CN104943109A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
- Publication number
- CN104943109A CN104943109A CN201510084337.XA CN201510084337A CN104943109A CN 104943109 A CN104943109 A CN 104943109A CN 201510084337 A CN201510084337 A CN 201510084337A CN 104943109 A CN104943109 A CN 104943109A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- regeneration
- converter
- motor
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Control Of Ac Motors In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Inverter Devices (AREA)
Abstract
The invention provides an injection molding machine which can restrain stop of a motor caused by overload of a regenerative converter. The injection molding machine comprises a motor, a driving circuit of the motor, a regenerative converter which converts regenerated power from the driving circuit to alternating circuit and supplies the power to a power supply, and a controller which controls the regenerative converter. The controller monitors the regenerated load of the regenerative converter. When the regenerated load exceeds a threshold value, the controller restrains output of the regenerative converter to the power supply.
Description
Technical field
The application advocates the priority of No. 2014-074525th, the Japanese patent application based on application on March 31st, 2014.The full content of its application is by reference to being applied in this description.
The present invention relates to injection (mo(u)lding) machine.
Background technology
Injection (mo(u)lding) machine has: the mold closing mechanism carrying out the mold closing of die device, matched moulds, die sinking; The injection device of filling molding material in die device; And from the liftout attachment etc. that products formed is released by die device.Mold closing mechanism, injection device, liftout attachment have motor.
Injection (mo(u)lding) machine possesses and the alternating current from power supply is converted to galvanic converter apparatus, the direct current from converter apparatus is converted to alternating current and is supplied to the DC-to-AC converter of various motor and is connected the DC link of converter apparatus and DC-to-AC converter.
Converter apparatus is supplied to power supply regeneration converter etc. by the regenerated electric power from DC-to-AC converter is converted to alternating current is formed (such as with reference to patent document 1).Can reclaim and recycle regenerated electric power, and the energy efficiency of motor can be improved.
Patent document 1: Japanese Unexamined Patent Publication 2013-027987 publication
In the past, when regenerating the regeneration load overrate of converter, extremely stop motor as overload.
Summary of the invention
The present invention makes in view of above-mentioned problem, its object is to the injection (mo(u)lding) machine of the stopping providing a kind of motor that the overload because regenerating converter can be suppressed extremely to cause.
In order to solve above-mentioned problem, according to an embodiment of the present invention, a kind of injection (mo(u)lding) machine is provided, possesses:
Motor;
The drive circuit of this motor;
Regeneration converter, is converted to alternating current by the regenerated electric power from this drive circuit and is supplied to power supply; And
Controller, controls this regeneration converter,
This controller monitors the regeneration load of above-mentioned regeneration converter, exceedes threshold time limit system from above-mentioned regeneration converter to the output of above-mentioned power supply at above-mentioned regeneration load.
The effect of invention:
According to an embodiment of the present invention, can provide a kind of and can suppress the injection (mo(u)lding) machine that the overload because regenerating converter is abnormal and motor that is that cause stops.
Accompanying drawing explanation
Fig. 1 is the figure of the circuit of the injection (mo(u)lding) machine representing one embodiment of the present invention.
Fig. 2 is the flow chart of the process of the controller representing one embodiment of the present invention.
Symbol description
10 motors
20 DC-to-AC converters
30 DC links
31 direct current supply lines
35 capacitors
37 regeneration resistance
38 gauge taps
40 converter apparatus
41 the 1st power conversion unit
42 the 2nd power conversion unit
80 controllers
Detailed description of the invention
Below, being described for implementing mode of the present invention with reference to accompanying drawing, in the drawings and in which, giving identical or corresponding symbol for identical or corresponding structure and omitting the description.
Fig. 1 is the figure of the circuit of the injection (mo(u)lding) machine representing one embodiment of the present invention.Injection (mo(u)lding) machine possesses motor 10, the DC-to-AC converter 20 as drive circuit, DC link 30, regeneration resistance 37, gauge tap 38, converter apparatus 40 and controller 80 etc.
Motor 10 can for matched moulds motor, injection motor, measure motor, eject in motor etc. any one.Matched moulds motor makes the relative fixation clip of movable pressure plate retreat, and carries out the mold closing of die device, matched moulds, die sinking.Die device is such as made up of fixed half and moving half, and cover half is arranged on the face opposed with movable pressure plate in fixation clip, and dynamic model is arranged on the face opposed with fixation clip in movable pressure plate.Injection motor advances by making the screw rod be disposed in heating cylinder, is penetrated by the moulding material in screw rod front and be filled in die device from heating cylinder.Moulding material is forwards carried along the spiral helicine groove be formed on screw rod by making the screw rod be disposed in heating cylinder rotate by measure motor, and moulding material is accumulated in screw rod front.Can replace screw rod in heating cylinder and arrange plunger, motor 10 can make plunger retreat.Ejecting motor makes the movable member in die device retreat by making knock-pin retreat, and is ejected by products formed from die device.In Fig. 1, the number of motor 10 is one, also can be multiple.
In addition, when the number of motor 10 is multiple, multiple power conversion unit be made up of DC-to-AC converter 20, DC link 30, converter apparatus 40 can be set, also can only arranges one, and multiple motor 10 is in parallel.
Direct current from DC link 30 or converter apparatus 40 is converted to alternating current and is supplied to motor 10 by DC-to-AC converter 20.DC-to-AC converter 20 such as has three legs be made up of two switch elements (leg).In addition, the number of leg is not particularly limited.As the concrete example of switch element, such as, can enumerate MOSFET (Metal Oxide Semiconductor Filed-EffectTransistor), IGBT (Insulated Gate Bipolar Transistor), bipolar transistor etc.Relatively each switch element anti-parallel connection has diode.Diode can be built in each switch element.The regenerated electric power produced when motor 10 slows down is supplied to converter apparatus 40 or DC link 30 via diode.
DC link 30 comprises two direct current supply lines 31 and capacitor 35.Two direct current supply line 31 interconnection inverter devices 20 and converter apparatus 40.Each direct current supply line 31 is branched off into direct current supply line 31-1 and direct current supply line 31-2 at branch point.A direct current supply line 31-1 is connected with the 1st power conversion unit 41 set on converter apparatus 40, and another root direct current supply line 31-2 is connected with the 2nd power conversion unit 42 set on converter apparatus 40.Capacitor 35 makes DC voltage (hereinafter referred to as " DC the link voltage ") smoothing between two direct current supply lines 31.
Regeneration resistance 37 consumes the regenerated electric power from DC-to-AC converter 20.Gauge tap 38 controls the action of regeneration resistance 37.Regeneration resistance 37 and gauge tap 38 are connected in series, and relative capacitor 35 is connected in parallel.Gauge tap 38 is by formations such as switch elements.When gauge tap 38 is opened, electric current flows to regeneration resistance 37, and regenerated electric power is converted into heat and is consumed.When gauge tap 38 cuts out, not streaming current in regeneration resistance 37, regenerated electric power is accumulated in capacitor 35.
Converter apparatus 40 has the 1st power conversion unit 41 and the 2nd power conversion unit 42 in parallel.Alternating current from power supply 12 is converted to direct current and is supplied to DC-to-AC converter 20 or DC link 30 by the 1st power conversion unit 41.1st power conversion unit 41 is such as three-phase bridge circuit, comprises six diodes.
Regenerated electric power from DC-to-AC converter 20 is converted to alternating current and is supplied to power supply 12 by the 2nd power conversion unit 42.2nd power conversion unit 42 such as has three legs be made up of two switch elements.In addition, the number of leg is not particularly limited.Relatively each switch element anti-parallel connection has diode.Diode can be built in each switch element.2nd power conversion unit 42 is equivalent to regeneration converter described in technical scheme.
2nd power conversion unit 42, owing to comprising six diodes same with the 1st power conversion unit 41, therefore, it is possible to the alternating current from power supply 12 is converted to direct current, and is supplied to DC-to-AC converter 20 or DC link 30.
In addition, the converter apparatus 40 of present embodiment is made up of the 1st power conversion unit 41 be connected in parallel and the 2nd power conversion unit 42, but also can only be made up of the 2nd power conversion unit 42, and this structure is not particularly limited.
AC power cord 61 connects power supply 12 and converter apparatus 40.Each AC power cord 61 is branched into AC power cord 61-1 and AC power cord 61-2 at branch point.An AC power cord 61-1 is connected with the 1st power conversion unit 41, and another root AC power cord 61-2 is connected with the 2nd power conversion unit 42.
Controller 80 has the storage parts such as memory and CPU (Central Processing Unit), controls converter apparatus 40, DC-to-AC converter 20 by performing by CPU the control program be stored in storage part.
Controller 80 generates the pwm signal being used for carrying out PWM (Pulse Width Modulation: pulse width modulation) and controlling, and exports to DC-to-AC converter 20.Each switch element of DC-to-AC converter 20 carries out switch according to the pwm signal carrying out self-controller 80, and CD-ROM drive motor 10.
When motor 10 slows down, generate regenerated electric power by the induced electromotive force of motor 10.Regenerated electric power is supplied to DC link 30 etc. via DC-to-AC converter 20, and charges to capacitor 35.Its result, DC link voltage rises.On the other hand, time when motor 10 accelerates or at the uniform velocity, if capacitor 35 discharges, then DC link voltage declines.DC link voltage can be detected by voltage detector 36.Voltage detector 36 will represent that the signal of DC link voltage exports to controller 80.
Controller 80 monitors DC link voltage, when DC link voltage is more than the 1st threshold value, generates the control signals such as pwm signal, and exports to the 2nd power conversion unit 42.Each switch element of the 2nd power conversion unit 42 carries out switch according to the control signal carrying out self-controller 80, and regenerated electric power is converted to alternating current and is supplied to power supply 12.Can reclaim and recycle regenerated electric power, and the energy efficiency of motor 10 can be improved.Further, can the overcurrent of suppression capacitor 35, and can the damage of suppression capacitor 35.By power supply regenerative capacitor 35 discharge and DC link voltage be the 2nd threshold value (the 2nd threshold value≤the 1st threshold value) below time, controller 80 stops the regeneration actions of the 2nd power conversion unit 42, and the electric discharge of stopping capacitor 35.
In addition, the control of the 2nd power conversion unit 42 can not control for PWM, such as, can be that 120 ° of energisings control.
Fig. 2 is the flow chart of the process of the controller representing one embodiment of the present invention.In the step S12 of Fig. 2, controller 80 monitors the regeneration load I of the 2nd power conversion unit 42.The regeneration load I of the 2nd power conversion unit 42 can be represented by the electric current exported from the 2nd power conversion unit 42 to power supply 12, and is monitored by current detector 88.Current detector 88 detects the electric current of the AC power cord 61-2 of each phase, and will represent that the signal of this electric current exports to controller 80.
In addition, the current detector 88 of present embodiment detects the electric current of the AC power cord 61-2 of each phase, but also can detect the electric current of the AC power cord 61-2 of more than 1 phase.Further, current detector 88 can detect the electric current of direct current supply line 31-2.Any occasion can monitor the regeneration load I of the 2nd power conversion unit 42.
In step S14, controller 80 checks whether regeneration load I exceedes threshold value I0.Regeneration load I can be represented by the virtual value of electric current, and threshold value I0 can be rated value.Current cycle changes, and is represented by function of time f (t).The virtual value of electric current is, by the value after function f (t) square at cycle T integration, and by its integrated value F cycle T except and the square root of value that obtains.Cycle T is molding cycle time.When rated value is the constant regeneration action of continuity ground, the temperature of the 2nd power conversion unit 42 is the higher limit of below allowable temperature.Virtual value can calculate with the ratio of relative rated value, and this ratio represents also passable with percentage.In addition, threshold value can be set as also lower than rated value.
When regeneration load I is below threshold value I0, ("No" of step S14), controller 80 turns back to step S12 and continues to carry out the later process of step S12.On the other hand, when regeneration load I exceedes threshold value I0 ("Yes" in step S14), controller 80 limits the output (step S16) from the 2nd power conversion unit 42 to power supply 12.
Compare to reduce etc. when regeneration load exceedes threshold value by such as making the virtual value from the 2nd power conversion unit 42 to the electric current of power supply 12 and realize export-restriction.Export-restriction comprises output and stops.Export and stop being undertaken by making each switch element of the 2nd power conversion unit 42 close (being called that servo is closed).
The descending through of current effective value make current peak decline, shorten the time of current flowing or carry out both etc. realize.Controller 80, in order to shorten the time of current flowing, intermittently can carry out the regeneration actions of the 2nd power conversion unit 42.
The decline of current effective value also can extend molding cycle time to realize by the stand-by time of additional motor 10.Controller 80 can judge, when extending molding cycle time, in the scheduled time, whether predetermined the shaping of injection number may.At the end of predetermined injection number shaping does not have in the scheduled time, controller 80 can adjust stand-by time.
According to the present embodiment, when regeneration load I exceedes threshold value I0, controller 80 limits the output from the 2nd power conversion unit 42 to power supply 12.Therefore, it is possible to suppress the stopping that the overload because of the 2nd power conversion unit 42 causes extremely.
Then, controller 80 controls gauge tap 38 and works (step S18) to make regeneration resistance 37.Electric current flows through regeneration resistance 37, and regenerated electric power is converted into heat and is consumed.Therefore, it is possible to the rising of the DC link voltage suppressing the output because limiting from the 2nd power conversion unit 42 to power supply 12 and cause.
Regeneration resistance 37 can consume regenerated electric power at DC link voltage more than during the 3rd threshold value.When in the power consumption because regenerating resistance 37, capacitor 35 discharges, DC link voltage is the 4th threshold value (the 4th threshold value≤the 3rd threshold value) below, controller 80 makes the power consumption of regeneration resistance 37 stop.
In addition, which first carries out for the work (step S18) of regeneration resistance 37 and export-restriction (step S16), also can carry out simultaneously.
Then, controller 80, after predetermined condition is set up, stops motor 10 (step S20), and stops the periodic duty repeatedly manufacturing products formed, terminates this process.
As the stop condition of motor 10, the operation such as can enumerating injection (mo(u)lding) machine is that die sinking operation terminates or the operation of injection (mo(u)lding) machine terminates for ejecting operation.At the end of these operations, the state of injection (mo(u)lding) machine becomes the state roughly the same with at the end of circular flow, therefore there is the harmful effect that circular flow stops hardly.
In addition, when the rated value of regeneration resistance 37 is greater than the electric power consumption because of the restriction of power supply regenerative based on regeneration resistance 37 in remaining regenerated electric power, the stopping (step S20) of motor 10 can not be carried out, can run by persistent loop.
Above, the embodiment etc. of injection (mo(u)lding) machine is illustrated, but the present invention is not limited to above-mentioned embodiment etc., can various distortion and improvement be carried out in the scope of the aim of the present invention of technical scheme record.
Such as, in above-mentioned embodiment, by the restriction because of power supply regenerative, remaining regenerated electric power is consumed by regeneration resistance 37, but also can be accumulated in other capacitors (hereinafter referred to as " reaction condenser ") different from capacitor 35.Reaction condenser is same with regeneration resistance 37, can be connected in parallel, controlled by gauge tap with capacitor 35.The electric power of accumulation is supplied to DC-to-AC converter 20 by reaction condenser.Also can use reaction condenser and regeneration resistance 37 simultaneously.
Claims (6)
1. an injection (mo(u)lding) machine,
Possess:
Motor;
The drive circuit of this motor;
Regeneration converter, is converted to alternating current by the regenerated electric power from this drive circuit and is supplied to power supply; And
Controller, controls this regeneration converter,
This controller monitors the regeneration load of above-mentioned regeneration converter, exceedes threshold time limit system from above-mentioned regeneration converter to the output of above-mentioned power supply at above-mentioned regeneration load.
2. injection (mo(u)lding) machine as claimed in claim 1,
There is the regeneration resistance consumed from the regenerated electric power of above-mentioned drive circuit,
Above-mentioned controller makes above-mentioned regeneration resistance performance when above-mentioned regeneration load exceedes threshold value.
3. injection (mo(u)lding) machine as claimed in claim 1 or 2,
Have:
Regeneration resistance, consumes the regenerated electric power from above-mentioned drive circuit; And
DC link, connects above-mentioned drive circuit and above-mentioned regeneration converter,
Above-mentioned controller makes above-mentioned regeneration resistance performance when the voltage of above-mentioned DC link exceedes threshold value.
4. as the injection (mo(u)lding) machine in claim 1-3 as described in any one,
There is reaction condenser, accumulate the regenerated electric power from above-mentioned drive circuit,
Above-mentioned controller makes above-mentioned reaction condenser work when above-mentioned regeneration load exceedes threshold value.
5. as the injection (mo(u)lding) machine in claim 1-4 as described in any one,
Have:
Reaction condenser, accumulates the regenerated electric power from above-mentioned drive circuit; And
DC link, connects above-mentioned drive circuit and above-mentioned regeneration converter,
Above-mentioned controller makes above-mentioned reaction condenser work when the voltage of above-mentioned DC link exceedes threshold value.
6. as the injection (mo(u)lding) machine in claim 1-5 as described in any one,
Above-mentioned controller stops described motor when above-mentioned regeneration load exceedes threshold value after predetermined condition is set up.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-074525 | 2014-03-31 | ||
| JP2014074525A JP6234869B2 (en) | 2014-03-31 | 2014-03-31 | Injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104943109A true CN104943109A (en) | 2015-09-30 |
| CN104943109B CN104943109B (en) | 2017-08-29 |
Family
ID=54158430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510084337.XA Active CN104943109B (en) | 2014-03-31 | 2015-02-16 | Injection (mo(u)lding) machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6234869B2 (en) |
| CN (1) | CN104943109B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107534402A (en) * | 2016-04-22 | 2018-01-02 | 三菱电机株式会社 | PN buses sharing system, regenerating control device and method for controlling reproduction |
| CN112313864A (en) * | 2018-06-26 | 2021-02-02 | 法雷奥西门子新能源汽车(德国)有限公司 | Control device and method for discharging direct-current link capacitor, power converter and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017217834A (en) * | 2016-06-08 | 2017-12-14 | 株式会社日本製鋼所 | Motor-driven injection molding machine provided with plural power feed systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020180080A1 (en) * | 2001-05-09 | 2002-12-05 | Masamitsu Suzuki | Method and apparatus for controlling molding machine |
| JP2007130978A (en) * | 2005-11-14 | 2007-05-31 | Sumitomo Heavy Ind Ltd | Control method of injection moulding machine |
| CN102896732A (en) * | 2011-07-26 | 2013-01-30 | 住友重机械工业株式会社 | Injection molding machine |
| JP2013027990A (en) * | 2011-07-26 | 2013-02-07 | Sumitomo Heavy Ind Ltd | Injection molding machine |
| JP2013244710A (en) * | 2012-05-29 | 2013-12-09 | Ube Machinery Corporation Ltd | Method for displaying load condition of electric injection molding machine and driving device of electric injection molding machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61231883A (en) * | 1985-04-08 | 1986-10-16 | Toshiba Corp | Crane controller |
| JPS6226192U (en) * | 1985-07-31 | 1987-02-17 | ||
| JPS62126089A (en) * | 1985-11-27 | 1987-06-08 | 株式会社日立製作所 | Controller for alternating current elevator |
| JPH05227759A (en) * | 1992-02-14 | 1993-09-03 | Mitsubishi Electric Corp | Power regenerating unit |
| JPH06319292A (en) * | 1993-04-28 | 1994-11-15 | Yaskawa Electric Corp | Load drive equipment and drive method |
| JP3708728B2 (en) * | 1998-11-05 | 2005-10-19 | 日創電機株式会社 | Motor drive device for injection molding machine |
| JP3451480B2 (en) * | 2000-02-22 | 2003-09-29 | 住友重機械工業株式会社 | Injection molding machine |
| JP4074497B2 (en) * | 2001-10-19 | 2008-04-09 | 住友重機械工業株式会社 | Injection molding machine and method for protecting the injection molding machine |
| JP2004154961A (en) * | 2002-11-01 | 2004-06-03 | Toshiba Mach Co Ltd | Drive control device of electromotive injection molding machine having regenerative function |
| JP4735076B2 (en) * | 2005-06-27 | 2011-07-27 | 日産自動車株式会社 | Motor control device |
| JP2008245426A (en) * | 2007-03-27 | 2008-10-09 | Toyota Motor Corp | Controller and control method of motor |
| JP5166389B2 (en) * | 2009-11-04 | 2013-03-21 | 山洋電気株式会社 | Motor drive power supply and regeneration method using the power supply |
-
2014
- 2014-03-31 JP JP2014074525A patent/JP6234869B2/en active Active
-
2015
- 2015-02-16 CN CN201510084337.XA patent/CN104943109B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020180080A1 (en) * | 2001-05-09 | 2002-12-05 | Masamitsu Suzuki | Method and apparatus for controlling molding machine |
| JP2007130978A (en) * | 2005-11-14 | 2007-05-31 | Sumitomo Heavy Ind Ltd | Control method of injection moulding machine |
| CN102896732A (en) * | 2011-07-26 | 2013-01-30 | 住友重机械工业株式会社 | Injection molding machine |
| JP2013027990A (en) * | 2011-07-26 | 2013-02-07 | Sumitomo Heavy Ind Ltd | Injection molding machine |
| JP2013244710A (en) * | 2012-05-29 | 2013-12-09 | Ube Machinery Corporation Ltd | Method for displaying load condition of electric injection molding machine and driving device of electric injection molding machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107534402A (en) * | 2016-04-22 | 2018-01-02 | 三菱电机株式会社 | PN buses sharing system, regenerating control device and method for controlling reproduction |
| CN107534402B (en) * | 2016-04-22 | 2019-01-18 | 三菱电机株式会社 | PN bus sharing system, regenerating control device and method for controlling reproduction |
| CN112313864A (en) * | 2018-06-26 | 2021-02-02 | 法雷奥西门子新能源汽车(德国)有限公司 | Control device and method for discharging direct-current link capacitor, power converter and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015196293A (en) | 2015-11-09 |
| JP6234869B2 (en) | 2017-11-22 |
| CN104943109B (en) | 2017-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9787084B2 (en) | Motor driving device | |
| US9923477B2 (en) | PWM rectifier including capacitance calculation unit | |
| US8493018B2 (en) | Fast switching for power inverter | |
| US8664907B2 (en) | Fast switching for power inverter | |
| US20140070743A1 (en) | Motor drive device with alarm level setting unit | |
| US9525363B2 (en) | Method for voltage dip compensation of inverter | |
| CN108809120B (en) | Converter device | |
| US8760898B2 (en) | Fast switching for power inverter | |
| EP2587660B1 (en) | Injection molding machine and power source regeneration converter | |
| CN105490577A (en) | Motor control apparatus having function of discharging energy remaining in DC link | |
| CN104943109A (en) | Injection molding machine | |
| US8441826B2 (en) | Fast switching for power inverter | |
| JP5851658B2 (en) | Overload limit in peak power operation | |
| CN104995831A (en) | AC to AC converter and method of operation thereof for soft starting motors and other applications | |
| JP2017217836A (en) | Motor-driven injection molding machine provided with power storage apparatus | |
| CN106253698A (en) | Motor drive | |
| CN104943110B (en) | Injection (mo(u)lding) machine | |
| EP2936672B1 (en) | Bridge leg | |
| WO2012127665A1 (en) | Control apparatus and control method of synchronous motor | |
| CN102801383A (en) | Alternating current motor driving device with charging function and charging method thereof | |
| CN202586862U (en) | Alternating current motor drive device with charging function | |
| KR20130131445A (en) | Alternating current motor drive device | |
| CN108258719B (en) | Method for controlling converter to absorb active power, converter controller and converter | |
| US9356538B2 (en) | Multiaxial driving apparatus | |
| Tsuruta et al. | Verification of efficient operation for high power DC chopper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |