CN205336097U - Be applied to soft start circuit among single -phase invertion power supply of low -power - Google Patents
Be applied to soft start circuit among single -phase invertion power supply of low -power Download PDFInfo
- Publication number
- CN205336097U CN205336097U CN201521091901.2U CN201521091901U CN205336097U CN 205336097 U CN205336097 U CN 205336097U CN 201521091901 U CN201521091901 U CN 201521091901U CN 205336097 U CN205336097 U CN 205336097U
- Authority
- CN
- China
- Prior art keywords
- power
- power model
- phase
- soft start
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Rectifiers (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses a be applied to soft start circuit among single -phase invertion power supply of low -power. It includes rectifier circuit, six tubs of three -phase bridge power modules, soft starting resistance and female electric capacity of arranging, the positive negative terminal of rectifier circuit output is lug connection to the positive negative terminal of six tubs of three -phase bridge power modules respectively, and single -phase contravariant topology is formed to four switch tubes of double -phase bridge arm in the module, in the module in two switch tubes of a remaining looks bridge arm an arbitrary soft starting resistance the bypass switch of conduct. After electricity soft starting resistance of stage is full of female row's electric capacity completion soft start on the power, realize the bypass to soft starting resistance by remaining switch tube in the power module, accomplish the soft start process. This kind of new soft start circuit compares conventional soft start circuit and can save a big power relay.
Description
Technical field
This utility model relates to the soft starting circuit in low-power Single-Phase Inverter Source。。
Background technology
The main circuit topology of Single-Phase Inverter Source is that rectification circuit adds inverter circuit, and inverter circuit mostly is voltage-type inversion, is parallel with the busbar electric capacity of bigger capacitance at rectification circuit output end namely inverter circuit input, plays the effect of energy storage pressure stabilizing。
Inverter circuit is four pipe H bridge topological structure, in low-power type, for improving whole aircraft reliability, generally selects and is internally integrated the power model being packaged with multiple semiconductor switch pipe to constitute main circuit。This power model includes IGBT module (IGBT), SPM (IPM) etc.。
The form of six pipe three-phase bridge it is typically designed to, four pipe H bridge forms very rare corresponding to the commercial power module of lower wattage power supply。Therefore common method for designing is, selects six pipe three-phase bridge power models, utilizes four pipe H bridges therein to constitute the main topology of inversion of Single-Phase Inverter Source, and two pipes of a remaining phase brachium pontis are on the shelf。
Existence with the busbar electric capacity of bigger capacitance, electric capacity is connected to the outfan of rectification circuit, when powering on, owing to charging current is excessive, busbar electric capacity will be caused damage, therefore, Single-Phase Inverter Source must design soft starting circuit for realizing the slow charging to busbar electric capacity at power up phase, to reduce electrical network dash current, it is to avoid the damage to rectified current and busbar electric capacity。
In order to solve above-mentioned technical problem, in prior art, it is common that adopt soft start circuit structure as shown in Figure 1,
Prior art is applied to the soft starting circuit in low-power Single-Phase Inverter Source as shown in Figure 1。In Fig. 1, described in be applied in low-power Single-Phase Inverter Source soft starting circuit include rectification circuit 2, six pipe three-phase bridge power model 1, soft start resistance 3 and busbar electric capacity 4。The positive and negative terminal of described busbar electric capacity also receives anode 113 and the negative terminal 114 of power model 1, seals in the parallel combination of a soft start resistance 3 and a relay 5 between output plus terminal 21 and the anode 113 of power model 1 of described rectification circuit 2。The midpoint end 117 of the third phase brachium pontis of described power model 1 is vacant, and the midpoint end 115 and 116 of all the other first-phases and second-phase brachium pontis is as the outfan of inverter。At power up phase, the contact making relay 5 is off, busbar electric capacity 4 is charged by rectification circuit 2 by soft start resistance 3, owing to there is a soft start resistance current limliting on charge circuit, the charging current of busbar electric capacity 4 can be limited in an acceptable scope。Along with the carrying out of charging, charging current progressively reduces, until busbar electric capacity 4 is full of, closes now by controlling relay 5, and soft start resistance 3 is bypassed, hereafter inverter circuit normal operation, and the path of the current pass drawn from rectification circuit 2 becomes relay contact。Relay contact is Low ESR low-loss path, and power supply energy can normal delivery。
In the soft starting circuit of above-mentioned Single-Phase Inverter Source circuit, the contact capacity of relay needs to match with rectification circuit output current value, accordingly, it would be desirable to use a large volume of high power relay。Add component quantity, complete machine weight, volume and cost。
Summary of the invention
The purpose of this utility model is to provide a kind of soft starting circuit being applied in low-power Single-Phase Inverter Source, its simple in construction, can save a high power relay, thus reducing circuit elements number of packages, complete machine weight, volume and cost。
A kind of soft starting circuit being applied in low-power Single-Phase Inverter Source of the present utility model, it is possible to realized by following two technical schemes。
Scheme one:
A kind of soft starting circuit being applied in low-power Single-Phase Inverter Source of the present utility model, including rectification circuit, power model, soft start resistance and busbar electric capacity, it is characterized in that: described power model is six pipe three-phase bridge power models, the output plus terminal of described rectification circuit is directly connected to the anode of power model, and the output negative terminal of described rectification circuit is directly connected to the negative terminal of power model；One end of described soft start resistance is connected to the anode of described power model, and the other end is connected to the midpoint end of the third phase brachium pontis of power model；The anode of described busbar electric capacity is connected to the midpoint end of the third phase brachium pontis of power model, the negative terminal of busbar electric capacity is connected to the negative terminal of power model, is namely realized the bypass to soft start resistance by the side switch pipe of third phase brachium pontis in power model and the parallel combination of anti-also diode thereof；The first-phase of described power model and the midpoint end of second-phase brachium pontis are as the outfan of inverter。
Scheme two:
A kind of soft starting circuit being applied in low-power Single-Phase Inverter Source, including rectification circuit, power model, soft start resistance and busbar electric capacity, it is characterized in that: described power model is six pipe three-phase bridge power models, the output plus terminal of described rectification circuit is directly connected to the anode of power model, and the output negative terminal of described rectification circuit is directly connected to the negative terminal of power model；One end of described soft start resistance is connected to the midpoint end of power model third phase brachium pontis, the other end is connected to the negative terminal of power model, the anode of busbar electric capacity is connected to the anode of power model, the negative terminal of busbar electric capacity is connected to the midpoint end of the third phase brachium pontis of power model, is namely realized the bypass to soft start resistance by the side switch pipe of third phase brachium pontis in power model and the parallel combination of anti-also diode thereof；The first-phase of described power model and the midpoint end of second-phase brachium pontis are as the outfan of inverter。
Adopt a kind of soft starting circuit being applied in low-power Single-Phase Inverter Source of technical solutions of the utility model, have the advantage that
1. saving a powerful relay in soft starting circuit of the present utility model, the circuit structure making power supply is simple, number of elements is few, effectively reduces the hardware cost of inverter；
2. soft starting circuit of the present utility model saves a powerful relay, is substantially reduced the volume and weight of inverter。
Accompanying drawing explanation
Fig. 1 is the structural representation of the soft starting circuit being applied in low-power Single-Phase Inverter Source in prior art；
Fig. 2 is the structural representation of the embodiment of the soft starting circuit technical scheme one that this utility model is applied in low-power Single-Phase Inverter Source；This embodiment is based on the side switch pipe of the third phase brachium pontis of power model and anti-and that diode realization is to the bypass of soft start resistance embodiment thereof。
Fig. 3 is the structural representation of the embodiment of the soft starting circuit technical scheme two being applied in low-power Single-Phase Inverter Source of the present utility model；This embodiment is based on the side switch pipe of the third phase brachium pontis of power model and anti-and that diode realization is to the bypass of soft start resistance embodiment thereof。
In Fig. 1-3, in figure, 1 is six pipe three-phase bridge power models, and 101 ~ 106 is module breaker in middle pipe, 107 ~ 112 is anti-in module and diode, 113 is power model anode, and 114 is power model negative terminal, and 115,116,117 are power model three-phase brachium pontis midpoint end, 2 is rectification circuit, 21 is rectification circuit output plus terminal, and 22 export negative terminal for rectification circuit, and 3 is soft start resistance, 4 is busbar electric capacity, and 5 is relay。
Prior art is applied to the soft starting circuit in low-power Single-Phase Inverter Source as shown in Figure 1。In Fig. 1, described in be applied in low-power Single-Phase Inverter Source soft starting circuit include rectification circuit 2, six pipe three-phase bridge power model 1, soft start resistance 3 and busbar electric capacity 4。The positive and negative terminal of described busbar electric capacity also receives anode 113 and the negative terminal 114 of power model 1, seals in the parallel combination of a soft start resistance 3 and a relay 5 between output plus terminal 21 and the anode 113 of power model 1 of described rectification circuit 2。The midpoint end 117 of the third phase brachium pontis of described power model 1 is vacant, and the midpoint end 115 and 116 of all the other first-phases and second-phase brachium pontis is as the outfan of inverter。At power up phase, the contact making relay 5 is off, busbar electric capacity 4 is charged by rectification circuit 2 by soft start resistance 3, owing to there is a soft start resistance current limliting on charge circuit, the charging current of busbar electric capacity 4 can be limited in an acceptable scope。Along with the carrying out of charging, charging current progressively reduces, until busbar electric capacity 4 is full of, closes now by controlling relay 5, and soft start resistance 3 is bypassed, hereafter inverter circuit normal operation, and the path of the current pass drawn from rectification circuit 2 becomes relay contact。Relay contact is Low ESR low-loss path, and power supply energy can normal delivery。
Detailed description of the invention
Embodiment one:
It is described further below in conjunction with accompanying drawing 2 and a pair the technical solution of the utility model of specific embodiment one。
Fig. 2 is based on the side switch pipe of the third phase brachium pontis of power model of the present utility model and anti-and that diode realization is to the bypass of soft start resistance embodiment thereof。The soft starting circuit being applied in low-power Single-Phase Inverter Source of the present embodiment includes rectification circuit 2, six pipe three-phase bridge power model 1, soft start resistance 3 and busbar electric capacity 4。The output plus terminal 21 of described rectification circuit 2 is directly connected to the anode 113 of power model 1, the output negative terminal 22 of rectification circuit 2 is directly connected to the negative terminal 114 of power model 1, one end of soft start resistance 3 is connected to the anode 113 of power model 1, the other end is connected to the midpoint end 117 of the third phase brachium pontis of power model 1, the anode of busbar electric capacity 4 is connected to the midpoint end 117 of the third phase brachium pontis of power model 1, negative terminal is connected to the negative terminal 114 of power model 1, and the other two brachium pontis midpoint end 115 and 116 of power model 1 is as the outfan of inverter。In described six pipe three-phase bridge power models 1, four switching tubes 101,104,102,105 of first-phase brachium pontis and second-phase brachium pontis and anti-and diode 107,110,108,111 thereof form single-phase inversion topology。
Below in conjunction with accompanying drawing 2, the operation principle of the embodiment one of the soft starting circuit being applied in low-power Single-Phase Inverter Source of the present utility model done a detailed description:
At power up phase, in power model 1, all switching tube 101-106 are in cut-off state, busbar electric capacity 4 is charged by rectification circuit 2 by soft start resistance 3, owing to there is soft start resistance 3 current limliting on charge circuit, the charging current of busbar electric capacity 4 can be limited in an acceptable scope。Carrying out along with charging, charging current progressively reduces, until busbar electric capacity 4 is full of, turn on now by controlling switching tube 103 in power model 1, soft start resistance 3 is bypassed, switching tube 103 in the conduction state in described power model 1 and anti-and diode 109 parallel combination thereof constitute one can two-way through-flow path, the anode of busbar electric capacity 4 is connected on the anode 113 of power model 1 by this Low ESR low-loss path, play the effect of energy storage pressure stabilizing, complete the soft start-up process that powers on。Hereafter inverter circuit can start properly functioning。
Embodiment two:
Fig. 3 is the side switch pipe of the third phase brachium pontis based on power model of technical solutions of the utility model two and anti-and that diode realization is to the bypass of soft start resistance embodiment thereof。
It is different in that with Fig. 2 embodiment: soft start resistance 3 and busbar electric capacity 4 transposition, namely one end of soft start resistance 3 is connected to the midpoint end 117 of the third phase brachium pontis of power model 1, the other end is connected to the negative terminal 114 of power model 1, the anode of busbar electric capacity 4 is connected to the anode 113 of power model 1, and the other end is connected to the midpoint end 117 of the third phase brachium pontis of power model 1。
Below in conjunction with accompanying drawing 3, the operation principle of the present embodiment two done a detailed description:
At power up phase, in power model 1, all switching tube 101-106 are in cut-off state, busbar electric capacity 4 is charged by rectification circuit 2 by soft start resistance 3, owing to there is soft start resistance 3 current limliting on charge circuit, the charging current of busbar electric capacity 4 can be limited in an acceptable scope。Carrying out along with charging, charging current progressively reduces, until busbar electric capacity 4 is full of, turn on now by controlling switching tube 106 in power model 1, soft start resistance 3 is bypassed, switching tube 106 in the conduction state in described power model 1 and anti-and diode 112 parallel combination thereof constitute one can two-way through-flow path, the negative terminal of busbar electric capacity 4 is connected on the negative terminal 114 of power model 1 by this Low ESR low-loss path, play the effect of energy storage pressure stabilizing, complete the soft start-up process that powers on。Hereafter inverter circuit can start properly functioning。
The foregoing is only preferred embodiment of the present utility model, all equivalence changes done according to this utility model claim, all should belong to protection domain of the present utility model。
The soft starting circuit adopting technical solutions of the utility model can apply in various lower powered Single-Phase Inverter Source。
Claims (2)
1. the soft starting circuit being applied in low-power Single-Phase Inverter Source, including rectification circuit (2), power model (1), soft start resistance (3) and busbar electric capacity (4), it is characterized in that: described power model (1) is six pipe three-phase bridge power models, the output plus terminal (21) of described rectification circuit (2) is directly connected to the anode (113) of power model (1), and the output negative terminal (22) of described rectification circuit (2) is directly connected to the negative terminal (114) of power model (1)；One end of described soft start resistance (3) is connected to the anode (113) of described power model (1), and the other end is connected to the midpoint end (117) of the third phase brachium pontis of power model (1)；The anode of described busbar electric capacity (4) is connected to the midpoint end (117) of the third phase brachium pontis of power model (1), and the negative terminal of busbar electric capacity (4) is connected to the negative terminal (114) of power model (1)；The bypass to soft start resistance is realized by the side switch pipe (103) of third phase brachium pontis in power model (1) and the parallel combination of anti-also diode (109) thereof；The first-phase of described power model (1) and the midpoint end (115) of second-phase brachium pontis and (116) are as the outfan of inverter。
2. the soft starting circuit being applied in low-power Single-Phase Inverter Source, including rectification circuit (2), power model (1), soft start resistance (3) and busbar electric capacity (4), it is characterized in that: described power model (1) is six pipe three-phase bridge power models, the output plus terminal (21) of described rectification circuit (2) is directly connected to the anode (113) of power model (1), and the output negative terminal (22) of described rectification circuit (2) is directly connected to the negative terminal (114) of power model (1)；One end of described soft start resistance (3) is connected to the midpoint end (117) of power model (1) third phase brachium pontis, the other end is connected to the negative terminal (114) of power model (1), the anode of busbar electric capacity (4) is connected to the anode (113) of power model (1), negative terminal is connected to the midpoint end (117) of the third phase brachium pontis of power model (1), is namely realized the bypass to soft start resistance by the side switch pipe (106) of third phase brachium pontis in power model (1) and the parallel combination of anti-also diode (112) thereof；The first-phase of described power model (1) and the midpoint end (115) of second-phase brachium pontis and (116) are as the outfan of inverter。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521091901.2U CN205336097U (en) | 2015-12-25 | 2015-12-25 | Be applied to soft start circuit among single -phase invertion power supply of low -power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521091901.2U CN205336097U (en) | 2015-12-25 | 2015-12-25 | Be applied to soft start circuit among single -phase invertion power supply of low -power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205336097U true CN205336097U (en) | 2016-06-22 |
Family
ID=56207689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521091901.2U Withdrawn - After Issue CN205336097U (en) | 2015-12-25 | 2015-12-25 | Be applied to soft start circuit among single -phase invertion power supply of low -power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205336097U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549596A (en) * | 2016-12-01 | 2017-03-29 | 西安奥特迅电力电子技术有限公司 | A kind of active power transfer device for two-way dc source inlet wire stand-by heat each other |
| CN106921287A (en) * | 2015-12-25 | 2017-07-04 | 新大陆科技集团有限公司 | A kind of soft starting circuit being applied in low-power Single-Phase Inverter Source |
-
2015
- 2015-12-25 CN CN201521091901.2U patent/CN205336097U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921287A (en) * | 2015-12-25 | 2017-07-04 | 新大陆科技集团有限公司 | A kind of soft starting circuit being applied in low-power Single-Phase Inverter Source |
| CN106921287B (en) * | 2015-12-25 | 2019-08-09 | 新大陆科技集团有限公司 | A kind of soft starting circuit applied in low-power Single-Phase Inverter Source |
| CN106549596A (en) * | 2016-12-01 | 2017-03-29 | 西安奥特迅电力电子技术有限公司 | A kind of active power transfer device for two-way dc source inlet wire stand-by heat each other |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103915856B (en) | A kind of base station is grid-connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN105958823A (en) | Current continuous high-gain switch voltage rise quasi-Z-source converter circuit | |
| CN106208641A (en) | A kind of circuit of alternating current-direct current multiplexing | |
| CN104901410A (en) | UPS circuit | |
| CN104362924A (en) | SPWM-based (sinusoidal pulse width modulation) fault-tolerance control method of three-phase open-winding PMSM (permanent magnet synchronous motor) drive system | |
| CN103117650A (en) | Quasi Z source inverter | |
| CN104300859A (en) | Switch reluctance generator power converter topological structure and control method thereof | |
| CN203368361U (en) | Photovoltaic inverter with multipath direct current input | |
| CN104253549A (en) | LCL filtering-based circuit topology structure of high-power PWM (pulse-width modulation) rectifier | |
| CN101699699A (en) | Uninterruptible power supply | |
| CN204190636U (en) | PWM rectifier circuit topological structure | |
| CN205336097U (en) | Be applied to soft start circuit among single -phase invertion power supply of low -power | |
| CN103888004A (en) | Single-phase PWM rectifier for railway AC/DC/AC standby power supply | |
| CN202906774U (en) | High-power photovoltaic inverter with automatic power-off auxiliary power supply circuit | |
| CN103762630B (en) | A kind of rectification circuit and ups system thereof | |
| CN212588279U (en) | DC/AC power conversion device structure | |
| CN102403920B (en) | Three-level half-bridge photovoltaic grid connected inverter | |
| CN106602888A (en) | Three-bridge-arm topology circuit, control method and uninterruptible power supply | |
| CN105576813B (en) | A kind of the battery group mounting circuit and uninterruptible power supply of uninterruptible power supply | |
| CN108667323A (en) | Alternating current-direct current input adaptive switching power circuit | |
| CN206117540U (en) | Switch accurate Z source dc -to -ac converter of type high -gain that steps up | |
| CN205335840U (en) | Join in marriage network current compensation arrangement | |
| CN203671834U (en) | Soft start charging circuit | |
| CN104660025A (en) | Busbar voltage soft starting method of uninterruptible power supply | |
| CN103986362A (en) | Z-source inverter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20190809 |
|
| AV01 | Patent right actively abandoned |