CN202749900U - Singe-phase inverter for emergency power supply - Google Patents
Singe-phase inverter for emergency power supply Download PDFInfo
- Publication number
- CN202749900U CN202749900U CN 201220389977 CN201220389977U CN202749900U CN 202749900 U CN202749900 U CN 202749900U CN 201220389977 CN201220389977 CN 201220389977 CN 201220389977 U CN201220389977 U CN 201220389977U CN 202749900 U CN202749900 U CN 202749900U
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- resistance
- inversion
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses a single-phase inverter for emergency power supply, which belongs to the technical field of power electronic equipment. The single-phase inverter for the emergency power supply comprises a digital signal processor (DSP) chip, an analog signal detection module, a digital signal control module, a remote monitoring module, an inversion drive module, a single-phase full-bridge inversion module and a power supply module. Due to the adoption of the single-phase inverter, the independent functional modules are integrated inside one cabinet body, so that the schematic diagram of the cabinet body is simplified, and the defect of the traditional single-phase inverter of the emergency power supply that parts cannot be dismantled and replaced once being installed can be avoided; since the inversion drive module is provided with a saturation voltage drop detection output function, the inversion voltage, storage battery voltage, firefighting interlocking signal, forced signal and bypass signal can be sampled without an auxiliary switch power supply shell, the circuit design is simplified and the production cost is reduced; and a surge absorption branch is arranged inside a single-phase inversion bridge, so that the influence on the output voltage of the inverter from the turn-off surge current of a power switch tube can be reduced.
Description
Technical field
The utility model discloses a kind of single-phase inverter for the emergency power supply power, belong to the technical field of power electronic equipment.
Background technology
EPS (Emergency Power Supply, emergency power is supplied with) power supply, be in the current important building for electric power safeguard and security against fire and a kind of emergency power supply that adopts, it is mainly by input-output unit, charging module, battery pack, inverter, watch-dog, output switching installation composition.Inverter is the core devices of EPS power supply, and most of EPS general of the manufacturer from the market frequency converter of outsourcing uses as inverter, and there is following defective in frequency converter when inverter uses:
(1) frequency converter no-reverse change Voltage Feedback function causes the output voltage of EPS power supply along with battery voltage fluctuates, and has the risk of damaging load;
(2) most of frequency converter adopts the SPWM control algolithm, has the problem that amount of calculation is large, the bus utilance is low; Need add in addition digital signal control circuit, analog signal sample circuit, control is complicated, and cost is high;
(3) frequency converter of market purchasing, do not sample inverter voltage, battery tension and fire-fighting link, pressure, by-passing signal need additional module and auxiliary switching power supply housing, and cost increases.
The utility model content
Technical problem to be solved in the utility model is the deficiency for the above-mentioned background technology, and a kind of single-phase inverter for the emergency power supply power is provided.
The utility model is for realizing that above-mentioned utility model purpose adopts following technical scheme:
A kind of single-phase inverter for the emergency power supply power comprises dsp chip, analog signal detection module, Digital Signals module, remote monitoring module, inversion driver module, single-phase full bridge inversion module, power module; Wherein: described analog signal detection module, Digital Signals module, remote monitoring module, be connected with dsp chip respectively; The input of described inversion driver module is connected with dsp chip, and output is connected with the input of single-phase full bridge inversion module; The output of described single-phase full bridge inversion module is connected with Industrial Frequency Transformer; The power supply port of described dsp chip, the power supply port of inversion driver module are connected with the output of power module respectively.
Described a kind of single-phase inverter for the emergency power supply power, described inversion driver module comprises: first to fourth resistance, detect diode, clamp diode, the first electric capacity, first, second power switch pipe;
Wherein, described first, one end of the second resistance is connected with direct voltage source respectively, detect diode, the negative electrode of clamp diode, one end of the 3rd resistance is connected with the other end of the second resistance respectively, the other end of the 3rd resistance is connected with the gate pole of the first power switch pipe, the collector electrode of the first power switch pipe is connected with the other end of the first resistance, the grounded emitter of the first power switch pipe, ground connection after the anode of detection diode is connected with the 4th resistance, the anode of clamp diode is connected with the collector electrode of the second power switch pipe, the second power is connected with a utmost point of the first electric capacity from the base stage of switching tube, another utmost point ground connection of the first electric capacity, the grounded emitter of the second power switch pipe.
Described a kind of single-phase inverter for the emergency power supply power, described single-phase full bridge inversion module comprises: accumulator cell charging and discharging module, half-bridge converter, the input of described half-bridge converter is connected with the accumulator cell charging and discharging module, and output is connected with the first siding ring of Industrial Frequency Transformer; Wherein:
Described accumulator cell charging and discharging module comprises batteries, two relays, the 5th resistance, filter capacitor, the normally closed port of two relays connects respectively at the positive pole of batteries, one end of normal ported and the 5th resistance of the first relay is connected, the often positive pole ported, filter capacitor of the second relay is connected with the other end of the 5th resistance respectively, and the negative pole of filter capacitor is connected with the negative pole of batteries.
Described a kind of single-phase inverter for the emergency power supply power, described half-bridge converter comprises the brachium pontis of two parallel connections, wherein: each brachium pontis comprises a series arm that is comprised of two insulated gate bipolar transistors, and the sudden-wave absorbing branch road that is connected in parallel on described series arm two ends; Described sudden-wave absorbing branch road comprises sudden-wave absorbing diode, the sudden-wave absorbing electric capacity that is connected in series, and the sudden-wave absorbing resistance that is connected in parallel on sudden-wave absorbing diode two-stage.
The utility model adopts technique scheme, has following beneficial effect: each functional module that works independently is integrated in a cabinet, simplified the cabinet schematic diagram, make things convenient for wiring, can change according to the actual requirements functional module, avoid tradition to be used for the shortcoming that in a single day single-phase inverter that emergency power supplies with can't change parts behind the integrated dress cabinet; Because inversion driver module band saturation voltage drop detects output function, so need not auxiliary switching power supply housing can sample inverter voltage, battery tension and fire-fighting link, pressure, by-passing signal, simplified circuit design, reduced production cost; The design of sudden-wave absorbing branch road has reduced the impact of power switch pipe shutoff mutation current on inverter output voltage in the half-bridge converter.
Description of drawings
Fig. 1 is the schematic diagram that is used for the single-phase inverter of emergency power supply.
Fig. 2 is the schematic diagram of power module.
Fig. 3 is the schematic diagram of inversion driver module.
Fig. 4 is the schematic diagram of single-phase full bridge inversion module.
Fig. 5 is the schematic diagram of Digital Signals module.
The number in the figure explanation: R1-R12 is the first to the 12 resistance, D1-D4 is first to fourth diode, ZD1 is clamp diode for detection diode, ZD2, Q1-Q4 is first to fourth power switch pipe pipe, J1, J2 are first, second relay, IBGT1-IBGT4 is first to fourth insulated gate bipolar transistor, and JDQ1 is relay coil, and OP1 is optocoupler.
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to utility model:
As shown in Figure 1, the single-phase inverter for the emergency power supply power comprises: dsp chip, analog signal detection module, Digital Signals module, remote monitoring module, inversion driver module, single-phase full bridge inversion module, power module.Analog signal detection module, Digital Signals module, remote monitoring module, be connected with dsp chip respectively.The input of inversion driver module is connected with dsp chip, and output is connected with the input of single-phase full bridge inversion module, and the output of single-phase full bridge inversion module is connected with Industrial Frequency Transformer.The power supply port of dsp chip, the power supply port of inversion driver module are connected with the output of power module respectively.
Power module is as shown in Figure 2: when civil power was arranged, the rectifier bridge output voltage was higher than the batteries busbar voltage, so the rectifier bridge output voltage is powered to Switching Power Supply; When without civil power, batteries is powered to Switching Power Supply.Wherein two diodes play anti-reaction, prevent that positive rectification output bus from charging a battery and positive direct-current bus recoil rectifier bridge, damages rectification circuit.
The inversion driver module is illustrated in figure 3 as the grid clamping current foldback circuit that detects based on saturation voltage drop, comprising: first to fourth resistance R 1-R4, first detects diode ZD1, clamp diode ZD2, the first capacitor C 1, first, second power switch pipe Q1, Q2.First, the second resistance R 1, the end of R2 is connected with direct voltage source VCC respectively, first, clamp diode ZD1, the negative electrode of ZD2, one end of the 3rd resistance R 3 is connected with the other end of the second resistance R 2 respectively, the other end of the 3rd resistance R 3 is connected with the gate pole of the first power switch pipe Q1, the other end of the first resistance R 1 connects with the collector electrode that meets the first power switch pipe Q1 after the first diode D1 is connected, the grounded emitter of the first power switch pipe Q1, ground connection after the anode of detection diode ZD1 is connected with the 4th resistance R 4, the anode of clamp diode ZD2 is connected with the collector electrode of the second power switch pipe Q2, the base stage of the second power switch pipe Q2 is connected with a utmost point of the first capacitor C 1, another utmost point ground connection of the first capacitor C 1, the grounded emitter of the second power switch pipe Q2.
The first diode D1 plays buffer action, and when the first power switch pipe Q1 turn-offed, main circuit voltage V+ made the first diode D1 anti-inclined to one side; When the first power switch pipe Q1 opened, the Vce of the first power switch pipe Q1 only had about 3V, and more than 15V, the first diode D1 becomes positively biased and conducting to the power Vcc of protective circuit and gate driver circuit usually.When the first power switch pipe Q1 opened, the saturation voltage drop Vce of the first power switch pipe Q1 under the normal operating conditions was 3V, and the voltage that detects on the diode ZD1 is the pressure drop+Vce that opens of the first diode D1, and detected diode ZD1 and did not puncture.When the first power switch pipe Q1 is in over-current state; the Vce of the first power switch pipe Q1 rises to more than the 5V; the first diode D1 becomes cut-off from opening, and detects diode ZD1 and punctures conducting, and protective circuit obtains over-current signal and controls gate driver circuit and quit work.Clamp diode ZD2 about 6V, makes the first power switch pipe Q1 withdraw from saturation conduction and forward magnifying state to the grid potential clamper when the first power switch pipe Q1 overcurrent, and the electric current of main circuit is lowered.1 cushioning effect of the first capacitor C when detection diode ZD1 is breakdown, is at first charged to the first capacitor C 1, makes the first power switch pipe Q1 be unlikely to turn-off rapidly and cause inductive load to produce too high induced voltage.
The single-phase full bridge inversion module is as shown in Figure 4: the single-phase full bridge inversion module comprises accumulator cell charging and discharging module, the half-bridge converter that connects successively, the output of half-bridge converter is connected with the first siding ring of Industrial Frequency Transformer T1, and the second siding ring of Industrial Frequency Transformer T1 is parallel with the 4th capacitor C 4.The accumulator cell charging and discharging module comprises batteries, two relay J 1, J2, the 5th resistance R 5, filter capacitor EC1, the normally closed port of two relay J 1, J2 connects respectively at the positive pole of batteries, a normal ported end with the 5th resistance R 5 of the first relay J 1 is connected, the often positive pole ported, filter capacitor EC1 of the second relay J 2 is connected with the other end of the 5th resistance R 5 respectively, and the negative pole of filter capacitor EC1 is connected with the negative pole of batteries.Half-bridge converter comprises the brachium pontis of two parallel connections, a brachium pontis comprises: the series arm that is comprised of first and second insulated gate bipolar transistor IGBT1, IGBT2, and the sudden-wave absorbing branch road that is connected in parallel on described series arm two ends, the sudden-wave absorbing branch road comprises sudden-wave absorbing diode D2, the sudden-wave absorbing capacitor C 2 that is connected in series, and the sudden-wave absorbing resistance R 6 that is connected in parallel on sudden-wave absorbing diode D2 two-stage.Another brachium pontis comprises: the series arm that is comprised of third and fourth insulated gate bipolar transistor IGBT3, IGBT4, and the sudden-wave absorbing branch road that is connected in parallel on described series arm two ends, the sudden-wave absorbing branch road comprises sudden-wave absorbing diode D3, the sudden-wave absorbing capacitor C 3 that is connected in series, and the sudden-wave absorbing resistance R 7 that is connected in parallel on sudden-wave absorbing diode D3 two-stage.By switch I GBT, dc energy converts AC energy to, and the sudden-wave absorbing branch road absorbs the energy conversion amount that IGBT causes at the shutdown moment mutation current.This topology and Buck type DC-DC translation circuit have common part, the input direct-current busbar voltage of Buck type inverter has strictly limited the sinusoidal wave peak value of inverter voltage, therefore can export external Industrial Frequency Transformer T1 in inversion, this transformer raising voltage and filter action.
The analog signal that all are connected with dsp chip and original signal be electrical isolation all.Line voltage, inverter voltage mainly adopt Voltage Type Current Transformer and discharge far away road to sample, and wherein inverter voltage refers to the voltage after the output voltage of single-phase full bridge inversion module boosts through Industrial Frequency Transformer.Output current refers to that emergency power supply outputs to the electric current of load, is the civil power output current during mains-supplied, then is the electric current that common frequency power transformer secondary outputs to load during the inversion power supply, adopts 2 grades of current transformers and discharge circuit to sample; Accumulator DC is pressed and is adopted linear optical coupling and discharge circuit to sample.Because line voltage, inverter voltage, output current, busbar voltage need Real Time Monitoring, so these signals all need sampling always.Each carrier cycle sampling line voltage, inverter voltage, output current, charging current, accumulator battery voltage in the inversion process, with current sampling point adopt in inverter voltage substitution last complete modulation period corresponding sampled point calculate the prediction inverter output voltage, PID adjusting pulsewidth modulation ratio, fast and stable output wave are level and smooth sinusoidal wave; Each carrier cycle is to analyzing line voltage, fast detecting city power recovery; A plurality of carrier cycle computational load electric currents analyze whether surpass nominal load, carry degree according to band and adjust the inversion output time.
The Digital Signals module realizes switching value digital signal acquiring and contact output function as shown in Figure 5.One termination CTR1 signal of the 8th resistance R 8, the 9th resistance R 9 and the emitter that connects the 3rd power switch pipe after the 8th resistance R 8 is connected, connect the base stage of the 3rd power switch pipe after the tenth resistance R 10 and the 8th resistance R 8 are connected in series, the collector electrode of the 3rd power switch pipe connects the anode of optocoupler OP1; The minus earth of optocoupler, emitter connects the COM signal, collector electrode connects an end of the 11 resistance R 11, and an end of the 12 resistance R 12, the base stage of the 4th power switch pipe Q4 are connected with the other end of the 11 resistance R 11 respectively, another termination direct voltage source of the 12 resistance R 12; The emitter of the 4th power switch pipe Q4 connects direct voltage source, and collector electrode connects the negative electrode of the 4th diode D4, and the anode of the 4th diode connects the COM signal, and relay coil JDQ1 is connected with the two-stage of the 4th diode D4.IN is peripheral input among the switching value input figure, when signal was effective, IN received+and the ground of 24V, optocoupler OP1 conducting, INPUT becomes low level by high level, and INPUT is connected on the universal I/O port of DSP; CTR is connected on the universal I/O port of DSP in the switching value output map, as CTR when being high, and not conducting of optocoupler OP1, relay coil must not electricity, so do not work.When CTR when low, optocoupler OP1 conducting, it is electric that relay coil gets, relay work.
Remote monitoring module to host computer transmission invertor operation data and state, is realized RMON in real time.Remote monitoring module is communication module, is specially serial ports MODBUS protocol communication.The invertor operation data specifically refer to analog quantity, digital information, running state data.Analog data comprises line voltage, inverter voltage, output current, busbar voltage; Digital data refers to fire-fighting link, pressure, the collection of bypass input amount; Running state data refers to mains supply over-voltage, inverter overload, battery undervoltage, overcurrent, civil power output, inversion output data.
DSP master control system module adopts the TMS320F28027 of TI company as the core processing unit of inverter.The JTAG mouth is supported in the sequence of threads debugging; Analog signal line voltage, inverter voltage, output current, charging current, accumulator battery voltage are input to respectively among chip AD sampling channel ADC-A1, ADC-A2, ADC-A3, ADC-A4, the ADC-A6 and sample; 3 switching value input signals are input on the GPIO mouth, INPUT1-INPUT3 is followed successively by fire-fighting link signal, forced signal, by-passing signal, CTR1-CTR3 is output switch amount signal, control civil power/inversion switching, bus precharge, the action of under-voltage control relay; The SCI communication interface of remote monitoring module access chip; EPWM1, EPWM2 produce 2 groups of complementary PWM ripples that add the dead band, produce pulse two-foldization SVPWM waveform by algorithm, and the inversion driver module is exported low-voltage signal with DSP and become high-voltage signal driving IGBT; The short-circuit protection signal is connected to the TZ1 pin of chip, when being short-circuited, drags down EPWM1, EPWM2 output.
The single-phase inverter operation principle that is used for the emergency power supply is as follows: inverter powers on, initialization system configuration and variable, and adhesive the first relay J 1, and to bussed supply, EC1 is slow to charge batteries, the sampling accumulator battery voltage by resistance R.If under-voltage, not adhesive the second relay J 2 then, delay time and disconnected the first relay J 1 in 1 minute, after this per hour whether 1 the first relay J 1 of adhesive is recovered to analyze accumulator battery voltage, all do not have recovery such as 24 interior hour voltages, then be judged to be battery failures, no longer adhesive the first relay J 1 reduces battery discharge with the protection storage battery; Adhesive the second relay J 2 if battery pack is not under-voltage, batteries is directly powered to bus.In the normal course of operation such as J2 adhesive, as without by-passing signal, when municipal power failure, manual ringing are arranged, the slow startup of inverter entered inverter mode when self check was effective, changing emergent output after inverter voltage is stable over to; When the city power recovery, manually then or batteries when under-voltage inverter stops inversion invalid, self check time.Wherein self check is divided into a moon self check, year self check, moon self check batteries discharge 2 minutes, year self check is discharged to and under-voltagely should be not less than 90 minutes, otherwise to host computer newspaper corresponding failure, therefore inverter has whether normal function of automatic detection EPS power work, and battery pack is discharged, charge to keep the battery activity.
In sum, the single-phase inverter of supplying with for emergency power described in the utility model is integrated in a cabinet with each functional module that works independently, simplified the cabinet schematic diagram, make things convenient for wiring, can change according to the actual requirements functional module, avoid tradition to be used for the shortcoming that in a single day single-phase inverter that emergency power supplies with can't change parts behind the integrated dress cabinet; Because inversion driver module band saturation voltage drop detects output function, so need not auxiliary switching power supply housing can sample inverter voltage, battery tension and fire-fighting link, pressure, by-passing signal, simplified circuit design, reduced production cost; The design of sudden-wave absorbing branch road has reduced the impact of power switch pipe shutoff mutation current on inverter output voltage in the half-bridge converter.Described specific embodiment only be the utility model a kind of execution mode, every the utility model execution mode in a word that meets is all within protection range of the present utility model.
Claims (4)
1. single-phase inverter that is used for the emergency power supply power: it is characterized in that: comprise dsp chip, analog signal detection module, Digital Signals module, remote monitoring module, inversion driver module, single-phase full bridge inversion module, power module; Wherein: described analog signal detection module, Digital Signals module, remote monitoring module, be connected with dsp chip respectively; The input of described inversion driver module is connected with dsp chip, and output is connected with the input of single-phase full bridge inversion module; The output of described single-phase full bridge inversion module is connected with Industrial Frequency Transformer; The power supply port of described dsp chip, the power supply port of inversion driver module are connected with the output of power module respectively.
2. a kind of single-phase inverter for the emergency power supply power according to claim 1 is characterized in that described inversion driver module comprises: first to fourth resistance, detection diode, clamp diode, the first electric capacity, first, second power switch pipe;
Wherein, described first, one end of the second resistance is connected with direct voltage source respectively, detect diode, the negative electrode of clamp diode, one end of the 3rd resistance is connected with the other end of the second resistance respectively, the other end of the 3rd resistance is connected with the gate pole of the first power switch pipe, the collector electrode of the first power switch pipe is connected with the other end of the first resistance, the grounded emitter of the first power switch pipe, ground connection after the anode of detection diode is connected with the 4th resistance, the anode of clamp diode is connected with the collector electrode of the second power switch pipe, the second power is connected with a utmost point of the first electric capacity from the base stage of switching tube, another utmost point ground connection of the first electric capacity, the grounded emitter of the second power switch pipe.
3. a kind of single-phase inverter for the emergency power supply power according to claim 1, it is characterized in that described single-phase full bridge inversion module comprises: accumulator cell charging and discharging module, half-bridge converter, the input of described half-bridge converter is connected with the accumulator cell charging and discharging module, and output is connected with the first siding ring of Industrial Frequency Transformer; Wherein:
Described accumulator cell charging and discharging module comprises batteries, two relays, the 5th resistance, filter capacitor, the normally closed port of two relays connects respectively at the positive pole of batteries, one end of normal ported and the 5th resistance of the first relay is connected, the often positive pole ported, filter capacitor of the second relay is connected with the other end of the 5th resistance respectively, and the negative pole of filter capacitor is connected with the negative pole of batteries.
4. a kind of single-phase inverter for the emergency power supply power according to claim 3, it is characterized in that described half-bridge converter comprises the brachium pontis of two parallel connections, wherein: each brachium pontis comprises a series arm that is comprised of two insulated gate bipolar transistors, and the sudden-wave absorbing branch road that is connected in parallel on described series arm two ends; Described sudden-wave absorbing branch road comprises sudden-wave absorbing diode, the sudden-wave absorbing electric capacity that is connected in series, and the sudden-wave absorbing resistance that is connected in parallel on sudden-wave absorbing diode two-stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389977 CN202749900U (en) | 2012-08-08 | 2012-08-08 | Singe-phase inverter for emergency power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389977 CN202749900U (en) | 2012-08-08 | 2012-08-08 | Singe-phase inverter for emergency power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749900U true CN202749900U (en) | 2013-02-20 |
Family
ID=47709252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389977 Expired - Fee Related CN202749900U (en) | 2012-08-08 | 2012-08-08 | Singe-phase inverter for emergency power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749900U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769336A (en) * | 2012-08-08 | 2012-11-07 | 江苏银佳企业集团有限公司 | Single-phase inverter for emergency power supply |
| CN104219820A (en) * | 2013-05-31 | 2014-12-17 | 深圳市海洋王照明工程有限公司 | LED (Light Emitting Diode) drive and control circuit |
| CN108539836A (en) * | 2018-05-31 | 2018-09-14 | 奥克斯空调股份有限公司 | Include the charging circuit and air conditioner of anti-short-circuit protection circuit |
| CN111446736A (en) * | 2020-04-09 | 2020-07-24 | 成都思特电气科技有限公司 | Inversion emergency power supply device of wind turbine generator control system |
-
2012
- 2012-08-08 CN CN 201220389977 patent/CN202749900U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769336A (en) * | 2012-08-08 | 2012-11-07 | 江苏银佳企业集团有限公司 | Single-phase inverter for emergency power supply |
| CN102769336B (en) * | 2012-08-08 | 2015-04-01 | 江苏银佳企业集团有限公司 | Single-phase inverter for emergency power supply |
| CN104219820A (en) * | 2013-05-31 | 2014-12-17 | 深圳市海洋王照明工程有限公司 | LED (Light Emitting Diode) drive and control circuit |
| CN108539836A (en) * | 2018-05-31 | 2018-09-14 | 奥克斯空调股份有限公司 | Include the charging circuit and air conditioner of anti-short-circuit protection circuit |
| CN108539836B (en) * | 2018-05-31 | 2024-03-22 | 奥克斯空调股份有限公司 | Charging circuit comprising short-circuit protection circuit and air conditioner |
| CN111446736A (en) * | 2020-04-09 | 2020-07-24 | 成都思特电气科技有限公司 | Inversion emergency power supply device of wind turbine generator control system |
| CN111446736B (en) * | 2020-04-09 | 2023-03-28 | 成都思特电气科技有限公司 | Inversion emergency power supply device of wind turbine generator control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104065157B (en) | Uninterruptible power supply with improved power supply reliability | |
| CN204119020U (en) | A kind of PFC protective circuit and air conditioner | |
| CN102769336B (en) | Single-phase inverter for emergency power supply | |
| CN108306320A (en) | A kind of energy accumulation current converter and energy storage converter system | |
| CN104730441A (en) | Thyristor fault detecting device | |
| CN203352454U (en) | Voltage-type high-frequency constant current source | |
| CN102035237A (en) | Wind-light-electricity complementary intelligent management system | |
| CN103441694A (en) | Large-power distribution type energy storage converter | |
| CN202749900U (en) | Singe-phase inverter for emergency power supply | |
| CN203705598U (en) | Thyristor fault detection device | |
| CN206272229U (en) | For the reverse-connection preventing circuit of photovoltaic DC-to-AC converter direct current input side | |
| CN203445831U (en) | Independent photovoltaic power generation device based on four-switch five-level inverter | |
| CN100492808C (en) | Wind energy and solar energy power generation control inversion integrated power supply | |
| CN203827203U (en) | High-power optical storage integrated converter | |
| CN103490499A (en) | Uninterrupted power supply method with power module and battery combined | |
| CN202474856U (en) | Photovoltaic inverter system with direct-current false connection prevention function | |
| CN215580519U (en) | 5G basic station emergency power supply device | |
| CN102427264A (en) | Design method of solar power supply controller | |
| CN210577924U (en) | Charging circuit based on solar charging and system thereof | |
| CN108899989A (en) | A kind of alternating current-direct current automatic switchover power supply system | |
| CN103576034A (en) | Detection device of charger power module | |
| CN210092957U (en) | Direct-current power supply device of transformer substation | |
| CN202696172U (en) | Improved inverter for battery discharge of electric automobile | |
| CN208571693U (en) | A kind of alternating current-direct current automatic switchover power supply system | |
| CN112234856A (en) | Portable power supply capable of intelligently switching alternating current and direct current and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu silver electronic equipment Co., Ltd. Assignor: Jiangsu Yinjia Group Co., Ltd. Contract record no.: 2014320000726 Denomination of utility model: Single-phase inverter for emergency power supply Granted publication date: 20130220 License type: Common License Record date: 20141117 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |