CN104521128B - Power inverter - Google Patents
Power inverter Download PDFInfo
- Publication number
- CN104521128B CN104521128B CN201380041987.5A CN201380041987A CN104521128B CN 104521128 B CN104521128 B CN 104521128B CN 201380041987 A CN201380041987 A CN 201380041987A CN 104521128 B CN104521128 B CN 104521128B
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- Prior art keywords
- signal
- operating
- operation instruction
- reproducing unit
- unit
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The power inverter of the present invention includes：Direct current component；The direct current power that the direct current component is accumulated is converted into the converter section of the three-phase ac power of expected frequency；The alternating electromotive force that the converter section is converted to is regenerated to the reproducing unit of power supply；The operation instruction selector of the signal of processing output is judged with signal that can be outside selection device or operating from inside the device, operating inside described device judges that processing is selected and is performed independently of the operation instruction, and the operating judges that the processing output signal of processing is output to outside.
Description
Technical field
The present invention relates to power inverter.
Background technology
As the background technology of the art, there are Japanese Unexamined Patent Publication 2007-244009 publications (patent document 1).At this
Recorded in publication：" current control instruction is output to unit 2A from speed controlling portion 1 and is sent to unit 2B by main control unit,
The synchronizing datum signal of PWM carrier waves is sent to slave unit 2B.Slave unit by PLL oscillating circuits 20 to receiving
Synchronizing datum signal and the synchronizing datum signal of this unit phase be compared to it is same with the PWM carrier phases of main control unit
Step, and make in phase-correction circuitry 21 PWM carrier signals phase shift to an earlier date synchronizing datum signal propagation delay time amount.
In slave unit, cause to stagger switch with the PWM carrier signals of other units by the wiring between inverter and machine winding
180 ° of amount of voltage fluctuation frequency." (with reference to summary).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2007-244009 publications
The content of the invention
The invention problem to be solved
Above-mentioned patent document 1 provides the parallel method of operation without superior device in main control unit structure.For master control
Signal between unit is synchronous, and the propagation delay time is corrected using PLL oscillating circuits, needs to repair in subordinate side in this case
The processing of positive transmission time delay, circuit becomes complicated.In addition, needing to be grasped the propagation delay time to correct.Moreover, by
The signal from main control device is depended in the operating of slave, so during main control device failure, even if slave unit is normal
Whole system can also stop.Further, since main control device is variant with slave, it is therefore desirable to respectively make guest machine and more
The consideration changed in the system maintenances such as method.
Technical scheme for solving problem
In order to solve the above problems, for example with the structure recorded in the range of claims.
The power inverter of the present invention includes：Direct current component；The direct current power that the direct current component is accumulated is converted into
The converter section of the three-phase ac power of expected frequency；The alternating electromotive force that the converter section is converted to is regenerated to the regeneration of power supply
Portion；The operation instruction selection of the signal of processing output is judged with signal that can be outside selection device or operating from inside the device
Operating inside portion, described device judges that processing is selected and is performed independently of the operation instruction, and the operating judges processing
Processing output signal is output to outside.
Invention effect
By means of the invention it is possible to obtain the hardware for all units for making composition operate parallel and the effect of processing action all equivalences
Really.
Brief description of the drawings
Fig. 1 represents 120 degree of energization type regeneration converters and the configuration example of motor control inverter in embodiment 1,2.
Fig. 2 represents the configuration example of the parallel operating in embodiment 1.
Fig. 3 represents the example of the relation of AC power waveform in embodiment 1, power phase and gate pulse.
Fig. 4 represents the example of the details of the internal operations judgement processing in embodiment 1.
Fig. 5 represents the configuration example that control signal is connected up for being used to operate parallel in embodiment 1.
Fig. 6 represents the configuration example that control signal is connected up for being used to operate parallel in embodiment 1.
Embodiment
Hereinafter, using illustrating embodiment.
Embodiment 1
Illustrate the example of 120 degree of energization type regeneration converters in the present embodiment.
Fig. 1 is the unit of induction conductivity and 120 degree of energization type regeneration converters 100 (hereinafter referred to as regeneration converter)
The configuration example of operating.
In addition, Fig. 2 is the configuration example of the parallel operating of the regeneration converter.
Illustrate the control method of the regeneration converter first with Fig. 1.The regeneration converter 100 via reactor 102 with
Three-phase alternating-current supply 1 is connected.In addition, main circuit direct current portion 105 and the direct current portion of the motor control inverter 3 of controlled motor 2
Connection.According to the state of load, the electric power regenerated by motor is input to from motor control inverter through counterflow-preventing diode 107
The direct current splenium 105 of regeneration converter.
By will be input to located at the phase-detection of main circuit 101 with the signal of transformer 103 in control circuit portion 110
The phase of power supply is obtained in PLL (phase locking circuit) processing unit 111.In addition, the input of the PLL processing units can not be phase
Detection transformer, can be the obtained information of voltage of such as electric resistance partial pressure or the pulse type phase signal generated by AC wave shape.
Gate pulse waveform generation 112 parts of processing are produced for driving main electricity using the power phase of above-mentioned acquisition as input
6 gate pulses of circuit component 104.Fig. 3 represents the example of the relation of the phase and gate pulse.T represents the cycle of power supply herein.
This, as alternating voltage, by 200V of voltage between lines virtual value, phase sequence be that along mutually illustrating, but voltage and phase sequence can be any.
In addition, the peak value of R phases is set to 0 degree by power phase, but arbitrary phase can be set to 0 degree.In addition, what is represented in this figure is
The continuous impulse of 120 degree of energization types, but can also change above-mentioned shape for purposes such as current controls.
It is when giving shielding ring off signal 119 to drive main circuit component by above-mentioned door pulse signal in practice.
This condition is met in the case where that can operate and there is operation instruction.In the present embodiment, using AND circuit (with circuit) 113
By input can operating condition and operation instruction to obtain the signal of this condition be used as output, wherein it is above-mentioned can operating condition be table
Show the executable signal of present treatment.
Can operating condition be consider unit inside state and judgement can operate and draw.In the present embodiment, may be used
Operating judges that the output of processing unit 118 can operating condition.Herein, it is necessary to the frequency that the state inside the unit considered is such as PLL
Synchronous regime, the bias treatment state of various detectors, various initialization process states and various abnormal situations occurred etc..
On the other hand, operation instruction is different from unit internal state, met when needing to operate or expecting operating
Signal.In the present embodiment, the operation instruction can be selected at the internal operations judgement for unit by operation instruction selector 114
The output in reason portion 117 or the signal outside unit.
Selected as operation instruction, in the case where selecting outside, outside operating is read by terminal input processing portion 115
The information of command input terminals.Here, terminal input processing portion include on the wave filter in the circuit of input, insulator chain and
Port processing of software etc..
In addition, internal operations judge processing unit to be judged by the processing in this unit the situation needed for operating
Part.In the present embodiment, judge to operate and stop by DC voltage as shown in Figure 4.Specifically, setting has delayed
(hysteresis) operation start and the threshold value of stopping voltage, judge to operate and stop by the relation of DC voltage and the threshold value
Only.As a result, in the case where producing the regenerated electric power from motor, because the voltage in main circuit direct current portion rises, therefore to
Operating transfer.And, it is contemplated that the determination methods different from the present embodiment.For example, being input to main circuit direct current that can measure
In the case of the electric power in portion, have in the case where input electric power exceedes threshold value for operation start, in input electric power less than threshold value
In the case of for stop method.
The internal operations judge that processing unit can perform processing independently of operation instruction selector, and present treatment is defeated
Go out signal to be output to outside unit.The signal is transferred to internal operations by terminal output processing part 116 and judges lead-out terminal
121.Here, terminal output processing part includes handling on the port of the wave filter in the circuit of output, insulator chain and software
Deng.
These process part one part or all be able to can also be led to by circuit realiration that control circuit 110 includes
Cross microcomputer and program is realized.
Illustrate the method for unit operating below.The connection example operated as unit is as shown in Figure 1.The feelings operated in unit
Under condition, selected as operation instruction, the judgement processing of selection internal operations.It can now be carried out independent of from outside signal
Unit is operated.
Then the situation that multiple-unit is operated parallel is illustrated.It is as shown in Figure 2 as connection example.Here, a motor control
Multiple regeneration converters are connected with the direct current portion of inverter.The details of the regeneration converter is in addition to operation instruction is selected
It is identical with Fig. 1 regeneration converter, omit in detail in this figure.
When multiple-unit is operated parallel, operating is not being synchronized and is being judged the internal operations of each unit the output of processing
In the situation (making operation instruction selection be internal situation) selected as operation instruction, that is, all units are caused to carry out Fig. 4
When shown internal operations judge processing, the operating existed between unit between the error of DC voltage detection, generation unit judges
Time difference.Therefore, the problem of same when each unit independently judges to produce with signal delay during operating/stopping, expecting to carry out
The synchronization of operating/stopping.
Therefore, selected in the present embodiment by selecting outside to be used as operation instruction, same signal is inputted, to realize this mesh
's.In Fig. 2 example, arbitrarily select the internal operations of nethermost regeneration converter to judge output, the terminal is exported
It is input to the outside operation instruction input terminal of all units signal parallel.By so connecting, by the inside of a unit
Judge the outside operation instruction input terminal for being input to all units of processing.Especially, for transmission channel, including quilt
It is all identical including the unit of selection.
As shown in Fig. 2 being needed during parallel operating with carrying out signal transmitting and receiving outside unit.And the electrical power conversion of industrial volume production
Device is often equipped with the universal input output circuit that can be customized by software set etc. for a variety of applications of correspondence.If should
Universal input output is that can be used as former state or by slight change, then can be using the electricity for having actual effect and reliability
Road, and development cost and manufacturing cost can be reduced by the generalization of circuit and part.
Fig. 5 is to utilize above-mentioned universal input output circuit practically to constitute the control letter for the parallel operating shown in Fig. 2
Number wiring example.Illustrate the example of the wiring of each regeneration converter in Fig. 2.
Here, OTP and OTN is the terminal that output is judged for exporting internal operations.INP and INN is for inputting outside
The terminal of operation instruction input.These terminals are insulated by photoelectrical coupler.On the principle of the front and back end of photoelectrical coupler,
Circuit can reversally be constituted.
In addition, the electric power converter of the industrial volume production often outfit DC voltage in the same manner as universal input output circuit
Source.The example of the direct voltage source with 24V is represented in Fig. 5.P24 and CM1 are respectively the positive pole and earth terminal of the 24V power supplys.
In Fig. 5, it will judge that output is inputted to all positioned at the internal operations of the optional regeneration converter of bottom
The outside operation instruction of unit.At this time, it may be necessary to which the power supply for driving photo-coupler, utilizes the internal operations of the regeneration converter
Judge output.Judge output to drive the photoelectrical coupler between OTP-OTN by the internal operations of selected regeneration converter.
Thus the photoelectrical coupler between the INP-INN of all units is driven, outside operation instruction input is realized.Including what is be arbitrarily selected
All in synchronization including unit.
Generally, due to universal input output circuit in order to improve noise immunity and insulation and in its interleaving with external circuit
Enter photoelectrical coupler etc..The delay of the photoelectrical coupler is, for example, 100 microseconds.Therefore, because in terminal output during parallel operating
Judge processing unit to transmission channel respectively through photoelectrical coupler, therefore from internal operations at processing unit and terminal input processing portion
Delay be, for example, 200 microseconds.
In regeneration converter operating, in the case of above-mentioned signal delay occurs between unit, there is what is first started running
The situation for the regenerated electric power that the unit that the regenerated electric power that unit is produced starts running after exceeding is produced.The result is that being produced between unit
Raw current imbalance.The current imbalance has quite dependent on the DC voltage in circuit, alternating voltage, the inductance of reactor
In the possibility of rated current.As the result is that the steady running to system throws into question.Or in order to reduce generation
Inductance that is uneven and for example needing adjustment reactor.
In the present embodiment, as shown in Fig. 2 because the transmission channel of all units is all equal, therefore in path
In the case of with the slow photoelectrical coupler of above-mentioned transmission speed, the signal delay between unit can also be suppressed in irreducible minimum
Degree.
Embodiment 2
The configuration example for the parallel operating that remaining unit can also be operated is entered when being broken down in embodiment 2 to any one unit
Row explanation.
Fig. 6 is the example of the control signal wiring of the present embodiment.Compared with Fig. 5 of embodiment 1 wiring example, it make use of
The internal operations of all units judge output, are concurrently input outside operation instruction input.In addition, in Fig. 5 of embodiment 1
24V power supplys depend on the internal electric source of discrete cell, and then set stable voltage-stabilized power supply 130 outside at this.Implement with upper
Similarly, direct current 24V voltage-stabilized power supply not necessarily needs to be direct current 24V to example.In addition, the voltage-stabilized power supply is using three-phase alternating current as electricity
Source, but input voltage and the input number of phases can be any.
Now, outside operation instruction input judges that output is judged as the situation of operating for the internal operations of any cell.I.e.
Make for some reason to hinder etc. in any cell and in the case of can not using, so long as not the influence common circuit such as OTP and OTN short circuits part
Fault mode, then remaining unit can continue to carry out identical processing.
As described above, the invention according to embodiment 1 and embodiment 2, master control/subordinate this function can be eliminated poor
It is different, make the hardware for all units that composition operates parallel and processing action all of equal value.For expecting synchronous signal, from signal source
Transmission channel to actual signal processing is equal, even in the cheap transmission circuit for not considering transmission speed especially
In also shorten signal delay between each unit.Further, it can be easy to structure normal when any Component units break down
The system that unit can also be operated.Further, since all units that composition is operated parallel are all identical, therefore for system maintenance and dimension
Pillar reason is also very convenient.Further, due to that can simply set up unit operating and multiple-unit operating, therefore system expands change
Obtain easily.
In addition, the present invention is not limited to the above embodiments, but contain various modifications example.For example, above-mentioned implementation
Example is that in order to the present invention detailed description that illustrates and carry out with being easily understood, and non-limiting must possess illustrated whole
Structure.In addition, a part for the structure of certain embodiment can be substituted for the structure of other embodiments, or can be in certain embodiment
Add the structure of other embodiments.In addition, a part for the structure for each embodiment, can carry out other structures addition,
Delete, replace.
In addition, above-mentioned each structure, function, processing unit, processing unit etc., its it is some or all of can be by using
Integrated circuit is realized to design etc. with hardware.Or, reality also can be explained and performed to above-mentioned each structure, function by processor
Now the program of each function is implemented in software.The information such as program, form, the file of each function are realized, memory are storable in, hard
In the tape decks such as disk, SSD (Solid State Drive, solid state hard disc), or in the recording medium such as IC-card, SD card, DVD.
In addition, for control line and information link, illustrating the part needed for explanation, not necessarily meaning that out product
In all control line and information link.It can essentially think that most structure is interconnected.
Indicia explanation
1 ... three-phase alternating-current supply
2 ... induction conductivities
3 ... motor control inverters
100 ... 120 degree of energization type regeneration converters
101 ... main circuit portions
102 ... AC reactors
103 ... phase-detection transformers
104 ... main circuit components
105 ... main circuit direct current portions
106 ... voltage detection departments
107 ... counterflow-preventing diodes
110 ... control circuit portions
111 ... PLL circuits
112 ... gate pulse generative circuits
113 ... AND circuits
114 ... operation instruction selectors
115 ... terminal input processing portions
116 ... terminal output processing parts
117 ... internal operations judge processing unit
118 ... can operate judgement processing unit
119 ... doors shield ring off signal
120 ... outside operation instruction input terminals
121 ... internal operations demand output terminals
130 ... voltage-stabilized power supplies.
Claims (3)
1. a kind of power inverter, it is characterised in that including：
Direct current component；
The direct current power that the direct current component is accumulated is converted into the converter section of the three-phase ac power of expected frequency；With
It is connected in parallel with the direct current component, the alternating electromotive force that the converter section is converted to is regenerated to multiple regeneration of power supply
Portion,
Each reproducing unit in the multiple reproducing unit include can be outside selection device signal or operating from inside the device
Judge the operation instruction selector of the signal of processing output,
When the multiple reproducing unit is operated, the multiple respective operation instruction selector selection described device of reproducing unit
Outside signal is selected as operation instruction,
The signal that a reproducing unit being arbitrarily selected judges to the operating inside outside output described device,
It is arbitrarily selected by the way that the signal parallel of the operating judgement inside the described device exported is inputted to including described
A reproducing unit the multiple reproducing unit outside operation instruction input terminal, the multiple reproducing unit can be operated.
2. power inverter as claimed in claim 1, it is characterised in that：
By selecting to judge that the signal of processing output is selected as operation instruction and can be carried out from the operating inside described device
Unit is operated.
3. power inverter as claimed in claim 1, it is characterised in that：
The terminal of the signal of processing is judged for the operating inside input and output described device, is insulated by photoelectrical coupler.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-219029 | 2012-10-01 | ||
| JP2012219029A JP5930934B2 (en) | 2012-10-01 | 2012-10-01 | Power converter |
| PCT/JP2013/070684 WO2014054332A1 (en) | 2012-10-01 | 2013-07-31 | Power conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104521128A CN104521128A (en) | 2015-04-15 |
| CN104521128B true CN104521128B (en) | 2017-09-26 |
Family
ID=50434667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380041987.5A Active CN104521128B (en) | 2012-10-01 | 2013-07-31 | Power inverter |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5930934B2 (en) |
| CN (1) | CN104521128B (en) |
| WO (1) | WO2014054332A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141140B (en) | 2015-09-30 | 2020-10-30 | 东芝三菱电机产业系统株式会社 | Uninterruptible power supply device |
| CN111034002B (en) * | 2017-08-04 | 2023-11-24 | 松下知识产权经营株式会社 | Power converter and power conversion system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689816A (en) * | 2007-04-27 | 2010-03-31 | 力博特公司 | Method for pulse width modulation synchronization in a parallel ups system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63245202A (en) * | 1987-03-31 | 1988-10-12 | Toshiba Corp | Parallel operation controller for inverter for car body |
| JP2693635B2 (en) * | 1990-10-11 | 1997-12-24 | ファナック株式会社 | CNC synchronous operation method |
| JP2544522B2 (en) * | 1990-12-28 | 1996-10-16 | 三菱電機株式会社 | Power regeneration device |
| JP3605720B2 (en) * | 2000-08-11 | 2004-12-22 | 住友重機械工業株式会社 | Motor control device for injection molding machine |
| JP4251776B2 (en) * | 2001-02-13 | 2009-04-08 | 株式会社日立産機システム | Inverter device |
-
2012
- 2012-10-01 JP JP2012219029A patent/JP5930934B2/en active Active
-
2013
- 2013-07-31 WO PCT/JP2013/070684 patent/WO2014054332A1/en active Application Filing
- 2013-07-31 CN CN201380041987.5A patent/CN104521128B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689816A (en) * | 2007-04-27 | 2010-03-31 | 力博特公司 | Method for pulse width modulation synchronization in a parallel ups system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014054332A1 (en) | 2014-04-10 |
| CN104521128A (en) | 2015-04-15 |
| JP2014073033A (en) | 2014-04-21 |
| JP5930934B2 (en) | 2016-06-08 |
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