CN108574283B - Device capable of operating single-phase compressor under power voltage fluctuation - Google Patents
Device capable of operating single-phase compressor under power voltage fluctuation Download PDFInfo
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- CN108574283B CN108574283B CN201810707719.7A CN201810707719A CN108574283B CN 108574283 B CN108574283 B CN 108574283B CN 201810707719 A CN201810707719 A CN 201810707719A CN 108574283 B CN108574283 B CN 108574283B
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- current contactor
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- 239000003990 capacitor Substances 0.000 claims abstract description 48
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
Abstract
The invention discloses a device capable of enabling a single-phase compressor to operate under power voltage fluctuation, which comprises a controller AP, an alternating-current contactor KM, a voltage relay K, an operating capacitor C1 and a booster capacitor C2, wherein a live wire L and a zero wire N are respectively connected with the single-phase compressor MC through the alternating-current contactor, the booster capacitor C2 is respectively connected with the voltage relay K, the alternating-current contactor KM and the single-phase compressor MC, the controller AP controls the alternating-current contactor KM, and the voltage relay K controls the input of the booster capacitor C2 when the power grid voltage fluctuation is too low. According to the invention, the voltage relay is used for detecting the power grid voltage, when the voltage fluctuation is lower than the set value, the power-assisted capacitor is put into the power-assisted capacitor, so that the normal operation of the press is ensured, and the influence of the power grid voltage fluctuation on a user is reduced.
Description
Technical Field
The invention relates to the field of control devices of single-phase compressors, in particular to a device capable of enabling a single-phase compressor to operate under power voltage fluctuation.
Background
The household air source heat pump unit is used in the project of energy-saving and environment-friendly 'coal power conversion', the single-phase 220V compressor is used, and the power supply grid can be frequently fluctuated in vast rural areas and areas where electric loads are concentrated in winter, so that the air source heat pump unit stops for alarming, heating of users and use of hot water are seriously affected, and therefore a control device is needed to reduce the stop of the air source heat pump unit before the power grid is not transformed.
The invention aims to provide a device capable of enabling a single-phase compressor to operate under power supply voltage fluctuation, so as to solve the problem that the use of an air source heat pump unit is affected by frequent fluctuation of a power supply grid in areas where electric loads are concentrated in vast rural areas and winter in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an apparatus for enabling single phase compressor operation under power supply voltage fluctuations, comprising: the system comprises a host controller AP with the model of SL1628-CW, an alternating current contactor KM with the model of EX9CV25 1811 3P 220V, a voltage relay K with the model of JX9JP-10-220V, an operating capacitor C1 with the model of CBB65 80 mu f/450VAC and a boost capacitor C2 with the model of CBB61 mu f/450VAC, wherein a live wire L and a zero wire N are respectively connected with a single-phase compressor MC through the alternating current contactor, the voltage relay K is connected with the alternating current contactor KM, the operating capacitor C1 and the boost capacitor C2 are respectively connected with the voltage relay K, the alternating current contactor KM and the single-phase compressor MC, the controller AP is connected with the alternating current contactor KM, and the controller AP controls the alternating current contactor KM and controls the input of the boost capacitor C2 when the voltage fluctuation of a power grid is too low.
The device capable of operating under the power voltage fluctuation of the single-phase compressor is characterized in that: the live wire L is connected with A1L 1 pin of an alternating current contactor KM, a zero line N is connected with a 3L2 pin of the alternating current contactor KM, A1L 1 pin of the alternating current contactor KM is connected with a L pin of a voltage relay K, a 3L2 pin of the alternating current contactor KM is connected with an N pin of the voltage relay K, A2L 1 pin of the alternating current contactor KM is connected with a wiring terminal 1 of an operation capacitor C1 and an R end of a single-phase compressor MC, a 4L2 pin of the alternating current contactor KM is connected with a C end of the single-phase compressor MC, a wiring terminal 2 of the operation capacitor C1 is connected with an S end of the single-phase compressor, a wiring terminal 2 of the operation capacitor C1 is also connected with a wiring terminal 2 of a booster capacitor C2, a wiring terminal 1 of the operation capacitor C1 is also connected with a wiring terminal 11 of the voltage relay K, and an A1 pin of the alternating current contactor KM is respectively connected with a controller AP.
The device capable of operating under the power voltage fluctuation of the single-phase compressor is characterized in that: the intelligent control system further comprises a current transformer DL with the model SL1808TC, wherein the current transformer DL is arranged on a lead between a terminal 1 of the running capacitor C1 and a 2L1 pin of the alternating current contactor KM, and is connected into the controller AP.
The device capable of operating under the power voltage fluctuation of the single-phase compressor is characterized in that: the miniature electric contactor also comprises a miniature air switch QF with the model of EX9BV 1P D32, wherein a live wire L is connected with a wiring terminal 1 of the miniature air switch QF, and a wiring terminal 2 of the miniature air switch QF is connected with a 1L1 pin of an alternating current contactor KM.
The device capable of operating under the power voltage fluctuation of the single-phase compressor is characterized in that: the electric power transformer further comprises a binding post XT with the model UTD-41/3P, wherein an L pin of the binding post XT is connected with a live wire L, an N pin of the binding post XT is connected with a zero line N, an L pin of the binding post XT is connected with a terminal 1 of a small air switch QF, an N pin of the binding post XT is connected with a 3L2 pin of an alternating current contactor KM, and a PE pin of the binding post XT is grounded.
The small household air source heat pump unit uses a single-phase compressor, the compressor can generate rated power and moment under rated voltage to overcome the resistance of a load, when the voltage of a power grid fluctuates, the voltage is reduced, the output power and moment of a press are reduced, when the rotating moment of the press is lower than the resistance of the load, the rotating speed of the press is reduced and even stopped, and according to the characteristics of the single-phase compressor, the output power and moment of the press can be increased by increasing the operating capacitance, so that the normal operation of the press is kept.
According to the invention, the voltage relay is used for detecting the voltage of the power grid, when the voltage fluctuation is lower than a set value, the power-assisted capacitor is added, the running capacitor of the single-phase compressor is increased, the output power and the torque of the motor are increased, and the normal running of the press is ensured.
The invention comprises an alternating-current contactor, a single-phase compressor, a booster capacitor and an operation capacitor, wherein when the voltage relay is operated and the network voltage fluctuation is too low, the voltage relay controls the input of the booster capacitor.
The invention has the beneficial effects that:
according to the invention, the voltage relay is used for detecting the voltage of the power grid, when the voltage fluctuation is lower than the set value, the power-assisted capacitor is added for a certain time, the operation capacitor of the single-phase compressor is increased, the output power and the torque of the motor are increased, the normal operation of the press is ensured, and the influence of the voltage fluctuation of the power grid on a user is reduced.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a connection structure diagram of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in FIG. 1, the device capable of enabling the single-phase compressor to operate under power voltage fluctuation comprises a controller AP (SL 1628-CW), an alternating current contactor KM (EX 9CV25 1811P 220V), a voltage relay K (JX 9P-10-220V), an operating capacitor C1 (CBB 65V) and an assisting capacitor C2 (CBB 61 40V f/450 VAC), wherein a live wire L and a zero line N are respectively connected with the single-phase compressor MC through alternating current contactors, the voltage relay K (JX 9P-10-220V) is connected with the alternating current contactor KM (EX 9CV25 1811P 220V), the operating capacitor C1 (CBB 65V 80 f/450 VAC) and the assisting capacitor C2 (CBB 61V) are respectively connected with the voltage relay K (JX 9P-10-220V), the alternating current contactor KM 9CV 25P 220V and the single-phase compressor MC, and the controller AP (EX 9CV 8-220V) is connected with the alternating current contactor KM (EX 9CV 25P 1811P 220V), and the voltage of the controller AP (EX 9CV 25V) is controlled by the alternating current contactor 40V 1811P 220V when the alternating current contactor is controlled by the alternating current contactor 220V (EX 9CV 25V) and the assisting capacitor C25P 220V).
As shown in FIG. 2, the live wire L is connected to 1L1 pin of the AC contactor KM (EX 9CV25 1811 3P 220V), the neutral wire N is connected to 3L2 pin of the AC contactor KM (EX 9CV25 1811 3P 220V), 1L1 pin of the AC contactor KM (EX 9CV25 1811 3P 220V) is connected to L pin of the voltage relay K (JX 9P-10-220V), 3L2 pin of the AC contactor KM (EX 9CV25 1811P 220V) is connected to N pin of the voltage relay K (JX 9P-10-220V), 2L1 pin of the AC contactor KM (EX 9CV25 1811P 220V) is connected to R end of the single-phase compressor MC, 4L2 pin of the AC contactor KM (EX 9CV25 1811P 220V) is connected to C end of the single-phase compressor MC, terminal 2 of run capacitor C1 (CBB 65 mu f/450 VAC) is connected with the S terminal of the single-phase compressor, terminal 2 of run capacitor C1 (CBB 65 mu f/450 VAC) is also connected with terminal 2 of boost capacitor C2 (CBB 61 mu f/450 VAC), terminal 1 of boost capacitor C2 (CBB 61 mu f/450 VAC) is connected with terminal 12 of voltage relay K (JX 9P-10-220V), terminal 1 of run capacitor C1 (CBB 65 mu f/450 VAC) is also connected with terminal 11 of voltage relay K (JX 9P-10-220V), and A1 pin and A2 pin of alternating current contactor KM (EX 9CV25 1811P 220V) are respectively connected with controller AP (SL 1628-CW).
The current transformer D (SL 1808 TC) L is arranged on a wire between a terminal 1 of an operating capacitor C1 (CBB 65 mu f/450 VAC) and a 2L1 pin of an alternating current contactor KM (EX 9CV25 1811 3P 220V), and the current transformer DL (SL 1808 TC) is connected to a controller AP (SL 1628-CW).
The electric contactor also comprises a small air switch QF (EX 9B-1P-32A), wherein a live wire L is connected with a terminal 1 of the small air switch QF (EX 9B-1P-32A), and a terminal 2 of the small air switch QF (EX 9B-1P-32A) is connected with a 1L1 pin of an alternating current contactor KM (EX 9CV25 1811P 220V).
The electric power cable further comprises a wiring terminal XT (UTD-41/3P), wherein an L pin of the wiring terminal XT (UTD-41/3P) is connected with a live wire L, an N pin of the wiring terminal XT (UTD-41/3P) is connected with a zero line N, an L pin of the wiring terminal XT (UTD-41/3P) is connected with a terminal 1 of a small air switch QF (EX 9B-1P-32A), an N pin of the wiring terminal XT (UTD-41/3P) is connected with a 3L2 pin of an alternating current contactor KM (EX 9CV25 1811/3P 220V), and a PE pin of the wiring terminal XT (UTD-41/3P) is grounded.
According to the invention, the controller AP (SL 1628-CW) is used for controlling the on-off of an alternating current contactor KM (EX 9CV25 1811 3P 220V), a small air switch QF (EX 9B-1P-32A) can be used for electrical short circuit protection, a current transformer DL (SL 1808 TC) can be used for detecting load current, overload protection is carried out on the load, when an operating capacitor C1 (CBB 65 0 mu f/450 VAC) and a single-phase press MC are electrified, the system is normally started to operate, when the power grid load is overlarge and the voltage is low, the motor operation moment is reduced, the motor is stopped, when the voltage is lower than a set value (0.7-0.95) VS, a delay (0.1-10) is carried out, a voltage relay K (JX 9 JP-10-220V) acts, a power-assisted capacitor C2 (CBB 61 mu f/450) is connected to be operated in parallel with the single-phase press, and the operating moment of the single-phase press is increased to ensure the normal operation of the single-phase press when the voltage is raised. The safety and the reliability of the system operation are improved.
Claims (3)
1. An apparatus for enabling single phase compressor operation under power supply voltage fluctuations, comprising: the system comprises a host controller AP with the model number of SL1628-CW, an alternating current contactor KM with the model number of EX9CV25 1811 3P 220V, a voltage relay K with the model number of JX9JP-10-220V, an operation capacitor C1 with the model number of CBB65 80 mu f/450VAC and a boost capacitor C2 with the model number of CBB61 40 mu f/450VAC, wherein a live wire L and a null wire N are respectively connected with a single-phase compressor MC through the alternating current contactor, the voltage relay K is connected with the alternating current contactor KM, the operation capacitor C1 and the boost capacitor C2 are respectively connected with the voltage relay K, the alternating current contactor KM and the single-phase compressor MC, the controller AP is connected with the alternating current contactor KM, and the input of the boost capacitor C2 is controlled by the voltage relay K when the voltage fluctuation of a power grid is too low;
the live wire L is connected with A1L 1 pin of an alternating current contactor KM, a zero line N is connected with a 3L2 pin of the alternating current contactor KM, A1L 1 pin of the alternating current contactor KM is connected with a L pin of a voltage relay K, a 3L2 pin of the alternating current contactor KM is connected with an N pin of the voltage relay K, A2L 1 pin of the alternating current contactor KM is connected with a wiring terminal 1 of an operation capacitor C1 and an R end of a single-phase compressor MC, a 4L2 pin of the alternating current contactor KM is connected with a C end of the single-phase compressor MC, a wiring terminal 2 of the operation capacitor C1 is connected with an S end of the single-phase compressor, a wiring terminal 2 of the operation capacitor C1 is also connected with a wiring terminal 2 of a booster capacitor C2, A1 of the operation capacitor C2 is also connected with a wiring terminal 11 of the voltage relay K, and an A1 pin and an A2 pin of the alternating current contactor KM are respectively connected with a controller AP;
the device capable of enabling the single-phase compressor to operate under power voltage fluctuation further comprises a current transformer DL with the model SL1808TC, wherein the current transformer DL is arranged on a lead between a terminal 1 of an operating capacitor C1 and a 2L1 pin of an alternating current contactor KM, and the current transformer DL is connected to a controller AP.
2. The apparatus for enabling single phase compressor power supply voltage ripple operation of claim 1, wherein: the miniature electric contactor also comprises a miniature air switch QF with the model of EX9BV 1P D32, wherein a live wire L is connected with a wiring terminal 1 of the miniature air switch QF, and a wiring terminal 2 of the miniature air switch QF is connected with a 1L1 pin of an alternating current contactor KM.
3. The apparatus for enabling single phase compressor power supply voltage ripple operation of claim 1, wherein: the electric power transformer further comprises a binding post XT with the model of UTD-41/3P, wherein an L pin of the binding post XT is connected with a live wire L, an N pin of the binding post XT is connected with a zero line N, an L pin of the binding post XT is connected with a terminal 1 of a small air switch QF, an N pin of the binding post XT is connected with a 3L2 pin of an alternating current contactor KM, and a PE pin of the binding post XT is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707719.7A CN108574283B (en) | 2018-07-02 | 2018-07-02 | Device capable of operating single-phase compressor under power voltage fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707719.7A CN108574283B (en) | 2018-07-02 | 2018-07-02 | Device capable of operating single-phase compressor under power voltage fluctuation |
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| Publication Number | Publication Date |
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| CN108574283A CN108574283A (en) | 2018-09-25 |
| CN108574283B true CN108574283B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810707719.7A Active CN108574283B (en) | 2018-07-02 | 2018-07-02 | Device capable of operating single-phase compressor under power voltage fluctuation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109737296A (en) * | 2018-12-18 | 2019-05-10 | 中国神华能源股份有限公司 | Oil pump control method and device, system, storage medium, electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082439A (en) * | 2006-05-30 | 2007-12-05 | 海尔集团公司 | Air conditioner soft start-up control device |
| CN102355173A (en) * | 2011-09-23 | 2012-02-15 | 海尔集团公司 | Motor starting circuit of compressor |
| CN204928084U (en) * | 2015-08-31 | 2015-12-30 | 山东蓝帆化工有限公司 | Prevention grid fluctuation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560544B (en) * | 2013-11-22 | 2015-05-27 | 国家电网公司 | System for starting large-scale power load in micro grid |
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2018
- 2018-07-02 CN CN201810707719.7A patent/CN108574283B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082439A (en) * | 2006-05-30 | 2007-12-05 | 海尔集团公司 | Air conditioner soft start-up control device |
| CN102355173A (en) * | 2011-09-23 | 2012-02-15 | 海尔集团公司 | Motor starting circuit of compressor |
| CN204928084U (en) * | 2015-08-31 | 2015-12-30 | 山东蓝帆化工有限公司 | Prevention grid fluctuation system |
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| CN108574283A (en) | 2018-09-25 |
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