CN2817211Y - Three-phase asynchronous motor speed regulating controller and air conditioner using same - Google Patents
Three-phase asynchronous motor speed regulating controller and air conditioner using same Download PDFInfo
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- CN2817211Y CN2817211Y CNU200520062891XU CN200520062891U CN2817211Y CN 2817211 Y CN2817211 Y CN 2817211Y CN U200520062891X U CNU200520062891X U CN U200520062891XU CN 200520062891 U CN200520062891 U CN 200520062891U CN 2817211 Y CN2817211 Y CN 2817211Y
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Abstract
The utility model relates to a kind of electric machine speed regulation control field, relates in particular to a kind of Three-phase Asynchronous Machine Speed Setting Controller And Speed Regulation Method.A kind of threephase asynchronous machine speed setting controller is applied in the electromechanical equipment control system, and described electromechanical equipment control system comprises system master making sheet; Described electric machine speed regulation controller comprises that forceful electric power detects and output motor drive plate and light current control board; Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described system master making sheet; Described forceful electric power detects and the output motor drive plate has the three phase mains zero crossing function of detection and the variable motor-driven function of output voltage; Described light current control board has the function of the control bidirectional triode thyristor angle of flow.Described speed setting controller can be adjusted rotating speed of motor according to the needs of device systems.The utility model can make that motor speed can reduce under the low situation of electromechanical equipment load, with respect to motor power saving that can not speed governing.
Description
[technical field]
The utility model relates to a kind of electric machine speed regulation control field, relates in particular to a kind of threephase asynchronous machine speed setting controller.The utility model also relates to a kind of air conditioner that uses the threephase asynchronous machine speed setting controller.
[background technology]
The application of threephase asynchronous machine is very extensive, and air conditioner that daily life field touches, washing machine etc. are arranged, and at industrial circle crane, injection molding machine etc. is arranged.Existing threephase asynchronous generally all can not carry out speed governing, makes velocity interval little, is not easy to rational control appliance; As in existing air-conditioning system, the wind speed of outer blower fan is several grades that fix, velocity interval is little, and the off-premises station load can not well mate with the required load of indoor set, the heat of outdoor heat exchanger and the heat of indoor set heat exchanger, has influence on the reliability and stability of unit operation.Can speed governing also be to carry out speed governing by frequency converter because the cost of variable-frequency governor is higher, make that the cost of The whole control system of these equipment of control is too high.As everyone knows, the chopper circuit voltage-regulating speed-regulating device that is applied on the monophase machine is a kind of speed regulator cheaply, but because the operation characteristic of three-phase induction motor is subjected to the influence of load bigger, being applied in above the three-phase induction motor speed governing not also at present with the chopper control maturation.
[utility model content]
The purpose of this utility model is to provide a kind of threephase asynchronous machine chopping regulating speed controller.
Another purpose of the present utility model is to provide a kind of air conditioner that uses above-mentioned speed setting controller.
For achieving the above object, the utility model adopts following technical scheme:
A kind of threephase asynchronous machine speed setting controller is applied in the electromechanical equipment control system, and described electromechanical equipment control system comprises system master making sheet; Described electric machine speed regulation controller comprises that forceful electric power detects and output motor drive plate and light current control board; Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described system master making sheet; Described speed setting controller can be adjusted rotating speed of motor according to the needs of device systems.
Described forceful electric power detects and the output motor drive plate has the three phase mains zero crossing function of detection and the variable motor-driven function of output voltage; Described light current control board has the function of the control bidirectional triode thyristor angle of flow.
A kind of air conditioner comprises indoor set, off-premises station, master controller, and described off-premises station includes a blower fan; Described air conditioner also comprises a fan speed regulation controller, and described fan speed regulation controller comprises that forceful electric power detects and output motor drive plate and light current control board; Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described master controller; Described fan speed regulation controller is adjusted the rotating speed of described blower fan as required.Described forceful electric power detects and the output motor drive plate has the three phase mains zero crossing function of detection and the variable motor-driven function of output voltage; Described light current control board has control bidirectional triode thyristor angle of flow function.
Compared with prior art, the utility model threephase asynchronous machine speed setting controller detects the real-time zero crossing of three phase mains by the forceful electric power plate, the light current buttress is according to the zero crossing of three phase mains and the needs of system (sending by 485 bus communications), through calculating, in the regular hour, allow the controllable silicon conducting, to reach the purpose of speed governing.The utility model can make that motor speed can reduce under the low situation of electromechanical equipment load, and is with respect to motor power saving that can not speed governing, more cheap than existing variable-frequency governor again.
[description of drawings]
Fig. 1 is the speed-adjusting and control system theory diagram;
Fig. 2 is a heavy-current control plate system principle diagram;
Fig. 3 is a light current control board system principle diagram;
Fig. 4 is a speed setting controller control system FB(flow block);
[embodiment]
Introduce content of the present utility model for convenience of explanation, below the applicant by introducing the application of threephase asynchronous machine speed setting controller in air-conditioning system threephase asynchronous machine speed setting controller and speed regulating method are described.
A kind of air conditioner comprises indoor set, off-premises station, master controller, and described off-premises station includes a blower fan; Described air conditioner also comprises a fan speed regulation controller, and as shown in Figure 1, described fan speed regulation controller comprises that forceful electric power detects and output motor drive plate (can be called for short the forceful electric power plate) and light current control board (can be called for short the light current plate); Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described master controller (can pass through 485 bus communications); The data that described fan speed regulation controller transmits according to described master controller are adjusted the rotating speed of described blower fan.Described forceful electric power detects and the output motor drive plate has detection three phase mains zero crossing function and the variable blower fan of output voltage drives function; Described light current control board has control bidirectional triode thyristor angle of flow function.
Described forceful electric power detects and output motor drive plate three phase mains zero crossing measuring ability is to utilize three piezo-resistances structure power supply virtual zero points, and real-time each real-time zero crossing mutually of seizure three phase mains is achieved after rectification circuit and photoelectricity isolation.It is each angle of flow of the bidirectional triode thyristor on the drive circuit mutually of control that the blower fan that described forceful electric power detects and output motor drive plate output voltage is variable drives function, utilizes chopper circuit principle adjusting blower fan driving voltage to be achieved.
Described fan speed regulation controller has and starts at full speed (can establish for 3 seconds) after a period of time, changes the rotating speed of target operation function automatically over to.Described in addition fan speed regulation controller has communication failure and shows and the target output voltage Presentation Function.The utility model threephase asynchronous machine speed setting controller can be used in the motor of 50HZ and 60HZ frequency.
Consult Fig. 2 and shown in Figure 3, in the forceful electric power panel control system, be connected with filter circuit, rectification circuit and three-phase zero-detection circuit after the three-phase power input end successively.Filter circuit is made of 3 piezo-resistances of star-like connection, in order to avoid rectifier diode is breakdown in the higher interference environment is arranged; At three-phase power input end, utilize three pressure-sensitive explosion-proof resistance of star-like connection, improve the EMC performance of whole speed setting controller.Rectification circuit is simple diode bridge rectifier circuit, to carrying out rectification through filtered three-phase 380V voltage, sends into zero-detection circuit after the rectification.Zero-detection circuit comprises photoelectric isolating circuit, sends in the MCU unit after the forceful electric power Signal Spacing is become weak electric signal.Controllable silicon drive circuit has partly adopted and used RC circuit in parallel in silicon controlled gate pole circuit, keeping silicon controlled voltage change ratio and current changing rate in suitable scope, and can be by false triggering, conducting reliably simultaneously; It accepts the controllable silicon drive signal from the MCU unit of described light current control board, and the conducting controllable silicon is regulated rotation speed of fan.
In the light current panel control system, system power supply part is made of rectification circuit and 7805 voltage stabilizing circuits and filter circuit, makes the 220V AC power of input become the power supply that can use for the MCU unit; Described MCU unit has three PORT COM, a zero signal that is used to accept from the forceful electric power plate, and 485 bus communication modules that are used to patch with described master controller communication, another one is used to export the controllable silicon drive signal to described forceful electric power plate.Acceptance is made up of three external interrupt ports from the port of the zero signal of forceful electric power plate, and detect the zero point that is used for three-phase current, handles accordingly to produce external interrupt; In the present embodiment, described MCU unit adopts the PIC18F442 of MICROCHIP company, and SCI functional module and 485 communication IC that described communication module adopts chip to carry constitute.
As shown in Figure 4, the course of work of described fan speed regulation system is:
Judge behind startup and power-up initializing whether described light current control board is successful with described master controller communication; If successfully, read the target voltage of rotating speed of target correspondence, calculate the controllable silicon ON time; If unsuccessful, the machine that then has a power failure shows fault.Then wait for the real-time crossover point signal of three phase mains, and judge whether the real-time crossover point signal of power supply arrives, if not continuing to wait for also cycle detection; If then start and prolong the timer time-delay.Judge whether delay time equates with the target delay time, if not then cycle criterion; If, the then at full speed drive motors 3 seconds and the conducting controllable silicon that sets out, export target driven motor obtains rotating speed of target.
Can summarize a kind of speed regulating method of threephase asynchronous machine speed setting controller by the above-mentioned course of work, comprise:
The first step:, calculate the target voltage of needed rotating speed of target correspondence according to the needs of device systems;
Second step:, calculate target three-phase controllable silicon angle of flow delay time (target delay time) by the light current control board according to target voltage;
The 3rd step: forceful electric power detects each the real-time mutually zero crossing that detects three phase mains with the output motor drive plate;
The 4th step: start time-delay according to the 3rd real-time zero crossing that goes on foot the three phase mains that obtains, when delay time equated with the target delay time, the output driving pulse was to motor-driven plate conducting controllable silicon.
The 5th step: continue the triggering and conducting controllable silicon and turn-off controllable silicon up to the natural zero-crossing point that utilizes three phase mains, export target driven motor obtains rotating speed of target.
The utility model is an example by the speed regulating control with the outer blower fan of air conditioner, has introduced threephase asynchronous machine speed setting controller and speed regulating method, and this can not be considered to the restriction to the utility model claim.If those skilled in the art has made change unsubstantiality, conspicuous or improvement according to the utility model, all should belong to the scope of the utility model claim protection.
Claims (10)
1, a kind of threephase asynchronous machine speed setting controller is applied in the electromechanical equipment control system, and described electromechanical equipment control system comprises system master making sheet; Described electric machine speed regulation controller comprises that forceful electric power detects and output motor drive plate and light current control board; Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described system master making sheet; Described speed setting controller can be adjusted rotating speed of motor according to the needs of device systems.
2, threephase asynchronous machine speed setting controller according to claim 1 is characterized in that: described forceful electric power detects and the output motor drive plate has the three phase mains zero crossing function of detection and the variable motor-driven function of output voltage; Described light current control board has the function of the control bidirectional triode thyristor angle of flow.
3, threephase asynchronous machine speed setting controller according to claim 2, it is characterized in that: described forceful electric power detects and output motor drive plate three phase mains zero crossing measuring ability is to utilize three piezo-resistances structure power supply virtual zero points, and real-time each real-time zero crossing mutually of seizure three phase mains is achieved after rectification circuit and photoelectricity isolation.
4, threephase asynchronous machine speed setting controller according to claim 2, it is characterized in that: described forceful electric power detects and the variable motor-driven function of the output voltage of output motor drive plate is by controlling each angle of flow of the bidirectional triode thyristor on the drive circuit mutually, utilizing chopper circuit principle adjusting motor driven voltage.
5, threephase asynchronous machine speed setting controller according to claim 2 is characterized in that: in described forceful electric power detection and output motor drive plate, be connected with filter circuit, rectification circuit and three-phase zero-detection circuit after the three-phase power input end successively; Described filter circuit is made of 3 piezo-resistances of star-like connection; Rectification circuit is simple diode bridge rectifier circuit; Described zero-detection circuit comprises photoelectric isolating circuit, sends in the MCU unit after the forceful electric power Signal Spacing is become weak electric signal.
6, threephase asynchronous machine speed setting controller according to claim 2, it is characterized in that: described forceful electric power detects and the output motor drive plate also comprises controllable silicon drive circuit, and described controllable silicon drive circuit has used RC circuit in parallel in silicon controlled gate pole circuit; Its acceptance of described controllable silicon drive circuit is from the controllable silicon drive signal of the MCU unit of described light current control board, and the conducting controllable silicon is regulated motor speed.
7, threephase asynchronous machine speed setting controller according to claim 2 is characterized in that: in the light current control board, comprise system power supply, MCU unit and communication module; Described MCU unit comprises three external interrupt ports, and detect the zero point that is used for three-phase current, handles accordingly to produce external interrupt.
8, according to any one described threephase asynchronous machine speed setting controller of claim 1 to 7, it is characterized in that: described speed setting controller changes the rotating speed of target operation function over to after having startup at full speed automatically.
9, according to any one described threephase asynchronous machine speed setting controller of claim 1 to 7, it is characterized in that described electromechanical equipment is an air conditioner.
10, a kind of air conditioner comprises indoor set, off-premises station, master controller, and described off-premises station includes a blower fan; It is characterized in that described air conditioner also comprises a fan speed regulation controller, described fan speed regulation controller comprises that forceful electric power detects and output motor drive plate and light current control board; Described forceful electric power detects and output motor drive plate and the mutual communication of described light current control board; Described light current control board and the mutual communication of described master controller; Described fan speed regulation controller is adjusted the rotating speed of described blower fan as required; Described forceful electric power detects and the output motor drive plate has the three phase mains zero crossing function of detection and the variable motor-driven function of output voltage; Described light current control board has control bidirectional triode thyristor angle of flow function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520062891XU CN2817211Y (en) | 2005-08-15 | 2005-08-15 | Three-phase asynchronous motor speed regulating controller and air conditioner using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520062891XU CN2817211Y (en) | 2005-08-15 | 2005-08-15 | Three-phase asynchronous motor speed regulating controller and air conditioner using same |
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| Publication Number | Publication Date |
|---|---|
| CN2817211Y true CN2817211Y (en) | 2006-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520062891XU Expired - Lifetime CN2817211Y (en) | 2005-08-15 | 2005-08-15 | Three-phase asynchronous motor speed regulating controller and air conditioner using same |
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| CN (1) | CN2817211Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369376C (en) * | 2005-08-15 | 2008-02-13 | 珠海格力电器股份有限公司 | Three-phase asynchronous motor actiyator and its speed regulation method, air conditioner using the same |
| CN106802632A (en) * | 2015-11-26 | 2017-06-06 | 韩正强 | Split modular drive control device based on controllable silicon |
-
2005
- 2005-08-15 CN CNU200520062891XU patent/CN2817211Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369376C (en) * | 2005-08-15 | 2008-02-13 | 珠海格力电器股份有限公司 | Three-phase asynchronous motor actiyator and its speed regulation method, air conditioner using the same |
| CN106802632A (en) * | 2015-11-26 | 2017-06-06 | 韩正强 | Split modular drive control device based on controllable silicon |
| CN106802632B (en) * | 2015-11-26 | 2020-09-08 | 韩正强 | Split modular drive controller based on controllable silicon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080213 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080213 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |