CN105156312B - fixed-frequency compressor starting circuit and starting method - Google Patents
fixed-frequency compressor starting circuit and starting method Download PDFInfo
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- CN105156312B CN105156312B CN201510585375.3A CN201510585375A CN105156312B CN 105156312 B CN105156312 B CN 105156312B CN 201510585375 A CN201510585375 A CN 201510585375A CN 105156312 B CN105156312 B CN 105156312B
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- Prior art keywords
- frequency compressor
- invariable frequency
- compressor
- invariable
- soft
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003999 initiator Substances 0.000 claims description 26
- 230000003111 delayed effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a starting circuit and a starting method of a fixed-frequency compressor. The starting method of the fixed-frequency compressor comprises the following steps: starting a fixed-frequency compressor (2); carrying out soft start on the fixed-frequency compressor (2) by utilizing the slope voltage; after the constant-frequency compressor (2) reaches the rated voltage, the constant-frequency compressor (2) is operated at full pressure through the bypass circuit (5). According to the starting method of the fixed-frequency compressor, the starting stress of the exhaust pipe and the suction pipe can be reduced, and the reliability of the compressor is improved.
Description
Technical field
The present invention relates to Compressor Technology field, in particular to a kind of invariable frequency compressor start-up circuit and startup side
Method.
Background technology
What existing air energy thermal water dispenser group used has invariable frequency compressor and frequency-changeable compressor.When being started using invariable frequency compressor
For direct full voltage starting, for low-frequency start when using the frequency-changeable compressor to start.
Because motor supply voltage is rated voltage during the direct full voltage starting of invariable frequency compressor, torque caused by its moment compared with
Greatly, vibration is very big when causing compressor start, so as to excite blast pipe and air intake duct to start stress exceeded, if long-term use of,
The easy fatigue fracture of pipeline, makes unit fail；And electric current is 4-7 times of rated current when starting, excessive starting current meeting
Electrical machinery life is reduced, while the normal use of miscellaneous equipment in same power supply network can be influenceed
Frequency-changeable compressor frequency reducing startup is more steady, and vibration is smaller, but the special frequency-changeable compressor of heat pump is few at present, into
This costliness, be not suitable for promoting the use of for heat pump water-heating machine.
The content of the invention
A kind of invariable frequency compressor start-up circuit and startup method are provided in the embodiment of the present invention, blast pipe and suction can be reduced
The startup stress of tracheae, improve the reliability of compressor.
To achieve the above object, the embodiment of the present invention provides a kind of invariable frequency compressor startup method, including：Start fixed frequency to press
Contracting machine；Soft start is carried out to invariable frequency compressor using ramp voltage；After invariable frequency compressor reaches rated voltage, pass through bypass
Circuit runs invariable frequency compressor total head.
Preferably, the step of carrying out soft start to invariable frequency compressor using ramp voltage includes：Opened in invariable frequency compressor
After dynamic, connect compressor A.C. contactor, and delayed startup ramp voltage is powered to invariable frequency compressor.
Preferably, the step of carrying out soft start to invariable frequency compressor using ramp voltage also includes：Electric current is set to pass through crystalline substance
Brake tube is powered to invariable frequency compressor, in power supply process, is controlled the angle of flow of IGCT gradually to increase from initial value, is determined motor
Sub- terminal voltage is gradually increased to rated voltage.
Preferably, bypass resistance is in parallel with IGCT.
Also include preferably, invariable frequency compressor starts method：Soft initiator is accessed in invariable frequency compressor start-up circuit,
Ramp voltage is provided from soft initiator to invariable frequency compressor.
According to another aspect of the present invention, there is provided a kind of invariable frequency compressor start-up circuit, including：Invariable frequency compressor；Electricity
Source；Soft initiator, it is arranged on the circuit between invariable frequency compressor and power supply, to control invariable frequency compressor soft start.
Preferably, soft initiator includes IGCT and the bypass resistance in parallel with IGCT, it is provided with bypass resistance
Switch.
Preferably, invariable frequency compressor start-up circuit also includes A.C. contactor and controls prolonging for soft initiator delayed startup
When relay, A.C. contactor and time-delay relay series connection.
Apply the technical scheme of the present invention, invariable frequency compressor, which starts method, to be included：Start invariable frequency compressor；Utilize slope electricity
Pressure carries out soft start to invariable frequency compressor；After invariable frequency compressor reaches rated voltage, compress fixed frequency by bypass resistance
Machine total head is run.Because invariable frequency compressor is by ramp voltage progress soft start, the direct total head of invariable frequency compressor can be avoided to open
Vibration is big when dynamic, so as to cause blast pipe and air intake duct to start the problem of stress is exceeded, ensure compressor voltage it is electrodeless it is steady on
Rise, improve product reliability.
Brief description of the drawings
Fig. 1 is that the invariable frequency compressor of the embodiment of the present invention starts the flow chart of method；
Fig. 2 is the structure chart of the invariable frequency compressor start-up circuit of the embodiment of the present invention.
Description of reference numerals：1st, power supply；2nd, invariable frequency compressor；3rd, soft initiator；4th, IGCT；5th, bypass resistance；6th, hand over
Flow contactor；7th, switch；8th, time-delay relay.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as the limit to the present invention
It is fixed.
Shown in Figure 1, according to an embodiment of the invention, invariable frequency compressor, which starts method, to be included：Start invariable frequency compressor
2；Soft start is carried out to invariable frequency compressor 2 using ramp voltage；After invariable frequency compressor 2 reaches rated voltage, pass through bypass
Circuit 5 runs the total head of invariable frequency compressor 2.
Because invariable frequency compressor by ramp voltage carries out soft start, when can avoid the direct full voltage starting of invariable frequency compressor
Vibration is big, so as to cause blast pipe and air intake duct to start the problem of stress is exceeded, ensures that compressor voltage is electrodeless and steadily rises, carry
High product reliability.
The step of carrying out soft start to invariable frequency compressor 2 using ramp voltage includes：After invariable frequency compressor startup, make pressure
Contracting machine A.C. contactor 6 is connected, and delayed startup ramp voltage is powered to invariable frequency compressor 2.
The step of carrying out soft start to invariable frequency compressor 2 using ramp voltage also includes：Make electric current by IGCT 4 to fixed
Frequency compressor 2 is powered, and in power supply process, the angle of flow of control IGCT 4 gradually increases from initial value, makes motor stator end electric
Pressure is gradually increased to rated voltage.Can be with output linearity voltage by IGCT 4 so that magnitude of voltage can be stepped up determining frequency
The rated voltage of compressor 2, make the start-up course of invariable frequency compressor 2 steady, the stress very little of unit blast pipe and air intake duct, keep away
The risk of pipeline fatigue fracture is exempted from.
Bypass resistance 5 is in parallel with IGCT 4, and in running order in IGCT 4 and invariable frequency compressor 2 operating voltage is not
When reaching rated voltage, bypass resistance 5 disconnects, and electric current need to pass through IGCT 4 and flow into invariable frequency compressor 2, ensure that and determine frequency pressure
The operating voltage of contracting machine 2 is stepped up by the control of IGCT 4, improves the startup stationarity of invariable frequency compressor 2.Determining frequency
After compressor 2 reaches rated voltage, bypass resistance 4 is connected so that circuit is switched to bypass resistance, can avoid IGCT 4
It is long-term to obtain electric overheat and influence service life.
Invariable frequency compressor, which starts method, also to be included：Soft initiator 3 is accessed in invariable frequency compressor start-up circuit, by soft start
Device 3 provides ramp voltage to invariable frequency compressor 2.By adding soft initiator 3 in the start-up circuit of invariable frequency compressor 2, so that it may
It is stepped up with the voltage for easily controlling invariable frequency compressor 2 by soft initiator so that invariable frequency compressor 2 can realize soft open
It is dynamic, start voltage and be stepped up, reduce blast pipe and air intake duct starts stress, avoid pipeline fatigue during unit long-term use from breaking
Split, improve the reliability of unit.
The start-up course of invariable frequency compressor 2 is as follows：On unit after electricity, mainboard controller receives the start letter of line control machine
Number, obtain compressor A.C. contactor KM1 coils electric, coil obtain it is electric after adhesive KM1 major loops contact, while A.C. contactor
KM1 auxiliary contact close, so that KT obtains electric, adhesive KT contacts after delay, so that soft initiator obtains electric work, electric current first leads to
IGCT loop in soft initiator is crossed, the angle of flow of work time control combinations brake tube gradually increases from initial value, makes motor stator end
Voltage is gradually increased to rated voltage, therefore whole start-up course is steady, the stress very little of unit blast pipe and air intake duct, avoids
The risk of pipeline fatigue fracture, complete after starting, soft initiator is switched to bypass circulation, avoid IGCT long-term electric overheat
And influence the life-span.
Soft initiator controls the startup of compressor by the startup time and initial start-up voltage of setting, starts time and just
Beginning startup voltage can be set scope in soft initiator according to actual use situation and be configured, and can be selected in test process
Take out optimal startup time and initial voltage.
According to an embodiment of the invention, invariable frequency compressor start-up circuit includes：Invariable frequency compressor 2；Power supply 1；Soft initiator
3, it is arranged on the circuit between invariable frequency compressor 2 and power supply 1, to control the soft start of invariable frequency compressor 2.
Soft initiator 3 is arranged between power supply 1 and invariable frequency compressor 2, can be by soft when invariable frequency compressor 2 starts
Starter 3 carries out soft start to invariable frequency compressor 2, utilizes ramp voltage soft starting mode, control invariable frequency compressor 2 stator terminal electricity
Pressure, output linearity change voltage, electrodeless steady rising, avoid full voltage starting moment vibration of compressor caused by torque is excessive excessive
The problem of.
Soft initiator 3 includes IGCT 4 and the bypass resistance 5 in parallel with IGCT 4, and switch is provided with bypass resistance 5
7.IGCT 4 can ensure the voltage of the stable output linearity change of soft initiator 3, ensure that the steady low pressure of invariable frequency compressor 2 opens
It is dynamic, effectively reduce blast pipe and air intake duct starts stress.
Invariable frequency compressor start-up circuit also includes A.C. contactor 6 and controls the delay relay of the delayed startup of soft initiator 3
Device 8, A.C. contactor 6 and time-delay relay 8 are connected.Time-delay relay 8 is connected with A.C. contactor 6, is connected in A.C. contactor 6
It after logical, just can connect time-delay relay 8, and then start soft initiator 3, startup time that can be to soft initiator 3 and just
Beginning voltage is controlled, so as to choose optimal startup time and initial voltage so that the startup of invariable frequency compressor 2 is realized optimal
Change.
Certainly, above is the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art
For, on the premise of its general principles are not departed from, some improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of invariable frequency compressor starts method, it is characterised in that including：
Start invariable frequency compressor (2)；
Soft start is carried out to invariable frequency compressor (2) using ramp voltage；Including：After invariable frequency compressor startup, make compression
Machine A.C. contactor (6) is connected, and delayed startup ramp voltage is powered to invariable frequency compressor (2)；
After invariable frequency compressor (2) reaches rated voltage, run invariable frequency compressor (2) total head by bypass resistance (5).
2. invariable frequency compressor according to claim 1 starts method, it is characterised in that described to utilize ramp voltage to determining frequency
The step of compressor (2) progress soft start, also includes：Electric current is powered by IGCT (4) to invariable frequency compressor (2), powering
During, the angle of flow of control IGCT (4) gradually increases from initial value, motor stator terminal voltage is gradually increased to specified electricity
Pressure.
3. invariable frequency compressor according to claim 2 starts method, it is characterised in that bypass resistance (5) and IGCT (4)
It is in parallel.
4. invariable frequency compressor according to claim 1 starts method, it is characterised in that the invariable frequency compressor starts method
Also include：Soft initiator (3) is accessed in invariable frequency compressor start-up circuit, is provided from soft initiator (3) to invariable frequency compressor (2)
Ramp voltage.
A kind of 5. invariable frequency compressor start-up circuit, it is characterised in that including：
Invariable frequency compressor (2)；
Power supply (1)；
Soft initiator (3), it is arranged on the circuit between the invariable frequency compressor (2) and the power supply (1), it is described fixed to control
Frequency compressor (2) soft start；
A.C. contactor (6)；
Control the time-delay relay (8) of soft initiator (3) delayed startup；Wherein, the A.C. contactor (6) and it is described delay after
Electrical equipment (8) is connected.
6. invariable frequency compressor start-up circuit according to claim 5, it is characterised in that the soft initiator (3) includes crystalline substance
Brake tube (4) and the bypass resistance (5) in parallel with the IGCT (4), switch (7) is provided with the bypass resistance (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585375.3A CN105156312B (en) | 2015-09-15 | 2015-09-15 | fixed-frequency compressor starting circuit and starting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585375.3A CN105156312B (en) | 2015-09-15 | 2015-09-15 | fixed-frequency compressor starting circuit and starting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156312A CN105156312A (en) | 2015-12-16 |
| CN105156312B true CN105156312B (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510585375.3A Expired - Fee Related CN105156312B (en) | 2015-09-15 | 2015-09-15 | fixed-frequency compressor starting circuit and starting method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712638A (en) * | 2017-01-16 | 2017-05-24 | 上海费亚泰克工业设备制造有限公司 | Thyristor online operation screw pneumatic engine energy saving drive controller |
| CN108204696A (en) * | 2017-11-28 | 2018-06-26 | 珠海格力电器股份有限公司 | Compressor control method, device and system, storage medium and processor |
| CN108750528A (en) * | 2018-06-08 | 2018-11-06 | 天津诺泰克传动技术有限公司 | A kind of motorized pulleys gently started |
| CN109579388B (en) * | 2018-11-23 | 2021-02-05 | Tcl空调器(中山)有限公司 | Compressor soft start control circuit and method and air conditioner |
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|---|---|---|---|---|
| CN2907083Y (en) * | 2006-04-05 | 2007-05-30 | 北京中科信电子装备有限公司 | Soft starter for high power industrial frequency transformer |
| CN202153717U (en) * | 2011-08-09 | 2012-02-29 | 德阳市库伦电气有限公司 | Soft starter used for compressor motor |
| CN202757272U (en) * | 2012-09-13 | 2013-02-27 | 江苏天舒电器有限公司 | Novel high-power single-phase heat pump water heater star control device |
| CN203135768U (en) * | 2012-08-09 | 2013-08-14 | 云南省曲靖双友钢铁有限公司 | Solid state soft starting positive and reverse rotation control circuit of high power motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002144858A (en) * | 2000-11-10 | 2002-05-22 | Denso Corp | Compression equipment for vehicular air conditioner |
| KR100819617B1 (en) * | 2006-12-29 | 2008-04-04 | 캐리어 주식회사 | Airconditioner compressor with softstarter |
| CN201518467U (en) * | 2009-10-27 | 2010-06-30 | 广东志高空调有限公司 | Single-phase motor soft starter and air conditioner with same |
| CN202056055U (en) * | 2011-01-20 | 2011-11-30 | 上海康可尔压缩机有限公司 | Intelligent microcomputer control system of screw compressor |
| CN203278716U (en) * | 2013-05-23 | 2013-11-06 | Tcl空调器(中山)有限公司 | Compressor soft-start control circuit and air conditioner |
-
2015
- 2015-09-15 CN CN201510585375.3A patent/CN105156312B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907083Y (en) * | 2006-04-05 | 2007-05-30 | 北京中科信电子装备有限公司 | Soft starter for high power industrial frequency transformer |
| CN202153717U (en) * | 2011-08-09 | 2012-02-29 | 德阳市库伦电气有限公司 | Soft starter used for compressor motor |
| CN203135768U (en) * | 2012-08-09 | 2013-08-14 | 云南省曲靖双友钢铁有限公司 | Solid state soft starting positive and reverse rotation control circuit of high power motor |
| CN202757272U (en) * | 2012-09-13 | 2013-02-27 | 江苏天舒电器有限公司 | Novel high-power single-phase heat pump water heater star control device |
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| CN105156312A (en) | 2015-12-16 |
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Granted publication date: 20180213 |