premise structure of Driven by inverter motor described above, in the present invention, in the terminal box 100 of the relay point as the inverter and motor that connect Driven by inverter motor, possess and link inverter side cable 9 and the terminal board of motor side lead-out wire 10, the capacitor being accommodated in terminal box and the ground plate be electrically connected with terminal box, and by terminal board, capacitor, ground plate in series distribution.Below, the mode of accompanying drawing to the several embodiments of the invention for realizing above-mentioned situation is used to be described.
First the embodiment 1 shown in Fig. 1 is described.Fig. 1 (a) represents from vertical view during upper observation terminal box 100, and Fig. 1 (b) represents the A-A cutaway view of Fig. 1 (a).
First according to the vertical view of Fig. 1 (a), from the left side of terminal box 100, inverter side cable 9U, 9V, 9W of each phase is connected with inverter side splicing ear 11 respectively, and motor-side lead-out wire 10U, 10V, 10W of each phase in right side of terminal box 100 are connected with motor-side splicing ear 12 respectively.Be connected by the terminal board 101 of each phase between the inverter side splicing ear 11 of each phase and the motor-side splicing ear 12 of each phase.In addition, in terminal box 100, be filled with insulating material 103, guarantee each alternate insulation.
Fig. 1 (b) represents A-A cross section for u phase.Be connected by the terminal board 101 of each phase between the inverter side splicing ear 11 of each phase on the top of terminal box 100 and the motor-side splicing ear 12 of each phase, represent the state that cable 9,10 extends from each terminal 11,12.Be filled with insulating material 103 in terminal box 100 in addition, guarantee each alternate insulation.
If observe Fig. 1 (b) from short transverse in addition, then configure the ground plate 102 be electrically connected with terminal box 100 at foot, at the substrate 105 of pars intermedia configuration mounting condenser 104.In addition, at epimere configuration terminal board 101, at stage casing configuration capacitor mounting substrate 105, at hypomere configuration ground plate 102, and in order to guarantee the position relationship for filling insulating material 103 between which, and suitably at terminal board 101 and ground plate 102, and between capacitor mounting substrate 105 and ground plate 102, possesses the support component 106,107 be made up of insulating material.
Multiple capacitor connection in series-parallel preferably connects by capacitor 104 as described later that be equipped on pars intermedia in addition, and be connected to the terminal board 101 of each phase in its one end, its other end is connected to the ground plate 102 of hypomere.
The distribution box 100 of Fig. 1 is with following order manufacture.First, terminal board 101 and ground plate 102 are fixed by the support component 106 of insulating material, at terminal board 101 and the centre of ground plate 102, capacitor 104 is set on the heat conducting substrate 105 of height, and by terminal board 101, capacitor 104, ground plate 102 in series distribution.Secondly, make the insulating material 103 of the thermmohardening types such as silicon rubber flow into the bottom surface of terminal board 101, heated by baking oven and make it sclerosis.According to the present embodiment, terminal board 101 and the distance of ground plate 102 can be guaranteed fully, the heating of the eddy current produced because of principal current magnetic field can be made less.In addition, due to insulation material 103 filling terminal box 100, the stripping of therefore can not produce the vibration of motor 35, extending because of heat and the creepage electric discharge that causes.
In addition in distribution box 100, capacitor 104 is set between terminal board 101 and ground plate 102, when use with laminated ceramic capacitor be representative cheapness and capacitor 104 of miniaturization, need to make between the positive electrode of capacitor and negative electrode, to produce creepage electric discharge, space electric discharge.
For this point, disclose the minimum value of space length and the creepage distance produced because of magnitude of voltage in non-patent literature 2, the mode needing to meet this space length and creepage distance configures capacitor.Therefore, by increasing the serial number of capacitor 104, the voltage of each capacitor 104 can be reduced, therefore, it is possible to the space length reduced described in non-patent literature 2 and creepage distance.In addition, by increasing the number in parallel of capacitor 104, can direct capacitance be increased, obtain the direct capacitance required for RC filter.By being connected by capacitor series, parallel in this wise, space length, creepage distance can be guaranteed, and obtain the direct capacitance required for RC filter.
Figure 10 represents the configuration of the capacitor 104 considering above-mentioned cognition.Capacitor 104 is connected at insulating resin case 108 series and parallel connections.The two ends of the multiple capacitors 104 be connected in series are kept by leaf spring 105.By being kept by leaf spring 105, the stress with the warpage produced because of the variations in temperature of capacitor 104, the vibration of motor can be relaxed.In addition, positive electrode 110 side of the capacitor that connection in series-parallel connects is connected with terminal board 101 via terminal board side wire, and negative electrode 111 side is connected with ground plate 102 via terminal box side wire.Insulating resin case 108 is such as equipped on the substrate 105 of figure (b) and uses.
Figure 11 represents the A-A cross section structure of the terminal box of embodiment 2.In addition, planar structure identical with Fig. 1 (a) thus omit illustrate, explanation.In Figure 11, on the direction vertical relative to the direction of the principal current I flowing to motor 35 from inverter cable 9, positive electrode face 110 that is multiple and terminal board 101 same widths is installed.In addition, similarly on ground plate 102 also on the direction vertical relative to the direction of the electric current I flowing to motor 35 from inverter cable 9, negative electrode face 111 that is multiple and ground plate 102 same widths is installed, by the positive electrode face 110 of terminal board 101 and the negative electrode face 111 of ground plate 102 interlaced stacked, and insert high dielectric material in interelectrode space.
According to the embodiment 2 of Figure 11, identically with the embodiment 1 of Fig. 1, can guarantee the distance of terminal board 101 and ground plate 102 fully, the stacked direction of electrode surface 110,111 is vertical relative to principal current I in addition, and the heating of the eddy current therefore produced because of principal current magnetic field diminishes.In addition, due to insulating material filling terminal box 100, the stripping because the vibration of motor 35, heat extend therefore can not be produced and the creepage electric discharge that produces.
Figure 12 represents the A-A cross section structure of the terminal box of embodiment 3.In addition, planar structure identical with Fig. 1 (a) thus omit illustrate, explanation.The structure sandwiching target 112 at the positive electrode 110 of Figure 11 and the centre of negative electrode 111 is adopted in Figure 12.Target 112 is not connected with any one of terminal board 101 and ground plate 102.
Figure 13 represents the A-A cross section structure of the terminal box of embodiment 4.In addition, planar structure is identical with Fig. 1 (a), so omit diagram, explanation.Figure 13 sandwiches film and the structure reeled between positive electrode 110 and negative electrode 111.Reel as dielectric film and the metal forming as electrode and the structure of extraction electrode.According to embodiment 4, only change terminal box 100, therefore also easily can become the countermeasure of coil voltage rising to existing motor 35.
Figure 14 represents the A-A cross section structure of the terminal box of embodiment 5.In addition, planar structure is identical with Fig. 1 (a), so omit diagram, explanation.Represent in Figure 14 by positive electrode 110 and negative electrode 111 alternately between terminal board 101 and ground plate 102 along the example of short transverse laminated configuration.
Input side when Figure 15 represents to form direct capacitance between the terminal board 101 of the method shown in above-described embodiment in terminal box 100 and ground plate 102 and the voltage waveform of outlet side.Represent that rising is sharply relative with input side voltage waveform, outlet side voltage waveform can be interpreted as that the time variation amount of rising is larger.The repetition overvoltage can understood for supply lines side first coil of motor according to this wave form varies in addition alleviates.
As described above, according to the present embodiment, when using motor 35 or Driven by inverter electric motor system, the coil voltage of supply lines side first coil of motor 35 can be reduced, prevents winding department insulation degradation.Therefore, it is possible to provide motor 35 or Driven by inverter electric motor system, prevent from thinking when the Driven by inverter inverter surge also applied sharply be reason motor windings between insulation degradation.
The explanation of symbol
1-shell, 2-end cap, 3-bearing, 4-rotor, 5-stator, 6-coil, 7-installation foot, 8-cooling fin, 9-inverter side cable, the lead-out wire of 10-motor-side, 23-axle, 30-converter circuit, 31-smmothing capacitor, 32-inverter circuit, 33-switching device, 35-motor, the 40-the first coil, 41-rise around, 42-only around, 43-U terminal, 44-V terminal, 45-W terminal, 100-terminal box, 101-terminal board, 102-ground plate.
Claims (11)
1. a Driven by inverter motor, comprises inverter and by the motor of Driven by inverter, the feature of above-mentioned Driven by inverter motor is,
Connect inverter and motor by terminal box, and comprise in this terminal box: the terminal board linking inverter side cable and motor side lead-out wire; Be arranged at the ground plate of the bottom surface of above-mentioned terminal box; And at the capacitor that the centre of above-mentioned terminal board and above-mentioned ground plate is connected in series.
2. Driven by inverter motor according to claim 1, is characterized in that,
With regard to above-mentioned capacitor, multiple capacitor be connected in series is carried out being connected in parallel or being connected in series.
3., according to Driven by inverter motor according to claim 1 or claim 2, it is characterized in that,
The above-mentioned terminal board linking above-mentioned inverter side cable and above-mentioned motor side lead-out wire is configured in above-mentioned terminal box internal upper part, above-mentioned ground plate is arranged at above-mentioned terminal box bottom surface, the space of above-mentioned capacitor arrangements between above-mentioned terminal board and above-mentioned ground plate, and insulating material is filled with in above-mentioned terminal box.
4. Driven by inverter motor according to claim 3, is characterized in that,
Above-mentioned capacitor mounting is formed on substrate, and in order to aforesaid substrate being configured in the space between above-mentioned terminal board and above-mentioned ground plate, kept between terminal board and ground plate and between capacitor mounting substrate and ground plate by the support component be made up of insulating material.
5. Driven by inverter motor according to claim 3, is characterized in that,
On the direction vertical relative to the electric current flowing to above-mentioned motor from above-mentioned inverter cable, at above-mentioned terminal board, multiple electrode surface is installed, on the direction vertical relative to the electric current flowing to above-mentioned motor from above-mentioned inverter cable, at above-mentioned ground plate, multiple electrode surface is installed, by by above-mentioned terminal board lateral electrode face with above-mentioned ground plate lateral electrode face is interlaced stackedly forms above-mentioned capacitor, and insert insulating material in space.
6. Driven by inverter motor according to claim 5, is characterized in that,
Target is configured between interlaced stacked above-mentioned terminal board lateral electrode face and above-mentioned ground plate lateral electrode face.
7. Driven by inverter motor according to claim 3, is characterized in that,
Above-mentioned capacitor is the structure sandwiching film and be rolled between positive electrode and negative electrode, reels as dielectric film with as the metal forming of electrode and extraction electrode.
8. Driven by inverter motor according to claim 3, is characterized in that,
Above-mentioned capacitor by positive electrode and negative electrode alternately laminated and be configured between terminal board and ground plate.
9. Driven by inverter motor according to claim 4, is characterized in that,
Keep the aforesaid substrate of above-mentioned capacitor at the two ends of the casing of insulating material assembling leaf spring, clamp the above-mentioned capacitor being connected in series or being connected in parallel with leaf spring, the side of the positive electrode of leaf spring is connected to above-mentioned terminal board, by negative side distribution in above-mentioned terminal box bottom surface.
10. the Driven by inverter motor according to any one of claim 3 to claim 9, is characterized in that,
Above-mentioned insulating material is Silica hydrogel or silicon rubber.
11. Driven by inverter motor according to any one of claim 1 to claim 10, is characterized in that,
Above-mentioned capacitor is laminated ceramic capacitor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-063277 | 2013-03-26 | ||
| JP2013063277A JP6002612B2 (en) | 2013-03-26 | 2013-03-26 | Inverter drive motor |
| PCT/JP2014/050880 WO2014156232A1 (en) | 2013-03-26 | 2014-01-20 | Inverter driven motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105075074A true CN105075074A (en) | 2015-11-18 |
| CN105075074B CN105075074B (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480009603.6A Expired - Fee Related CN105075074B (en) | 2013-03-26 | 2014-01-20 | Driven by inverter motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6002612B2 (en) |
| CN (1) | CN105075074B (en) |
| WO (1) | WO2014156232A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708674A (en) * | 2020-05-20 | 2021-11-26 | 三菱电机株式会社 | Rotary electric machine drive control device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582678A (en) * | 2008-05-13 | 2009-11-18 | 富士电机电子技术株式会社 | Ac motor driving circuit and electric vehicle driving circuit |
| JP2010051134A (en) * | 2008-08-23 | 2010-03-04 | Tokyo Metropolitan Univ | Motor terminal device |
| JP2010063241A (en) * | 2008-09-02 | 2010-03-18 | Toyota Motor Corp | Motor drive system and vehicle equipped with the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2502320Y2 (en) * | 1992-03-10 | 1996-06-19 | 不二電機工業株式会社 | Serge absorption terminal block |
-
2013
- 2013-03-26 JP JP2013063277A patent/JP6002612B2/en not_active Expired - Fee Related
-
2014
- 2014-01-20 WO PCT/JP2014/050880 patent/WO2014156232A1/en active Application Filing
- 2014-01-20 CN CN201480009603.6A patent/CN105075074B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582678A (en) * | 2008-05-13 | 2009-11-18 | 富士电机电子技术株式会社 | Ac motor driving circuit and electric vehicle driving circuit |
| JP2010051134A (en) * | 2008-08-23 | 2010-03-04 | Tokyo Metropolitan Univ | Motor terminal device |
| JP2010063241A (en) * | 2008-09-02 | 2010-03-18 | Toyota Motor Corp | Motor drive system and vehicle equipped with the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708674A (en) * | 2020-05-20 | 2021-11-26 | 三菱电机株式会社 | Rotary electric machine drive control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6002612B2 (en) | 2016-10-05 |
| WO2014156232A1 (en) | 2014-10-02 |
| JP2014192912A (en) | 2014-10-06 |
| CN105075074B (en) | 2017-07-11 |
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