CN1423389A - Bus-controlled parallel uninterrupted power source (UPS) system - Google Patents
Bus-controlled parallel uninterrupted power source (UPS) system Download PDFInfo
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Abstract
Parallel UPS system controlled by bus relates to power source equipment technology with the following scheme: UPS parallel control system is put in and connected with UPS, realizing N+1 redundant parallel operation and every UPS will supply electricity to load and shares the load to meet the requirement of parallel operation having very high real time data process capability to ensure the real time control and reliability of UPS parallel control system increased greatly.
Description
Technical field:
The present invention relates to the power supply unit technical field, refer in particular to a kind of parallel uninterrupted power supply (UPS) system of total line traffic control.
Background technology:
Because have influences such as various Harmonic Interference, sudden strain of a muscle are broken, surge in the actual power supply grid, power supply quality is relatively poor, nor stable; In addition, because the existence of factors such as the fault of thunderbolt, supply line, contingency also can cause the interruption of power supply; For common family, these influences can't cause serious consequence, but, for some special industry and department, such as industry and departments such as signal system, computer network system, large data processing and the switching center of banking system, securities broker company, telecommunication department, railway and civil aviaton, national defence, cause interference because of power supply quality is bad in case be difficult to interruption of imagination electric power system or electric power system, will produce which type of consequence, cause most loss; Along with the progress in epoch and the development of society, national economy all departments, each field require more and more higher with electric unit to the power supply quality of electric power system, yet the requirement of the overwhelming majority is that utility grid electric power system institute is implacable, and the demand that uninterrupted power supply (UPS-Uninterruptible Power Supply) is complied with society produces thereupon; But as a single power electronic equipment, the reliability of its work can not be absolute, and when always having it to break down, the failure rate of its working life phase can not reach zero; In case UPS damages, and still can cause the interruption of electric; In order further to improve reliability to electric, simultaneously can also enlarge power supply capacity, both at home and abroad all in the parallel Operation Control technology of making great efforts research UPS, up to the present, parallel control technology has experienced from the development of stages such as centralized control, principal and subordinate's control to the advanced stage of disperseing logic, the control of no interconnection line, early stage centralized control adopts the cabinet of concentrating in parallel, and this kind mode its overload adaptive capacity strong moment, and dilatation by stages; But, its control technology is comparatively complicated, in case the centralized control system circuit breaks down, the power supply of whole ups power system will be interrupted, the MTBF of its whole ups power parallel control system is the same with the MTBF of parallel operation ups power, does not improve the functional reliability of ups power system; Principal and subordinate's control mode adopts is to be main frame with a certain parallel operation ups power, remaining is a slave, carry out Parallel Control work, after having avoided Centralized Controller to break down, the collapse of whole system, the functional reliability of system increases with respect to centralized control, the control of this kind control mode be connected simple; Slave moves under zero load, electrical energy saving; But slave rises to main frame and has switching time, and the load changing to 100% of its slave makes slave will be subjected to heavy current impact, and is fragile, and main frame and slave also exist long-term work and idle problem, cause two ageing equipment degree varies; In addition, also have a kind of parallel operation module parallel way, it is except the advantage with centralized control, and also because of there not being individual components, debugging is simple, the reliability height, still, and along with the also increase of board number, its control technology complexity, the input of equipment is bigger.
Summary of the invention:
The object of the present invention is to provide a kind of advantage that has above-mentioned three kinds of parallel waies concurrently, and parallel uninterrupted power supply (UPS) system of total line traffic control of being overcome of its shortcoming; It has advantages such as load sharing, the difference of dereliction slave, average fault-free length blanking time.
The present invention is achieved through the following technical solutions: the UPS parallel control system places in the UPS and is connected with the control board of UPS, and interconnects by data/address bus; The detection method of circulation is I for the circulation of hypothesis between two UPS in the described parallel control system
H, the output current of each UPS is I
L1And I
L2, and construct an electric current I consistent with the circulation direction
HB, be by the output current of vector superposed back two ups powers: I
1"=I
L1+ I
H+ I
HB, I
2"=I
L2+ I
H-I
HBThe circulation compensating circuit superposes for the A phase current testing circuit of the A phase output AC electric current that detects ups power carries out phasor with A circulation offset current mutually, and B phase, C facies principle are identical.
The DSP main program flow of UPS parallel control system is to each I/O interface behind the program start, communication interface, the A/D translation interface, multiplex interface, the page address initialization, whether then detect this machine inverter (INV) powers, detect as then not continuing, if any power supply, whether the INV that then detects other UPS powers, as do not return not that signal then changes bypass start-up, as to return be that signal then detects each INV, whether SYN is ready, as otherwise send the bypass request, then open bypass in this way, the inversion static switch, send this machine INV power supply signal then, detect INV and whether be in the OFF state, as otherwise continue to detect, then close INV-SVR in this way, remove the INV power supply signal, then send the bypass request, all send the bypass request as all UPS and then switch to bypass, as denying, then continue to wait for, after all UPS switch to bypass condition, turn back to the program initial state.
The DSP control program flow process of UPS parallel control system is initialization transpose memory unit behind the program start, open then direct current sampling channel, adopt and sampled signal is handled, storage, then open output current sampling channel, adopt and sampled signal is handled, storage, open again direct voltage sampling channel, adopt and sampled signal is handled, storage, at last, open communication channel calculates parallel operation systems exchange data, the line data analyzing and processing of going forward side by side with other, then start the inverter output voltage control algolithm program of transferring successively, transfer the Synchronization Control algorithm routine, phase modulation bit-steering algorithm program is returned after complete.
The signal that the inversion output to back level UPS that the Waveform Control interface circuit of UPS parallel control system sends digital signal processor DSP is controlled carries out level match;
The synchronizing signal that the phase control interface circuit sends DSP is delivered to after level conversion and impedance matching in the level UPS control circuit of back as the phase-locked given signal of UPS;
The signal that the control static switch that logic switching interface circuit sends DSP switches by certain logical relation goes to drive the static switch action after level translation, finish corresponding logic switching controls;
The dc bus current testing circuit detects the size of the electric current that flows through on the UPS rectifier output dc bus, and this dc bus current is delivered to the AD interface of DSP again through the conversion of direct current Hall element after level matching circuit;
Deliver to the AD interface of DSP after the DC bus-bar voltage conversion of DC bus-bar voltage testing circuit with the output of UPS rectifier;
Behind output current and output voltage detecting circuit the output voltage and output current process AC voltage transformer and AC current transformer isolation with UPS, pass through level conversion again, deliver to the AD interface of UPS, the feedback quantity of output voltage and the output current of UPS being controlled in real time as the control program of DSP;
City's power detection circuit is delivered to electric main among the DSP after conversion, as control ups power and the synchronous set-point of civil power;
The operating state of the UPS that parallel operation system communication interface circuit is in parallel with each (frequency of output voltage amplitude, output voltage, the phase place of output voltage, switch logic requirement etc.) is delivered on the communication bus, and receive the working state signal that other UPS sends from communication bus, carry out the important evidence that sharing control, logic are switched as parallel system;
All detection limits are finished analog/digital conversion and digital filtering to each analog parameter in DSP after the AD interface is delivered to DSP; Each analog quantity is promptly come out useful Signal Separation down from strong noise background through the interference of noise of drawing up after the optimization digital filtering again after the AD conversion, guarantees the authenticity and the validity of detection signal;
The switch logic requirement that the UPS of other parallel runnings that the main program of DSP receives according to the communication interface circuit of UPS parallel control system sends, and carry out corresponding logic analysis and judgement according to the operation conditions of current machine, control the static switch of the UPS of all parallel runnings, switch to by-path running status simultaneously or switch to the invertor operation state simultaneously, finish the logic switching controls of parallel operation system;
The output voltage amplitude that the UPS of other parallel runnings that the control program of DSP receives according to the communication interface circuit of UPS parallel control system sends, the frequency of output voltage, the data of output voltage phase place, and the output voltage amplitude of this machine that receives according to this machine AD interface circuit, the frequency of output voltage, the data of output voltage phase place, through over-sampling and after handling, call output voltage amplitude control algolithm program, the FREQUENCY CONTROL algorithm routine of output voltage, the phase control algorithm routine of output voltage, phase place to the UPS output voltage, frequency, parameters such as amplitude are controlled in real time, make the UPS of each parallel running send identical output voltage amplitude, the frequency of identical output voltage, identical output voltage phase place.
The present invention is because in the process that the logic of carrying out the parallel operation system is switched, the branch that does not have main frame or slave, therefore any one is in parallel running and cuts the UPS2 that is in load condition and can withdraw from from the UPS parallel system of parallel running, perhaps any (perhaps new start) UPS who is in Light Condition can incorporate into has had the N platform just in the UPS of parallel running parallel running system, realizes the parallel running of N+1 platform UPS; Just realize the operation of N+1 redundant parallel; Make each UPS jointly to electric, and realize the average load sharing of UPS of all parallel runnings, satisfy the specification requirement of parallel running.
The present invention adopts the dicyclo current-sharing control method that output voltage and output current are regulated simultaneously, has improved the dynamic responding speed of system and the dynamic stability of parallel operation system; The parallel operation control system adopts high speed digital signal processor DSP as main control unit, being aided with necessary peripheral hardware circuit again realizes, make native system have very high real time data processing ability, because every instruction cycle of DSP has only 20ns, can handle in real time the various data of parallel operation system, thereby guarantee the control real-time of UPS parallel control system; Also have following advantage simultaneously: 1, reliability increases substantially, and is applicable in the environment of serious electromagnetic interference; 2, can form more jumbo high-quality AC power; 3, can form redundant system to improve system reliability; 4, can be neatly the capacity of system be configured, be convenient to dilatation; 5, system has good maintainability, and separate unit UPS can release operation in short-term, guarantees the power-on serving of system; 6, each of parallel system unit can be realized current-sharing automatically; 7, the output harmonic wave component of each UPS in the parallel system can compensate mutually, has improved the quality of output voltage.
Description of drawings:
The present invention is further described below in conjunction with accompanying drawing:
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 3 is main program flow chart of the present invention;
Accompanying drawing 4 is controlled program flow diagram for the present invention;
Simplification schematic diagram when accompanying drawing 5 is 22 parallel connections of two UPS inverters of the present invention;
Inverter 22 output current polar plots when accompanying drawing 6 is two UPS parallel connections of the present invention;
Inverter 22 output current wave figure when accompanying drawing 7 is two UPS parallel connections of the present invention;
Output voltage was regulated hardware and is implemented block diagram when accompanying drawing 8 was two UPS parallel connections of the present invention.
Embodiment:
See accompanying drawing 1-4, UPS parallel control system 1 of the present invention places in the UPS2 and is connected with UPS2, and interconnects by data/address bus 4; Wherein, UPS parallel control system 1 comprises as the digital signal processor DSP of core and Waveform Control interface circuit, phase control interface circuit, logic control switching circuit, parallel operation condition indication circuit, dc bus current testing circuit, DC bus-bar voltage testing circuit, output current and output voltage detecting circuit, city's power detection circuit, parallel operation system communication interface circuit, the output logic change detection circuit of peripheral function element circuit; And the digital signal processor DSP of UPS parallel control system 1 is connected with rectifier 21 outputs, inverter 22 outputs and other UPS parallel control system 1 of civil power input, UPS by city's power detection circuit, dc bus current testing circuit, DC bus-bar voltage testing circuit, output current and output voltage detecting circuit, parallel operation system communication interface circuit respectively.
The function of the Waveform Control interface circuit of UPS parallel control system 1 is that the signal that the inversion output to back level UPS2 that digital signal processor DSP sends is controlled is carried out level match, makes it meet certain precision and amplitude requirement.
The function of phase control interface circuit is that the synchronizing signal that DSP sends is delivered to after level conversion and impedance matching in the level UPS2 control circuit of back as the phase-locked given signal of UPS2.
The function of logic switching interface circuit is that the signal that the control static switch 23 that DSP sends switches by certain logical relation is gone to drive static switch 23 actions after level translation, finishes corresponding logic switching controls.
The function of dc bus current testing circuit is to detect the size of the electric current that flows through on the UPS rectifier output dc bus, and this dc bus current is delivered to the AD interface of DSP again through the conversion of direct current Hall element after level matching circuit.
The function of DC bus-bar voltage testing circuit is to deliver to the AD interface of DSP after the DC bus-bar voltage conversion with UPS2 rectifier 21 output.
The function of output current and output voltage detecting circuit is with after the output voltage of UPS2 and output current process AC voltage transformer and the AC current transformer isolation, pass through level conversion again, deliver to the AD interface of UPS, the feedback quantity of output voltage and the output current of UPS being controlled in real time as the control program of DSP.
The function of city's power detection circuit is that electric main is delivered to after conversion among the DSP, as control UPS2 power supply and the synchronous set-point of civil power.
The function of parallel operation system communication interface circuit is that the operating state (frequency of output voltage amplitude, output voltage, the phase place of output voltage, switch logic requirement etc.) of UPS2 that each is in parallel is delivered on the communication bus, and receive the working state signal that other UPS2 sends from communication bus, carry out the important evidence that sharing control, logic are switched as parallel system.
All detection limits are finished analog/digital conversion and digital filtering to each analog parameter in DSP after the AD interface is delivered to DSP; Each analog quantity is promptly come out useful Signal Separation down from strong noise background through the interference of noise of drawing up after the optimization digital filtering again after the AD conversion, guarantees the authenticity and the validity of detection signal.
The switch logic requirement that the UPS2 of other parallel runnings that the main program of DSP receives according to the communication interface circuit of UPS parallel control system 1 sends, and carry out corresponding logic analysis and judgement according to the operation conditions of current machine, control the static switch 23 of the UPS of all parallel runnings, switch to by-path running status simultaneously or switch to the invertor operation state simultaneously, finish the logic switching controls of parallel operation system; Its flow process is shown in Figure of description 3, behind the program start to each I/O interface, communication interface, the A/D translation interface, multiplex interface, the page address initialization, whether then detect this machine inverter (INV) powers, detect as then not continuing, if any power supply, whether the INV that then detects other UPS powers, as do not return not that signal then changes bypass start-up, after this, as to return be that signal then detects each INV, whether SYN ready, as otherwise send the bypass request, then open bypass in this way, the inversion static switch, send this machine INV power supply signal then, detect INV and whether be in the OFF state, as otherwise continue to detect, then close INV-SVR in this way, remove the INV power supply signal, then send the bypass request, all send the bypass request as all UPS and then switch to bypass, as denying, then continue to wait for that the program that turns back to begins to lie prostrate attitude after all UPS switch to bypass condition.
The output voltage amplitude that the UPS2 of other parallel runnings that the control program of DSP receives according to the communication interface circuit of UPS parallel control system 1 sends, the frequency of output voltage, the data of output voltage phase place, and the output voltage amplitude of this machine that receives according to this machine AD interface circuit, the frequency of output voltage, the data of output voltage phase place, through over-sampling and after handling, call output voltage amplitude control algolithm program, the FREQUENCY CONTROL algorithm routine of output voltage, the phase control algorithm routine of output voltage, phase place to the UPS2 output voltage, frequency, parameters such as amplitude are controlled in real time, make the UPS of each parallel running send identical output voltage amplitude, the frequency of identical output voltage, identical output voltage phase place, this program circuit is shown in Figure of description 4, initialization transpose memory unit behind the program start, open then direct current sampling channel, adopt and sampled signal is handled, storage, then open output current sampling channel, adopt and sampled signal is handled, storage, open again direct voltage sampling channel, adopt and sampled signal is handled, storage, at last, open communication channel, calculate parallel operation systems exchange data with other, the line data analyzing and processing of going forward side by side, then start the inverter output voltage control algolithm program of transferring successively, transfer the Synchronization Control algorithm routine, phase modulation bit-steering algorithm program is returned after complete.
In the parallel operation process of two UPS2, the output voltage that needs to guarantee two UPS2 is not only wanted unanimity, and amplitude is also consistent, otherwise, between two UPS2, return to exist and gain merit and idle circulation; For meritorious circulation mainly is to be caused by phase place or frequency difference, and idle circulation is then mainly caused by the amplitude difference of voltage; As regulating idle circulation, then need the amplitude of regulation voltage; Idle size is normally determined by the output current average detection to inverter 22; But, as only detecting its size, and its defence line is not distinguished, then be difficult to realize idle dividing equally, can not reach the effect of inhibition to idle circulation; As shown in Figure 5, be the inverter 22 of two UPS2 simplification schematic diagram when in parallel, unequal when the output voltage amplitude of two UPS2, as V1＞V2 (supposing their phase place unanimity), then have idle circulation in the circuit
Flow to another UPS2 from a UPS2, and,
Hysteresis V
190 degree, figure is as can be known thus: the output current detected value of two UPS2 is respectively:
Its vector correlation as shown in Figure 6, from figure as can be known because
Existence, make
Phase place inconsistent, but the amplitude of the two is in full accord, if only detect the size of electric current this moment, can't reach idle dividing equally; For head it off, realize idle dividing equally, can adopt following method: as shown in Figure 7, first hypothesis v1＞v2 detects voltage v to backward shift 90 degree with the output of inverter, is multiplied by a proportionality coefficient again, obtains the electric current I of a people for making
HB, the output detection current i 1 and the i2 that it are superimposed upon two UPS respectively go up (I again
1"=I
L1+ I
H+ I
HB, I
2"=I
L2+ I
H-I
HB), thereby obtain new detection electric current, carry out adjusting according to this new electric current to v1, v2, realize that the hardware of this control method can be realized with reference to attached block diagram illustrated in Figure 8.
Claims (5)
1, parallel uninterrupted power supply (UPS) system of total line traffic control is characterized in that: the UPS parallel control system places in the UPS and is connected with the control board of UPS, and interconnects by data/address bus.
2, parallel uninterrupted power supply (UPS) system of total line traffic control according to claim 1 is characterized in that: the detection method of circulation is I for the circulation of hypothesis between two UPS in the parallel control system
H, the output current of each UPS is I
L1And I
L2, and construct an electric current I consistent with the circulation direction
HB, be by the output current of vector superposed back two ups powers: I
1"=I
L1+ I
H+ I
HB, I
2"=I
L2+ I
H-I
HB
3, parallel uninterrupted power supply (UPS) system of total line traffic control according to claim 2, it is characterized in that: the circulation compensating circuit superposes for the A phase current testing circuit of the A phase output AC electric current that detects ups power carries out phasor with A circulation offset current mutually, and B phase, C facies principle are identical.
4, parallel uninterrupted power supply (UPS) system of total line traffic control according to claim 1, it is characterized in that: the DSP main program flow of UPS parallel control system is to each I/O interface behind the program start, communication interface, the A/D translation interface, multiplex interface, the page address initialization, whether then detect this machine inverter (INV) powers, detect as then not continuing, if any power supply, whether the INV that then detects other UPS powers, as do not return not that signal then changes bypass start-up, as to return be that signal then detects each INV, whether SYN is ready, as otherwise send the bypass request, then open bypass in this way, the inversion static switch sends this machine INV power supply signal then, detects INV and whether is in the OFF state, as otherwise continue to detect, then close INV-SVR in this way, remove the INV power supply signal, then send the bypass request, all send the bypass request as all UPS and then switch to bypass, as not, then continue to wait for, after switching to bypass condition, all UPS turn back to the program initial state.
5, parallel uninterrupted power supply (UPS) system of total line traffic control according to claim 1, it is characterized in that: the DSP control program flow process of UPS parallel control system is initialization transpose memory unit behind the program start, open then direct current sampling channel, adopt and sampled signal is handled, storage, then open output current sampling channel, adopt and sampled signal is handled, storage, open again direct voltage sampling channel, adopt and sampled signal is handled, storage, at last, open communication channel, calculate parallel operation systems exchange data with other, the line data analyzing and processing of going forward side by side then starts the inverter output voltage control algolithm program of transferring successively, transfer the Synchronization Control algorithm routine, phase modulation bit-steering algorithm program is returned after complete.
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| CN 01130036 CN1423389A (en) | 2001-12-07 | 2001-12-07 | Bus-controlled parallel uninterrupted power source (UPS) system |
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-
2001
- 2001-12-07 CN CN 01130036 patent/CN1423389A/en active Pending
Cited By (54)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394667C (en) * | 2003-07-30 | 2008-06-11 | 飞瑞股份有限公司 | Uninterrupted power source module parallel control method and system thereof |
| CN100352126C (en) * | 2004-04-01 | 2007-11-28 | 台达电子工业股份有限公司 | Emergency power surply system using shared battery and input current balance method |
| CN101282076B (en) * | 2007-03-29 | 2012-10-10 | 英特赛尔美国股份有限公司 | Multi-module current sharing scheme |
| WO2008145011A1 (en) * | 2007-05-24 | 2008-12-04 | Liebert Corporation | Parallel signal transmitting method of uninterrupted power supply |
| US8290103B2 (en) | 2007-05-24 | 2012-10-16 | Liebert Corporation | Method for transmitting parallelization signals of uninterruptible power supplies |
| CN101459349A (en) * | 2007-12-14 | 2009-06-17 | 伊顿动力品质公司 | Battery load allocation in parallel-connected uninterruptible power supply systems |
| CN101459349B (en) * | 2007-12-14 | 2013-07-17 | 伊顿动力品质公司 | Battery load allocation in parallel-connected uninterruptible power supply system |
| CN101714761B (en) * | 2008-10-08 | 2013-01-30 | 富士电机株式会社 | An uninterrupted power supply device |
| CN101656431B (en) * | 2009-06-22 | 2011-06-29 | 伊博电源（杭州）有限公司 | Digital management system and method of distributed power supply system |
| CN101944763B (en) * | 2010-08-16 | 2012-11-14 | 成都市华为赛门铁克科技有限公司 | Load current allocation control method and device |
| CN101944763A (en) * | 2010-08-16 | 2011-01-12 | 成都市华为赛门铁克科技有限公司 | Load current allocation control method and device |
| CN102025187A (en) * | 2010-12-24 | 2011-04-20 | 深圳市华通电气设备有限公司 | Integrated UPS (Uninterrupted Power Supply) parallel system of underground weak current |
| CN103477532B (en) * | 2011-02-24 | 2015-04-01 | 施耐德电气It公司 | Service access point for an uninterruptible power supply |
| CN103477532A (en) * | 2011-02-24 | 2013-12-25 | 施耐德电气It公司 | Service access point for an uninterruptible power supply |
| CN102122833B (en) * | 2011-03-25 | 2013-08-21 | 清华大学 | Power supply method of non-master/slave self-current-sharing grid-connected parallel uninterrupted power supply system |
| CN102122833A (en) * | 2011-03-25 | 2011-07-13 | 清华大学 | Non-master/slave self-current-sharing grid-connected parallel uninterrupted power supply system and power supply method thereof |
| CN102739385A (en) * | 2011-03-31 | 2012-10-17 | 力博特公司 | Method and system for logic signal synchronization and synthesis |
| CN102739385B (en) * | 2011-03-31 | 2014-12-10 | 力博特公司 | Method and system for logic signal synchronization and synthesis |
| CN103001269A (en) * | 2011-09-15 | 2013-03-27 | 硕天科技股份有限公司 | Parallel-connection control method for online interactive type uninterrupted power supply system |
| CN102624075B (en) * | 2012-04-10 | 2014-01-22 | 河北实华科技有限公司 | Multimachine parallel connection method and scheme of modular UPS (uninterrupted power supply) system |
| CN102624075A (en) * | 2012-04-10 | 2012-08-01 | 河北实华科技有限公司 | Multimachine parallel connection method and scheme of modular UPS (uninterrupted power supply) system |
| TWI481155B (en) * | 2012-12-28 | 2015-04-11 | Jw Electronics Co Ltd | Redundant power supply system and equipment matrix using the same |
| CN103166463B (en) * | 2013-02-28 | 2015-10-28 | 南京航空航天大学 | A kind of multichannel adjustable DC power supply |
| CN103166463A (en) * | 2013-02-28 | 2013-06-19 | 南京航空航天大学 | Multichannel adjustable direct-current (DC) power supply |
| CN104052050A (en) * | 2013-03-12 | 2014-09-17 | 固纬电子实业股份有限公司 | Power source parallel system employing current limit control |
| CN104052258A (en) * | 2013-03-12 | 2014-09-17 | 万国半导体股份有限公司 | Fault Tolerant Power Supply Incorporating Intelligent Load Switch To Provide Uninterrupted Power |
| CN103248257B (en) * | 2013-04-16 | 2015-04-08 | 哈尔滨工程大学 | Single-module seamless thermal input and ablation control method in parallel inverter power supply |
| CN103248257A (en) * | 2013-04-16 | 2013-08-14 | 哈尔滨工程大学 | Single-module seamless thermal input and ablation control method in parallel inverter power supply |
| CN103715754A (en) * | 2013-12-17 | 2014-04-09 | 华为技术有限公司 | UPS and power supply system |
| CN104868579B (en) * | 2014-02-21 | 2019-09-13 | Abb 瑞士股份有限公司 | Redundant uninterruptible electric power supply system |
| CN104868579A (en) * | 2014-02-21 | 2015-08-26 | 通用电气公司 | Redundant Uninterruptible Power Supply Systems |
| CN104917278B (en) * | 2014-03-11 | 2019-12-24 | Abb瑞士股份有限公司 | Redundant uninterruptible power supply system |
| CN104917278A (en) * | 2014-03-11 | 2015-09-16 | 通用电气公司 | Redundant uninterruptible power supply systems |
| CN104917277A (en) * | 2014-03-11 | 2015-09-16 | 通用电气公司 | Redundant uninterruptible power supply systems |
| CN104917277B (en) * | 2014-03-11 | 2019-12-24 | Abb 瑞士股份有限公司 | Redundant uninterruptible power supply system |
| CN105305532B (en) * | 2014-07-17 | 2020-04-17 | Abb瑞士股份有限公司 | System and method for managing backfeed in an uninterruptible power supply system |
| CN105305532A (en) * | 2014-07-17 | 2016-02-03 | 通用电气公司 | Systems and methods for managing power backfeed in uninterruptible power supply systems |
| CN104503523A (en) * | 2014-10-31 | 2015-04-08 | 广东易事特电源股份有限公司 | UPS (uninterrupted power supply) parallel output system, master and slave units of UPS parallel output system and UPS parallel output voltage control method and device |
| CN104503523B (en) * | 2014-10-31 | 2016-06-15 | 广东易事特电源股份有限公司 | UPS Parallel opertation system and main frame therein and from machine, UPS Parallel opertation voltage control method and device |
| CN104659822A (en) * | 2015-03-02 | 2015-05-27 | 北京华盛源通科技有限公司 | Multi-machine parallel connection method and parallel connection structure for modular two-way intelligent power |
| CN106100328A (en) * | 2016-07-18 | 2016-11-09 | 杭州重芯力科技有限公司 | Numerical control regulated power supply and pressure regulation method |
| CN109546740A (en) * | 2017-09-22 | 2019-03-29 | 武汉亿维登科技发展有限公司 | A kind of UPS parallel computer system |
| CN107733218A (en) * | 2017-09-27 | 2018-02-23 | 深圳欧陆通电子有限公司 | A kind of and electromechanical source high power synchronously opens machine control method and system |
| CN109617221A (en) * | 2018-11-19 | 2019-04-12 | 浙江德塔森特数据技术有限公司 | The uninterruptible power system and its network-building method of adjustable power configuration |
| CN109995134B (en) * | 2019-04-29 | 2021-04-27 | 漳州科华技术有限责任公司 | Power supply system and current equalizing system and method of independent bypass of power supply system |
| CN109995134A (en) * | 2019-04-29 | 2019-07-09 | 漳州科华技术有限责任公司 | A kind of power supply system and its current-equalizing system and current equalizing method independently bypassed |
| CN110829584A (en) * | 2019-11-28 | 2020-02-21 | 广西电网有限责任公司南宁供电局 | Uninterrupted power source dynamic power distribution system based on battery state |
| CN111641251A (en) * | 2020-06-11 | 2020-09-08 | 深圳爱易瑞科技有限公司 | 5G communication base station power supply with charging and discharging circuit |
| CN111641251B (en) * | 2020-06-11 | 2021-07-06 | 南京灵达电气有限责任公司 | 5G communication base station power supply with charging and discharging circuit |
| CN111984047A (en) * | 2020-07-20 | 2020-11-24 | 科华恒盛股份有限公司 | Multi-module system current sharing control method and device and terminal equipment |
| WO2022020982A1 (en) * | 2020-07-25 | 2022-02-03 | 华为数字能源技术有限公司 | Non-current-sharing ups apparatus, shunting method, and ups parallel connection system |
| CN113541187A (en) * | 2021-07-13 | 2021-10-22 | 湖南普莱思迈电子科技有限公司 | Intermediate frequency sine wave alternating current power supply parallel operation system and control system thereof |
| CN113541187B (en) * | 2021-07-13 | 2022-09-02 | 湖南普莱思迈电子科技有限公司 | Intermediate frequency sine wave alternating current power supply parallel operation system and control system thereof |
| CN113885390A (en) * | 2021-10-15 | 2022-01-04 | 湖南恩智绿源电子技术有限公司 | Method for ensuring current control precision after parallel connection of power supplies by adopting digital-analog mixing |
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