CN105529815A - Single cell set online UPS circuit and control method thereof - Google Patents
Single cell set online UPS circuit and control method thereof Download PDFInfo
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- CN105529815A CN105529815A CN201410513933.0A CN201410513933A CN105529815A CN 105529815 A CN105529815 A CN 105529815A CN 201410513933 A CN201410513933 A CN 201410513933A CN 105529815 A CN105529815 A CN 105529815A
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Abstract
The invention provides a single cell set online UPS (uninterrupted power source) circuit and a control method thereof. According to the UPS circuit, only a second switch device and a sixth switch device are added when a single cell set is connected, one end of the second switch device is connected between a first switch device and a third switch device, the other end of the second switch device is connected with one end of a BAT, one end of the sixth switch device is connected between a fifth switch device and a second capacitor, the other end of the sixth switch device is connected with a negative end of the BAT, or one end of the sixth switch device is connected between a fourth switch device and a first capacitor, and the other end of the sixth switch device is connected with a positive end of the BAT. Through the circuit, energy is provided for double buses in a cell mode, parallel operation of the single cell set is realized, and electromagnetic interference is effectively inhibited with the smallest hardware resource consumption.
Description
Technical field
The present invention relates to power circuit technical field, particularly relate to a kind of monocell group on-line uninterruption power supply UPS circuit and control method thereof.
Background technology
Pursuit low cost, high efficiency, high power density, high reliability are the targets that uninterrupted power supply UPS designs always.Single inductance non-bridge PFC power circuit has advantage in cost, inductance utilance, efficiency and high power density.But in single-phase ups system, mount monocell group in without bridge Vienna-like structure more difficult.
As shown in Figure 1, when being powered by AC when not mounting monocell group in without bridge Vienna-like structure, K switch 1 is connected AC power AC, K switch 2 disconnects, and at the positive half cycle of AC, Q1, Q3 are in conducting state, then current direction is that the n-L1-Q1-Q3-AC of AC bears, and is inductance L 1 energy storage; After thermal energy storage process terminates, turn off Q1, then current direction is that the n-L1-D1-C1-AC of AC bears, and is embodied as positive bus-bar (BUS+ and zero line N) energy storage; At the negative half period of AC, Q3, Q1 are in conducting state, then current direction is that the n-Q3-Q1-L1-AC of AC bears, and is inductance L 1 energy storage; After thermal energy storage process terminates, turn off Q3, then current direction is that the n-C2-D2-L1-AC of AC bears, and is embodied as negative busbar (BUS+ and zero line N) energy storage.
At present mount monocell group in without bridge Vienna-like structure and have two kinds of modes, a kind of mode is by Vienna-like structure and BUCK-BOOST electrical combination, and another kind of mode is the Vienna-like circuit of employing two cover without bridge.
Be illustrated in figure 1 the mode by Vienna-like structure and BUCK-BOOST electrical combination, on original circuit structure, namely add the circuit be made up of monocell group BAT, switching tube Q2, diode D3 and inductance L 2.K1 and battery pack BAT is connected and closing switch K2 time, on-off switching tube Q2, Q1, Q3 conducting, current direction be the n-L1-Q1-Q3-BAT of BAT bear, realize inductance L 1 energy storage; After energy storage terminates, turn off Q1, then current direction is that the n-L1-D1-C1-BAT of BAT bears, and is embodied as positive bus-bar energy storage; Turn off Q1 afterwards, drive Q2 conducting, then current direction is that the n-Q2-L2-BAT of BAT bears, and is embodied as inductance L 2 energy storage; Energy storage terminates rear shutoff Q2, and current direction is that the n-C2-D3-L2 of L2 bears, and is embodied as negative busbar energy storage.
Be illustrated in figure 2 employing two cover without the Vienna-like circuit of bridge, namely add on original circuit structure by monocell group BAT, switching tube Q2, switching tube Q5, diode D3, diode D4, the circuit of diode D3, diode D3 ' and inductance L 2 composition.When being powered by monocell group BAT, K1, K2 and monocell group BAT are connected, Q1, Q3, Q2, Q5 conducting, current direction is that the n-L1-Q1-Q3-Q5-Q2-L2-BAT of BAT bears, and realizes inductance L 1 and inductance L 2 energy storage; After energy storage terminates, turn off Q1, then current direction is that the n-L1-D1-C1-Q5-Q2-L2-BAT of BAT bears, and is embodied as positive bus-bar energy storage; Turn off Q5 afterwards, make Q1, Q3 conducting, then current direction is that the n-L1-Q1-Q3-C2-D4-L2-BAT of BAT bears, and is embodied as negative busbar energy storage.
For the first monocell group mounting mode, although can realize parallel operation to share monocell group, BUCK_BOOST adds the cost of system, and power density is difficult to accomplish optimum, for the second monocell group mounting mode, the a set of pfc circuit of increase is adopted to complete the mounting of monocell group, this topology has very large advantage in binary system, because PFC and DC/DC is completely shared, PFC with DC/DC Capacity design is relatively consistent, but this topological single-phase civil power input, single-phase civil power is split two-phase, the capacity of civil power design only has the half of battery DC/DC design capacity just can meet the demands, but in order to share completely, the capacity on each road must be designed into the requirement of battery capacity, and battery pack cannot be realized share, battery mode electromagnetic interference problem is larger, the design difficulty of cost and power density realizes optimal design.
Summary of the invention
The embodiment of the present invention provides a kind of monocell group on-line uninterruption power supply UPS circuit and control method thereof, both reduces hardware resource consumption, and effectively can suppress electromagnetic interference again.
The invention provides a kind of monocell group on-line uninterruption power supply UPS circuit, comprise AC power AC, monocell group BAT, K switch 1, inductance, the first switching device, the 3rd switching device, the 4th switching device, the 5th switching device, the first electric capacity and the second electric capacity, described K switch 1 one end is connected with inductance, and the other end is connected with AC one end or is connected with BAT one end; When described K switch 1 other end is connected with AC one end, described AC, K switch 1, inductance, the first switching device and the 3rd switching device are connected formation first loop successively; Described 4th switching device and the first electric capacity are connected formation first branch road successively, first switching device and the 3rd switching device are connected formation second branch road successively, 5th switching device and the second electric capacity are connected formation the 3rd branch road successively, described first branch road, the second branch road are connected with the 3rd branch circuit parallel connection, wherein, 4th switching device, the first switching device, the 5th switching device are positioned at same tie point and are connected with one end of inductance, and the first electric capacity, the 3rd switching device, the second electric capacity are positioned at same tie point and are connected with one end of AC; This UPS circuit also comprises:
Second switch device and the 6th switching device, wherein:
Described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT negative terminal, and the 6th switching device one end is connected between the 5th switching device and the second electric capacity, and the other end is connected with BAT negative terminal;
Or described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, and the other end is connected with BAT anode.
Preferably, the described second switch device other end is connected with BAT negative terminal, 6th switching device one end is connected between the 5th switching device and the second electric capacity, the other end is connected with BAT negative terminal, when then described K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 4th switching device is the first capacitor charging, within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging,
Or
The described second switch device other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, the other end is connected with BAT anode, when then described K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 6th switching device, 3rd switching device is the first capacitor charging, within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 5th switching device is the second capacitor charging.
Preferably, the two ends of described 6th switching device are also connected in parallel to electric capacity.
Preferably, the first switching device, the 3rd switching device are the circuit realizing rectification and high frequency chopping function, and described second switch device is the HF switch pipe being controlled copped wave by external drive.
Preferably, described first switching device, the 3rd switching device are the insulated gate bipolar transistor IGBT of diode in belt body, or are metal oxide semiconductor field effect tube MOSFET, or are the combination of following any number of device:
IGBT, MOSFET, diode.
Preferably, described 4th switching device, the 5th switching device and the 6th switching device are diode, or for comprising the switching tube of diode.
The present invention also provides a kind of monocell group on-line uninterruption power supply UPS circuit, comprise a monocell group BAT and at least two uninterrupted power supply UPS module, each UPS module comprises: AC power AC, K switch 1, inductance, the first switching device, the 3rd switching device, the 4th switching device, the 5th switching device, the first electric capacity and the second electric capacity, wherein, for each UPS module: described K switch 1 one end is connected with inductance, the other end is with one end of AC or be connected with one end of BAT, when described K switch 1 other end is connected with AC one end, described AC, switch, inductance, the first switching device and the 3rd switching device are connected formation first loop successively, described 4th switching device and the first electric capacity are connected formation first branch road successively, described first switching device and the 3rd switching device are connected formation second branch road successively, described 5th switching device and the second electric capacity are connected formation the 3rd branch road successively, described first branch road, second branch road is connected with the 3rd branch circuit parallel connection, wherein, 4th switching device, first switching device, 5th switching device is positioned at same tie point and is connected with one end of inductance, first electric capacity, 3rd switching device, second electric capacity is positioned at same tie point and is connected with one end of AC, it is characterized in that, for each UPS module, also comprise:
Second switch device and the 6th switching device, wherein:
Described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT negative terminal, and the 6th switching device one end is connected between the 5th switching device and the second electric capacity, and the other end is connected with BAT negative terminal;
Or described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, and the other end is connected with BAT anode.
Preferably, the described second switch device other end is connected with BAT negative terminal, 6th switching device one end is connected between the 5th switching device and the second electric capacity, the other end is connected with BAT negative terminal, when then described K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 4th switching device is the first capacitor charging, within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging,
Or
The described second switch device other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, the other end is connected with BAT anode, when then described K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 6th switching device, 3rd switching device is the first capacitor charging, within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 5th switching device is the second capacitor charging.
The present invention also provides a kind of control method based on above-mentioned UPS circuit, comprising:
K switch 1 is connected with inductance and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging;
Or
K switch 1 is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 6th switching device, the 3rd switching device are the first capacitor charging;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
The present invention also provides a kind of control method of above-mentioned UPS circuit, for each UPS module, adopts and powers with the following method:
K switch 1 is connected with inductance and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging;
Or
K switch 1 is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
Utilize monocell group on-line uninterruption power supply UPS circuit provided by the invention and control method thereof, there is following beneficial effect: achieve battery mode and provide energy to double-bus, achieve the parallel operation of monocell group, with very little hardware resource consumption, effectively suppress electromagnetic interference.
Accompanying drawing explanation
Fig. 1 is the circuit diagram by Vienna-like structure and BUCK-BOOST electrical combination;
Fig. 2 is the circuit diagram that employing two overlaps without the Vienna-like of bridge;
The online UPS circuit structure diagram of a kind of monocell group that Fig. 3 A provides for the embodiment of the present invention;
The online UPS circuit structure diagram of another kind of monocell group that Fig. 3 B provides for the embodiment of the present invention;
Fig. 4 A is for adopting the first monocell online UPS circuit alternating current to be positive bus-bar accumulator schematic diagram;
Fig. 4 B is for adopting the first monocell online UPS circuit alternating current to be negative busbar accumulator schematic diagram;
Fig. 4 C is for adopting the first monocell online UPS circuit monocell group to be positive bus-bar accumulator schematic diagram;
Fig. 4 D is for adopting the first monocell online UPS circuit monocell group to be negative busbar accumulator schematic diagram;
Fig. 4 E is for adopting the second monocell online UPS circuit monocell group to be positive bus-bar accumulator schematic diagram;
Fig. 5 A is the online UPS circuit structure diagram of a kind of monocell group realizing parallel operation CB common battery group;
Fig. 5 B is the online UPS circuit structure diagram of another kind of monocell group realizing parallel operation CB common battery group.
Embodiment
Below in conjunction with drawings and Examples, monocell group on-line uninterruption power supply UPS circuit provided by the invention and control method thereof are illustrated in greater detail.
Mount without bridge Vienna-like circuit battery difficulty to overcome single-phase civil power monocell group above, high cost problem, low power density problem, high electromagnetic interference problem, the embodiment of the present invention provides a kind of monocell group online UPS circuit, as shown in Fig. 3 A, Fig. 3 B, comprise AC power AC, monocell group BAT, K switch 1, inductance L 1, first switching device Q1, the 3rd switching device Q3, the 4th switching device D1, the 5th switching device D2, the first electric capacity C1 and the second electric capacity C2, concrete annexation is:
K switch 1 one end is connected with inductance L 1, and the other end is connected with AC one end or is connected with BAT one end; When K switch 1 other end is connected with AC one end, AC, K switch 1, inductance, the first switching device Q1 and the 3rd switching device Q3 connect formation first loop successively; 4th switching device D1 and the first electric capacity C1 connects formation first branch road successively, first switching device Q1 and the 3rd switching device Q3 connects formation second branch road successively, 5th switching device D2 and the second electric capacity C2 connects formation the 3rd branch road successively, and the first branch road, the second branch road are connected with the 3rd branch circuit parallel connection.
In the embodiment of the present invention, this UPS circuit also comprises:
Second switch device Q2 and the 6th switching device D3, concrete annexation is:
As shown in Figure 3A, second switch device Q2 one end is connected between the first switching device Q1 and the 3rd switching device Q3, the other end is connected with BAT negative terminal, and the 6th switching device D3 one end is connected between the 5th switching device D2 and the second electric capacity C2, and the other end is connected with BAT negative terminal.
The embodiment of the present invention, by adding second switch device Q2 and the 6th switching device D3 of above-mentioned annexation, can realize adopting monocell group to be that positive bus-bar and negative busbar are powered by corresponding control circui.
Preferably, can adopt following control mode: when K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device Q1 and second switch device Q2 conducting are inductance L 1 energy storage, and other each switching device can be the state turned off; After energy storage terminates, turn off the first switching device Q1, second switch device Q2 is still conducting state, and conducting the 3rd switching device Q3, the 4th switching device D1 are that the first electric capacity C1 charges, and other each switching device can be the state turned off; Within the negative half period cycle, conducting first switching device Q1 and second switch device Q2 is inductance L 1 energy storage, and other each switching device can be the state turned off; After energy storage terminates, turn off second switch device Q2, the first switching device Q1 is still conducting state, and conducting the 3rd switching device Q3, the 6th switching device D3 are that the second electric capacity C2 charges, and other each switching device can be the state turned off.
Or, as shown in Figure 3 B, second switch device Q2 and the 6th switching device D3, concrete annexation is:
Second switch device Q2 one end is connected between the first switching device Q1 and the 3rd switching device Q3, and the other end is connected with BAT anode, and the 6th switching device D3 one end is connected between the 4th switching device D1 and the first electric capacity C1, and the other end is connected with BAT anode.
The embodiment of the present invention, by adding second switch device Q2 and the 6th switching device D3 of above-mentioned annexation, can realize adopting monocell group to be that positive bus-bar and negative busbar are powered by corresponding control circui.
Preferably, can adopt following control mode: when K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device Q2 and the first switching device Q1 conducting are inductance L 1 energy storage, and other each switching device can be the state turned off; After energy storage terminates, turn off second switch device Q2, the first switching device Q1 is still conducting state, and conducting the 6th switching device D3, the 3rd switching device Q3 are that the first electric capacity C1 charges, and other each switching device can be the state turned off; Within the negative half period cycle, conducting second switch device Q2 and the first switching device Q1 is inductance L 1 energy storage, and other each switching device can be the state turned off; After energy storage terminates, turn off the first switching device Q1, second switch device Q2 is still conducting state, and conducting the 3rd switching device Q3, the 5th switching device D2 are that the second electric capacity C2 charges.
In Fig. 3 A, Fig. 3 B, the junction of positive and negative busbar is N line, the i.e. neutral point of AC power, this neutral point is the negative terminal of positive bus-bar, for the anode of negative busbar, the first electric capacity C1 is connected in positive bus-bar, the anode of the corresponding positive bus-bar in two ends of the first electric capacity C1 and negative terminal, second electric capacity C2 is connected in negative busbar, the anode of the corresponding negative busbar in two ends of the second electric capacity C2 and negative terminal.
Preferably, in the embodiment of the present invention, the first switching device, the 3rd switching device are the circuit realizing rectification and high frequency chopping function, and this circuit has shutoff and conducting two states, and the present invention is not construed as limiting concrete circuit form.
Preferably, the first switching device, the 3rd switching device can be, but not limited to be the circuit realizing rectification and high frequency chopping function of following form:
Insulated gate bipolar transistor IGBT; Or
Metal oxide semiconductor field effect tube MOSFET; Or
The combination of following any number of device: IGBT (comprising IGBT and the not IGBT of diode in belt body of diode in belt body), MOSFET, diode.
Preferably, the second switch device in the embodiment of the present invention is the HF switch pipe being controlled copped wave by external drive.
Carry out power supply the principle to the online UPS circuit of the present invention's above-mentioned monocell group to be below described.
For the UPS circuit shown in Fig. 3 A, in the online UPS circuit of monocell group in the embodiment of the present invention, when one end of inductance L 1 is connected with the anode of BAT by K switch 1, BAT, inductance L 1, first switching device Q1 and second switch device Q2 form tank circuit, the energy storage to energy-storage travelling wave tube L1 can be realized, BAT, inductance L 1, the 4th switching device D1, the first electric capacity C1, the 3rd switching device Q3, second switch device Q2 form continuous current circuit, are positive bus-bar energy storage; BAT, energy-storage travelling wave tube L1, the first switching device Q1, the 3rd switching device Q3, the second electric capacity C2 and the 6th switching device D3 form continuous current circuit, are negative busbar energy storage.
Particularly, in order to realize above-mentioned energy storage and afterflow process, in just half cycle, need to drive the first switching device Q1 and second switch device Q2 conducting by external drive signal, therefore current direction is that the n-L1-Q1-Q2-BAT of BAT bears, and is embodied as energy-storage travelling wave tube L1 energy storage; After energy storage terminates, turn off the first switching device Q1 by external drive signal and conducting the 3rd switching device Q3, the 4th switching device D1 to be switched on be that the first electric capacity C1 charges, therefore current direction is that the n-L1-D1-C1-Q3-Q2-BAT of BAT bears.Within the negative half period cycle, the first switching device Q1 and second switch device Q2 conducting is driven to be inductive energy storage by external drive signal, after energy storage terminates, second switch device Q2 is turned off by external drive signal, it is that the second electric capacity C2 charges that 3rd switching device Q3 and the 6th switching device D3 is switched on, and therefore current direction is that the n-L1-Q1-Q3-C2-D3-BAT of BAT bears.
For the UPS circuit shown in Fig. 3 B, in the online UPS circuit of monocell group in the embodiment of the present invention, when one end of inductance L 1 is connected with the negative terminal of BAT by K switch 1, BAT, second switch device Q2, the first switching device Q1, inductance L 1 form tank circuit, the energy storage to energy-storage travelling wave tube L1 can be realized, BAT, second switch device Q2, the 3rd switching device Q3, the first electric capacity C2, the 5th switching device D2, inductance L 1 form continuous current circuit, are negative busbar energy storage; BAT, the 6th switching device D3, the first electric capacity C1, the 3rd switching device Q3, the first switching device Q1, energy-storage travelling wave tube L1 form continuous current circuit, are positive bus-bar energy storage.
Particularly, in order to realize above-mentioned energy storage and afterflow process, in just half cycle, need to drive second switch device Q2 and the first switching device Q1 conducting by external drive signal, therefore current direction is that the n-Q2-Q1-L1-BAT of BAT bears, be embodied as energy-storage travelling wave tube L1 energy storage, after energy storage terminates, turning off second switch device Q2 with conducting the 6th switching device D3, the 3rd switching device Q3 by external drive signal is that the first electric capacity C1 charges, and therefore current direction is that the n-D3-C1-Q3-Q1-L1-BAT of BAT bears.Within the negative half period cycle, second switch device Q2 and the first switching device Q1 conducting is driven by external drive signal, therefore current direction is that the n-Q2-Q1-L1-BAT of BAT bears, be embodied as energy-storage travelling wave tube L1 energy storage, after energy storage terminates, turn off the first switching device Q1 by external drive signal and conducting the 3rd switching device Q3, the 5th switching device D2 to be switched on be that the second electric capacity C2 charges, therefore current direction is that the n-Q2-Q3-C2-D2-L1-BAT of BAT bears.
Preferably, the two ends of the 6th switching device D3 are also connected in parallel to electric capacity.
Preferably, the first switching device Q1, second switch device Q2 and the 3rd switching device Q3 are the switching tube be connected with external drive signal.First switching device Q1, second switch device Q2 and the 3rd switching device Q3 are connected in UPS circuit, and the closure of diode is concrete as shown in Figure 3 A and Figure 3 B, is not described in detail here.
D3 adopts slow recovery diode, and shunt capacitance can change the ratio of Q3 and D3 equivalent capacity, or D3 adopts switching tube, and the normal open when the energy storage of battery mode negative busbar, so just can effectively suppress EMI problem.
Preferably, the 4th switching device D1, the 5th switching device D2 and the 6th switching device D3 are diode, or for comprising the switching tube of diode.The closure of diode is concrete as shown in Figure 3 A and Figure 3 B, is not described in detail here.
The online UPS circuit of monocell group provided by the invention, owing to increase only a switching device (the 6th switching device D3) and a switching device (the 3rd switching device Q3), switching device Q3, its one end is connected across in the middle of Q1, Q2, one end just (or the battery eliminator after conducting is born) is connecting the negative or battery of battery, the D3 increased, as power tube, realizes the afterflow of negative busbar or positive bus-bar.The present invention low cost can realize battery mounting and effectively suppresses electromagnetic interference, has very strong practical value.
The embodiment of the present invention also provides a kind of control method based on the first UPS circuit above-mentioned, comprising:
K switch 1 is connected with inductance L 1 and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging.
Preferably, the method also comprises:
By K switch 1, one end with civil power AC, one end of inductance L 1 is connected;
In just half cycle, conducting first switching device Q1 and the 3rd switching device Q3, for inductance L 1 carries out energy storage;
After energy storage terminates, by turning off the first switching device Q1, conducting the 4th switching device D1 is that the first electric capacity C1 charges, and is embodied as positive bus-bar energy storage;
Within the negative half period cycle, conducting the 3rd switching device Q3 and the first switching device Q1, for inductance L 1 carries out energy storage;
After energy storage terminates, turn off the 3rd switching device Q3, conducting the 5th switching device D2 is that the first electric capacity C2 charges, and is embodied as negative busbar energy storage.
The embodiment of the present invention also provides a kind of control method based on above-mentioned the second UPS circuit, comprising:
K switch 1 is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 6th switching device, the 3rd switching device are the first capacitor charging;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
Preferably, the method also comprises:
By K switch 1, one end with civil power AC, one end of inductance L 1 is connected;
In just half cycle, conducting first switching device Q1 and the 3rd switching device Q3, for inductance L 1 carries out energy storage;
After energy storage terminates, turn off the first switching device Q1, conducting the 4th switching device D1 is that the first electric capacity C1 charges, and is embodied as positive bus-bar energy storage;
Within the negative half period cycle, conducting the 3rd switching device Q3 and the first switching device Q1, for inductance L 1 carries out energy storage;
After energy storage terminates, turn off the 3rd switching device Q3, conducting the 5th switching device D2 is that the first electric capacity C2 charges, and is embodied as negative busbar energy storage.
The online UPS circuit topology of the monocell group that the embodiment of the present invention provides has two input sources, i.e. alternating current source AC and stand-by power supply BAT.K switch 1 switches can make the access of alternating current source AC or stand-by power supply BAT, and after K switch 1 and be power inverter between positive and negative busbar, power inverter can complete the energy storage to positive and negative busbar.
Below in conjunction with accompanying drawing 4A ~ Fig. 4 E, alternating current source AC or stand-by power supply BAT power supply process are described.
As shown in Figure 4 A, be input as AC power AC, K1 is connected with civil power AC rectification rear class, and L1, Q1, Q3, D1, C1 form the BOOST circuit of positive bus-bar.Civil power is just in half cycle, AC, L1, Q1, Q3 form tank circuit (solid line marks part), current direction is that the n-L1-Q1-Q3-AC of AC bears, for inductance L 1 energy storage, AC, L1, D1, C1 form the first continuous current circuit (dotted line marks part), current direction is that the n-L1-D1-C1-AC of AC bears, and be negative busbar energy storage, Q2 does not participate in its loop.
As shown in Figure 4 B, be input as AC power AC, K1 is connected with civil power AC rectification rear class, and L1, Q1, Q3, D2, C2 form the BOOST circuit of negative busbar.In the civil power negative half period cycle, AC, Q3, Q1, L1 form tank circuit (solid line marks part), current direction is that the n-Q3-Q1-L1-AC of AC bears, for inductance L 1 energy storage, AC, C1, D2, L1 form the second continuous current circuit (dotted line marks part), current direction is that the n-L1-D1-C1-AC of AC bears, and be negative busbar energy storage, Q2 does not participate in its loop.
As shown in Figure 4 C, for the circuit shown in Fig. 3 A, be input as DC power supply BAT, be switched to battery operated mode, when giving positive bus-bar energy storage, BAT, L1, D1, C1, Q1, Q2, Q3 form the BOOST circuit of positive bus-bar.BAT, L1, Q1, Q2 form tank circuit (solid line marks part), current direction is that the n-L1-Q1-Q2-BAT of BAT bears, for inductance L 1 energy storage, BAT, L1, D1, C1, Q3, Q2 form the 3rd continuous current circuit (dotted line marks part), current direction is that the n-L1-D1-C1-Q3-Q2-BAT of BAT bears, and is positive bus-bar energy storage.Q2, Q3 are in normally on, and Q1 is high frequency chopping when afterflow.
As shown in Figure 4 D, for the circuit shown in Fig. 3 A, be input as DC power supply BAT, be switched to battery operated mode, when giving negative busbar energy storage, BAT, L1, Q1, Q2, Q3, C2, D3 form the BOOST circuit of negative busbar.BAT, L1, Q1, Q2 form tank circuit (solid line marks part), current direction is that the n-L1-Q1-Q2-BAT of BAT bears, for inductance L 1 energy storage, BAT, L1, Q1, Q3, C2, D3 form the 4th continuous current circuit (dotted line marks part), current direction is that the n-L1-Q1-Q3-C2-D3-BAT of BAT bears, and is negative busbar energy storage.Q1, Q3 are in normally on, and Q2 is high frequency chopping when afterflow.
As shown in Figure 4 E, for the circuit shown in Fig. 3 B, be input as DC power supply BAT, be switched to battery operated mode, when giving negative busbar energy storage, BAT, L1, Q1, Q2, Q3, D3, C1 form the BOOST circuit of positive bus-bar.BAT, L1, Q1, Q2 form tank circuit (solid line marks part), current direction is that the n-L1-Q1-Q2-BAT of BAT bears, for inductance L 1 energy storage, BAT, D3, C1, Q3, Q1, L1 form the 5th continuous current circuit (dotted line marks part), current direction is that the n-D3-C1-Q3-Q1-L1-BAT of BAT bears, for positive bus-bar energy storage, BAT, Q2, Q3, C2, D2, L1 form the 6th continuous current circuit (dotted line marks part), current direction is that the n-Q2-Q3-C2-D2-L1-BAT of BAT bears, and is negative busbar energy storage.
The mode of the mounting monocell group that the embodiment of the present invention provides can also be applied to INV circuit.
A kind of monocell group of the present invention on-line uninterruption power supply UPS circuit, parallel operation CB common battery group problem can be solved, as shown in figure sa or figure, this circuit comprises a monocell group BAT and at least two uninterrupted power supply UPS module, and each UPS module comprises: AC power AC, K switch 1, inductance L 1, first switching device Q1, the 3rd switching device Q3, the 4th switching device D1, the 5th switching device D2, the first electric capacity C1 and the second electric capacity C2.
Wherein, for each UPS module: K switch 1 one end is connected with inductance L 1, the other end is with one end of AC or be connected with one end of BAT; When K switch 1 other end is connected with AC, AC, K switch 1, inductance L 1, first switching device Q1 and the 3rd switching device Q3 connect formation first loop successively; 4th switching device D1 and the first electric capacity C1 connects formation first branch road successively, first switching device Q1 and the 3rd switching device Q3 connects formation second branch road successively, 5th switching device D2 and the second electric capacity C2 connects formation the 3rd branch road successively, and the first branch road, the second branch road are connected with the 3rd branch circuit parallel connection.
For each UPS module, second switch device Q2 and the 6th switching device D3.
As shown in Figure 5A, second switch device Q2 and the 6th switching device D3 is connected to the mode of UPS circuit and can is:
Second switch device Q2 one end is connected between the first switching device Q1 and the 3rd switching device Q3, and the other end is connected with BAT negative terminal, and the 6th switching device D3 one end is connected between the 5th switching device D2 and the second electric capacity C2, and the other end is connected with BAT negative terminal.
The embodiment of the present invention is by adding second switch device Q2 and the 6th switching device D3 of above-mentioned annexation, and can realize parallel operation CB common battery group by corresponding control circui is that positive bus-bar and negative busbar are powered.
Preferably, following control mode can be adopted:
When K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device Q1 and second switch device Q2 is inductance L 1 energy storage, after energy storage terminates, turn off the first switching device Q1 and conducting the 3rd switching device Q3, the 4th switching device D1 are the first electric capacity C1 charges, within the negative half period cycle, conducting first switching device Q1 and second switch device Q2 conducting are inductance L 1 energy storage, after energy storage terminates, turn off second switch device Q2, conducting the 3rd switching device Q3 and the 6th switching device D3 is that the second electric capacity C2 charges.
Or as shown in Figure 5 B, the mode that second switch device Q2 and the 6th switching device D3 is connected to UPS circuit can also be:
Second switch device Q2 one end is connected between the first switching device Q1 and the 3rd switching device Q3, and the other end is connected with BAT anode, and the 6th switching device D3 one end is connected between the 4th switching device D1 and the first electric capacity C1, and the other end is connected with BAT anode.
The embodiment of the present invention is by adding second switch device Q2 and the 6th switching device D3 of above-mentioned annexation, and can realize parallel operation CB common battery group by corresponding control circui is that positive bus-bar and negative busbar are powered.
Preferably, following control mode can be adopted: when K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device Q2 and the first switching device Q1 is inductance L 1 energy storage, after energy storage terminates, turn off second switch device Q2, conducting the 6th switching device D3, 3rd switching device Q3 is that the first electric capacity C1 charges, within the negative half period cycle, conducting second switch device Q2 and the first switching device Q1 is inductance L 1 energy storage, after energy storage terminates, turn off the first switching device Q1 and conducting the 3rd switching device Q3, 5th switching device D2 is that the second electric capacity C2 charges.
The embodiment of the present invention also provides a kind of control method based on foregoing circuit, for the circuit shown in Fig. 5 A, for each UPS module, adopts and powers with the following method:
Switch is connected with inductance and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging.
The embodiment of the present invention also provides a kind of control method based on foregoing circuit, for the circuit shown in Fig. 5 B, for each UPS module, adopts and powers with the following method:
Switch is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
The embodiment of the present invention achieves the problem of monocell group UPS battery parallel operation CB common battery group, and switching tube can control separately the inductive current of this UPS inside, can not cause circulation large between UPS, concussion, power tube current imbalance problem.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a monocell group on-line uninterruption power supply UPS circuit, comprise AC power AC, monocell group BAT, K switch 1, inductance, the first switching device, the 3rd switching device, the 4th switching device, the 5th switching device, the first electric capacity and the second electric capacity, described K switch 1 one end is connected with inductance, and the other end is connected with AC one end or is connected with BAT one end; When described K switch 1 other end is connected with AC one end, described AC, K switch 1, inductance, the first switching device and the 3rd switching device are connected formation first loop successively; Described 4th switching device and the first electric capacity are connected formation first branch road successively, first switching device and the 3rd switching device are connected formation second branch road successively, 5th switching device and the second electric capacity are connected formation the 3rd branch road successively, described first branch road, the second branch road are connected with the 3rd branch circuit parallel connection, wherein, 4th switching device, the first switching device, the 5th switching device are positioned at same tie point and are connected with one end of inductance, and the first electric capacity, the 3rd switching device, the second electric capacity are positioned at same tie point and are connected with one end of AC; It is characterized in that, also comprise:
Second switch device and the 6th switching device, wherein:
Described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT negative terminal, and the 6th switching device one end is connected between the 5th switching device and the second electric capacity, and the other end is connected with BAT negative terminal;
Or described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, and the other end is connected with BAT anode.
2. circuit as claimed in claim 1, is characterized in that,
The described second switch device other end is connected with BAT negative terminal, 6th switching device one end is connected between the 5th switching device and the second electric capacity, the other end is connected with BAT negative terminal, when then described K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 4th switching device is the first capacitor charging, within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging,
Or
The described second switch device other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, the other end is connected with BAT anode, when then described K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 6th switching device, 3rd switching device is the first capacitor charging, within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 5th switching device is the second capacitor charging.
3. circuit as claimed in claim 1, it is characterized in that, the two ends of described 6th switching device are also connected in parallel to electric capacity.
4. circuit as claimed in claim 1, it is characterized in that, the first switching device, the 3rd switching device are the circuit realizing rectification and high frequency chopping function, and described second switch device is the HF switch pipe being controlled copped wave by external drive.
5. circuit as claimed in claim 4, described first switching device, the 3rd switching device are the insulated gate bipolar transistor IGBT of diode in belt body, or are metal oxide semiconductor field effect tube MOSFET, or are the combination of following any number of device:
IGBT, MOSFET, diode.
6. circuit as claimed in claim 1, it is characterized in that, described 4th switching device, the 5th switching device and the 6th switching device are diode, or for comprising the switching tube of diode.
7. a monocell group on-line uninterruption power supply UPS circuit, comprise a monocell group BAT and at least two uninterrupted power supply UPS module, each UPS module comprises: AC power AC, K switch 1, inductance, the first switching device, the 3rd switching device, the 4th switching device, the 5th switching device, the first electric capacity and the second electric capacity, wherein, for each UPS module: described K switch 1 one end is connected with inductance, the other end is with one end of AC or be connected with one end of BAT, when described K switch 1 other end is connected with AC one end, described AC, switch, inductance, the first switching device and the 3rd switching device are connected formation first loop successively, described 4th switching device and the first electric capacity are connected formation first branch road successively, described first switching device and the 3rd switching device are connected formation second branch road successively, described 5th switching device and the second electric capacity are connected formation the 3rd branch road successively, described first branch road, second branch road is connected with the 3rd branch circuit parallel connection, wherein, 4th switching device, first switching device, 5th switching device is positioned at same tie point and is connected with one end of inductance, first electric capacity, 3rd switching device, second electric capacity is positioned at same tie point and is connected with one end of AC, it is characterized in that, for each UPS module, also comprise:
Second switch device and the 6th switching device, wherein:
Described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT negative terminal, and the 6th switching device one end is connected between the 5th switching device and the second electric capacity, and the other end is connected with BAT negative terminal;
Or described second switch device one end is connected between the first switching device and the 3rd switching device, and the other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, and the other end is connected with BAT anode.
8. circuit as claimed in claim 7, is characterized in that,
The described second switch device other end is connected with BAT negative terminal, 6th switching device one end is connected between the 5th switching device and the second electric capacity, the other end is connected with BAT negative terminal, when then described K switch 1 other end is connected with BAT anode, in just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 4th switching device is the first capacitor charging, within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging,
Or
The described second switch device other end is connected with BAT anode, described 6th switching device one end is connected between the 4th switching device and the first electric capacity, the other end is connected with BAT anode, when then described K switch 1 other end is connected with BAT negative terminal, in just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device, conducting the 6th switching device, 3rd switching device is the first capacitor charging, within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, 5th switching device is the second capacitor charging.
9. based on a control method for circuit described in claim 1, it is characterized in that, comprising:
K switch 1 is connected with inductance and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging;
Or
K switch 1 is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 6th switching device, the 3rd switching device are the first capacitor charging;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
10. based on a control method for circuit described in claim 6, it is characterized in that, for each UPS module, adopt and power with the following method:
K switch 1 is connected with inductance and BAT anode;
In just half cycle, conducting first switching device and second switch device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 4th switching device are the first capacitor charging;
Within the negative half period cycle, conducting first switching device and second switch device are inductive energy storage, and after energy storage terminates, turn off second switch device, conducting the 3rd switching device and the 6th switching device are the second capacitor charging;
Or
K switch 1 is connected with inductance and BAT negative terminal;
In just half cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off second switch device;
Within the negative half period cycle, conducting second switch device and the first switching device are inductive energy storage, after energy storage terminates, turn off the first switching device and conducting the 3rd switching device, the 5th switching device are the second capacitor charging.
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| CN201410513933.0A CN105529815A (en) | 2014-09-29 | 2014-09-29 | Single cell set online UPS circuit and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306508A (en) * | 2018-02-08 | 2018-07-20 | 亚瑞源科技（深圳）有限公司 | A kind of high booster type DC converting circuit with PFC |
| CN108462390A (en) * | 2017-02-17 | 2018-08-28 | 亚瑞源科技（深圳）有限公司 | The boost module of uninterrupted power system |
| EP4239837A1 (en) * | 2022-02-09 | 2023-09-06 | Lian Zheng Electronic (Shenzhen) Co., Ltd. | Power factor correction and dc-dc multiplexing converter and uninterruptible power supply including the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000358378A (en) * | 1999-06-10 | 2000-12-26 | Mitsubishi Electric Corp | Uninterruptible power supply equipment |
| CN2689566Y (en) * | 2004-02-10 | 2005-03-30 | 山特电子（深圳）有限公司 | Uninterruptible power supply with battery shared |
| CN101789690A (en) * | 2010-01-26 | 2010-07-28 | 山特电子（深圳）有限公司 | UPS preceding stage electric volt increase station |
| CN103828186A (en) * | 2011-07-28 | 2014-05-28 | 施耐德电气It公司 | Single-battery power topologies for online UPS systems |
-
2014
- 2014-09-29 CN CN201410513933.0A patent/CN105529815A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000358378A (en) * | 1999-06-10 | 2000-12-26 | Mitsubishi Electric Corp | Uninterruptible power supply equipment |
| CN2689566Y (en) * | 2004-02-10 | 2005-03-30 | 山特电子（深圳）有限公司 | Uninterruptible power supply with battery shared |
| CN101789690A (en) * | 2010-01-26 | 2010-07-28 | 山特电子（深圳）有限公司 | UPS preceding stage electric volt increase station |
| CN103828186A (en) * | 2011-07-28 | 2014-05-28 | 施耐德电气It公司 | Single-battery power topologies for online UPS systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462390A (en) * | 2017-02-17 | 2018-08-28 | 亚瑞源科技（深圳）有限公司 | The boost module of uninterrupted power system |
| CN108306508A (en) * | 2018-02-08 | 2018-07-20 | 亚瑞源科技（深圳）有限公司 | A kind of high booster type DC converting circuit with PFC |
| EP4239837A1 (en) * | 2022-02-09 | 2023-09-06 | Lian Zheng Electronic (Shenzhen) Co., Ltd. | Power factor correction and dc-dc multiplexing converter and uninterruptible power supply including the same |
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