CN104333058A - Backup uninterruptable inverter - Google Patents
Backup uninterruptable inverter Download PDFInfo
- Publication number
- CN104333058A CN104333058A CN201410555198.XA CN201410555198A CN104333058A CN 104333058 A CN104333058 A CN 104333058A CN 201410555198 A CN201410555198 A CN 201410555198A CN 104333058 A CN104333058 A CN 104333058A
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- circuit
- inverter circuit
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- output
- inverter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The invention discloses a backup uninterruptable inverter, which comprises a control circuit, a transformer and three inverter circuits, wherein each inverter circuit is a single-phase bridge inverter circuit and comprises four switch transistors and four fly-wheel diodes; the input end of the first inverter circuit is connected with a battery input end and the output end is connected with a primary coil of the transformer; the input end of the second inverter circuit is connected with a secondary coil of the transformer, and the output end is connected with the input end of the third inverter circuit; the output end of the third inverter circuit is connected with an AC output end and an AC input end is connected with the AC output end via an output switching circuit; the sampling end of the control circuit comprises a battery sampling input end, a second inverter circuit output sampling input end, a third inverter circuit output sampling input end and an AC input sampling input end; and driving ends of the switch transistors of the three inverter circuits and the driving end of the output switching circuit are respectively connected with the corresponding driving signal output end of the control circuit. The circuit structure of the invention is simple, a control circuit is used for coordination, and system operation is stable.
Description
[technical field]
The present invention relates to back-up source, particularly relate to the uninterrupted inverter of a kind of backup type.
[background technology]
The uninterrupted inverter of backup type, is mainly used in computer room.Railway system's signal system, control system, telecommunication device, central dispatching system and business internet system.Water conservancy, power center dispatching patcher, computer center and large-scale control system, most widely used is bank.When grid power blackout time, load by the uninterrupted inverter power supply of backup type to guarantee to work on.
As shown in Figure 1, the uninterrupted inverter of traditional backup type is made up of the control circuit of battery charger, inverter circuit, output switching circuit.
Charging a battery of battery charger, comprises interchange input rectification circuit, power conversion circuit, the control circuit of direct current output rectification circuit, and control circuit comprises sampling comparison circuit, reference voltage generating circuit, isolation feedback circuit, pwm control circuit.
Inverter circuit powers to the load when mains failure time, comprises DC/DC booster circuit, power conversion circuit and control circuit, and control circuit comprises sampling comparison circuit, reference voltage generating circuit, isolation feedback circuit, pwm control circuit; Isolated drive circuit, exports sample circuit and sine wave drive signal produces circuit (the generation S.PWM module be made up of SG3525).
The uninterrupted inverter of this backup type is made up of two parts circuit, complex structure, and power component compares dispersion, takes up room larger, and the control mode of whole system belongs to analogue enlargement, and response speed is lower.
[summary of the invention]
The technical problem to be solved in the present invention is to provide the uninterrupted inverter of the simple backup type of a kind of structure.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, the uninterrupted inverter of a kind of backup type, comprise battery incoming end, ac input end, ac output end, output switching circuit, control circuit, transformer and three inverter circuits, described inverter circuit is single-phase bridge inverter circuit, comprise 4 switching tubes and respectively with 4 fly-wheel diodes of 4 paralleled power switches; The input termination cell input terminal of the first inverter circuit, exports termination transformer; The input termination transformer secondary coil of the second inverter circuit, exports the input of termination the 3rd inverter circuit; The output termination ac output end of the 3rd inverter circuit, ac input end connects ac output end by output switching circuit; The sampling end of control circuit comprises battery sampling input, the second inverter circuit exports sampling input, the 3rd inverter circuit exports sampling input and exchanges input sample input; The drive end of three inverter circuit switching tubes and the drive end of the output switching circuit drive singal output that connection control circuit is corresponding respectively.
The uninterrupted inverter of above-described backup type, control circuit comprises microprocessor and sampling isolation circuit, and the input of sampling isolation circuit comprises battery sampling input, the second inverter circuit exports sampling input, the 3rd inverter circuit exports sampling input and exchanges input sample input; The sampled signal input that sampling isolation circuit a plurality of output termination microprocessor is corresponding; Microprocessor comprises the drive singal output of the first inverter circuit switching tube, the drive singal output of the second inverter circuit switching tube, the drive singal output of the 3rd inverter circuit switching tube and the drive singal output of commutation circuit.
The uninterrupted inverter of above-described backup type, described microprocessor is dsp processor, and the drive singal of inverter circuit switching tube is the signal group of two anti-phase pwm signals.
The uninterrupted inverter of above-described backup type, battery sampling comprises battery voltage sampling and battery current sampling, second inverter circuit exports sampling and comprises the second sampling of inverter circuit output voltage and current sample, 3rd inverter circuit exports sampling and comprises the 3rd sampling of inverter circuit output voltage and current sample, exchanges input sample and comprises AC-input voltage sampling and phase sample.
The uninterrupted inverter of above-described backup type, output switching circuit comprises relay and relay drive circuit, and the live wire of ac input end and zero line connect live wire and the zero line of ac output end respectively by two contacts of relay; The driving signal input of relay drive circuit connects the commutation circuit drive singal output of microprocessor.
The uninterrupted inverter of above-described backup type, comprise the first filter capacitor, the second filter capacitor, filter capacitor and LC filter circuit, the first filter capacitor is connected on the input of the first inverter circuit; Second filter capacitor is connected on the output of the second inverter circuit; 3rd filter capacitor is connected on the input of the 3rd inverter circuit, and LC filter circuit is connected on the output of the 3rd inverter circuit.
The uninterrupted inverter of above-described backup type, described transformer is step-up transformer.
The uninterrupted inverter of above-described backup type, control circuit detect that battery incoming end has electricity and the input of ac input end is abnormal time, control circuit exports one group of anti-phase PWM drive singal to the switching tube of the first inverter circuit, first inverter circuit changes the direct current that battery exports into alternating current, through transformer coupled to secondary coil; The switching tube of the second inverter circuit is without drive singal, and 4 diodes form full bridge rectifier, and to the AC rectification that transformer secondary coil exports, the second inverter circuit exports direct current; After control circuit detects that the second inverter circuit has direct current to export, to the switching tube sine wave output drive singal of the 3rd inverter circuit, the direct current of input is converted to sinusoidal ac and exports through ac input end by the 3rd inverter circuit.
The uninterrupted inverter of above-described backup type, control circuit detects that ac input end has when normally inputting, first the drive singal of three inverter circuit switching tubes is closed, then to the drive end output drive signal of output switching circuit, output switching circuit connects ac input end and ac output end, and the alternating current of ac input end input exports through ac output end.
The uninterrupted inverter of above-described backup type, control circuit exports one group of anti-phase PWM drive singal to the switching tube of the second inverter circuit, and the switching tube of the second inverter circuit is in the operating state of pause switch; The alternating current of ac input end input is connected to the output of the 3rd inverter circuit through output switching circuit, the switching tube of the 3rd inverter circuit is without drive singal, 4 diodes form full bridge rectifier, to the AC rectification of the reverse input of output of the 3rd inverter circuit, by the input of the 3rd inverter circuit to the input Inverted Output direct current of the second inverter circuit; Second inverter circuit changes the direct current that the 3rd inverter circuit exports into alternating current, through transformer coupled to primary coil; The switching tube of the first inverter circuit is without drive singal, and 4 diodes form full bridge rectifier, and to the AC rectification of transformer Inverted Output, the first inverter circuit Inverted Output direct current charges to battery.
The uninterrupted inverter circuit structure of backup type of the present invention is simple, and can do bi-directional power and use, whole circuit is coordinated by unified control circuit, and system works is stablized.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the schematic diagram of the uninterrupted inverter of prior art backup type.
Fig. 2 is the schematic diagram of the uninterrupted inverter of embodiment of the present invention backup type.
[embodiment]
The structure of the uninterrupted inverter of embodiment of the present invention backup type as shown in Figure 2, comprises battery incoming end BAT, ac input end, ac output end, output switching circuit, control circuit, step-up transformer T and three inverter circuit.
Three inverter circuits are all single-phase bridge inverter circuits, and single-phase bridge inverter circuit comprises 4 metal-oxide-semiconductors and 4 fly-wheel diodes in parallel with 4 metal-oxide-semiconductors respectively.
First inverter circuit comprises metal-oxide-semiconductor Q1-Q4, sustained diode 1-D4; Second inverter circuit comprises metal-oxide-semiconductor Q5-Q8, sustained diode 5-D8; First inverter circuit comprises metal-oxide-semiconductor Q9-Q12, sustained diode 9-D13.
First inverter circuit, the first inverter circuit and transformer T form DC/DC step-up/step-down circuit.(boosting or step-down are determined by transformer T, and in the present embodiment, the number of turn of the secondary winding of transformer T is more than the number of turn of armature winding, and DC/DC step-up/step-down circuit is operated in DC/DC pressure-increasning state)
The input termination cell input terminal of the first inverter circuit, export termination transformer T primary coil, the input termination transformer T secondary coil of the second inverter circuit, exports the input of termination the 3rd inverter circuit.The output termination ac output end of the 3rd inverter circuit, ac input end connects ac output end by output switching circuit.
Control circuit comprises dsp processor (TMS 32 0F 2812) and sampling isolation circuit, and the input of sampling isolation circuit comprises battery sampling input, the second inverter circuit exports sampling input, the 3rd inverter circuit exports sampling input and exchanges input sample input.Each of sampling isolation circuit exports sampled signal input corresponding to termination dsp processor.
Wherein, battery sampling comprises battery voltage sampling and battery current sampling, second inverter circuit exports sampling and comprises the second sampling of inverter circuit output voltage and current sample, 3rd inverter circuit exports sampling and comprises the 3rd sampling of inverter circuit output voltage and current sample, exchanges input sample and comprises AC-input voltage sampling and phase sample.
Dsp processor comprises the drive singal output of the first inverter circuit metal-oxide-semiconductor, the drive singal output of the second inverter circuit metal-oxide-semiconductor, the drive singal output of the 3rd inverter circuit metal-oxide-semiconductor and the drive singal output of commutation circuit.The drive singal of the inverter circuit metal-oxide-semiconductor that dsp processor exports is the signal group of two anti-phase pwm signals.
TMS320F2812 is the fixed point 32 bit DSP chip on the C2000 platform of American TI Company release, it is a digital signal processor, incorporate the optkmal characteristics of DSP and microcontroller, function ratio single-chip microcomputer is powerful many, be mainly used in embedded Control application, as pure digi-tal inverter, the fields such as digital motor control.Of many uses, the upgrade version of monolithic should be equivalent to.For application optimization, and effectively shorten product development cycle, provide the program development interface of direct embedded assembly language in C language, assembler language of can arranging in pairs or groups in the environment of C language carrys out coding.No matter the present embodiment is charge mode or inverter mode, and unification is controlled by DSP.
Output switching circuit comprises relay R LY1, RLY2 and relay drive circuit, and the live wire of ac input end and zero line connect live wire and the zero line of ac output end respectively by two contacts of relay R LY1 and RLY2.The driving signal input of relay drive circuit connects the commutation circuit drive singal output of dsp processor.
Filter capacitor C1 is connected on the input of the first inverter circuit, filter capacitor C2 is connected on the output of the second inverter circuit, filter capacitor C3 is connected on the input of the 3rd inverter circuit, and the LC filter circuit be made up of voltage L and filter capacitor C4 is connected on the output of the 3rd inverter circuit.
Inverter mode: DSP detect that battery incoming end (BAT+, BAT-) has electricity and ac input end does not input or inputs abnormal time, the output port PWM1 of DSP exports one group of anti-phase PWM drive singal to 4 metal-oxide-semiconductor Q1-Q4 of the first inverter circuit, 4 metal-oxide-semiconductor Q1-Q4 are in the operating state of pause switch, first inverter circuit changes the direct current that battery exports into alternating current, be linked into the primary coil of transformer T, and be coupled to secondary coil through transformer T.Now, output port PWM 2 no-output of DSP.4 metal-oxide-semiconductor Q5-Q8 of the second inverter circuit are without drive singal, and 4 the diode D5-D8s in parallel respectively with metal-oxide-semiconductor Q5-Q8 two ends form full bridge rectifier, and to the AC rectification that transformer T secondary coil exports, the second inverter circuit exports direct current.
DSP detect the second inverter circuit have direct current export after, its output port PWM3 is to 4 metal-oxide-semiconductor sine wave output drive singal (S.PWM signal) of the 3rd inverter circuit, and the high voltage direct current (BUS+) of input is converted to sinusoidal ac and exports through ac input end as inverter output voltage by the 3rd inverter circuit.
This process is boosted through DC/DC by storage battery power supply, and be transformed into the sinusoidal wave powering load of 220V/50HZ after inverter circuit, current direction is now as shown in the solid arrow in Fig. 2.
When bypass condition: DSP detects that ac input end has normal interchange to input, first three groups of drive singal of close port PWM1, PWM2, PWM3, then the port MAIN.RLY of DSP exports the drive singal of high level as relay drive circuit, two contact adhesives of relay R LY1 and RLY2, output switching circuit connects ac input end and ac output end, the alternating current of ac input end input exports through ac output end, and the uninterrupted inverter of backup type is operated in civil power bypass condition.
The port PWM2 of battery charging mode: DSP exports one group of anti-phase PWM drive singal to 4 metal-oxide-semiconductor Q5-Q8 of the second inverter circuit, and 4 metal-oxide-semiconductor Q5-Q8 of the second inverter circuit are in the operating state of pause switch.The alternating current of ac input end input is connected to the output of the 3rd inverter circuit through output switching circuit, 4 metal-oxide-semiconductor Q9-Q12 of the 3rd inverter circuit are without drive singal, be in cut-off state, 4 the diode D9-D12 being connected in parallel on metal-oxide-semiconductor Q9-Q12 two ends respectively form full bridge rectifier, to the AC rectification of the reverse input of output of the 3rd inverter circuit, the busbar voltage of high pressure is produced, by the input of the 3rd inverter circuit to the input Inverted Output direct current of the second inverter circuit after capacitor filtering.Second inverter circuit changes the direct current that the 3rd inverter circuit exports into alternating current, is coupled to primary coil after busbar voltage copped wave through transformer T.4 MOS Q1-Q4 pipes of the first inverter circuit are without drive singal, be in cut-off state 4 diodes and form full bridge rectifier, to the AC rectification of transformer T primary coil Inverted Output, after filter capacitor C1 filtering, the first inverter circuit Inverted Output direct current charges to battery.
Under battery charging mode, the flow direction of electric current as indicated by arrows with dashed lines in figure 2.
In sum, the uninterrupted inverter of the present invention's above embodiment backup type can have two kinds of mode of operations, and when not having civil power to input, storage battery is by inversion powering load (for DC/AC pattern); Lead up to bypass relay powering load after civil power input, separately lead up to exchange and change direct current and charge a battery (into AC DC pattern).The above example structure of the present invention is simple, uses components and parts less, and whole circuit is controlled to coordinate by a dsp processor, is quick on the draw, working stability.
Claims (10)
1. the uninterrupted inverter of backup type, comprise battery incoming end, ac input end, ac output end, output switching circuit and control circuit, it is characterized in that, comprise transformer and three inverter circuits, described inverter circuit is single-phase bridge inverter circuit, comprise 4 switching tubes and respectively with 4 fly-wheel diodes of 4 paralleled power switches; The input termination cell input terminal of the first inverter circuit, exports termination transformer; The input termination transformer secondary coil of the second inverter circuit, exports the input of termination the 3rd inverter circuit; The output termination ac output end of the 3rd inverter circuit, ac input end connects ac output end by output switching circuit; The sampling end of control circuit comprises battery sampling input, the second inverter circuit exports sampling input, the 3rd inverter circuit exports sampling input and exchanges input sample input; The drive end of three inverter circuit switching tubes and the drive end of the output switching circuit drive singal output that connection control circuit is corresponding respectively.
2. the uninterrupted inverter of backup type according to claim 1, it is characterized in that, control circuit comprises microprocessor and sampling isolation circuit, and the input of sampling isolation circuit comprises battery sampling input, the second inverter circuit exports sampling input, the 3rd inverter circuit exports sampling input and exchanges input sample input; The sampled signal input that sampling isolation circuit a plurality of output termination microprocessor is corresponding; Microprocessor comprises the drive singal output of the first inverter circuit switching tube, the drive singal output of the second inverter circuit switching tube, the drive singal output of the 3rd inverter circuit switching tube and the drive singal output of commutation circuit.
3. the uninterrupted inverter of backup type according to claim 2, is characterized in that, described microprocessor is dsp processor, and the drive singal of inverter circuit switching tube is the signal group of two anti-phase pwm signals.
4. the uninterrupted inverter of backup type according to claim 2, it is characterized in that, battery sampling comprises battery voltage sampling and battery current sampling, second inverter circuit exports sampling and comprises the second sampling of inverter circuit output voltage and current sample, 3rd inverter circuit exports sampling and comprises the 3rd sampling of inverter circuit output voltage and current sample, exchanges input sample and comprises AC-input voltage sampling and phase sample.
5. the uninterrupted inverter of backup type according to claim 2, it is characterized in that, output switching circuit comprises relay and relay drive circuit, and the live wire of ac input end and zero line connect live wire and the zero line of ac output end respectively by two contacts of relay; The driving signal input of relay drive circuit connects the commutation circuit drive singal output of microprocessor.
6. the uninterrupted inverter of backup type according to claim 1, is characterized in that, comprise the first filter capacitor, the second filter capacitor, filter capacitor and LC filter circuit, the first filter capacitor is connected on the input of the first inverter circuit; Second filter capacitor is connected on the output of the second inverter circuit; 3rd filter capacitor is connected on the input of the 3rd inverter circuit, and LC filter circuit is connected on the output of the 3rd inverter circuit.
7. the uninterrupted inverter of backup type according to claim 1, is characterized in that, described transformer is step-up transformer.
8. the uninterrupted inverter of backup type according to claim 1, it is characterized in that, control circuit detect that battery incoming end has electricity and the input of ac input end is abnormal time, control circuit exports one group of anti-phase PWM drive singal to the switching tube of the first inverter circuit, first inverter circuit changes the direct current that battery exports into alternating current, through transformer coupled to secondary coil; The switching tube of the second inverter circuit is without drive singal, and 4 diodes form full bridge rectifier, and to the AC rectification that transformer secondary coil exports, the second inverter circuit exports direct current; After control circuit detects that the second inverter circuit has direct current to export, to the switching tube sine wave output drive singal of the 3rd inverter circuit, the direct current of input is converted to sinusoidal ac and exports through ac input end by the 3rd inverter circuit.
9. the uninterrupted inverter of backup type according to claim 1, it is characterized in that, control circuit detects that ac input end has when normally inputting, first the drive singal of three inverter circuit switching tubes is closed, then to the drive end output drive signal of output switching circuit, output switching circuit connects ac input end and ac output end, and the alternating current of ac input end input exports through ac output end.
10. the uninterrupted inverter of backup type according to claim 9, is characterized in that, control circuit exports one group of anti-phase PWM drive singal to the switching tube of the second inverter circuit, and the switching tube of the second inverter circuit is in the operating state of pause switch; The alternating current of ac input end input is connected to the output of the 3rd inverter circuit through output switching circuit, the switching tube of the 3rd inverter circuit is without drive singal, 4 diodes form full bridge rectifier, to the AC rectification of the reverse input of output of the 3rd inverter circuit, by the input of the 3rd inverter circuit to the input Inverted Output direct current of the second inverter circuit; Second inverter circuit changes the direct current that the 3rd inverter circuit exports into alternating current, through transformer coupled to primary coil; The switching tube of the first inverter circuit is without drive singal, and 4 diodes form full bridge rectifier, and to the AC rectification of transformer Inverted Output, the first inverter circuit Inverted Output direct current charges to battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410555198.XA CN104333058A (en) | 2014-10-17 | 2014-10-17 | Backup uninterruptable inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410555198.XA CN104333058A (en) | 2014-10-17 | 2014-10-17 | Backup uninterruptable inverter |
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| Publication Number | Publication Date |
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| CN104333058A true CN104333058A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410555198.XA Pending CN104333058A (en) | 2014-10-17 | 2014-10-17 | Backup uninterruptable inverter |
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| CN (1) | CN104333058A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107813031A (en) * | 2017-12-08 | 2018-03-20 | 苏州绿恺动力电子科技有限公司 | Portable inverter arc welding system and its power control method |
| CN110336483A (en) * | 2019-07-23 | 2019-10-15 | 深圳市三瑞电源有限公司 | A kind of two-way inverter |
| CN116505779A (en) * | 2023-05-17 | 2023-07-28 | 江苏科曜能源科技有限公司 | Single-phase energy storage device |
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| CN107813031A (en) * | 2017-12-08 | 2018-03-20 | 苏州绿恺动力电子科技有限公司 | Portable inverter arc welding system and its power control method |
| CN110336483A (en) * | 2019-07-23 | 2019-10-15 | 深圳市三瑞电源有限公司 | A kind of two-way inverter |
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| CN116505779A (en) * | 2023-05-17 | 2023-07-28 | 江苏科曜能源科技有限公司 | Single-phase energy storage device |
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Application publication date: 20150204 |