CN209963959U - High power factor AC voltage stabilizer - Google Patents
High power factor AC voltage stabilizer Download PDFInfo
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- CN209963959U CN209963959U CN201920633880.4U CN201920633880U CN209963959U CN 209963959 U CN209963959 U CN 209963959U CN 201920633880 U CN201920633880 U CN 201920633880U CN 209963959 U CN209963959 U CN 209963959U
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- isolation transformer
- bridge rectifier
- power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
A high power factor AC voltage stabilizer comprises a three-phase isolation transformer, a first three-phase bridge rectifier, a second three-phase bridge rectifier, a filter circuit, a half-bridge inverter and a control circuit, wherein the primary side of the three-phase isolation transformer is a three-phase AC power supply, the secondary side of the three-phase isolation transformer is provided with two secondary side output ends corresponding to each AC power supply, the secondary side output end of one of the three-phase isolation transformer forms an △ type connection, the secondary side output end of the other of the three-phase isolation transformer forms a Y type connection, the first three-phase bridge rectifier, the second three-phase bridge rectifier, the filter circuit is connected with the first three-phase bridge rectifier and the second three-phase bridge rectifier and filters a direct current positive voltage and a direct current negative voltage, the half-bridge inverter is connected with the filter circuit and generates an AC output voltage, each half-bridge inverter supplies power to each power source △ type connection and each Y type connection through each half-wave voltage of.
Description
Technical Field
The present invention relates to an ac voltage stabilizer, and more particularly to an ac voltage stabilizer with high power factor.
Background
Generally, an ac voltage regulator for three-phase ac power, such as taiwan patent No. I234698, mainly controls the switching operation of a switch through a current hysteresis circuit, so as to output a balanced voltage at a power output terminal.
Although the voltage stabilizer for three-phase alternating current can achieve the effect of stabilizing voltage, the control circuit is required to control the sequence of current entering so as to achieve the effect of stabilizing voltage and outputting, so that the control circuit becomes a factor of possible failure, and the control circuit also has power consumption, so that the control circuit cannot have a better power factor.
Therefore, how to eliminate the above-mentioned defects is the difficulty that the present inventors want to solve.
SUMMERY OF THE UTILITY MODEL
In view of the above problems of the conventional three-phase ac voltage stabilizer, an object of the present invention is to provide an ac voltage stabilizer with high power factor.
To achieve the above object, the present invention provides an ac voltage stabilizer with high power factor, which includes:
the primary side of the three-phase isolation transformer is a three-phase power supply, the secondary side of the three-phase isolation transformer corresponds to each phase of alternating current power supply and is respectively provided with two secondary side output ends, the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms an △ type connection, and the other secondary side output end of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms a Y type connection.
And a first three-phase bridge rectifier connected to △ -type connection formed at the secondary side output end of one of the three-phase isolation transformers corresponding to each phase of the AC power supply.
And the second three-phase bridge rectifier is connected with a Y-shaped connection wire formed at the other secondary side output end of each phase of the alternating current power supply corresponding to the three-phase isolation transformer.
The △ type wire is rectified by the first three-phase bridge rectifier to generate a DC positive voltage, and the Y type wire is rectified by the second three-phase bridge rectifier to generate a DC negative voltage.
And the filter circuit is connected with the first three-phase bridge rectifier and the second three-phase bridge rectifier and filters the direct-current positive voltage and the direct-current negative voltage.
And the half-bridge inverter is connected with the filter circuit and generates alternating current output voltage through the half-bridge inverter.
By supplying power to each half-wave voltage of the half-bridge inverter through each △ type wiring through the first three-phase bridge rectifier and each Y type wiring through the second three-phase bridge rectifier, the power consumed by the △ type wiring and the Y type wiring are almost the same, the power factor is enabled to be larger than 0.95, and the effect of high power factor and no need of using an additional control circuit is achieved.
And simultaneously, the utility model discloses can add two sets of half bridge type dc-to-ac converters and half bridge type dc-to-ac converter parallelly connected in this filter circuit rear end, by can producing three-phase alternating current output voltage.
The utility model provides another kind of embodiment, a can reach high merit reason alternating current voltage stabilizer, it includes:
the primary side of the three-phase isolation transformer is a three-phase power supply, the secondary side of the three-phase isolation transformer corresponds to each phase of alternating current power supply and is respectively provided with two secondary side output ends, the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms △ -type wiring, and the other secondary side output end of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms Y-type wiring.
And a first three-phase bridge rectifier connected to △ -type connection formed at the secondary side output end of one of the three-phase isolation transformers corresponding to each phase of the AC power supply.
And the second three-phase bridge rectifier is connected with a Y-shaped connection wire formed at the other secondary side output end of each phase of the alternating current power supply corresponding to the three-phase isolation transformer.
The △ type wire is rectified by the first three-phase bridge rectifier to generate a DC positive voltage, and the Y type wire is rectified by the second three-phase bridge rectifier to generate a DC negative voltage.
And the boosting circuit with the electric storage device is connected with the first three-phase bridge rectifier and the second three-phase bridge rectifier and boosts the direct-current positive voltage and the direct-current negative voltage.
And the half-bridge inverter is connected with the booster circuit with the electric storage device and generates alternating current output voltage through the half-bridge inverter.
The half-wave voltage of each half-bridge inverter is respectively supplied by each △ type wiring through the first three-phase bridge rectifier and each Y type wiring through the second three-phase bridge rectifier, so that the power consumed by the △ type wiring and the Y type wiring are nearly the same, better linear current is generated, the power factor is larger than 0.95, and the effects of high power factor and no need of using an additional control circuit are achieved.
When the input end of the three-phase power supply is in power failure, the electric storage device in the booster circuit with the electric storage device outputs direct current to boost, and then the inverter can also provide output power supply of 2.5-3 HZ.
The power storage device in the booster circuit having the power storage device can be replaced with a power storage device having a different power storage amount as required.
The utility model discloses a can add two sets of half bridge type dc-to-ac converters again and parallelly connected with half bridge type dc-to-ac converter in this booster circuit rear end that has power storage device, can be in order to produce three-phase alternating current output voltage.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is a schematic diagram of the square of the present invention.
Fig. 2A is a schematic block flow diagram of the present invention.
Fig. 3 is a schematic diagram of the three-phase output of the present invention.
Fig. 4 is a schematic diagram of the utility model with three-phase output blocks added.
Fig. 5 is a schematic diagram of the uninterruptible power circuit of the present invention.
Fig. 6 is a schematic diagram of the uninterruptible power circuit block of the present invention.
Fig. 6A is a schematic flow chart of the uninterruptible circuit block of the present invention.
Fig. 7 is a schematic diagram of the three-phase output of the uninterruptible circuit of the present invention.
Fig. 8 is a schematic diagram of the three-phase output block of the uninterruptible power supply circuit of the present invention.
Description of the reference numerals
1 three-phase power supply 21 three-phase isolation transformer
Secondary side output terminal of 3 △ type connection 31
32 secondary side output terminal 33 secondary side output terminal
Secondary side output end of 4Y type wiring 41
42 secondary side output terminal 43 secondary side output terminal
5 first three-phase bridge rectifier 51 DC positive voltage
6 second three-phase bridge rectifier 61 DC negative voltage
7 filter circuit 8 half-bridge inverter
81 half-bridge inverter 82 half-bridge inverter
The voltage booster circuit 9 has a power storage device.
Detailed Description
For further convenience and conciseness in understanding other characteristic contents and advantages of the present invention and the efficacy achieved thereby, the present invention will now be described in detail with reference to the accompanying drawings as follows:
referring to fig. 1 and 2, an ac voltage regulator with high power factor includes:
the three-phase isolation transformer 21, the primary side of the three-phase isolation transformer 21 is a three-phase power supply, the secondary side of the three-phase isolation transformer 21 corresponds to each phase of the alternating current power supply and has two secondary side output terminals 31, 32, 33, 41, 42, 43, the three-phase isolation transformer 21 corresponds to one of the secondary side output terminals 31, 32, 33 of each phase of the alternating current power supply and forms an △ type wiring 3, and the three-phase isolation transformer 21 corresponds to the other secondary side output terminal 41, 42, 43 of each phase of the alternating current power supply and forms a Y type wiring 4.
A first three-phase bridge rectifier 5 connected to the △ type connection 3 formed on the secondary side output terminal 31, 32, 33 of one of the three-phase isolation transformer 21 corresponding to each phase of the ac power.
And a second three-phase bridge rectifier 6 connected to the Y-shaped connection 4 formed at the other secondary side output terminals 41, 42, 43 of the three-phase isolation transformer 21 corresponding to each phase of the ac power.
The △ -type connection 3 is rectified by the first three-phase bridge rectifier 5 to generate a dc positive voltage 51, and the Y-type connection 4 is rectified by the second three-phase bridge rectifier 6 to generate a dc negative voltage 61.
A filter circuit 7, wherein the filter circuit 7 is connected to the first three-phase bridge rectifier 5 and the second three-phase bridge rectifier 6, and filters the dc positive voltage 51 and the dc negative voltage 61.
A half-bridge inverter 8, wherein the half-bridge inverter 8 is connected to the filter circuit 7, and an ac output voltage is generated by the half-bridge inverter 8.
Referring to fig. 2A, each half-wave voltage of the half-bridge inverter 8 is supplied by the △ type connection wires 3 through the first three-phase bridge rectifier 5 and the Y-type connection wires 4 through the second three-phase bridge rectifier 6, so that the power consumed by the △ type connection wires 3 and the Y-type connection wires 4 is approximately the same, and the half-bridge inverter generates a better linear current, so that the power factor is greater than 0.95, thereby achieving the effect of high power factor without using an additional control circuit.
Referring to fig. 3 and 4, the present invention can add two sets of half- bridge inverters 81 and 82 at the rear end of the filter circuit 7 to be connected in parallel with the half-bridge inverter 8, so as to generate a three-phase ac output voltage.
Referring to fig. 5 and 6, another embodiment of the present invention is an ac voltage stabilizer with high power factor and its uninterruptible power device, including:
the three-phase isolation transformer 21, the primary side of the three-phase isolation transformer 21 is a three-phase power supply, the secondary side of the three-phase isolation transformer 21 corresponds to each phase of the alternating current power supply and has two secondary side output terminals 31, 32, 33, 41, 42, 43, the three-phase isolation transformer 21 corresponds to one of the secondary side output terminals 31, 32, 33 of each phase of the alternating current power supply and forms an △ type wiring 3, and the three-phase isolation transformer 21 corresponds to the other secondary side output terminal 41, 42, 43 of each phase of the alternating current power supply and forms a Y type wiring 4.
A first three-phase bridge rectifier 5 connected to the △ type connection 3 formed on the secondary side output terminal 31, 32, 33 of one of the three-phase isolation transformer 21 corresponding to each phase of the ac power.
And a second three-phase bridge rectifier 6 connected to the Y-shaped connection 4 formed at the other secondary side output terminals 41, 42, 43 of the three-phase isolation transformer 21 corresponding to each phase of the ac power.
The △ -type connection 3 is rectified by the first three-phase bridge rectifier 5 to generate a dc positive voltage 51, and the Y-type connection 4 is rectified by the second three-phase bridge rectifier 6 to generate a dc negative voltage 61.
And a boost circuit 9 having an electric storage device, wherein the boost circuit 9 having the electric storage device is connected to the first three-phase bridge rectifier 5 and the second three-phase bridge rectifier 6, and boosts the dc positive voltage 51 and the dc negative voltage 61.
And a half-bridge inverter 8, wherein the half-bridge inverter 8 is connected to the booster circuit 9 having the electric storage device, and the half-bridge inverter 8 generates an ac output voltage.
Referring to fig. 6A, each half-wave voltage of the half-bridge inverter 8 is supplied by the △ type connection line 3 through the first three-phase bridge rectifier 5 and the Y-type connection line 4 through the second three-phase bridge rectifier 6, so that the power consumed by the △ type connection line 3 and the Y-type connection line 4 is approximately the same, and a better linear current is generated, and the power factor is greater than 0.95, thereby achieving the effect of high power factor without using an additional control circuit.
When the input end of the three-phase power supply 1 is powered off, the electric storage device in the booster circuit 9 with the electric storage device outputs direct current to boost, and then the output power supply of 2.5-3 HZ can be provided through the half-bridge inverter 8.
The power storage device in the booster circuit 9 having the power storage device can be replaced with a power storage device having a different power storage amount as required.
Referring to fig. 7 and 8, the present invention can add two sets of half- bridge inverters 81 and 82 to the rear end of the boost circuit 9 with the power storage device to be connected in parallel with the half-bridge inverter 8, so as to generate a three-phase ac output voltage.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (4)
1. A high power factor AC voltage stabilizer is characterized in that the high power factor AC voltage stabilizer comprises:
the primary side of the three-phase isolation transformer is a three-phase power supply, the secondary side of the three-phase isolation transformer corresponds to each phase of alternating current power supply and is respectively provided with two secondary side output ends, the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms an △ type connection, and the other secondary side output end of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms a Y type connection;
a first three-phase bridge rectifier connected to △ -type connection formed at the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of the AC power;
a second three-phase bridge rectifier connected to a Y-type connection formed at the output end of the other secondary side of each AC power supply corresponding to the three-phase isolation transformer;
the filter circuit is connected with the first three-phase bridge rectifier and the second three-phase bridge rectifier;
and the half-bridge inverter is connected with the filter circuit and is used for generating an alternating current output voltage.
2. The high power factor ac regulator of claim 1, wherein the half-bridge inverter further comprises two sets of half-bridge inverters connected in parallel.
3. A high power factor AC voltage stabilizer is characterized in that the high power factor AC voltage stabilizer comprises:
the primary side of the three-phase isolation transformer is a three-phase power supply, the secondary side of the three-phase isolation transformer corresponds to each phase of alternating current power supply and is respectively provided with two secondary side output ends, the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms an △ type connection, and the other secondary side output end of the three-phase isolation transformer corresponding to each phase of alternating current power supply forms a Y type connection;
a first three-phase bridge rectifier connected to △ -type connection formed at the secondary side output end of one of the three-phase isolation transformer corresponding to each phase of the AC power;
a second three-phase bridge rectifier connected to a Y-type connection formed at the output end of the other secondary side of each AC power supply corresponding to the three-phase isolation transformer;
the booster circuit with the electric storage device is connected with the first three-phase bridge rectifier and the second three-phase bridge rectifier;
a half-bridge inverter connected to the booster circuit having the electric storage device, the half-bridge inverter being configured to generate an ac output voltage.
4. The high power factor ac regulator of claim 3, wherein the half-bridge inverter further comprises two sets of half-bridge inverters connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633880.4U CN209963959U (en) | 2019-05-06 | 2019-05-06 | High power factor AC voltage stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633880.4U CN209963959U (en) | 2019-05-06 | 2019-05-06 | High power factor AC voltage stabilizer |
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| Publication Number | Publication Date |
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| CN209963959U true CN209963959U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920633880.4U Expired - Fee Related CN209963959U (en) | 2019-05-06 | 2019-05-06 | High power factor AC voltage stabilizer |
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| CN (1) | CN209963959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4383545A1 (en) * | 2022-12-05 | 2024-06-12 | Huawei Digital Power Technologies Co., Ltd. | Power supply apparatus, three-phase transformer circuit, and charging pile |
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2019
- 2019-05-06 CN CN201920633880.4U patent/CN209963959U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4383545A1 (en) * | 2022-12-05 | 2024-06-12 | Huawei Digital Power Technologies Co., Ltd. | Power supply apparatus, three-phase transformer circuit, and charging pile |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 Termination date: 20210506 |