CN208353248U - A kind of single-phase frequency changer circuit - Google Patents
A kind of single-phase frequency changer circuit Download PDFInfo
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- CN208353248U CN208353248U CN201820653848.8U CN201820653848U CN208353248U CN 208353248 U CN208353248 U CN 208353248U CN 201820653848 U CN201820653848 U CN 201820653848U CN 208353248 U CN208353248 U CN 208353248U
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Abstract
A kind of single-phase frequency changer circuit, including frequency converter, there are two input terminal and two output ends for the frequency converter tool, it is characterised in that: the first output termination inductance first end of the frequency converter, inductance second end and frequency converter second output terminal are the output end of this system.The inductance second end and frequency converter second output terminal connect the first control contactor moving contact, and the second control contactor moving contact connects power end, the first control contactor and the second control contactor static contact correspondence and connects.Its advantage is that monophase machine and compressor variable frequency starting and speed variable operation, whole energy efficiency can be made to can achieve 20%~40%；Motor is set to realize soft start and stop, start/stop of compressor number reduces 70%, extends the service life of motor and compressor.
Description
Technical field
The utility model relates to change the AC power Input transformation of frequency as AC power output, a kind of single-phase change is refered in particular to
Frequency circuit.
Background technique
As shown in Fig. 2, original load motor and compressor realize the list of motor and compressor by start-up capacitance
Mutually determine frequency run, frequency control can not be carried out by being directly connected to frequency converter.Currently there are a large amount of monophase machines
And compressor, it is largely used in room air conditioner and base station air conditioner precision air conditioner etc., due to traditional design, motor is long-term
Start-up and shut-down control mode is operated in, operation energy consumption is higher.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of single-phase frequency changer circuits.It is intended to provide
A kind of monophase machine and compressor of air conditioner variable frequency starting and energy-saving run circuit, make monophase machine and compressor reach speed variable
Operation.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of single-phase frequency changer circuit is provided, including
Frequency converter, there are two input terminal and two output ends for the frequency converter tool, it is characterised in that: the first output end of the frequency converter
Inductance first end is connect, inductance second end and frequency converter second output terminal are the output end of this system.
In air conditioner control, blower motor or the original line of compressor electric motor are connected to the inductance second end, by wind
Electromechanical machine and the original line of compressor are connected to frequency converter end.It can be by monophase machine converting operation.
Further:
The inductance second end and frequency converter second output terminal connect the first control contactor moving contact, the second control contactor
Moving contact connects power end, the first control contactor and the second control contactor static contact correspondence and connects.
Foregoing circuit can be used for the frequency control of single-phase air conditioner.
The beneficial effects of the utility model are: monophase machine and compressor variable frequency starting and speed variable operation can be made, it is whole
Energy-saving efficiency can achieve 20%~40%；Motor is set to realize soft start and stop, start/stop of compressor number reduces 70%, extends motor
With the service life of compressor.
Detailed description of the invention
The utility model will be further described with reference to the accompanying drawing.
Fig. 1 is the electrical structure schematic illustration of the utility model.
Fig. 2 is the monophase machine control circuit schematic illustration of the prior art.
Specific embodiment
Referring to Fig. 1, a kind of single-phase frequency changer circuit of the utility model, including frequency converter JNV, the frequency converter JNV have two
A input terminal L, N and two output ends U, V, it is characterised in that: the first output end U of the frequency converter JNV connects inductance 1 first
End, 1 second end of inductance and frequency converter JNV second output terminal V are the output end of this system.
In air conditioner control, the original L line of blower motor M1 or compressor electric motor M2 is connected to the inductance 1 second
End, is connected to the end frequency converter V for blower motor and the original N line of compressor.It can be by monophase machine M1 and M2 converting operation.
In the embodiments of the present invention:
1 second end of inductance and frequency converter second output terminal V connect the first control contactor KM1 moving contact, the second control
Contactor KM2 moving contact meets electric power L, N-terminal, and the first control contactor KM1 and the second control contactor KM2 static contact are corresponding simultaneously
It connects.
Wiring is as shown in Figure 1: when the utility model uses in air-conditioning
1) compressor electric motor starts:
Frequency converter U, V start to export, and after compressor M2 and motor M1 enabling signal reach, reach in frequency converter frequency output
20Hz (parameter setting) or frequency converter reach predetermined power (parameter setting), compressor electric motor power frequency startup contactor closure,
After compressor rotary speed reaches rotating speed of target, for frequency converter power frequency for electrically disconnected, compressor electric motor is inverter supply operation, motor
Start-up course terminates.
2) motor operates:
Only U, V output, the series inductance in U phase realize that compressor electric motor steadily operates, according to different frequency to frequency converter
Frequency conversion operating is realized in output.
3) motor stops:
Frequency converter U, V stop output, and compressor electric motor conversion power supply contactor disconnects.
By series inductance 1 in frequency converter INV output end U phase, frequency converter is set to export stable sine wave, to make single-phase
It can smoothly be run in the case where compression function inverter supply, and realize the adjustable single-phase air-conditioning to make original frequency of revolving speed
Fulfillment capability can step-less adjustment.
By power frequency startup compressor, after revolving speed reaches rotating speed of target, it is switched to conversion power supply, to realize
The normal starting of single-phase compressor.
It is changed to converting operation, motor is opened from original after connecting frequency converter by the circuit modification to monophase machine
Stop controlling, is changed to stepless variable frequency adjustment mode.For long-term running base station air conditioner blower, compressor, blower motor are real
Existing variable frequency adjustment.
Section when the compressor is operating, due to before it is original control be motor start-up and shut-down control, be changed to variable frequency adjustment mode it
Afterwards, compressor refrigeration circular flow is in sub-load mode, the available raising of refrigeration system COP；When compressor is out of service
Period, the fan operation mode of base station air conditioner are changed to stepless variable frequency adjustment mode by longtime running mode before, can be with
According to the load of computer room, rotation speed of fan is adjusted by frequency conversion, realizes variable air volume running, realizes Fan Energy-saving.
Claims (1)
1. a kind of single-phase frequency changer circuit, including frequency converter, there are two input terminal and two output ends, features for the frequency converter tool
Be: the first output termination inductance first end of the frequency converter, inductance second end and frequency converter second output terminal are this system
Output end, the inductance second end and frequency converter second output terminal connect the first control contactor moving contact, the second control contact
Device moving contact connects power end, the first control contactor and the second control contactor static contact correspondence and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653848.8U CN208353248U (en) | 2018-05-04 | 2018-05-04 | A kind of single-phase frequency changer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653848.8U CN208353248U (en) | 2018-05-04 | 2018-05-04 | A kind of single-phase frequency changer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208353248U true CN208353248U (en) | 2019-01-08 |
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ID=64886821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820653848.8U Active CN208353248U (en) | 2018-05-04 | 2018-05-04 | A kind of single-phase frequency changer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208353248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260607A (en) * | 2020-11-03 | 2021-01-22 | 儒竞艾默生环境优化技术（上海）有限公司 | Motor driver, motor speed control method and control system |
-
2018
- 2018-05-04 CN CN201820653848.8U patent/CN208353248U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260607A (en) * | 2020-11-03 | 2021-01-22 | 儒竞艾默生环境优化技术（上海）有限公司 | Motor driver, motor speed control method and control system |
| WO2022095575A1 (en) * | 2020-11-03 | 2022-05-12 | 上海儒竞智控技术有限公司 | Motor driver, and motor speed control method and control system |
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