CN105451922A - Power supply control apparatus - Google Patents
Power supply control apparatus Download PDFInfo
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- CN105451922A CN105451922A CN201480043999.6A CN201480043999A CN105451922A CN 105451922 A CN105451922 A CN 105451922A CN 201480043999 A CN201480043999 A CN 201480043999A CN 105451922 A CN105451922 A CN 105451922A
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- input voltage
- voltage
- inverter
- output
- power control
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
This power supply control apparatus has an input terminal, inverter unit, output terminal, input voltage detection unit, first storage unit, second storage unit, and control unit. The first storage unit is connected to the input voltage detection unit, and stores a first input voltage detected by means of the input voltage detection unit while the inverter unit is stopped. The second storage unit is connected to the input voltage detection unit, and stores a second input voltage detected by the input voltage detection unit while the inverter unit is oscillating. The control unit is connected to the first storage unit and the second storage unit, compares the first input voltage and the second input voltage with each other, and specifies a power supply as a power generator in the cases where a difference between the first input voltage and the second input voltage is larger than a predetermined voltage.
Description
Technical field
The disclosure relates to the electric power that the input commercial power that produces of source power supply or engine-driven electric generator (enginegenerator) produce, and the power control of electric power after output transform.Particularly relate to when inputting the electric power that engine-driven electric generator produces, to the function that the electric power exported controls.
Background technology
In the past, the external power source of supply unit adopted the source power supply or engine-driven electric generator that export commercial power (AC commercial electric power).In building industry, in order to carry out new facility work, repairing construction, reparation construction, the strengthening construction of building or road etc., sometimes easily will move and can guarantee that jumbo engine-driven electric generator uses as external power source.
Existing supply unit has following function: detect the input voltage from external power source input, judges that input voltage is whether in specified permissible range, if input voltage is outside specified permissible range, then carries out alarm display.And then existing supply unit also has following function: judge that input voltage is whether in maximum permissible range, if input voltage is outside maximum permissible range, then inverter is made to stop (for example, referring to patent document 1).
Below, Fig. 8 is utilized to be described existing supply unit.Fig. 8 is the figure of the concise and to the point formation representing existing supply unit.
As shown in Figure 8, supply unit 201 has input terminal 202, input side rectification part 203, smmothing capacitor 204, inverter 205, transformer 206, outlet side rectification part 207, lead-out terminal 208a and lead-out terminal 208b, inverter control portion 209, power voltage detecter 210, current detector 211, voltage comparator 212, greatest lower bound reference generator 213, maximum upper limit reference generator 214, inverter stop control unit 215, voltage comparator 216, specified lower limit reference generator 217, rated limit reference generator 218, with alarm display part 219.And, from external power source 220 to supply unit 201 input electric power.
Three-phase or single-phase alternating electromotive force is inputted from external power source 220 to the input terminal 202 of supply unit 201.Input side rectification part 203 carries out rectification to inputted alternating electromotive force.Smmothing capacitor 204 makes the direct current power by input side rectification part 203 after rectification level and smooth.Inverter 205 accepts the instruction from inverter control portion 209, inputted direct current power is transformed to the alternating electromotive force of high frequency.The alternating electromotive force of transformer 206 to the high frequency generated by inverter 205 at primary side (input side) is carried out transformation and outputs to secondary side (outlet side).The alternating electromotive force of outlet side rectification part 207 to the high frequency by transformer 206 after transformation carries out rectification.Direct current power by outlet side rectification part 207 after rectification, outputs to outside from the lead-out terminal 208a of supply unit 201 and lead-out terminal 208b as output power.In addition, in this manual, " voltage " and " electric current " is generically and collectively referred to as " electric power "." alternating electromotive force " is the general name of " alternating voltage " and " alternating current ", " direct current power " is the general name of " DC voltage " and " DC current ", " input electric power " is the general name of " input voltage " and " input current ", and " output power " is the general name of " output voltage " and " output current ".
Current detector 211 detects the output current exported from lead-out terminal 208b, and the output signal proportional with output current is outputted to inverter control portion 209.
Power voltage detecter 210 detects and is input to the alternating voltage of supply unit 201 and output detections signal from external power source 220.This detection signal is passed to voltage comparator 212 and voltage comparator 216.
If more than the threshold value that the voltage detected by power voltage detecter 210 exports for greatest lower bound reference generator 213, and, for below the threshold value that maximum upper limit reference generator 214 exports, then voltage comparator 212 is judged to be in maximum permissible range.When the threshold value exported when the threshold value that the voltage detected by power voltage detecter 210 exports lower than greatest lower bound reference generator 213 or higher than maximum upper limit reference generator 214, voltage comparator 212 is judged to be in outside maximum permissible range.Voltage comparator 212 when being judged to be that input voltage is in outside maximum permissible range, in order to the inverter 205 etc. of protection structure supply unit 201, to inverter stop control unit 215 output voltage abnormal signal.The inverter stop control unit 215 receiving electric voltage exception signal supplies stop instruction signal to inverter control portion 209, and inverter control portion 209 makes inverter 205 stop.
In addition, more than the threshold value exported for specified lower limit reference generator 217 at the voltage detected by power voltage detecter 210, further, for below the threshold value that rated limit reference generator 218 exports when, voltage comparator 216 is judged to be in specified permissible range.When the threshold value exported when the threshold value that the voltage detected by power voltage detecter 210 exports lower than specified lower limit reference generator 217 or higher than rated limit reference generator 218, voltage comparator 216 is judged to be in outside specified permissible range.Now, power supply voltage variation signal is supplied to alarm display part 219 by voltage comparator 216.Thus, alarm display part 219 carries out lighting of red colored lamp, display alarm.In addition, the signal level of specified lower limit reference signal is higher than the signal level of greatest lower bound reference signal, and the signal level of rated limit reference signal is lower than the signal level of maximum upper limit reference signal.
Like this, by setting specified permissible range in maximum permissible range, can, before the inverter 205 of supply unit 201 stops, operator be impelled to note.Existing supply unit 201, if be in specified permissible range outward from the input voltage of external power source 220, carries out alarm display.In addition, existing supply unit 201, if input voltage is in greatest extent outside scope, then by making inverter 205 stop protecting inverter 205 etc.
At first technical literature
Patent document
Patent document 1:JP JP 2001-212669 publication
Summary of the invention
But, in existing supply unit 201, cannot determine that external power source is source power supply or engine-driven electric generator.In addition, there is output voltage situation jumpy in engine-driven electric generator.If supply unit 201 is connected with engine-driven electric generator, and comparatively large to the variation of the input voltage of supply unit 201, then input voltage exceedes specified permissible range and maximum permissible range quickly sometimes.Now, inverter 205 has little time to stop, and likely causes inverter 205 impaired due to the voltage outside maximum permissible range.
Object of the present disclosure is, determines that the supply unit of the outside be connected with power control is source power supply or engine-driven electric generator.And then, even if object is also, when external power source is engine-driven electric generator, also to protect the inverter of power control.
In order to reach above-mentioned purpose, power control of the present disclosure has input terminal, inverter, lead-out terminal, input voltage measurement portion, the 1st storage part, the 2nd storage part and control part.Input terminal input is from the input voltage of power supply.Inverter is connected with input terminal, carries out inverter control to input voltage.Lead-out terminal is connected with inverter via transformer, exports the output current from transformer.Input voltage measurement portion is connected between input terminal and inverter, detects input voltage.1st storage part is connected with input voltage measurement portion, stores the 1st input voltage that input voltage measurement portion in inverter stopping is detected.2nd storage part is connected with input voltage measurement portion, stores the 2nd input voltage that input voltage measurement portion in inverter vibration is detected.Control part is connected with the 1st storage part and the 2nd storage part, compares the 1st input voltage and the 2nd input voltage, determines whether power supply is generator.Power supply, when the difference of the 1st input voltage and the 2nd input voltage is greater than given voltage, is defined as generator by control part.
As above, power control determination external power source of the present disclosure is source power supply or engine-driven electric generator.And then, when determining external power source and being engine-driven electric generator, power control of the present disclosure monitors output current and input voltage, is judged to be that the input voltage of power control is abnormal when having exceeded given condition.Then, power control of the present disclosure, based on unusual determination, makes the inverter in vibration stop, therefore, it is possible to prevent the damage of inverter.
Accompanying drawing explanation
Fig. 1 is the figure of the formation representing power control in embodiment of the present disclosure 1 and engine-driven electric generator.
Fig. 2 is the figure of the relation of the action of the power control represented in embodiment of the present disclosure 1 and the output voltage of engine-driven electric generator.
Fig. 3 is the comparative example as embodiment of the present disclosure 1, represents the figure of the relation of the action of existing supply unit and the output voltage of engine-driven electric generator.
Fig. 4 is the figure of the formation representing power control in embodiment of the present disclosure 2 and engine-driven electric generator.
Fig. 5 is the figure of the formation representing power control in embodiment of the present disclosure 3 and engine-driven electric generator.
Fig. 6 is the figure of the formation representing welder in embodiment of the present disclosure 4 and engine-driven electric generator.
Fig. 7 is the figure of the formation representing power control in embodiment of the present disclosure 5 and engine-driven electric generator.
Fig. 8 is the figure of the formation representing existing supply unit.
Detailed description of the invention
(embodiment 1)
Below, Fig. 1 to Fig. 3 is utilized to be described embodiment 1.
Fig. 1 is the schematic diagram be connected with the engine-driven electric generator 101 as external power source in present embodiment, to power control 1.Fig. 2 be represent in present embodiment, the figure of the relation of the output voltage of the action of power control 1 and engine-driven electric generator 101.Fig. 3 is the comparative example as present embodiment, represents the figure of the relation of the action of existing supply unit 201 and the output voltage of engine-driven electric generator 101.
As shown in Figure 1, power control 1 has input terminal 2, the 1st rectification part 3, inverter 4, main transformer 5, the 2nd rectification part 6, lead-out terminal 7a and lead-out terminal 7b, input voltage measurement portion 8, the 1st storage part 9, the 2nd storage part 10, control part 11, output electric current measure portion 12 and drive division 13.
As shown in Figure 1, engine-driven electric generator 101 (generator) has engine 102, generator 103, armature winding 104, voltage setting device 105, automatic tension regulator 106 and lead-out terminal 107.In the present embodiment, the alternating electromotive force produced by the engine-driven electric generator 101 as power supply is imported into power control 1.
Then, below the action of power control 1 and engine-driven electric generator 101 is described.
First, the action of power control 1 is described.Input terminal 2 is inputted to the three-phase or single-phase alternating electromotive force that are produced by engine-driven electric generator 101.The alternating electromotive force that engine-driven electric generator 101 produces such as voltage is 200V, frequency is 60Hz.In addition, as power supply, except engine-driven electric generator 101, it also can be the source power supply exporting commercial power.
1st rectification part 3 is connected with input terminal 2, is direct current power by the alternating electromotive force rectification from input terminal 2.
Inverter 4 is connected with the 1st rectification part 3, is made up of not shown power semiconductor.The switch motion of the power semiconductor of inverter 4 is controlled by the drive singal from drive division 13.Direct current power from the 1st rectification part 3 is transformed to the alternating electromotive force of high frequency by inverter 4.In addition, as power semiconductor, such as there is IGBT (InsulatedGateBipolarTransistor, insulated gate bipolar transistor), MOSFET (Metal-OxideSemiconductorFieldEffectTransistor, mos field effect transistor) etc.In addition, as the switch motion of power semiconductor, such as, PWM is had to control (PulseWidthModulation pulse width modulation controlled) etc.In addition, high frequency refers to the frequency of oscillation of such as 10kHz to 50kHz.
Main transformer 5 carries out transformation to export the alternating electromotive force of high frequency to the alternating electromotive force of the high frequency from inverter 4.The alternating electromotive force such as voltage of the high frequency after transformation is 20V, and frequency is 10kHz.
The alternating electromotive force rectification of the high frequency after the transformation from main transformer 5 is direct current power by the 2nd rectification part 6.Direct current power from the 2nd rectification part 6 exports from lead-out terminal 7a and lead-out terminal 7b to the outside of power control 1.
Output electric current measure portion 12 is inserted between the 2nd rectification part 6 and lead-out terminal 7b, detects the output current of power control 1.And then output electric current measure portion 12 is connected with control part 11, the output current signal proportional with output current is outputted to control part 11.
Input voltage measurement portion 8 is inserted between input terminal 2 and the 1st rectification part 3, detects the input voltage of inputted alternating electromotive force.If the alternating electromotive force now inputted is three-phase, the voltage of the arbitrary phase in the voltage of whole three-phase or three-phase is detected, if single-phase, single-phase voltage is detected.In addition, input voltage measurement portion 8 is connected with the 1st storage part 9 and the 2nd storage part 10, and the input voltage detected by input voltage measurement portion 8 is stored in the 1st storage part 9 and the 2nd storage part 10.
Control part 11 is connected with the 1st storage part 9, the 2nd storage part 10 and output electric current measure portion 12.And, to control part 11 input be stored in the 1st storage part 9 voltage (the 1st input voltage), be stored in the voltage (the 2nd input voltage) of the 2nd storage part 10 and the output current signal from output electric current measure portion 12.Control part 11 carries out the determination of computing, external power source based on inputted information or signal, generates output order, and outputs to drive division 13.
Drive division 13 is connected with control part 11 and inverter 4, based on the output order from control part 11, exports the drive singal of the signal of the switch motion as power semiconductor to inverter 4.When the voltage of whole three-phase is detected in input voltage measurement portion 8, the 1st storage part 9 and the 2nd storage part 10 can store three-phase voltage separately.Power control 1 as above performs an action.
Then, the action of engine-driven electric generator 101 is described.Engine 102 as power, makes the not shown rotor with magnetic pole rotate by engine-driven electric generator 101.By the rotation of rotor, the armature winding 104 being fixed on peritrochanteric is subject to electromagnetic induction, produces alternating voltage by generator 103.Armature winding 104 has the inductance composition (such as, 0.5mH to 3mH) of winding.The alternating voltage produced is adjusted by automatic tension regulator 106, to become the voltage set by voltage setting device 105.Alternating voltage after being adjusted by automatic tension regulator 106 outputs to the outside of engine-driven electric generator 101 from lead-out terminal 107.
Fig. 2 is the figure of the relation of the action of the power control 1 represented in present embodiment and the output voltage of engine-driven electric generator 101.
In fig. 2, horizontal axis representing time.In fig. 2, " operating state of inverter 4 " of the longitudinal axis represents that, under the state of power control 1 starting, inverter 4 is in stopping or is in vibration.In fig. 2, " setting voltage " of the longitudinal axis refers to the output voltage of the voltage setting device 105 using engine-driven electric generator 101 and the engine-driven electric generator 101 set." setting voltage " generally uses the virtual value of alternating voltage, but in the present embodiment, records with peak value (amplitude of alternating voltage).In fig. 2, " output voltage of engine-driven electric generator 101 " of the longitudinal axis is the alternating voltage exported from the lead-out terminal 107 of engine-driven electric generator 101.When the alternating voltage exported from engine-driven electric generator 101 is three-phase, exports phase deviation 3 voltage waveforms of 120 degree, but figure 2 illustrates the waveform of the alternating voltage of an arbitrary phase." storage destination of input voltage " of the longitudinal axis represents that what store the voltage detected by input voltage measurement portion 8 is the 1st storage part 9 or the 2nd storage part 10.
" storage destination of input voltage " is more specifically described.The voltage (the 1st input voltage) detected by input voltage measurement portion 8 in inverter 4 stops is stored in the 1st storage part 9.On the other hand, the voltage (the 2nd input voltage) detected by input voltage measurement portion 8 in inverter 4 is vibrated is stored in the 2nd storage part 10.In addition, inverter 4 vibration and stop the signal being supplied to the control part 11 of power control 1 based on the outside from power control 1 to carry out.Then, control part 11, based on this signal, identifies that inverter 4 is in stopping or is in vibration, and exports output order to drive division 13.In addition, control part 11, when inverter 4 is in stopping, indicating the voltage stored detected by input voltage measurement portion 8 to the 1st storage part 9.Then, control part 11, when inverter 4 is in vibration, indicates the voltage stored detected by input voltage measurement portion 8 to the 2nd storage part 10.
Fig. 3 be represent when engine-driven electric generator 101 is connected to existing supply unit 201, the figure of the relation of the action of supply unit 201 and the output voltage of engine-driven electric generator 101.In figure 3, horizontal axis representing time.In figure 3, " operating state of inverter 205 " of the longitudinal axis represents that, under the state of supply unit 201 starting, inverter 205 is in stopping or is in vibration.About " setting voltage " and " output voltage of engine-driven electric generator 101 ", identical with Fig. 2.In figure 3, the point different from Fig. 2 is, because supply unit 201 has smmothing capacitor 204, even if therefore when inverter 205 is vibrated, the output voltage of engine-driven electric generator 101 is also stablized.
Use Fig. 2 and Fig. 3, the action of power control 1 and engine-driven electric generator 101 is more specifically described.
Engine-driven electric generator 101 connected power control 1 inverter 4 stop in, only control part 11 power consumption of power control 1.Now, less from the load of engine-driven electric generator 101 power control 1, engine-driven electric generator 101 is with the voltage stabilization set by voltage setting device 105 ground output AC voltage.In addition, now, power control 1 by the store voltages that detected by input voltage measurement portion 8 in the 1st storage part 9.This state shown in the t1 of Fig. 2.In addition, when engine-driven electric generator 101 is connected to supply unit 201, also in the inverter 205 of supply unit 201 stops, the alternating electromotive force of stable output.This state shown in the t1 of Fig. 3.
In addition, the 1st storage part 9 stores the up-to-date voltage in the voltage detected by input voltage measurement portion 8.In other words, the 1st storage part 9 upgrades the voltage detected by input voltage measurement portion 8.
Engine-driven electric generator 101, when the inverter 4 of connected power control 1 starts vibration, increases from the load of engine-driven electric generator 101 power control 1.Therefore, the output voltage of engine-driven electric generator 101 temporarily declines.Now, the situation that automatic tension regulator 106 pairs of output voltages of engine-driven electric generator 101 export lower than the setting set by voltage setting device 105 detects, improve the output of engine 102, the adjustment of line output voltage of going forward side by side makes the output voltage of engine-driven electric generator 101 become setting voltage.Like this, engine-driven electric generator 101 adjusts the output of engine 102 according to the load of connected power control 1.Now, power control 1 by the store voltages that detected by input voltage measurement portion 8 in the 2nd storage part 10.In addition, as shown in Figure 3, when engine-driven electric generator 101 is connected to supply unit 201, if be also that the inverter 205 of supply unit 201 starts vibration, then the output voltage of engine-driven electric generator 101 temporarily declines.Then, adjusted the output of engine 102 by automatic tension regulator 106, output voltage is adjusted to setting voltage.The decline of the voltage caused by the starting of oscillation of this inverter shows the initial stage of the initial stage of the t2 of Fig. 2 and the t2 of Fig. 3.
Then, be specifically described after the initial stage of the t2 of t2 and Fig. 3 of Fig. 2.
Inverter 4 and inverter 205 carry out energising and the blocking-up of electric current repeatedly with high frequency when vibrating.About the inverter 4 of vibrating with high frequency and inverter 205, the impact on engine-driven electric generator 101 is described.
As shown in Figure 7, existing supply unit 201 possesses smmothing capacitor 204 between input side rectification part 203 and inverter 205.When external power source 220 is engine-driven electric generator 101, smmothing capacitor 204 charges to by the direct current power after input side rectification part 203 rectification according to the multiple of the frequency of the input voltage from external power source 220.Then, the multiple of frequency that performs an action with inverter 205 of smmothing capacitor 204 or approximate number discharge to charged electric power.
And then smmothing capacitor 204, when the instantaneous variation of the output of supply unit 201, can absorb this variation.When inverter 205 is vibrated and repeatedly carried out energising and the blocking-up of electric current, smmothing capacitor 204 also can Absorption Current change.Therefore, supply unit 201 independently can accept stable input voltage from engine-driven electric generator 101 with the vibration of the output variation of supply unit 201, inverter 205.Therefore, as shown in the t2 of Fig. 3, the output voltage of engine-driven electric generator 101 becomes level and smooth waveform.
In addition, such as, if supply unit 201 is the arc-welding apparatus of self-consuming electrode type, then lead-out terminal 208a and lead-out terminal 208b is connected to consutrode and welding object thing.And, based on the short circuit produced between consutrode and welding object thing or open circuit, there is the variation exported.This is an example of the output variation of instantaneous supply unit 201.
On the other hand, as shown in Figure 1, the power control 1 of present embodiment does not carry smmothing capacitor.When external power source is engine-driven electric generator 101, be directly inputted to inverter 4 by the direct current power after the 1st rectification part 3 rectification with the multiple of the frequency performed an action in inverter 4 or approximate number.So when the instantaneous variation of the output of power control 1, owing to not absorbing the smmothing capacitor of variation, therefore the input current of power control 1 becomes unstable due to this output variation.And then when inverter 4 is vibrated and repeatedly carried out energising and the blocking-up of electric current, also owing to not having smmothing capacitor, therefore the input current of power control 1 becomes unstable.Input current due to power control 1 becomes unstable, and thus the output voltage of engine-driven electric generator 101 becomes chaotic waveform as shown in the t2 of Fig. 2.
To when becoming unstable at the input current of power control 1, the output voltage of engine-driven electric generator 101 becomes unstable main cause and is described.Due to the impact that the output of power control 1 changes, from input terminal 2 input current sharply increase after, sharply decline.Thus, owing to being equipped on the inductance composition of the armature winding 104 of engine-driven electric generator 101, and counter voltage (counterelectromotivevoltage) is produced at armature winding 104.When inverter 4 is vibrated and repeatedly carried out energising and the blocking-up of electric current, also cause the energising from the input current of input terminal 2 and blocking-up, become same result.
The generate output of the engine-driven electric generator 101 of present embodiment is 1 times ~ 10 times degree of the rated capacity of power control 1.If the generate output of engine-driven electric generator 101 is close to the rated capacity of power control 1, then the armature winding 104 when vibrating to the inverter 4 of power control 1 easily at engine-driven electric generator 101 produces counter voltage.If in contrast, the external power source of the power control 1 of present embodiment is source power supply, then be not subject to the impact of the vibration of the inverter 4 of power control 1, power control 1 can obtain stable input voltage.
Next, the inverter 4 of power control 1 is stopped.Now, the load of power control 1 declines, and the output voltage of engine-driven electric generator 101 temporarily rises.Same when starting to vibrate with the inverter 4 of power control 1, the adjustment that the automatic tension regulator 106 of engine-driven electric generator 101 carries out output voltage makes output voltage become setting output voltage.Now, power control 1 by the store voltages that detected by input voltage measurement portion 8 in the 1st storage part 9.In addition, when engine-driven electric generator 101 is connected to supply unit 201, if be also that the inverter 205 of supply unit 201 stops oscillation, then the output voltage of engine-driven electric generator 101 temporarily rises.Then, adjusted the output of engine 102 by automatic tension regulator 106, output voltage is adjusted to setting voltage.The initial stage of t3 of the present Fig. 2 of rise tables of the voltage caused by the stopping of this inverter and the initial stage of the t3 of Fig. 3.
As above, for the power control 1 without smmothing capacitor of present embodiment, inverter 4 vibrate in stability be engine-driven electric generator or source power supply according to external power source and differ widely.Therefore, judge that whether the external power source be connected with the power control 1 of present embodiment is very important for power control 1 as engine-driven electric generator.
The power control 1 of present embodiment in inverter 4 stops by the store voltages that being detected by input voltage measurement portion 8 in the 1st storage part 9, in inverter 4 is vibrated by the store voltages that detected by input voltage measurement portion 8 in the 2nd storage part 10.Control part 11 compares the voltage (the up-to-date voltage after renewal) being stored in the 1st storage part 9 and the voltage that is stored in the 2nd storage part 10.Control part 11, when the voltage ratio being stored in the 2nd storage part 10 is stored in more than voltage (the up-to-date voltage after renewal) the high set-point of the 1st storage part 9, determines that external power source is engine-driven electric generator 101.In addition, set-point is preferably due to the vibration of inverter 4 voltage of the output voltage change of engine-driven electric generator 101, such as, is 10V to 50V.
As above, power control 1 according to the present embodiment, can determine external power source.That is, the control part 11 pairs of inverter 4 stop in input voltage and inverter 4 vibrate in input voltage compare, can determine that external power source is source power supply or engine-driven electric generator 101.
In addition, in the present embodiment, in fig. 2, in order to more clearly represent the variation of voltage, according to every 1 cycle, the waveform of the output voltage of engine-driven electric generator 101 is changed significantly.But the variation of voltage is not limited to 1 cycle, also there is the situation of crossing over one number time.
In addition, as power control 1, owing to not possessing smmothing capacitor between the 1st rectification part 3 and inverter 4, therefore, it is possible to reach the miniaturization of power control 1, lightweight, cost degradation.
In addition, also input voltage measurement portion 8 can be replaced, between the 1st rectification part 3 and inverter 4, arrange voltage detector, the store voltages in also inverter 4 can being stopped is in the 1st storage part 9, and the store voltages in inverter 4 being vibrated is in the 2nd storage part 10.About the determination of control part 11 pairs of external power sources, carry out in the same manner as aforementioned.
(embodiment 2)
In embodiment 2, mark identical numbering for the formation same with embodiment 1 and omit detailed description.About embodiment 2, Fig. 4 is utilized to be described.Fig. 4 is the figure of the formation representing power control 401 in present embodiment and engine-driven electric generator 101.
As shown in Figure 4, the power control 401 of present embodiment, has the 1st average voltage storage part 14 in the 1st storage part 9, has the 2nd average voltage storage part 15 in the 2nd storage part 10.The average voltage (1st average voltage) of 1st average voltage storage part 14 to the voltage being stored in the 1st storage part 9 stores, and the average voltage (2nd average voltage) of the 2nd average voltage storage part 15 to the voltage being stored in the 2nd storage part 10 stores.In addition, average voltage refers to the average of the voltage of certain period, calculates according to each fixed cycle.Such as, the average of the voltage of 16 milliseconds is calculated according to every 10 microseconds.In addition, the 1st average voltage storage part 14 stores the up-to-date voltage in the 1st average voltage.In other words, the 1st average voltage storage part 14 upgrades the 1st average voltage.
1st average voltage is set to the average voltage during the 1st, the 2nd average voltage is set to the average voltage during the 2nd.Now, both can be equal length during the 1st and during the 2nd, also can be different length.In addition, during the 1st and be such as 16 milliseconds ~ 500 milliseconds during the 2nd.In addition, calculating the cycle of the 1st average voltage, also can be the 1st cycle.Equally, the cycle calculating the 2nd average voltage also can be the 2nd cycle.
Then, in the diagram, the control part 11 of power control 401 compares the 1st average voltage (the up-to-date average voltage after renewal) being stored in the 1st average voltage storage part 14 and the 2nd average voltage that is stored in the 2nd average voltage storage part 15.More than the 2nd average voltage is than the 1st average voltage height set-point when (such as, 10V to 50V), control part 11 determines that external power source is engine-driven electric generator 101.
As in the present embodiment, by input voltage equalization being used, for noise prevention misinterpretation, the detection level equalization of input voltage can be made.In addition, about average voltage, also rolling average voltage can be adopted.Rolling average voltage is the average voltage obtained according to the average voltage of multiple unit interval, is updated according to each unit interval.
(embodiment 3)
In embodiment 3, to the formation same with embodiment 1 or embodiment 2, mark identical numbering and omit detailed description.About embodiment 3, Fig. 5 is used to be described.Fig. 5 is the figure of the formation representing power control 501 in present embodiment and engine-driven electric generator 101.
In Figure 5, power control 501 has input voltage monitoring unit 16, output current monitoring unit 17, abnormality determination unit 18 and display 19.
The different point of present embodiment and embodiment 1, embodiment 2 is as follows.Power control 501 has the input voltage monitoring unit 16 being connected with input voltage measurement portion 8, monitoring the input voltage detected by input voltage measurement portion 8.In addition, power control 501 has the output current monitoring unit 17 being connected to and monitoring between control part 11 and output electric current measure portion 12, to the output current detected by output electric current measure portion 12.In addition, power control 501 has the abnormality determination unit 18 be connected with control part 11, input voltage monitoring unit 16 and output current monitoring unit 17.Abnormality determination unit 18, based on the monitoring result of input voltage monitoring unit 16 and output current monitoring unit 17, carries out input voltage whether abnormal judgement and the whether abnormal judgement of output current externally from outside.In addition, power control 501 has and is connected with control part 11, for showing abnormal etc. display 19.
In addition, by display 19, operator can confirm the imposing a condition of power control 501, output state (such as, output current and output voltage etc.) etc.Display 19 is such as liquid crystal panel, 7 sections of LED, display lamps etc.
Abnormality determination unit 18 has for judging the 1st stop condition that exception occurs and the 2nd stop condition.1st stop condition is used when external power source is engine-driven electric generator, and the 2nd stop condition is used when external power source is source power supply.
1st stop condition refers to, such as, " in input voltage monitoring unit 16; detect that the input voltage of more than voltage given within the given time has been transfused to more than given number of times ", and, " in output current monitoring unit 17, detect that the output current of more than given electric current continues the situation of given time more than and there occurs more than given number of times ".When power control 501 is connected with engine-driven electric generator, if meet the 1st stop condition, then power control 501 is judged to be that the input voltage from external power source is abnormal.
As the object lesson of the 1st stop condition, " in input voltage monitoring unit 16; detected the input voltage of more than 5 times more than 210V during 1 second ", and, " in output current monitoring unit 17, detect that the situation that the output current of more than 500A continues more than 10 milliseconds there occurs more than 8 times.In addition, given voltage can be set to 300 ~ 400V, also can be set to and add the voltage after 100V ~ 200V to input voltage.In addition, the given time also can be 10 milliseconds ~ 50 milliseconds.
2nd stop condition refers to, such as, and " in input voltage monitoring unit 16; detect the input voltage of more than given voltage within the given time ", further, " in output current monitoring unit 17, detect that the output current of more than given electric current continues the given time more than ".When power control 501 is connected with source power supply, if meet the 2nd stop condition, then power control 501 is judged to be that the input voltage from external power source is abnormal.
As the concrete example of the 2nd stop condition, be " in input voltage monitoring unit 16, during 300 milliseconds; detect the input voltage of the 1st more than input voltage+60V ", further, " in output current monitoring unit 17, detect that the output current of more than 500A continues the situation of more than 200 milliseconds ".
In addition, the 1st stop condition and the 2nd stop condition are not limited to above-mentioned, also can carry out project add, the deletion of project, the change of threshold value.And the project of the 1st stop condition and the project of the 2nd stop condition do not need certain consistent." project " of present embodiment refers to, " input voltage ", " output current ", " duration ", " frequency ", in addition, also can use " input current ", " output voltage ", " origination interval " etc.In addition, " threshold value " of present embodiment refers at each in " project " by the value determined.
When abnormality determination unit 18 determines the exception of input voltage, in order to protect the 1st rectification part 3, inverter 4, the 2nd rectification part 6 etc. not to affect by excessive voltage, abnormality determination unit 18 sends abnormal signal to control part 11.The control part 11 receiving abnormal signal controls the vibration that drive division 13 stops inverter 4.In addition, the control part 11 receiving abnormal signal sends abnormal show order to display 19, and display 19 shows abnormal generation, and notifies abnormal generation to operator.And then control part 11 also can stop power control 501 overall.
According to the present embodiment; except the effect of embodiment 1, embodiment 2; can judge that the input voltage to power control 501 is whether abnormal, in an exceptional case, also can the semiconductor etc. of inverter 4 of protection structure power control 501.
In addition, in the present embodiment, abnormality determination unit 18 also can possess the 3rd stop condition further.3rd stop condition is " in input voltage monitoring unit 16, the input voltage that the semiconductor etc. that detecting sends as an envoy to forms inverter 4 damages ".This is with the vibration of inverter 4 or stops condition that is irrelevant, that also have nothing to do with the kind of external power source.If meet the 3rd stop condition, then abnormality determination unit 18 is judged to be that the input voltage from external power source is abnormal.About the stopping of abnormal show afterwards, inverter, the stopping of power control, as hereinbefore.
(embodiment 4)
In embodiment 4, identical numbering is marked to the formation same with embodiment 3 and omits detailed description.About embodiment 4, Fig. 6 is utilized to be described.Fig. 6 is the figure of the formation representing welding supply 601 in present embodiment and engine-driven electric generator 101.
As shown in Figure 6, the welding supply 601 of present embodiment has added output voltage test section 20 further in the power control 501 shown in Fig. 5.Output voltage test section 20 is connected with lead-out terminal 7a, lead-out terminal 7b and control part 11, detects the output voltage between lead-out terminal 7a and lead-out terminal 7b, and sends output voltage to control part 11.Be connected with welding torch 23 at the lead-out terminal 7a of welding supply 601, be connected with welding object thing 22 at the lead-out terminal 7b of welding supply 601.In addition, the welding wire 21 of the feeding by not shown feed motor is fed to the welding position of welding object thing 22 by welding torch 23.And lead-out terminal 7a is electrically connected with welding wire 21, lead-out terminal 7b is electrically connected with welding object thing 22.So, to supplying output power (output voltage and output current) between welding wire 21 and welding object thing 22, welding object is welded.
The welding supply 601 of present embodiment carries out feeding to welding wire 21, consumes the consutrode mode that welding wire 21 carries out welding.Being not limited thereto, also can be to being fixed on the non-consumable electrode mode supplying output power between the electrode of welding torch 23 and welding object thing 22.
In the welding undertaken by consutrode mode, between welding wire 21 and welding object thing 22, short-circuit condition and conditions at the arc are welded repeatedly.Control part 11, according to the output current detected by output electric current measure portion 12 and the output voltage detected by output voltage test section 20, judges short-circuit condition or conditions at the arc.Then, if short-circuit condition then carries out the control of inverter 4 based on output current, if conditions at the arc then carry out the control of inverter 4 based on output voltage.
In the welding undertaken by consutrode mode, although short-circuit condition and conditions at the arc repeatedly between welding wire 21 and welding object thing 22, as long as but the interval of welding torch 23 and welding object thing 22 (such as, 10mm to 20mm) fixing, then the output variation of welding supply 601 is stable.But, when welding torch 23 and welding object thing 22 in welding significantly close to, short-circuit condition continues longlyer, and when transitting to next conditions at the arc, the fore-end of welding wire 21 is flown by bullet.Thus, do not produce electric arc, the instantaneous decline of output current of welding supply 601.In the welding supply 601 be connected with engine-driven electric generator 101, if there is the instantaneous decline of output voltage, output voltage then from engine-driven electric generator 101 rises, and can determine that external power source is engine-driven electric generator by control part 11.
In addition, also the 1st stop condition, the 2nd stop condition can be set to the most applicable welding supply 601.In the welding of short-circuit condition and conditions at the arc repeatedly, the output current under short-circuit condition is generally higher than the output current of conditions at the arc.Also the 1st such stop condition of " in output current monitoring unit 17, detecting that the output current of more than given electric current continues the situation of given time more than and there occurs more than given number of times " illustrated in embodiment 3 can be set as the condition monitoring short-circuit condition.
(embodiment 5)
In embodiment 5, to the formation same with embodiment 1 to embodiment 4, mark identical numbering and omit detailed description.About embodiment 5, Fig. 7 is used to be described.Fig. 7 is the figure of the formation representing power control 701 in present embodiment and engine-driven electric generator 101.
In the figure 7, power control 701 has output control part 24.
The point that present embodiment is different from embodiment 1 to embodiment 4 is as follows.Become large with the output from power control, the variation of output also becomes large, the frequent generation of abending of power control.In contrast, when external power source to be defined as engine-driven electric generator 101 by the control part 11 being arranged at power control 701, the output from power control 701 suppresses for the output lower than original specified output by output control part 24.Thereby, it is possible to suppress abending of power control 701, can continue power control 701 is performed an action.Below further illustrate the method for the output suppressing power control 701.
The output control part 24 of power control 701, when external power source is engine-driven electric generator 101, changes the output order being sent to drive division 13 from control part 11.Specifically, the dutycycle of the Driven by inverter of inverter 4 is made to decline.Thus, the alternating electromotive force from inverter 4 declines, and the output of power control 701 declines.With the decline of the output of power control 701, the amplitude exporting variation also diminishes, and makes the reduction that abends of power control 701.
Below, an example of the action of output control part 24 is represented.The electric power of the DC current inputted from the 1st rectification part 3 to inverter 4 with 500A is described, and control part 11 have sent the situation of the output order dutycycle of inverter 4 being set to 80% to drive division 13.When there is no output control part 24 in power control, export the electric power of the alternating current with 400A from inverter 4.Now, the output control part 24 of the power control 701 of present embodiment, by the output order making dutycycle become 80%, changes to the output order making dutycycle become 60%.Thus, export the electric power of the alternating current with 300A from inverter 4, the output power from lead-out terminal 7a, 7b of power control 701 also declines.
In addition, in the present embodiment, output control part 24 is set to the formation different from control part 11, but control part 11 also can be made to possess the function of output control part 24.In addition, in the present embodiment, output control part 24 is arranged between control part 11 and drive division 13, but also can be arranged between drive division 13 and inverter 4, can also be arranged in fact between control part 11 and inverter 4.
In addition, in embodiment 1 to embodiment 5, describe the example that engine-driven electric generator 101 possesses the situation of automatic tension regulator 106.But, when engine-driven electric generator 101 does not possess automatic tension regulator 106, also play effect of the present disclosure.
In addition, abnormality determination unit 18, except the 1st stop condition, the 2nd stop condition, also can possess the 1st warning condition, the 2nd warning condition.1st warning condition refers to, in inverter 4 stops, and the condition given a warning before meeting the 1st stop condition.Specifically, be the project identical with the 1st stop condition, and make the threshold value of projects be less than the 1st stop condition.Such as, be " in input voltage monitoring unit 16, during 1 second; the input voltage of more than 205V is detected more than 3 times ", further, " in output current monitoring unit 17, detect that the situation that the output current of more than 450A continues more than 7 milliseconds there occurs more than 5 times ".1st warning condition, without the need to necessarily reducing the threshold value of all items of the 1st stop condition, also can reduce project.Threshold value diminishes, project minimizing just easily satisfies condition.That is, the 1st warning condition is the condition that meets easier than the 1st stop condition.2nd warning condition refers to, in inverter 4 is vibrated, the condition given a warning before meeting the 2nd stop condition is the condition that meets easier than the 2nd stop condition.
When meeting such the 1st warning condition, the 2nd warning condition, abnormality determination unit 18 pairs of control parts 11 send caution signal.Thus, control part 11 can make display 19 show warning, impels and warns to operator.
Industrial applicibility
As above, power control of the present disclosure, determines whether external power source is engine-driven electric generator.And then when determining that external power source is engine-driven electric generator, power control of the present disclosure monitors output current and input voltage, be judged to be that when having exceeded given condition the input voltage of power control is abnormal.So power control of the present disclosure makes inverter stop, therefore, it is possible to prevent the damage of inverter, industrially useful.
Symbol description
1,401,501,701 power controls
2 input terminals
3 the 1st rectification part
4 inverter
5 main transformers
6 the 2nd rectification part
7a, 7b lead-out terminal
8 input voltage measurement portions
9 the 1st storage parts
10 the 2nd storage parts
11 control parts
12 output electric current measure portions
13 drive divisions
14 the 1st average voltage storage parts
15 the 2nd average voltage storage parts
16 input voltage monitoring units
17 output current monitoring units
18 abnormality determination unit
19 displays
20 output voltage test sections
21 welding wires
22 welding object things
23 welding torches
24 output control parts
101 engine-driven electric generators
102 engines
103 generators
104 armature winding
105 voltage setting devices
106 automatic tension regulators
107 lead-out terminals
201 supply units
202 input terminals
203 input side rectification part
204 smmothing capacitors
205 inverter
206 transformers
207 outlet side rectification part
208a, 208b lead-out terminal
209 inverter control portions
210 power voltage detecters
211 current detectors
212,216 voltage comparators
213 greatest lower bound reference generators
214 maximum upper limit reference generators
215 inverter stop control units
217 specified lower limit reference generators
218 rated limit reference generators
219 alarm display parts
220 external power sources
601 welding supplys
Claims (10)
1. a power control, possesses:
Input terminal, its input is from the input voltage of power supply;
Inverter, it is connected with described input terminal, carries out inverter control to described input voltage;
Lead-out terminal, it is connected with described inverter via transformer, exports the output current from described transformer;
Input voltage measurement portion, it is connected between described input terminal and described inverter, detects described input voltage;
1st storage part, it is connected with described input voltage measurement portion, stores the 1st input voltage that input voltage measurement portion described in described inverter stopping is detected;
2nd storage part, it is connected with described input voltage measurement portion, stores the 2nd input voltage that input voltage measurement portion described in described inverter vibration is detected; With
Control part, it is connected with described 1st storage part and described 2nd storage part, compares described 1st input voltage and described 2nd input voltage, determines whether described power supply is generator,
When the difference of described 1st input voltage and described 2nd input voltage is greater than given voltage, described power supply is defined as generator by described control part.
2. power control according to claim 1, wherein,
Described 1st input voltage is the average voltage during the 1st of described input voltage,
Described 2nd input voltage is the average voltage during the 2nd of described input voltage.
3. power control according to claim 1 and 2, wherein,
Also possess:
Input voltage monitoring unit, it is connected with described input voltage measurement portion;
Output electric current measure portion, it is connected between described transformer and described lead-out terminal, detects described output current;
Output current monitoring unit, it is connected with described output electric current measure portion; With
Abnormality determination unit, it is connected with described input voltage monitoring unit and described output current monitoring unit, based on described input voltage and described output current, judges the exception of described input voltage,
Described abnormality determination unit, when described power supply is generator, if meet the 1st stop condition, is judged to be that described input voltage is abnormal,
Described abnormality determination unit, when described power supply is source power supply, if meet the 2nd stop condition, is judged to be that described input voltage is abnormal,
Described abnormality determination unit exports the stop signal stopping described inverter to described control part.
4. power control according to claim 3, wherein,
Described 1st stop condition is:
Input voltage more than 1st threshold voltage is transfused to more than the 1st number during the 1st time, and,
There is more than the 2nd number in the number of times that output current more than 1st threshold current continue for the 2nd time more than.
5. power control according to claim 4, wherein,
Described 1st threshold voltage is 300V ~ 400V,
Described 1st time is 1 second,
Described 1st number is 5 times,
Described 1st threshold current is 500A,
Described 2nd time is 10 ~ 50 milliseconds,
Described 2nd number is 8 times.
6. the power control according to any one of claim 3 ~ 5, wherein,
Described 2nd stop condition is:
The input voltage of the 3rd time average more than the 2nd threshold voltage, and,
Output current more than 1st threshold current continues the 4th time more than.
7. power control according to claim 6, wherein,
Described 3rd time is 300 milliseconds,
Described 2nd threshold voltage is the voltage on average adding 60V to described input voltage,
Described 4th time is 200 milliseconds.
8. the power control according to any one of claim 3 ~ 7, wherein,
Described lead-out terminal has the 1st lead-out terminal and the 2nd lead-out terminal,
Described 1st lead-out terminal and Electrode connection, described 2nd lead-out terminal is connected with welding object thing,
Between described electrode with described welding object thing, short-circuit condition and conditions at the arc are welded repeatedly,
Described output current is the short circuit current of described short-circuit condition.
9. the power control according to any one of claim 1 ~ 8, wherein,
Also possess the output control part be arranged between described inverter and described control part,
Described output control part changes from described control part to the output order of described inverter.
10. the power control according to any one of claim 1 ~ 9, wherein,
Also possess the 1st rectification part be connected between described input terminal and described inverter,
Electrolytic capacitor is there is not between described 1st rectification part and described inverter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-218089 | 2013-10-21 | ||
| JP2013218089 | 2013-10-21 | ||
| PCT/JP2014/005251 WO2015059906A1 (en) | 2013-10-21 | 2014-10-16 | Power supply control apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN105451922A true CN105451922A (en) | 2016-03-30 |
| CN105451922B CN105451922B (en) | 2017-11-17 |
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| CN201480043999.6A Active CN105451922B (en) | 2013-10-21 | 2014-10-16 | Power control |
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| JP (1) | JP6387530B2 (en) |
| CN (1) | CN105451922B (en) |
| WO (1) | WO2015059906A1 (en) |
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| CN110579720A (en) * | 2018-06-08 | 2019-12-17 | 台达电子工业股份有限公司 | Power supply monitor |
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| WO2022176948A1 (en) * | 2021-02-19 | 2022-08-25 | パナソニックＩｐマネジメント株式会社 | Laser oscillator and direct diode laser processing apparatus provided with same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105451922B (en) | 2017-11-17 |
| JPWO2015059906A1 (en) | 2017-03-09 |
| JP6387530B2 (en) | 2018-09-12 |
| WO2015059906A1 (en) | 2015-04-30 |
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