CN203278632U - Uninterrupted power supply (UPS) - Google Patents
Uninterrupted power supply (UPS) Download PDFInfo
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- CN203278632U CN203278632U CN 201320235900 CN201320235900U CN203278632U CN 203278632 U CN203278632 U CN 203278632U CN 201320235900 CN201320235900 CN 201320235900 CN 201320235900 U CN201320235900 U CN 201320235900U CN 203278632 U CN203278632 U CN 203278632U
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Abstract
The utility model relates to a UPS which comprises a rectification circuit, an alternative converting circuit and an inversion converting circuit. The alternative converting circuit is coupled between the rectification circuit and the inversion converting circuit, and comprises a first converting circuit, a second converting circuit, a driving unit and a first capacitor. The first converting circuit includes a first switching unit, the second converting circuit includes a second switching unit, the first converting circuit is connected with the second converting circuit in parallel; the driving unit is coupled with the first and second converting circuits; the first capacitor is coupled with the first and second converting circuits; and the driving unit outputs a first signal and a second signal to respectively control the first switching unit and the second switching unit, so that the first capacitor establishes voltage to supply power for the inversion converting circuit. The UPS employs the alternative converting circuit, and the first and second switching units receive relatively low current, so that loss, ripper and electromagnetic interference of electrical elements are reduced.
Description
Technical field
The utility model relates to a kind of uninterruptible power supply provider, particularly a kind of high-power uninterruptible power supply provider.
Background technology
In recent years, the power supply development in science and technology is rapid, and continued power is to load incessantly for uninterruptible power supply provider, and when load needed increasing large power supply, needing provided than large power supply to load by uninterruptible power supply provider.
Yet if when uninterruptible power supply provider uses single inverter to realize, have following point, for example existing switch element can't bear larger electric current; Or uninterruptible power supply provider need have the larger power capacity of storage, and volume is large so that uninterruptible power supply provider becomes, weight is heavier, cost is higher and reliability is relatively poor; Or large electric current can cause the loss of the electric components such as switch element to become large, ripple to become large or produce the problem such as electromagnetic interference (EMI).
The utility model content
The utility model is to provide a kind of uninterruptible power supply provider, to address the above problem.
The utility model proposes a kind of uninterruptible power supply provider, comprise a rectification circuit, an alternating expression change-over circuit and an inversion change-over circuit.The alternating expression change-over circuit couples rectification circuit, and the alternating expression change-over circuit comprises one first change-over circuit, one second change-over circuit, a driver element and one first electric capacity.The first change-over circuit has one first switch element.The second change-over circuit has a second switch unit.Driver element couples the first change-over circuit and the second change-over circuit.The first electric capacity couples the first change-over circuit and the second change-over circuit.The inversion change-over circuit couples the alternating expression change-over circuit.Wherein, driver element output one first signal to be controlling the first switch element conducting or cut-off, and driver element output one secondary signal to be controlling second switch cell conduction or cut-off so that the first electric capacity set up voltage with power supply to the inversion change-over circuit.
In other words, the utility model discloses a kind of uninterruptible power supply provider, comprising:
One rectification circuit;
One alternating expression change-over circuit couples this rectification circuit, and this alternating expression change-over circuit comprises: one first change-over circuit has one first switch element; One second change-over circuit has a second switch unit; One driver element couples this first change-over circuit and this second change-over circuit;
One first electric capacity couples this first change-over circuit and this second change-over circuit; And
One inversion change-over circuit couples this alternating expression change-over circuit;
Wherein, this driver element output one first signal is to control this conducting of the first switch element or cut-off, and this driver element output one secondary signal is to control this second switch cell conduction or cut-off, so that this first electric capacity is set up voltage to power to this inversion change-over circuit.
In the utility model one embodiment, above-mentioned the first change-over circuit also comprises one first inductance and one first diode, and the first inductance couples the anode of rectification circuit, the first switch element and the first diode, and the negative electrode of the first diode couples the first electric capacity.
In the utility model one embodiment, above-mentioned the second change-over circuit also comprises one second inductance and one second diode, and the second inductance couples the anode of rectification circuit, second switch unit and the second diode, and the negative electrode of the second diode couples the first electric capacity.
In the utility model one embodiment, above-mentioned alternating expression change-over circuit also comprises one the 3rd diode, and the negative electrode of the 3rd diode couples the first switch element and second switch unit, and the anode of the 3rd diode couples the first electric capacity.
In the utility model one embodiment, above-mentioned rectification circuit couples civil power, and to the alternating expression change-over circuit, input current splits into one first electric current and one second electric current with rectification output one input current, the first electric current flows into the first change-over circuit, and the second electric current flows into the second change-over circuit.
In the utility model one embodiment, during above-mentioned the first switch element conducting, the first electric current first switch element of flowing through, during the first switch element cut-off, the first electric current flow to the first electric capacity, and during the second switch cell conduction, the second electric current flow through second switch unit, when the second switch unit ended, the second electric current flow to the first electric capacity.
In the utility model one embodiment, above-mentioned uninterruptible power supply provider also comprises one group of output switch, a lc circuit and a relay switch.This group output switch couples between inversion change-over circuit and a load, and this group output switch comprises one first output switch and one second output switch.Lc circuit couples between the first output switch, an output waterline end and an output ground terminal.Relay switch couples between an input waterline end and lc circuit.
In the utility model one embodiment, above-mentioned uninterruptible power supply provider also comprises one first electromagnetic interference filter circuit and one second electromagnetic interference filter circuit, the first electromagnetic interference filter circuit couples between rectification circuit, an input live wire end, input waterline end and an input ground terminal, and the second electromagnetic interference filter circuit couples between inversion change-over circuit, an output live wire end, output waterline end and output ground terminal.
In the utility model one embodiment, above-mentioned uninterruptible power supply provider also comprises a relay unit, is coupled between rectification circuit and the first electromagnetic interference filter circuit.
In the utility model one embodiment, above-mentioned uninterruptible power supply provider also comprises a phase place lock control circuit, couple relay switch, when the output phase of uninterruptible power supply provider is same as the input phase of civil power, the phase place lock control circuit is controlled the conducting of relay switch, so that input waterline end connects output waterline end by lc circuit.
Uninterruptible power supply provider of the present utility model is by the alternating expression change-over circuit, so that input current splits into first and second electric current, and first and second electric current difference energy storage is in first and second change-over circuit, or to the first capacitor charging, so that the first electric capacity is set up voltage to power to the inversion change-over circuit, and first and second switch element can receive less electric current, and the loss of the electric components such as first and second switch element diminishes, ripple diminishes or reduce electromagnetic interference (EMI) and less electric current makes.In addition, uninterruptible power supply provider also can become, and small volume, weight are light, cost is lower and reliability is higher, improves whereby the ease of use of uninterruptible power supply provider.
Above is give an example and explain principle of the present utility model about the explanation of the utility model content and the explanation of following execution mode, and provides the utility model protection range further to explain.
Description of drawings
Fig. 1 is the function block schematic diagram of the uninterruptible power supply provider of the utility model one embodiment;
Fig. 2 is the current waveform figure according to the uninterruptible power supply provider of another embodiment of the utility model of Fig. 1;
Fig. 3 is the function block schematic diagram of the uninterruptible power supply provider of another embodiment of the utility model;
Fig. 4 is the circuit diagram according to the uninterruptible power supply provider of another embodiment of the utility model of Fig. 3.
[main element description of reference numerals]
1,1a, 1b: uninterruptible power supply provider 16a, 16b:LC circuit
10,10a, 10b: rectification circuit LF3: inductance
12,12a, 12b: alternating expression change-over circuit C1: electric capacity
120,120a, 120b: driver element 18a, 18b: relay switch
121,121a, 121b: the first change-over circuit 19a: phase place lock control circuit
1211,1211a, 1211b: the first switch element S1: the first output switch
122,122a, 122b: the second change-over circuit S10: first shares end
1222,1222a, 1222b: 11: the first switch terminal of second switch cell S
124,124a, 124b: the first electric capacity S12: the second switch terminal
LF1: the first inductance S2: the second output switch
LF2: the second inductance S20: second shares end
D1: the first diode S21: the 3rd switch terminal
D2: the second diode S22: the 4th switch terminal
D3: the 3rd diode L1: input live wire end
14,14a, 14b: inversion change-over circuit L2: output live wire end
141b: the first switching circuit N1: input waterline end
142b: second switch circuit N2: output waterline end
143b: inductive circuit E1: input ground terminal
Q1: the first switch element E2: output ground terminal
Q2: second switch element 20a, 20b: the first electromagnetic interference filter circuit
Q3: the 3rd switch element 22a, 22b: the second electromagnetic interference filter circuit
Q4: the 4th switch element Iin: input current
Co: output capacitance I1: the first electric current
24a, 24b: relay unit I2: the second electric current
Is: resultant current
Embodiment
Fig. 1 is the function block schematic diagram of the uninterruptible power supply provider of the utility model one embodiment.See also Fig. 1, a kind of uninterruptible power supply provider 1 comprises a rectification circuit 10, an alternating expression change-over circuit 12 and an inversion change-over circuit 14.In practical operation, uninterruptible power supply provider 1 is for example the uninterruptible power supply provider of 6KVA to 10KVA, and the present embodiment does not limit kind and the form of uninterruptible power supply provider 1.The utility model receives civil power by rectification circuit 10, export an input current Iin to alternating expression change-over circuit 12 with rectification, and alternating expression change-over circuit 12 can be shunted input current Iin, to carry out the power division operation, therefore alternating expression change-over circuit 12 cpable of lowering power losses are to provide direct voltage to inversion change-over circuit 14.
Rectification circuit 10 couples between civil power and alternating expression change-over circuit 12, and rectification circuit 10 is for example a full bridge circuit.In practical operation, rectification circuit 10 is for example ac/dc power rectifier circuit or full-wave rectifying circuit, take will be for example as the waveform rectification of the civil power of AC power as can be for input power or the input current Iin of load, this input power or input current Iin are the pulsating direct current of all-wave, it should be noted that, rectification circuit 10 not as limit, can also be half-wave rectifying circuit.
Inversion change-over circuit 14 couples alternating expression change-over circuit 12.In practical operation, inversion change-over circuit 14 is for example converter (Inverter), in order to direct current is converted to standard and stable alternating current, and inversion change-over circuit 14 uses to load with output voltage by output switch (not illustrating), and the output voltage of inversion change-over circuit 14 is approximately identical to load voltage whereby.
Alternating expression change-over circuit 12 couples between rectification circuit 10 and inversion change-over circuit 14, and alternating expression change-over circuit 12 comprises one first change-over circuit 121, one second change-over circuit 122, a driver element 120 and one first electric capacity 124.In practical operation, alternating expression change-over circuit 12 is for example alternating expression capability correction change-over circuit, certainly, alternating expression change-over circuit 12 can be used as the correction of power factor, for example make power factor level off to 1, to improve the efficient of power transfer, those skilled in the art can optionally freely design.
The first change-over circuit 121 has one first switch element 1211, and that the second change-over circuit 122 has second switch unit 1222, the first change-over circuits 121 is in parallel with the second change-over circuit 122.In practical operation, first and second change-over circuit 121,122 is for example voltage up converting circuit (Boost Circuit), the present embodiment does not limit first and second change-over circuit 121,122 kind and form, wherein first and second switch element 1211,1222 is for example two-carrier junction transistor, power transistor or field-effect transistor, and the present embodiment does not limit first and second switch element 1211,1222 kind and form.
Another driver element 120 couples the first switch element 1211 and second switch unit 1222, and driver element 120 is in order to controlling first and second switch element 1211,1222 conducting and cut-off, and driver element 120 is for example realized to drive chip or switch chip.For example driver element 120 is the CS3845 chip, in order to conducting and the cut-off of controlling the first switch element 1211, or controls conducting and the cut-off of second switch unit 1222.The present embodiment does not limit kind and the form of driver element 120.
In addition, driver element 120 of the present utility model is coupled to first and second switch element 1211,1222 control end, control end is for example grid or base stage, driver element 120 drives first and second switch element 1211,1222 conducting or cut-off with isolated form whereby, and the present embodiment does not limit driver element 120 and drives first and second switch elements 1211,1222 kind and form.
The first electric capacity 124 couples between the first change-over circuit 121, the second change-over circuit 122 and inversion change-over circuit 14.In practical operation, the first electric capacity 124 is in order to store electrical energy, to provide direct voltage to inversion change-over circuit 14, for example the first or second change-over circuit 121,122 pairs of the first electric capacity 124 chargings, or 14 discharges of 124 pairs of inversion change-over circuits of the first electric capacity, the present embodiment does not limit kind and the form of the first electric capacity 124 charge or discharge.
specifically, rectification circuit 10 couples civil power, export an input current Iin to alternating expression change-over circuit 12 with rectification, input current Iin splits into one first electric current I 1 and one second electric current I 2, the first electric current I 1 flows into the first change-over circuit 121, the second electric current I 2 flows into the second change-over circuit 122, wherein driver element 120 output one first signals are to control the first switch element 1211 conductings or cut-off, and driver element 120 output one secondary signals are to control second switch unit 1222 conductings or cut-off, so that the first electric capacity 124 is set up voltage to power to inversion change-over circuit 14.
For instance, driver element 120 is controlled the first switch element 1211 conductings, the first electric current I 1 energy storage is in the first change-over circuit 121, driver element 120 is controlled the first switch element 1211 cut-offs, the first electric current I 1 first change-over circuit 121 of flowing through, so that the first electric capacity 124 is charged, in like manner as can be known, driver element 120 is controlled second switch unit 1222 conductings, the second electric current I 2 energy storage are in the second change-over circuit 122, driver element 120 is controlled second switch unit 1222 cut-offs, and the second electric current I 2 second change-over circuit 122 of flowing through is with to the first electric capacity 124 chargings.
It is worth mentioning that, first signal and secondary signal are the complementary locking signal of phase place.In practical operation, first signal is for example the phase angle according to input current Iin or the first electric current I 1, and make the first switch element 1211 produce the signal of conducting or cut-off, and secondary signal is for example also the phase angle according to input current Iin or the second electric current I 2, and make second switch unit 1222 produce the signal of conductings or cut-off, wherein first signal according to the phase angle of input current Iin be different from secondary signal according to the phase angle of input current Iin, first and second signal namely produces the signal that alternately changes of phase place complementation whereby.The present embodiment does not limit kind and the form of first signal and secondary signal.
for instance, when the phase angle of input current Iin is 0 or 180 when spending, driver element 120 is controlled the first switch element 1211 conductings, when the phase angle of input current Iin is 90 or 270 when spending, driver element 120 is controlled the first switch element 1211 cut-offs, when the phase angle of input current Iin is 45 or 225 when spending, driver element 120 is controlled second switch unit 1222 conductings, when the phase angle of input current Iin is 135 or 315 when spending, driver element 120 is controlled second switch unit 1222 cut-offs, driver element 120 output first or secondary signal are to control first or second switch unit 1211 whereby, 1222 conductings or cut-off, and first and second signal namely produces the signal that alternately changes of phase place complementation.
Hence one can see that, the utility model is by alternating expression change-over circuit 12, first and second change-over circuit 121,122 with parallel connection is shared Partial Power, reduce whereby first and second change-over circuit 121,122 power loss, for example reduce first and second switch element 1211,1222 electricity, thermal stress, improve whereby Systems balanth.In addition, the electric current that bear each unit in first and second change-over circuit 121,122 is little, so that the volume of magnetic element also reduces, and then reduces the volume and weight of uninterruptible power supply provider 1.
Fig. 2 is the current waveform figure according to the uninterruptible power supply provider 1 of another embodiment of the utility model of Fig. 1.See also Fig. 2 and Fig. 1, Fig. 2 represents the current waveform figure of first and second electric current I 1, I2, and first and second electric current I 1, I2 synthesize the oscillogram of resultant current Is.
for instance, when the phase angle of input current Iin is 0 when spending, driver element 120 is controlled the first switch element 1211 conductings, so that the first electric current I 1 energy storage is in the first change-over circuit 121, when the phase angle of input current Iin is 45 when spending, driver element 120 is controlled second switch unit 1222 conductings, so that the second electric current I 2 energy storage are in the second change-over circuit 122, when the phase angle of input current Iin is 90 when spending, driver element 120 is controlled the first switch element 1211 cut-offs, the first change-over circuit 121 so that the first electric current I 1 is flowed through, so that the first electric capacity 124 is charged, when the phase angle of input current Iin is 135 when spending, driver element 120 is controlled second switch unit 1222 cut-offs, the second change-over circuit 122 so that the second electric current I 2 is flowed through, so that the first electric capacity 124 is charged, the first electric capacity 124 is set up voltage to power to inversion change-over circuit 14 whereby.
in like manner as can be known, when the phase angle of input current Iin is 180 when spending, driver element 120 is controlled the first switch element 1211 conductings, so that the first electric current I 1 energy storage is in the first change-over circuit 121, when the phase angle of input current Iin is 225 when spending, driver element 120 is controlled second switch unit 1222 conductings, so that the second electric current I 2 energy storage are in the second change-over circuit 122, when the phase angle of input current Iin is 270 when spending, driver element 120 is controlled the first switch element 1211 cut-offs, the first change-over circuit 121 so that the first electric current I 1 is flowed through, so that the first electric capacity 124 is charged, when the phase angle of input current Iin is 315 when spending, driver element 120 is controlled second switch unit 1222 cut-offs, the second change-over circuit 122 so that the second electric current I 2 is flowed through, so that the first electric capacity 124 is charged, the first electric capacity 124 is set up voltage to power to inversion change-over circuit 14 whereby, first and second electric current I 1 wherein, I2 waveform and resultant current Is waveform are as shown in Figure 2.The present embodiment does not limit kind and the form of first, second electric current I 1, I2 and resultant current Is waveform.
By first, second electric current I 1, I2 and the resultant current Is of Fig. 2 as can be known, the ripple of resultant current Is reduces greatly and current waveform becomes continuously, wherein the average of the first electric current I 1 and the second electric current I 2 forms resultant current Is, and resultant current Is for example presents sine wave, therefore alternating expression change-over circuit 12 also can have higher power factor, and when first and second change-over circuit 121, when 122 current peak reference signal equates, alternating expression change-over circuit 12 also can be realized current-sharing automatically, so that the first electric current I 1 is approximately equal to the second electric current I 2.
In addition, first and second switch element 1211,1222 can receive less electric current, the loss of first and second switch element 1211, the electric components such as 1222 diminishes, ripple diminishes or reduce the problems such as electromagnetic interference (EMI) and less electric current can shine into, because the ripple of resultant current Is reduces, and ripple frequency is the twice of the frequency of switch element, reduce whereby the high-frequency harmonic content of electric current, simplified the design of electromagnetic interface filter.The volume of another uninterruptible power supply provider 1 can become less and can become light, cost of weight also can reduce, and reliability can improve, and improves whereby the ease of use of uninterruptible power supply provider 1.
Fig. 3 is the function block schematic diagram of the uninterruptible power supply provider of another embodiment of the utility model.See also Fig. 3.the uninterruptible power supply provider 1a of the present embodiment and previous embodiment, 1 is similar, for example uninterruptible power supply provider 1a also can pass through alternating expression change-over circuit 12a, so that first and second change-over circuit 121a, 122a store electrical energy or to the first electric capacity 124a charging, and then make the first electric capacity 124a set up power voltage supply to inversion change-over circuit 14a, yet, still there is difference between uninterruptible power supply provider 1a and 1, its difference is: uninterruptible power supply provider 1a also comprises one first electromagnetic interference filter circuit 20a, one second electromagnetic interference filter circuit 22a, one relay unit 24a, one group of output switch S1, S2, one lc circuit 16a and a relay switch 18a.
The first electromagnetic interference filter circuit 20a couples between alternating expression change-over circuit 12a, input live wire end L1, input waterline end N1 and an input ground terminal E1, and the second electromagnetic interference filter circuit 22a couples between inversion change-over circuit 14a, output live wire end L2, output waterline end N2 and output ground terminal E2.The present embodiment does not limit kind and the form of uninterruptible power supply provider 1a.
Specifically, electromagnetic interference filter circuit can suppress the electromagnetic noise (electromagnetic noise) of alternating voltage, therefore, the first electromagnetic interference filter circuit 20a is in order to use as the EMI Filtering that is for example the civil power of AC power, and the EMI Filtering that the second electromagnetic interference filter circuit 22a is for example the output voltage of alternating current in order to conduct uses, and the utility model satisfies the electromagnetic interference standard by first and second electromagnetic interference filter circuit 20a, 22a whereby.
Relay unit 24a is coupled between rectification circuit 10a and the first electromagnetic interference filter circuit 20a.In practical operation, relay unit 24a is for example electromagnetic type, induction type, electrodynamic type or electronic relay, and the present embodiment does not limit kind and the form of relay unit 24a.For instance, when the state of relay unit 24a is ON, relay unit 24a conducting so that rectification circuit 10a, alternating expression change-over circuit 12a, inversion change-over circuit 14a and load end circuit form the loop circuit state, whereby uninterruptible power supply provider 1a by mains-supplied to load.When the state of relay unit 24a is OFF, not conducting of relay unit 24a, so that rectification circuit 10a, alternating expression change-over circuit 12a, inversion change-over circuit 14a and load end circuit form off state, uninterruptible power supply provider 1a powers to load by battery module (not illustrating) whereby.
One group of output switch S1, S2 couple between inversion change-over circuit 14a and a load, and this group output switch S1, S2 comprise one first output switch S1 and one second output switch S2.in practical operation, the first output switch S1 has one first and shares end S10, one first switch terminal S11 and one second switch terminal S12, and the second output switch S2 has one second shared end S20, one the 3rd switch terminal S21 and one the 4th switch terminal S22, wherein, first shares end S10 couples output waterline end N2, second shares end S20 couples output live wire end L2, and the first switch terminal S11 and the 3rd switch terminal S21 couple bypass circulation (Bypass), and the second switch terminal S12 and the 4th switch terminal S22 couple inversion change-over circuit 14a, when uninterruptible power supply provider 1a forms overload phenomenon or fault, first and second output switch S1, S2 can couple bypass circulation, uninterruptible power supply provider 1a still can provide output voltage to load whereby, those skilled in the art can optionally freely design.
In addition, lc circuit 16a couples between an output waterline end N2, an output ground terminal E2 and the first output switch S1.In practical operation, lc circuit 16a comprises an inductance L F3 and a capacitor C 1, and inductance L F3 couples between relay switch 18a and capacitor C 1, and capacitor C 1 couples between output waterline end N2 and output ground terminal E2.Furthermore; capacitor C 1 and inductance L F3 are in order to filtering or filtering noise; for example when civil power cuts off the power supply; the voltage of battery module can be converted to the direct voltage that inversion change-over circuit 14a needs; be converted to alternating current to load by inversion change-over circuit 14a again; but capacitor C 1 store electrical energy in lc circuit 16a wherein, and use as the dummy load of civil power outage moment, load protected whereby.
Specifically, the utility model increases the design of lc circuit 16a, with the output waterline end N2 that reduces uninterruptible power supply provider 1a and the voltage level of exporting ground terminal E2, for example make output waterline end N2 and the voltage level of output ground terminal E2 reach the application requirements that meets load equipment, and the utility model need not adopt the design of isolating transformer, and can save the cost of isolating transformer and keep the overall efficiency of uninterruptible power supply provider 1a.
Relay switch 18a couples between input waterline end N1 and lc circuit 16a.Relay switch 18a is for example electromagnetic type, induction type, electrodynamic type or electronic relay, and the present embodiment does not limit kind and the form of relay switch 18a.In practical operation, whether relay switch 18a connects output waterline end N2 in order to control inputs waterline end N1, when relay switch 18a conducting, input waterline end N1 connects output waterline end N2 by lc circuit 16a, so that input waterline end N1 forms with output waterline end N2 the common waterline state that links together, input whereby waterline end N1, output waterline end N2 and export ground terminal E2 and keep certain electronegative potential, to meet the demand of application-specific equipment, in addition, the utility model also reduces the chance that the user gets an electric shock.
Phase place lock control circuit 19a couples relay switch 18a, when the output phase of uninterruptible power supply provider 1a is same as the input phase of civil power, phase place lock control circuit 19a is in order to control the conducting of relay switch 18a, so that input waterline end N1 connects output waterline end N2 by lc circuit 16a.In practical operation, phase place lock control circuit 19a is by locking (Phase lock) control technology of phase place, to control conducting or the cut-off of relay switch 18a, for example phase place lock control circuit 19a is according to the correctness detection lines (site wiring fault detector) of the distribution of civil power, to detect the input phase of civil power, make whereby the output phase of uninterruptible power supply provider 1a be same as the input phase of civil power.
It is worth mentioning that, in other embodiments, phase place lock control circuit 19a also can realize by hardware or control program, for example relay switch 18a and phase place lock control circuit 19a, can form the relay with phase place locking control program or hardware, and this relay according to input phase and output phase with conducting or cut-off, when input phase and output phase were same phase, this relay conducting was to carry out the phase place locking.The present embodiment does not limit kind and the form of phase place lock control circuit 19a.Except above-mentioned difference, those skilled in the art with reference to previous embodiment and above-mentioned difference after, should know by inference easily, therefore do not repeat them here.
Next, further illustrate thin section structure and its start of uninterruptible power supply provider.Fig. 4 is the circuit diagram according to the uninterruptible power supply provider of another embodiment of the utility model of Fig. 3.See also Fig. 4, the utility model alternating expression change-over circuit 12b also comprises one the 3rd diode D3, the negative electrode of the 3rd diode D3 couples the first switch element 1211b and second switch unit 1222b, the anode of the 3rd diode D3 couples the first electric capacity 124b, the direction that flows of the 3rd diode D3 Limited Current wherein, so that electric current flows to negative electrode from the anode of the 3rd diode D3, the 3rd diode D3 can be as the electrical isolation executive component in the unidirectional partition loop of alternating expression change-over circuit 12b and inversion change-over circuit 14b whereby.
Specifically, the first change-over circuit 121b also comprises one first inductance L F1 and one first diode D1, the first inductance L F1 couples the anode of rectification circuit 10b, the first switch element 1211b and the first diode D1, and the negative electrode of the first diode D1 couples the first electric capacity 124b.The second change-over circuit 122b also comprises one second inductance L F2 and one second diode D2, and the second inductance L F2 couples the anode of rectification circuit 10b, second switch unit 1222b and the second diode D2, and the negative electrode of the second diode D2 couples the first electric capacity 124b.
Specifically, when the first switch element 1211b conducting, and during second switch unit 1222b cut-off, the first electric current I 1 flow through the first inductance L F1 and the first switch element 1211b, the first electric current I 1 energy storage is in the first inductance L F1 whereby, the second electric current I 2 flow through the second inductance L F2 and the second diode D2, with to the first electric capacity 124b charging, the first electric capacity 124b sets up power voltage supply to inversion change-over circuit 14b whereby.
When the first switch element 1211b conducting, and during the 1222b conducting of second switch unit, first and second electric current I 1, I2 flow through respectively first and second inductance L F1, LF2 and first and second switch element 1211b, 1222b, first and second electric current I 1, the energy storage of I2 difference are in first and second inductance L F1, LF2, so that the first electric capacity 124b discharges to inversion change-over circuit 14b whereby.
When the first switch element 1211b cut-off, and during the 1222b conducting of second switch unit, the first electric current I 1 flow through the first inductance L F1 and the first diode D1, so that the first electric capacity 124a is charged, the first electric capacity 124a sets up power voltage supply to inversion change-over circuit 14b whereby, the second electric current I 2 flow through the second inductance L F2 and second switch unit 1222b, the second electric current I 2 energy storage are in the second inductance L F2 whereby.
When the first switch element 1211b cut-off, and during second switch unit 1222b cut-off, first and second electric current I 1, I2 flow through respectively first and second inductance L F1, LF2 and first and second diode D1, D2, so that the first electric capacity 124b is charged, the first electric capacity 124b sets up power voltage supply to inversion change-over circuit 14b whereby.It is worth mentioning that, driver element 120b controls conducting and the cut-off of first and second switch element 1211b, 1222b, so that first and second change-over circuit 121b, 122b energy storage or to the function mode of the first electric capacity 124b charging, those skilled in the art can optionally freely design.
inversion change-over circuit 14b also comprises one first switching circuit 141b, one second switch circuit 142b and an inductive circuit 143b, the first switching circuit 141b also meets second switch circuit 142b, output capacitance Co is coupled between the first switching circuit 141b and second switch circuit 142b, and inductive circuit 143b serial connection output capacitance Co, wherein output capacitance Co also couples between the 4th switch terminal S22 of the second switch terminal S12 of the first output switch S1 and the second output switch S2, so that inversion change-over circuit 14b is by the first output switch S1, to couple output waterline end N2 and the lc circuit 16a of common waterline state, and the first switching circuit 141b comprises one first switch element Q1 and a second switch element Q2, and second switch circuit 142b comprises one the 3rd switch element Q3 and one the 4th switch element Q4, wherein first, second, the the 3rd and the 4th switch element Q1, Q2, Q3, the conducting of Q4 operates with cut-off the operation that is same as general converter (inverter), namely do not given unnecessary details at this.
in sum, the utility model is a kind of uninterruptible power supply provider, and uninterruptible power supply provider is by the alternating expression change-over circuit, so that input current splits into first and second electric current, and driver element is controlled conducting or the cut-off of first and second switch element, first and second electric current difference energy storage is in first and second change-over circuit, or to the first capacitor charging, so that the first electric capacity is set up voltage to power to the inversion change-over circuit, and first and second switch element can receive less electric current, and less electric current makes the loss of the electric components such as first and second switch element diminish, ripple diminishes or reduces electromagnetic interference (EMI).In addition, uninterruptible power supply provider also can become, and small volume, weight are light, cost is lower and reliability is higher, improves whereby the ease of use of uninterruptible power supply provider.Thus, uninterruptible power supply provider of the present utility model improves the convenience of operation.
But disclosed above is only the utility model preferred embodiment, can not limit protection range of the present utility model with this, and the equalization of therefore doing according to the utility model changes or modifies, and still belongs to the scope that the utility model is contained.
Claims (10)
1. a uninterruptible power supply provider, is characterized in that, comprising:
One rectification circuit;
One alternating expression change-over circuit couples this rectification circuit, and this alternating expression change-over circuit comprises:
One first change-over circuit has one first switch element;
One second change-over circuit has a second switch unit;
One driver element couples this first change-over circuit and this second change-over circuit;
One first electric capacity couples this first change-over circuit and this second change-over circuit; And
One inversion change-over circuit couples this alternating expression change-over circuit;
Wherein, this driver element output one first signal is to control this conducting of the first switch element or cut-off, and this driver element output one secondary signal is to control this second switch cell conduction or cut-off, so that this first electric capacity is set up voltage to power to this inversion change-over circuit.
2. uninterruptible power supply provider as claimed in claim 1, it is characterized in that, this first change-over circuit also comprises one first inductance and one first diode, this first inductance couples the anode of this rectification circuit, this first switch element and this first diode, and the negative electrode of this first diode couples this first electric capacity.
3. uninterruptible power supply provider as claimed in claim 1, it is characterized in that, this second change-over circuit also comprises one second inductance and one second diode, this second inductance couples the anode of this rectification circuit, this second switch unit and this second diode, and the negative electrode of this second diode couples this first electric capacity.
4. as claim 1,2 or 3 described uninterruptible power supply providers, it is characterized in that, this alternating expression change-over circuit also comprises one the 3rd diode, and the negative electrode of the 3rd diode couples this first switch element and this second switch unit, and the anode of the 3rd diode couples this first electric capacity.
5. uninterruptible power supply provider as claimed in claim 1, it is characterized in that, this rectification circuit couples civil power, give this alternating expression change-over circuit with rectification output one input current, this input current splits into one first electric current and one second electric current, this first electric current flows into this first change-over circuit, and this second electric current flows into this second change-over circuit.
6. uninterruptible power supply provider as claimed in claim 5, it is characterized in that, during this first switch element conducting, this first electric current this first switch element of flowing through, during this first switch element cut-off, this first electric current flow to this first electric capacity, and during this second switch cell conduction, flow through this second switch unit of this second electric current, during the cut-off of this second switch unit, this second electric current flow to this first electric capacity.
7. uninterruptible power supply provider as claimed in claim 1, is characterized in that, also comprises:
One group of output switch couples between this inversion change-over circuit and a load, and this group output switch comprises one first output switch and one second output switch;
One lc circuit couples between this first output switch, an output waterline end and an output ground terminal; And
One relay switch couples between an input waterline end and this lc circuit.
8. uninterruptible power supply provider as claimed in claim 7, it is characterized in that, also comprise one first electromagnetic interference filter circuit and one second electromagnetic interference filter circuit, this first electromagnetic interference filter circuit couples between this rectification circuit, an input live wire end, this input waterline end and an input ground terminal, and this second electromagnetic interference filter circuit couples between this inversion change-over circuit, an output live wire end, this output waterline end and this output ground terminal.
9. uninterruptible power supply provider as claimed in claim 8, is characterized in that, also comprises a relay unit, is coupled between this rectification circuit and this first electromagnetic interference filter circuit.
10. uninterruptible power supply provider as claimed in claim 7, it is characterized in that, also comprise a phase place lock control circuit, couple this relay switch, when the output phase of this uninterruptible power supply provider is same as the input phase of civil power, this phase place lock control circuit is controlled the conducting of this relay switch, so that this input waterline end connects this output waterline end by this lc circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320235900 CN203278632U (en) | 2013-05-03 | 2013-05-03 | Uninterrupted power supply (UPS) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320235900 CN203278632U (en) | 2013-05-03 | 2013-05-03 | Uninterrupted power supply (UPS) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278632U true CN203278632U (en) | 2013-11-06 |
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ID=49508957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320235900 Expired - Lifetime CN203278632U (en) | 2013-05-03 | 2013-05-03 | Uninterrupted power supply (UPS) |
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| Country | Link |
|---|---|
| CN (1) | CN203278632U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610443A (en) * | 2015-10-22 | 2017-05-03 | 群光电能科技股份有限公司 | Alternating current input voltage sensing device |
| CN108599546A (en) * | 2018-02-13 | 2018-09-28 | 康舒电子(东莞)有限公司 | Power supply device with self- recoverage defencive function |
| TWI661642B (en) * | 2017-09-27 | 2019-06-01 | 台達電子工業股份有限公司 | Uninterruptible power operating apparatus |
| CN110858727A (en) * | 2018-08-24 | 2020-03-03 | 台达电子工业股份有限公司 | Uninterruptible power supply and operation method thereof |
| US10714973B2 (en) | 2017-09-27 | 2020-07-14 | Delta Electronics, Inc. | Uninterruptible power operating apparatus |
-
2013
- 2013-05-03 CN CN 201320235900 patent/CN203278632U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610443A (en) * | 2015-10-22 | 2017-05-03 | 群光电能科技股份有限公司 | Alternating current input voltage sensing device |
| CN106610443B (en) * | 2015-10-22 | 2019-05-24 | 群光电能科技股份有限公司 | AC-input voltage sensing device |
| TWI661642B (en) * | 2017-09-27 | 2019-06-01 | 台達電子工業股份有限公司 | Uninterruptible power operating apparatus |
| TWI699072B (en) * | 2017-09-27 | 2020-07-11 | 台達電子工業股份有限公司 | Uninterruptible power operating apparatus |
| US10714973B2 (en) | 2017-09-27 | 2020-07-14 | Delta Electronics, Inc. | Uninterruptible power operating apparatus |
| CN108599546A (en) * | 2018-02-13 | 2018-09-28 | 康舒电子(东莞)有限公司 | Power supply device with self- recoverage defencive function |
| CN110858727A (en) * | 2018-08-24 | 2020-03-03 | 台达电子工业股份有限公司 | Uninterruptible power supply and operation method thereof |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20131106 |