CN206481243U - A kind of switch reluctance machine drive silicon controlled control circuit - Google Patents
A kind of switch reluctance machine drive silicon controlled control circuit Download PDFInfo
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- CN206481243U CN206481243U CN201621409536.XU CN201621409536U CN206481243U CN 206481243 U CN206481243 U CN 206481243U CN 201621409536 U CN201621409536 U CN 201621409536U CN 206481243 U CN206481243 U CN 206481243U
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Abstract
The application is related to a kind of switch reluctance machine drive silicon controlled control circuit; SCR including being made up of photoelectrical coupler, pull-up resistor, control pipe, pull down resistor, the first current-limiting resistance, the second current-limiting resistance, protection diode, electric capacity and current-limiting resistance matrix controls circuit, and insulating power supply power supply circuit is constituted by high-frequency pulse transformer T1, commutation diode D1, filter capacitor C1, decoupling capacitor C2, load resistance R1, protection diode D2.The application has produces control signal using micro-control unit, and control signal is coupled into SCR ends by photoelectrical coupler, realizes electrical isolation, and SCR ends power supply also using independently-powered, effectively increases circuit stability, reliability；Pulse signal generator RC oscillators in the prior art or signal coupling are solved using in capacity coupled occasion, the change of RC values causes the frequency of control signal, amplitude to change, the problem of less reliable.
Description
Technical field
The utility model is related to a kind of silicon controlled control circuit, particularly a kind of switch reluctance machine drive controllable silicon control
Circuit processed.
Background technology
In the main circuit of switch reluctance machine drive, because there is the energy storage of Large Copacity between rectification circuit and inverter circuit
Electric capacity, in the upper electric starting stage, electric capacity both end voltage can not be mutated, and be equivalent to " short circuit " state, can be to outside breaker, air
Switch, line voltage cause very big rush of current, cause the failures such as tripping operation.Therefore conventional treatment mode be rectification circuit with
A doublet being made up of current-limiting resistance and contactor is concatenated between storage capacitor.
Because contactor need space to be mounted is big, the problems such as sparking, loose contact occur in contact switch, and change
With the device of SCR (controllable silicon) this " noncontacting switch ", the reliability of circuit is improved, and SCR can also be sealed with rectifier bridge
It is fitted together, saves installing space.
SCR control circuit needs and MCU control circuit electrical isolation, some existing powerful use SCR precharge
The SCR control circuits of frequency converter produce pulse control signal using RC oscillating circuits, or use differential circuit, but RC vibrations are electric
Road over time and temperature change, irreversible change can occur for capacitance-resistance value.Circuit stability is set to be deteriorated.
Such as Publication No. CN201266915, described controllable it discloses a kind of silicon controlled control circuit, including controllable silicon
Electric capacity C1 is connected between the triggering end and MCU I/O ports of silicon, two poles are also associated between the triggering end and ground of controllable silicon
Pipe D1, the diode D1 positive pole are connected with the triggering end of controllable silicon, negative pole is connected to the ground.Its weak point is：1st, pulse
Control signal is coupled by electric capacity C1, because the driving current that SCR needs is larger, electric capacity C1 is by temperature change, service life etc.
Factor influence can make capacitance change, and SCR easy drive lacking electric currents introduce unreliable factor in design.2nd, retouched in patent
State and " be connected with electric capacity C1 ", MCU control end between the triggering end and MCU I/O ports of the controllable silicon not do electrically with SCR
Isolation, reduces application, is less suitably applied frequency converter, Exchange Server, switch reluctance machine drive etc.
Storage capacitor pre-charge circuit in product.
The content of the invention
The purpose of this utility model is exactly that there is provided a kind of switched reluctance machines in order to avoid the weak point in background technology
Driver silicon controlled control circuit.
To reach above-mentioned purpose, the utility model is adopted the following technical scheme that：A kind of switch reluctance machine drive is controllable
Silicon controls circuit, including micro-control unit, insulating power supply power supply circuit and SCR control circuits, and SCR controls circuit by photoelectricity coupling
Clutch, pull-up resistor, control pipe, pull down resistor, first resistor, second resistance, protection diode, electric capacity and current-limiting resistance square
Battle array, the signal of SCR control circuit is provided by micro-control unit, the b pin of photoelectrical coupler be connected to micro-control unit so as to
Receive pulse control signal, pulse control signal is realized after electrical isolation by photoelectrical coupler, insulating power supply power supply circuit is just
Pole is connected to the d pin of photoelectrical coupler, and the c pin of photoelectrical coupler are connected to one end of first resistor, the other end of first resistor
Be connected to the base stage of control pipe, the base stage of control pipe is connected to one end of pull down resistor, the other end of pull down resistor be connected to every
From the negative pole of power-supplying circuit, the colelctor electrode of control pipe is connected to the negative electrode of protection diode, the anode connection of protection diode
The positive pole of insulating power supply power supply circuit, the emitter stage of control pipe is connected to one end of current-limiting resistance matrix, current-limiting resistance matrix
The other end is connected to second resistance, one end of the RC circuits of electric capacity composition, and the other end of RC circuits is connected to insulating power supply and powered
The negative terminal of circuit.
For a kind of optimization of the present utility model, insulating power supply power supply circuit by high-frequency pulse transformer, commutation diode,
Filter capacitor, decoupling capacitor, load resistance, protection diode composition, the c pin of high-frequency pulse transformer are connected to commutation diode
Anode, the negative electrode of commutation diode is connected to the positive pole of filter capacitor, decoupling capacitor, the d pin connection of high-frequency pulse transformer
To filter capacitor, the negative pole of decoupling capacitor, the rectification of foregoing circuit composition, filter circuit simultaneously export DC voltage and are connected to load resistance
Two ends after export galvanic current pressure to SCR control circuit provide power supply.
For a kind of optimization of the present utility model, RC circuits two ends output-scr control signal.
For a kind of optimization of the present utility model, the current-limiting resistance matrix by the 3rd current-limiting resistance, the 4th current-limiting resistance,
5th current-limiting resistance, the parallel connection of the 6th current-limiting resistance are constituted.
The utility model is compared with background technology, with control signal is produced using micro-control unit, by photoelectrical coupler
Control signal is coupled to SCR ends, electrical isolation is realized, SCR ends power supply also using independently-powered, effectively increases circuit stability
Property, reliability；Solve pulse signal generator (RC oscillators) in the prior art or signal coupling uses capacity coupled field
In conjunction, the change of RC values causes the frequency of control signal, amplitude to change, the problem of less reliable.
Brief description of the drawings
Fig. 1 is the schematic diagram of switch reluctance machine drive silicon controlled control circuit.
Embodiment
Embodiment 1：Reference picture 1.A kind of switch reluctance machine drive silicon controlled control circuit, including micro-control unit
MCU, insulating power supply power supply circuit and SCR control circuits, it is characterized in that：The electric routing optocoupler U1 of SCR controls, pull-up resistor
R2, control pipe Q1, pull down resistor R3, first resistor R4, second resistance R5, protection diode D2, electric capacity C3 and current-limiting resistance square
Battle array, second resistance R5 and electric capacity C3 constitute the RC filter circuits of output signal, and the signal of the SCR controls circuit is by microcontroller list
First MCU is provided, and this control signal is realized after electrical isolation that photoelectrical coupler U1 b pin are connected to micro-control by photoelectrical coupler U1
Unit MCU processed is so as to receive pulse control signal, and pulse control signal is realized after electrical isolation by photoelectrical coupler U1, isolation electricity
The positive pole of source power supply circuit is connected to photoelectrical coupler U1 d pin, and photoelectrical coupler U1 c pin are connected to first resistor R4's
One end, the first resistor R4 other end is connected to control pipe Q1 base stage, and control pipe Q1 base stage is connected to pull down resistor R3's
One end, the pull down resistor R3 other end is connected to the negative pole of insulating power supply power supply circuit, and control pipe Q1 colelctor electrode is connected to protection
Diode D2 negative electrode, protection diode D2 anode connects the positive pole of insulating power supply power supply circuit, control pipe Q1 emitter stage
One end of current-limiting resistance matrix is connected to, the other end of current-limiting resistance matrix is connected to the RC of second resistance R5, electric capacity C3 composition
One end of circuit, the other end of RC circuits is connected to the negative terminal of insulating power supply power supply circuit.Insulating power supply power supply circuit is by high frequency
Pulse transformer T1, commutation diode D1, filter capacitor C1, decoupling capacitor C2, load resistance R1, protection diode D2 compositions,
High-frequency pulse transformer T1 c pin are connected to commutation diode D1 anode, and commutation diode D1 negative electrode is connected to filtered electrical
Hold C1, decoupling capacitor C2 positive pole, high-frequency pulse transformer T1 d pin are connected to filter capacitor C1, decoupling capacitor C2 negative pole,
The rectification of foregoing circuit composition, filter circuit simultaneously export after DC voltage is connected to load resistance R1 two ends and export galvanic current
Press and provide power supply to SCR control circuits.RC circuits two ends output-scr control signal.The current-limiting resistance matrix is by the 3rd current limliting
Resistance R6, the 4th current-limiting resistance R7, the 5th current-limiting resistance R8, the 6th current-limiting resistance R9 parallel connections are constituted.
It is to be understood that：The detailed description although the present embodiment is contrasted to the utility model, these are said
It is bright, it is any real without departing from the utility model simply to simple declaration of the present utility model, rather than to limitation of the present utility model
Innovation and creation in matter spirit, each fall within protection domain of the present utility model.
Claims (4)
1. a kind of switch reluctance machine drive silicon controlled control circuit, including micro-control unit (MCU), insulating power supply are powered electricity
Road and SCR control circuits, it is characterized in that：The electric routing optocoupler (U1) of SCR controls, pull-up resistor (R2), control pipe (Q1),
Pull down resistor (R3), the first current-limiting resistance (R4), second resistance (R5), protection diode (D2), electric capacity (C3) and current-limiting resistance
Matrix, the signal of the SCR controls circuit is provided by micro-control unit (MCU), and the b pin of photoelectrical coupler (U1) are connected to micro-control
Unit (MCU) processed is so as to receive pulse control signal, and pulse control signal is realized after electrical isolation by photoelectrical coupler (U1), every
Positive pole from power-supplying circuit is connected to the d pin of photoelectrical coupler (U1), and the c pin of photoelectrical coupler (U1) are connected to the first electricity
The one end of (R4) is hindered, the other end of first resistor (R4) is connected to control pipe (Q1) base stage, the base stage connection of control pipe (Q1)
To pull down resistor (R3) one end, the other end of pull down resistor (R3) is connected to the negative pole of insulating power supply power supply circuit, control pipe
(Q1) colelctor electrode is connected to protection diode (D2) negative electrode, the anode connection insulating power supply power supply circuit of protection diode (D2)
Positive pole, the emitter stage of control pipe (Q1) is connected to one end of current-limiting resistance matrix, and the other end of current-limiting resistance matrix is connected to
One end of second resistance (R5), the RC circuits of electric capacity (C3) composition, the other end of RC circuits is connected to insulating power supply power supply circuit
Negative terminal.
2. switch reluctance machine drive silicon controlled control circuit according to claim 1, it is characterized in that：Insulating power supply is supplied
Circuit is by high-frequency pulse transformer (T1), commutation diode (D1), filter capacitor (C1), decoupling capacitor (C2), load resistance
(R1), protection diode (D2) is constituted, and the c pin of high-frequency pulse transformer (T1) are connected to commutation diode (D1) anode, whole
The negative electrode of stream diode (D1) is connected to filter capacitor (C1), the positive pole of decoupling capacitor (C2), the d of high-frequency pulse transformer (T1)
Pin is connected to filter capacitor (C1), the negative pole of decoupling capacitor (C2), and the rectification of foregoing circuit composition, filter circuit simultaneously export direct current
Galvanic current pressure is exported behind the two ends for being crimped onto load resistance (R1) and provides power supply to SCR control circuits.
3. switch reluctance machine drive silicon controlled control circuit according to claim 1, it is characterized in that：RC circuits two ends
Output-scr control signal.
4. according to the switch reluctance machine drive silicon controlled control circuit described in claim 1, it is characterized in that：The current-limiting resistance
Matrix is in parallel by the 3rd current-limiting resistance (R6), the 4th current-limiting resistance (R7), the 5th current-limiting resistance (R8), the 6th current-limiting resistance (R9)
Constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621409536.XU CN206481243U (en) | 2016-12-21 | 2016-12-21 | A kind of switch reluctance machine drive silicon controlled control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621409536.XU CN206481243U (en) | 2016-12-21 | 2016-12-21 | A kind of switch reluctance machine drive silicon controlled control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206481243U true CN206481243U (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621409536.XU Active CN206481243U (en) | 2016-12-21 | 2016-12-21 | A kind of switch reluctance machine drive silicon controlled control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350553A (en) * | 2020-12-03 | 2021-02-09 | 核工业理化工程研究院 | Silicon controlled rectifier controller for frequency converter |
| CN113048617A (en) * | 2021-04-25 | 2021-06-29 | 珠海格力电器股份有限公司 | Fan control method, device and system and air conditioner |
-
2016
- 2016-12-21 CN CN201621409536.XU patent/CN206481243U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350553A (en) * | 2020-12-03 | 2021-02-09 | 核工业理化工程研究院 | Silicon controlled rectifier controller for frequency converter |
| CN113048617A (en) * | 2021-04-25 | 2021-06-29 | 珠海格力电器股份有限公司 | Fan control method, device and system and air conditioner |
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