CN207184370U - A kind of single-phase alternating current motor control circuit - Google Patents
A kind of single-phase alternating current motor control circuit Download PDFInfo
- Publication number
- CN207184370U CN207184370U CN201721268599.2U CN201721268599U CN207184370U CN 207184370 U CN207184370 U CN 207184370U CN 201721268599 U CN201721268599 U CN 201721268599U CN 207184370 U CN207184370 U CN 207184370U
- Authority
- CN
- China
- Prior art keywords
- triode thyristor
- bidirectional triode
- resistance
- electric capacity
- motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of single-phase alternating current motor control circuit, including Micro-processor MCV, solid-state relay U1 is formed by light emitting diode LDE1 and bidirectional triode thyristor Q2, resistance R1, resistance R2, bidirectional triode thyristor Q1, electric capacity C1, Micro-processor MCV direct drive solid-state relay U1, the resistance R1 connects with light emitting diode LDE1, resistance R2 connects with bidirectional triode thyristor Q2, bidirectional triode thyristor Q1 and resistance R2, bidirectional triode thyristor Q2 is in parallel, bidirectional triode thyristor Q1 is in parallel with electric capacity C1, the electric capacity C1 is connected between bidirectional triode thyristor Q1 and load motor MOTOR AC；The utility model is simple in construction, reasonable in design, reduction motor produces electromagnetism harmonic wave and shake, reduces loss.
Description
Technical field
It the utility model is related to a kind of single-phase alternating current motor control circuit.
Background technology
Traditional single-phase alternating current motor control circuit, because alternating current generator starting current is (general for the several times of rated current
It is 3-5 times), the relay of larger capacity is needed to use to drive, and long-term start-stop can cause relay drive circuit to lose
Effect, cause immeasurable consequence, for another need to alternating current generator carry out speed governing, it is necessary to be sealed between relay and motor adjustable
Resistance, equally cause to be lost, although what is risen in recent years can improve the failure of relay using controllable silicon chopping regulating speed mode
The loss problem of problem and resistance.But at the same time chopping regulating speed also brings the problem of new：Because motor belongs to inductive load,
Chopping regulating speed causes the increase of supply harmonic amplitude, and electromagnetic noise increases, and causes the control system of whole motor to complicate.
The content of the invention
The purpose of this utility model be to provide it is a kind of it is simple in construction, reasonable in design, reduce motor produce electromagnetism harmonic wave and
Shake, drop low-loss single-phase alternating current motor control circuit.
Technical scheme is used by the utility model solves its technical problem：
A kind of single-phase alternating current motor control circuit, including Micro-processor MCV, by light emitting diode LDE1 and bidirectional triode thyristor
Q2 composition solid-state relays U1, resistance R1, resistance R2, bidirectional triode thyristor Q1, electric capacity C1, Micro-processor MCV direct drive solid-state
Relay U1, the resistance R1 connect with light emitting diode LDE1, and resistance R2 connects with bidirectional triode thyristor Q2, bidirectional triode thyristor Q1
In parallel with resistance R2, bidirectional triode thyristor Q2, bidirectional triode thyristor Q1 is in parallel with electric capacity C1, the electric capacity C1 be connected on it is two-way controllable
Between silicon Q1 and alternating current generator MOTOR AC, the electric capacity C1 plays a part of limiting electric current and will not consume any energy.
The beneficial effects of the utility model are：It is the utility model structure structure, reasonable in design, mainly by Micro-processor MCV,
Solid-state relay U1, resistance R1, resistance R2, bidirectional triode thyristor Q1, electricity are formed by light emitting diode LDE1 and bidirectional triode thyristor Q2
Hold C1 to form.Speed governing is carried out to load motor MOTOR AC using bidirectional triode thyristor Q1 series capacitances C1, substituted traditional
Control mode, optimize generation electromagnetism harmonic wave and the shake of motor, reduce loss.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Referring to Fig. 1, a kind of single-phase alternating current motor control circuit, including Micro-processor MCV, by light emitting diode LDE1 and double
It is direct to controllable silicon Q2 composition solid-state relays U1, resistance R1, resistance R2, bidirectional triode thyristor Q1, electric capacity C1, Micro-processor MCV
Solid-state relay U1, the resistance R1 is driven to be connected with light emitting diode LDE1, resistance R2 connects with bidirectional triode thyristor Q2, two-way
Controllable silicon Q1 is in parallel with resistance R2, bidirectional triode thyristor Q2, and bidirectional triode thyristor Q1 is in parallel with electric capacity C1, and the electric capacity C1 is to be connected on
Between bidirectional triode thyristor Q1 and load motor MOTOR AC, the electric capacity C1 plays a part of limiting electric current and will not consumed
Any energy.The Micro-processor MCV direct drive solid-state relay U1, the input current that general Micro-processor MCV allows
Bigger than exporting, because Micro-processor MCV is internally integrated zero cross detection circuit, only at zero crossing and Micro-processor MCV provides
During Continuity signal, solid-state relay U1 output can just turn on, and at this time Micro-processor MCV carries to bidirectional triode thyristor Q1 grid
For driving current, resistance R2 effect is exactly to limit grid current, and so as to drive bidirectional triode thyristor Q1 to turn on, electric capacity C1 is series connection
Electric capacity between bidirectional triode thyristor Q1 and load motor MOTOR AC, due to the presence of capacitive reactance, play limitation electric current
Effect, and any energy will not be consumed；When Micro-processor MCV provides cut-off signals, Micro-processor MCV will not close immediately
It is disconnected, but just turned off until next zero crossing arrives, after Micro-processor MCV shut-off, stop giving bidirectional triode thyristor Q1 immediately
Gate drive current is provided, next zero crossing comes interim, bidirectional triode thyristor Q1 shut-offs, motor stopping；Therefore electricity can be avoided
Influence of the caused dash current to control circuit in machine shutdown process.Existing load motor alignment circuit, general MCU
I/O port driving force it is weak, relay can not be directly driven, Normal practice is：MCU controls triode Q1 break-makes, after Q1 conductings,
Relay coil forms loop, produces magnetic force triggering contact action drives motor, according to required different motor speeds, after
The resistance R4's, R4 of different resistances of being connected between electrical equipment and motor act as limitation electric current, partial pressure.This patent utilizes controllable silicon string
Connection electric capacity replaces traditional relay series resistance mode of speed regulation, on the basis of original performance is kept, reduces loss, reduces member
The margin parameter of device, strengthen the reliability of product, substantially reduce the cost of device, optimal control effect.
Claims (1)
- A kind of 1. single-phase alternating current motor control circuit, it is characterised in that：Including microprocessor（MCU）, by light emitting diode （LDE1）And bidirectional triode thyristor（Q2）Form solid-state relay（U1）, resistance（R1）, resistance（R2）, bidirectional triode thyristor（Q1）, electricity Hold（C1）, microprocessor（MCU）Directly drive solid-state relay（U1）, the resistance（R1）With light emitting diode（LDE1）String Connection, resistance（R2）With bidirectional triode thyristor（Q2）Series connection, bidirectional triode thyristor（Q1）With resistance（R2）, bidirectional triode thyristor（Q2）Parallel connection, Bidirectional triode thyristor（Q1）With electric capacity（C1）Parallel connection, the electric capacity（C1）It is to be connected on bidirectional triode thyristor（Q1）And load motor （MOTOR AC）Between, the electric capacity（C1）Play a part of limiting electric current and any energy will not be consumed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268599.2U CN207184370U (en) | 2017-09-29 | 2017-09-29 | A kind of single-phase alternating current motor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268599.2U CN207184370U (en) | 2017-09-29 | 2017-09-29 | A kind of single-phase alternating current motor control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184370U true CN207184370U (en) | 2018-04-03 |
Family
ID=61748630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721268599.2U Expired - Fee Related CN207184370U (en) | 2017-09-29 | 2017-09-29 | A kind of single-phase alternating current motor control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786597A (en) * | 2020-07-01 | 2020-10-16 | 厦门鼎安电子有限公司 | Speed regulating method for AC single-phase motor |
-
2017
- 2017-09-29 CN CN201721268599.2U patent/CN207184370U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786597A (en) * | 2020-07-01 | 2020-10-16 | 厦门鼎安电子有限公司 | Speed regulating method for AC single-phase motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20180929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |