CN1635682A - A rectifying circuit start-up protector - Google Patents
A rectifying circuit start-up protector Download PDFInfo
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- CN1635682A CN1635682A CN 200310112964 CN200310112964A CN1635682A CN 1635682 A CN1635682 A CN 1635682A CN 200310112964 CN200310112964 CN 200310112964 CN 200310112964 A CN200310112964 A CN 200310112964A CN 1635682 A CN1635682 A CN 1635682A
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Abstract
A starting protector for rectifying circuit referring to uncontrollable rectifying circuit starting protector using larger capacity capacitor as filter, which contains electrolytic capacitor, voltage detector, controllable composite relay and current limiter, wherein the electrolytic capacitor, voltage detector and controllable composite relay are integrated together. Said invention uses the single coil magnetic holding relay to switch which has large rated contact current and no power consumption in holding state, can be used in the starting protection of uncontrollable rectifying circuit with not great than 200A rated output current. Said invention has compact structure, easy use and low power consumption.
Description
Technical field
The invention belongs to the automatic protection circuit device, relate in particular to and a kind ofly have with the starting process protective device of larger capacity electric capacity as the uncontrollable rectification circuit of filter.
Background technology
In AC converter, the AC and DC servo-driver, ups power, in the device such as static intermediate frequency power supply, the main power circuit that is being extensive use of now is to export to corresponding load by single-phase or three-phase alternating-current supply again through electrochemical capacitor filter, the various translation circuit conversion of uncontrollable rectification circuit, fuse, And connection.The main power circuit of this structure is simple, economical, but its You Yi Ma Que Dian: when AC power begins to power, the output voltage of uncontrollable rectification circuit reaches maximum immediately, and store charge not as yet in the electrochemical capacitor filter will produce initial charge current to the electrochemical capacitor filter like this.Uncontrollable rectification circuit input voltage is high more, and the power of output is big more, and the capacitance of electrochemical capacitor filter Da Zhe Ma initial charge current more is also just big more.Zhe Ma initial charge current can make the fuse in the circuit blow or higher level's power source trip Xia many situations.The main power circuit of this like this structure just can't normally start.
The special use that is used for sort circuit so far start protective device seldom See arrive; generally all manage to solve by designer oneself; method commonly used is as shown in Figure 1: " current limliting " resistance of series connection before the positive pole of electrochemical capacitor filter; Zai And joins the normal Kai Jie Dian of pair of straight current relay Shang " current limliting " resistance, and " step-down " resistance Hou Zai And of the control coil of direct current relay series connection is associated in two Ge Duan Dian of electrochemical capacitor filter.The output of uncontrollable rectification circuit is charged to the electrochemical capacitor filter by " current limliting " resistance earlier during startup, initial charge current is limited in allowed limits, the coil of direct current relay gets when the voltage of electrochemical capacitor filter reaches set point U, its normal Kai Jie Dian connects, and electric current that uncontrollable rectification circuit is exported is switched to the normal Kai Jie Dian of the direct current relay of having connected by " current limliting " resistance.This way seems simple but has following Que Dian:
(1) can protect uncontrollable rectification circuit output-current rating to be difficult to find in the market greater than the suitable direct current relay of 30A.
(2) voltage detecting and the relay switching to the electrochemical capacitor filter lumps together, not high by connect its precision of voltage, the reliability that detect the electrochemical capacitor filter of the coil of " step-down " resistance and direct current relay, changing switched voltage set point U will realize very inconvenient by changing " step-down " resistance or direct current relay.
(3) for the normal Kai Jie Dian that makes direct current relay keeps on-state, the power consumption of the control coil of relay and " step-down " resistance causes that more greatly heating is more, and is unfavorable to equipment.
Summary of the invention
The present invention proposes a kind of rectification circuit and starts protective device, and it compared with prior art has following advantage:
(1) used that to connect the Dian rated current big, the unicoil formula magnetic latching relay that hold mode does not have power consumption switches, and can be used for the output rated current is not more than the startup protection of the uncontrollable rectification circuit of 200A under existence conditions.
(2) used custom-designed voltage detector to detect voltage on the electrochemical capacitor filter, the precision of detection, repeatability, reliability height.Switched voltage set point U changes convenient.
Power consumption was all very little when (3) commutation circuit and voltage detector were worked, and the caloric value that causes seldom, and is favourable to equipment.
(4) this rectification circuit startup protective device integrates, and compact conformation is easy to use, with low cost, brings great convenience for the designer of power electronic product.
In order to achieve the above object, rectification circuit of the present invention starts protective device by electrochemical capacitor, voltage detector, and controlled compound relay, four parts such as current-limiting resistance are formed.
Electrochemical capacitor wherein, voltage detector, three partly integrated being packaged together such as controlled compound relay.Packaging body You Wu Ma external-connected port, they also are the external-connected ports that rectification circuit starts protective device: working power "+" polarity input, working power "-" polarity input, major loop input, major loop output, common ground end.Wherein working power "-" polarity input and common ground end are in inner on, and major loop input and output are respectively the normal Kai Jie of controlled compound relay Dian De Er Ma outputs.Its De Er Ma Duan Dian connects with major loop input and output respectively current-limiting resistance in the outside of packaging body.The major loop output is again the voltage detecting end on the electrochemical capacitor filter.
Five Ma external-connected ports with connecting of protected circuit are: the major loop input joins through the cathode output end of overcurrent fuse and uncontrollable rectification circuit; the positive pole of major loop output and electrochemical capacitor filter and translation circuit joins; the negative pole of negative pole, electrochemical capacitor filter and the translation circuit of common ground end and the output of uncontrollable rectification circuit joins; "+" utmost point of working power "+" polarity input and working power joins, working power "-" polarity input and working power " " join.
Packaging body also has three exposed parts:
(1). set the resistance adjustment screw for one, can change with it and set resistance value r;
(2). set the resistance test point for one, between it and common ground end, can measure and set resistance value r, can calculate the setting voltage value U of controlled compound relay switching with r value;
(3). a pair of debug terminals, when this device connects working power, to the debugging short-circuit of terminals, no matter why the major loop output is worth the voltage of common ground end, and major loop input of this device and output are connected, and is convenient to the debugging of protected circuit this.
Voltage detector in packaging body is by being connected on the dropping resistor R1 between major loop output and the common ground end and setting resistance r dividing potential drop, through the bypass condenser filtering interference signals, obtain the voltage signal of major loop output, voltage monitoring chip by it is monitoring, be higher than set point U in case find the voltage of major loop output, the output of voltage detector is high potential just; As finding that this voltage is lower than U-Δ U, the output of voltage detector is electronegative potential just when the voltage of major loop output descends.The setting resistance r here is actual to be the resistance that is connected between the variable-resistance potentiometer Er Ma stiff end, and setting resistance test point is drawn by the Lian Jie Dian of R1 and r.The set point U=of voltage detector (1+R1/r) * 1.182, U-Δ U=(1+R1/r) * 1.132.Because dropping resistor R1 resistance is very big, the power consumption of voltage monitoring chip is very little, so the power consumption of voltage detector is very little.
In packaging body, controlled compound relay is connected with the nonpolarity electrochemical capacitor that "-" polar end connection of two identical electrochemical capacitors is formed by the coil of unicoil formula magnetic latching relay, with direct current relay output contact or have the electronic switch of identical function with " double-pole double-throw " output, with this series circuit connect into can controlled input control of Electric potentials and change to this series circuit supplier of electricity to device constitute.The coil of utilization by unicoil formula magnetic latching relay realized control to unicoil formula magnetic latching relay contact to the charge and discharge electric current of electrochemical capacitor.The transistorized base stage of controlled compound relay is joined by the input circuit of resistance capacitance formation and its control input end, and the output of control input end and voltage detector joins.The initial condition of contact before assembling of the unicoil formula magnetic latching relay of controlled compound relay should be disconnection.When the control input end of controlled compound relay was electronegative potential, the direct current relay output contact with " double-pole double-throw " output should be able to make "+" polar end of unicoil formula magnetic latching relay coil and working power "-" polarity input join.Controlled compound relay keeps the operating state desired power very little except that the certain switch current of needs.Transistorized emitter and collector by controlled compound relay is drawn the outside that a pair of debug terminals is exposed at packaging body.
In packaging body, electrochemical capacitor is connected in parallel on working power input store electrical energy, with working power and connect with the magnetic latching relay coil of controlled compound relay and filled electric electrochemical capacitor and provide power switched to reduce the capacity of working power to controlled compound relay.
It is as follows that rectification circuit of the present invention starts the operation principle of protective device in protected circuit: after this device connects working power, by its major loop output and the common ground end voltage that monitors electrolysis capacitive filter on the major loop always.Voltage owing to the electrochemical capacitor filter during beginning is zero; the voltage detector of this device is output as electronegative potential; its major loop input and the resistance value between the major loop output are current-limiting resistance; after the ac main circuit input of uncontrollable rectification circuit is connected with the mains; its rectification output starts the current-limiting resistance of protective device to the charging of electrochemical capacitor filter by rectification circuit, the voltage on the electrochemical capacitor filter increases gradually.Rectification circuit starts protective device and in a single day finds the setting voltage U of the voltage of electrochemical capacitor filter greater than it, and the normal Kai Jie Dian of its controlled compound relay is connected, and rectification circuit starts the current-limiting resistance of protective device just by short circuit.Uncontrollable rectification circuit continues the electric current of charging and later rated operational current to the electrochemical capacitor filter and is just passed through by the normal Kai Jie Dian of the controlled compound relay of having connected always.After cutting off the power supply of ac main circuit input of uncontrollable rectification circuit; voltage on the electrochemical capacitor filter descends gradually; when rectification circuit startup protective device finds that the voltage of electrochemical capacitor filter is lower than U-Δ U; the normal Kai Jie Dian of its controlled compound relay is disconnected, get ready for starting next time.Definite principle of setting voltage U is: uncontrollable rectification circuit continues can not make charging current big to burning fuse or making higher level's power source trip to the charging of electrochemical capacitor filter.The value of Δ U starts generation automatically in the protective device by rectification circuit.
Description of drawings
Fig. 1 prior art has the uncontrollable rectification circuit and the principle assumption diagram that starts guard method commonly used of electrochemical capacitor filter.
Fig. 2 rectification circuit of the present invention starts coupling method and the schematic diagram of protective device embodiment in having the uncontrollable rectification circuit of electrochemical capacitor filter.
Embodiment
Now in conjunction with the accompanying drawings, further specify the present invention with the embodiment of the present invention in having the uncontrollable rectification circuit of electrochemical capacitor filter.
This circuit is with ~ 380V power supply, the rectification of uncontrollable three-phase full-wave bridge rectifier, and specified continuous output current 200A connects fuse at "+" utmost point output of rectification circuit, and the capacitance of the electrochemical capacitor filter that connects behind the fuse is 6800 μ F.Method by prior art; in order to start protection; as Fig. 1 series limiting resistor 300 between "+" polar end of 2 ends of fuse 200 and electrochemical capacitor filter 400; in parallel the normal opened contact of direct current relay ZJ with current-limiting resistance 300; the coil of direct current relay ZJ is connected dropping resistor RO, again Zhe Ma circuit is connected in parallel on electrochemical capacitor filter 400 De Er Ma end points.The shortcoming of this method illustrates in background technology.
Fig. 2 starts coupling method and the embodiment schematic diagram of protective device 1000 in having the uncontrollable rectification circuit of electrochemical capacitor filter for rectification circuit of the present invention.Start protective device 1000 for rectification circuit in the dotted line; its You Wu Ma external-connected port: working power "+" polarity input port (1), working power "-" polarity input port (2), major loop input port (3); major loop output port (4), common ground port (5).The main circuit power of ~ 380V is received the input of uncontrollable three-phase full-wave bridge rectifier 100 by threephase cable 101."+" utmost point output of uncontrollable three-phase full-wave bridge rectifier 100 is received 1 end of fuse 200,2 of fuse 200 terminates to the major loop input port (3) that rectification circuit starts protective device 1000, and major loop output port (4) is received "+" polar end of electrochemical capacitor filter 400 and "+" utmost point input of translation circuit 500; "-" utmost point output of uncontrollable three-phase full-wave bridge rectifier 100 is received common ground port (5), "-" polar end of electrochemical capacitor filter 400 and "-" utmost point input of translation circuit 500 that rectification circuit starts protective device 1000; Rectification circuit starts working power "+" the polarity input port (1) of protective device 1000 and receives working power+15V by lead 1001, working power "-" polarity input port (2) by lead 1002 receive working power " ".
Dotted line is interior for rectification circuit of the present invention starts protective device 1000 De Wu Ma external-connected ports with interior schematic diagram among Fig. 2, is divided into electrochemical capacitor 1100 with dotted line now, voltage detector 1200, controlled compound relay 1300, four parts such as current-limiting resistance 1400 grades.Electrochemical capacitor 1100 is connected in parallel on the input store electrical energy of working power, provides power switched to reduce the capacity of working power with working power, electrochemical capacitor E2 or E3 when controlled compound relay 1300 switches.
If the voltage of electrolytic capacitor filter device 400 is Ud, then the output of voltage detector 1200 is an electronegative potential when Ud＜U=(1+R1/r) * 1.182V, the output of voltage detector 1200 is a high potential when Ud＞U=(1+R1/r) * 1.182V, and the current potential of voltage detector 1200 outputs is low by hypermutation when Ud is dropped to Ud＜(U-Δ U)=(1+R1/r) * 1.132V by high voltage.R1=390K Ω in Fig. 2,1, the 2 end resistance set point r=1.24K Ω of potentiometer R2 calculate U=373V, (U-Δ U)=357V, the error of its actual value is not more than ± and 5%.The test point TP1 of 1, the 2 end resistance set point r of the adjustment screw of potentiometer R2 and potentiometer R2 is exposed at the surface of packaging body.
Controlled compound relay 1300 is by resistance R 4, R5, R6, electrochemical capacitor C2, and diode D1, DC low-power relay ZJ1, transistor T 1, electrochemical capacitor E2, E3, unicoil formula magnetic latching relay ZJ2, debug terminals XJ waits 11 components and parts to form.DC low-power relay ZJ1 wherein and unicoil formula magnetic latching relay ZJ2 are good with the movement with not encapsulation.In controlled compound relay 1300: "-" polar end of electrochemical capacitor E2, E3 joins, and "-" polar end of "+" polar end of electrochemical capacitor E2 and unicoil formula magnetic latching relay ZJ2 coil joins; "+" polar end of unicoil formula magnetic latching relay ZJ2 coil is received the change over contact 9 of first group of Shu Chu Jie Dian 1008 of DC low-power relay ZJ1 by lead 1014; "+" polar end of electrochemical capacitor E3 is received the change over contact 12 of second group of Shu Chu Jie Dian 1009 of DC low-power relay ZJ1 by lead 1016; The K end of the normally closed fixed contact 4 of often opening fixed contact 5, second group of Shu Chu Jie Dian 1009 of first group of Shu Chu Jie Dian 1008 of DC low-power relay ZJ1,1 end of resistance R 6, diode D1 is received working power "+" polarity input port (1) by lead 1005; 2 ends of often opening fixed contact 8, debug terminals XJ of the normally closed fixed contact 1 of first group of Shu Chu Jie Dian 1008 of DC low-power relay ZJ1, second group of Shu Chu Jie Dian 1009, the emitter of transistor T 1,1 end of resistance R 4 are received working power "-" polarity input port (2) and common ground port (5) by lead 1003, lead 1004; 13 ends of 2 ends of resistance R 6 and the control coil of DC low-power relay ZJ1 join; 14 ends of the A end of the collector electrode of transistor T 1 and diode D1, the control coil of DC low-power relay ZJ1,1 end of debug terminals XJ join; 2 ends of the base stage of transistor T 1 and electrochemical capacitor C2,2 ends of resistance R 5 join; 2 ends of 1 end of electrochemical capacitor C2,1 end of resistance R 5 and resistance R 4 join, and this end is the signal input end of controlled compound relay 1300 and the output of voltage detector 1200, and promptly 8 ends of voltage monitoring chip IC 2 join.Normal opened contact 1006 outputs 1,2 of unicoil formula magnetic latching relay ZJ2 are exposed at the outside of packaging body; 1,2 ends by lead 1010 and lead 1011 and current-limiting resistance 1400 join respectively; their 1 end also is simultaneously the major loop input port (3) that rectification circuit starts protective device 1000, and 2 ends also are major loop output port (4) simultaneously.1 and 2 end points of debug terminals XJ are exposed at the surface of packaging body.The initial condition of normal opened contact 1006 before assembling of unicoil formula magnetic latching relay ZJ2 is for disconnecting.
The operation principle that rectification circuit of the present invention starts protective device 1000 is as follows: after it connects working power; because the voltage of electrochemical capacitor filter 400 is zero; the output of voltage detector 1200 is an electronegative potential; the coil of DC low-power relay ZJ1 does not have; the normally-closed contact of DC low-power relay ZJ1 is still closed, and "+" utmost point of working power is through working power "+" polarity input port (1); the normally closed fixed contact 4 of second group of Shu Chu Jie Dian 1009 of DC low-power relay ZJ1; change over contact 12; lead 1016; "+" polar end of electrochemical capacitor E3; electrochemical capacitor E3; "-" polar end of electrochemical capacitor E3; "-" polar end of electrochemical capacitor E2; electrochemical capacitor E2; "+" polar end of electrochemical capacitor E2; "-" polar end of unicoil formula magnetic latching relay ZJ2 coil; unicoil formula magnetic latching relay ZJ2 coil; "+" polar end of unicoil formula magnetic latching relay ZJ2 coil; lead 1014; the change over contact 9 of first group of Shu Chu Jie Dian 1008 of DC low-power relay ZJ1; normally closed fixed contact 1; lead 1003; working power "-" polarity input port (2) arrival working power " " the formation loop.Working power and electrochemical capacitor 1100 are crossed unicoil formula magnetic latching relay ZJ2 coil with reverse flow electric current disconnects the normal Kai Jie Dian 1006 of unicoil formula magnetic latching relay ZJ2 to electrochemical capacitor E3 charging ， Zhe Ma charging current.But because the initial condition of the normal Kai Jie of unicoil formula magnetic latching relay ZJ2 Dian 1006 is for disconnecting, so it does not move, and electrochemical capacitor E3 has been filled.Rectification circuit starts the major loop input port (3) of protective device 1000 and the resistance value between the major loop output port (4) is a current-limiting resistance 1400.Behind the input and ac main circuit power connection of uncontrollable three-phase full-wave bridge rectifier 100; its VD is charged to electrochemical capacitor filter 400 through major loop input port (3), current-limiting resistance 1400, the major loop output port (4) that overcurrent fuse 200, rectification circuit start protective device 1000, and charging current is limited by current-limiting resistance 1400.When the voltage of electrochemical capacitor filter 400 is elevated to greater than setting voltage U because of charging, voltage detector 1200 output high potentials, make transistor T 1 conducting of controlled compound relay 1300, the coil of DC low-power relay ZJ1 gets electric, the normally opened contact closure of DC low-power relay ZJ1."+" utmost point of working power is through working power "+" polarity input port (1), first group of Shu Chu Jie Dian 1008 of DC low-power relay ZJ1 often opens fixed contact 5, change over contact 9, lead 1014, "+" polar end of unicoil formula magnetic latching relay ZJ2 coil, unicoil formula magnetic latching relay ZJ2 coil, "-" polar end of unicoil formula magnetic latching relay ZJ2 coil, "+" polar end of electrochemical capacitor E2, electrochemical capacitor E2, "-" polar end of electrochemical capacitor E2, "-" polar end of electrochemical capacitor E3, electrochemical capacitor E3, "+" polar end of electrochemical capacitor E3, lead 1016, the change over contact 12 of second group of Shu Chu Jie Dian 1009 of DC low-power relay ZJ1, often open fixed contact 8, lead 1003, working power "-" polarity input port (2) arrival working power " " the formation loop.Working power, electrochemical capacitor 1100 and the voltage that has been filled on the electric electrochemical capacitor E3 superpose, the electric current of crossing unicoil formula magnetic latching relay ZJ2 coil with two times working power voltage positive flow charges to electrochemical capacitor E2, the ， of electrochemical capacitor E3 discharge meanwhile Zhe Ma electric current is connected the normal Kai Jie Dian 1006 of unicoil formula magnetic latching relay ZJ2.Normal Kai Jie Dian 1006 short circuits of the unicoil formula magnetic latching relay ZJ2 that current-limiting resistance 1400 that rectification circuit starts protective device 1000 has been switched on.The continuation charging current of 100 pairs of electrochemical capacitor filters 400 of the uncontrollable rectification circuit of three-phase and later output-current rating all flow through this to Duan Lu Jie Dian, at this moment the voltage of electrochemical capacitor filter 400 is higher, and charging current can not cause that fuse 200 blows or higher level's power source trip.After handle is received the ac main circuit dump of uncontrollable three-phase full-wave bridge rectifier 100; 400 discharges of electrochemical capacitor filter; its voltage descends; when this voltage drops to less than (U-Δ U); voltage detector 1200 output electronegative potentials; the coil of unicoil formula magnetic latching relay ZJ2 at this time; electrochemical capacitor E2; the situation that E3 and working power constitute the loop again with front electrochemical capacitor filter 400 on voltage when being zero situation the same; just electrochemical capacitor E2 has been filled; working power; electrochemical capacitor 1100 and the voltage stack of having been filled on the electric electrochemical capacitor E2; the electric current of crossing unicoil formula magnetic latching relay ZJ2 coil with two times working power voltage reverse flow charges to electrochemical capacitor E3; of electrochemical capacitor E2 discharge meanwhile Zhe Ma electric current disconnects the normal Kai Jie Dian 1006 of unicoil formula magnetic latching relay ZJ2; major loop input port (3) and the resistance value between the major loop output port (4) that rectification circuit starts protective device 1000 are again current-limiting resistance 1400, get ready for starting next time.Because electrochemical capacitor E2, E3 do not have electric current to flow through the coil of unicoil formula magnetic latching relay ZJ2 after discharging and recharging end, have only DC low-power relay ZJ1 to need the very little electric current of keeping, power consumption is very little.Dropping resistor R1 resistance in the voltage detector 1200 is very big, and power consumption is also very little, therefore can be electrochemical capacitor 1100, and voltage detector 1200, controlled compound relay 1300 these three parts are packaged together.
Main element parameter of the present invention:
Electrochemical capacitor 1100:25V, 3300 μ F resistance R 1:390K Ω, 1W, 1%
Potentiometer R2:2K Ω voltage monitoring chip IC 2: model MAX931
Electrochemical capacitor E2, E3:35V, 3300 μ F voltage-stabiliser tube DW1:11V, 0.5W
DC low-power relay ZJ1: model AGN, coil rating voltage 12V DC
Unicoil formula magnetic latching relay ZJ2: model JM-6F-A, coil rating voltage 12V DC
Current-limiting resistance 1400:20 Ω, 100W.
The present invention needs 15 volts of working power voltage direct currents, 2.5 watts of power, operating state holding power＜200 milliwatts.
Packaging body overall dimension of the present invention: 100 * 110 * 70 units are millimeter.
It is on probation on the intermediate frequency power supply experimental prototype of certain 33KW that the present invention starts protective device 1000, produces a desired effect.It also can be widely used in AC converter, during the startup of the major loop rectification circuit of level power supply is protected before the AC and DC servo-driver, ups power etc.
Claims (6)
1, a kind of rectification circuit starts protective device, it is characterized in that by electrochemical capacitor [1100], and voltage detector [1200], controlled compound relay [1300], current-limiting resistance four parts such as [1400] are formed; Electrochemical capacitor [1100], voltage detector [1200], controlled compound relay three partly integrated being packaged together such as [1300]; Working power "+" polarity input (1), working power "-" polarity input (2), major loop input (3), major loop output port (4), common ground end (5) are five external-connected ports of packaging body; Current-limiting resistance [1400] is in the outside of packaging body, and its two Ge Duan Dian connect with major loop input (3) and output (4) respectively; Packaging body also has three exposed parts:
(1). an adjustment screw of setting resistance r;
(2). a test point of setting resistance r, between it and common ground end, can measure and set resistance value r, can calculate the setting voltage value U of controlled compound relay switching with r value;
(3). a pair of debug terminals, when this device connects working power, to the debugging short-circuit of terminals, no matter why the major loop output is worth the voltage of common ground end, and major loop input of this device and output are connected, and is convenient to protected circuit debugging this.
2, start protective device according to the said rectification circuit of claim 1; it is characterized in that described electrochemical capacitor [1100] is connected in parallel on the input store electrical energy of working power, when controlled compound relay [1300] switches, provide power switched to reduce the capacity of working power with working power, electrochemical capacitor [E2] or [E3].
3, start protective device according to the said rectification circuit of claim 1, it is characterized in that realizing the upward detection of voltage of electrochemical capacitor filter [400] with low-power consumption, high-precision voltage detector [1200]; With keeping the switching of extremely low controlled compound relay [1300] realization of power consumption to current-limiting resistance [1400].
4, start protective device according to the said rectification circuit of claim 1, it is characterized in that voltage detector [1200] by resistance [R1], [R3], potentiometer [R2], electric capacity [C1], electrochemical capacitor [E1], voltage monitoring chip [IC2], seven components and parts such as voltage stabilizing didoe [DW1] are formed; Potentiometer [R2] is connected into variable resistor, and the resistance value between its 1,2 ends is r, is called setting resistance; With resistance [R1] with set resistance r the monitored input signal of the dividing potential drop of the magnitude of voltage Ud on the electrochemical capacitor filter [400] as 3 ends of voltage monitoring chip IC 2; 2 ends of resistance [R1] connect with the major loop output port (4) that rectification circuit starts protective device [1000] by lead [1012], lead [1011], and this point is gone up the input of voltage for monitored electrochemical capacitor filter [400]; 1 end of resistance [R1] and potentiometer [R2] 2, the W end receive voltage monitoring chip [IC2] after connecting 3 Duan Ji Measuring pilot [TP1], 1 end of potentiometer [R2] is received the common ground port (5) of rectification circuit startup protective device [1000] by lead [1004]; The resistance R 3 Hou And that connects with voltage stabilizing didoe [DW1] is associated in the input of working power, and 7 ends of receiving voltage monitoring chip [IC2] by the resistance [R3] and the K end interface of voltage stabilizing didoe [DW1] are that voltage monitoring chip [IC2] provides+power supply of 11V; 1,2 ends of voltage monitoring chip [IC2] connect the back and receive the common ground port (5) that rectification circuit starts protective device [1000] by lead [1004]; 4,5,6 ends of voltage monitoring chip [IC2] connect mutually; Electric capacity [C1], electrochemical capacitor [E1] are connected in parallel on 1,2 ends of potentiometer [R2]; 8 ends of voltage monitoring chip [IC2] are the output of voltage detector [1200]; The adjustment screw of potentiometer [R2] and setting resistance value r De Measuring pilot [TP1] are exposed at the surface of packaging body; The position that Yi becomes the adjustment screw of potentiometer [R2] has become the value of setting resistance r with regard to Yi, and just Yi has become the setting voltage U that controlled compound relay [1300] switches.
5, start protective device according to the said rectification circuit of claim 1, it is characterized in that described controlled compound relay [1300] is by resistance [R4], [R5], [R6], electrochemical capacitor [C2], diode [D1], DC low-power relay [ZJ1], transistor [T1], electrochemical capacitor [E2], [E3], unicoil formula magnetic latching relay [ZJ2], debug terminals [XJ] waits 11 components and parts to form; In controlled compound relay [1300]: "-" polar end of electrochemical capacitor [E2], [E3] joins, "-" polar end of "+" polar end of electrochemical capacitor [E2] and unicoil formula magnetic latching relay ZJ2 coil joins, and "+" polar end of unicoil formula magnetic latching relay [ZJ2] coil is received the change over contact 9 of first group of Shu Chu Jie Dian [1008] of DC low-power relay [ZJ1] by lead [1014]; "+" polar end of electrochemical capacitor [E3] is received the change over contact 12 of second group of Shu Chu Jie Dian [1009] of DC low-power relay [ZJ1] by lead [1016]; The K end of the normally closed fixed contact 4 of often opening fixed contact 5, second group of Shu Chu Jie Dian [1009] of first group of Shu Chu Jie Dian [1008] of DC low-power relay [ZJ1], 1 end of resistance R 6, diode [D1] is received working power "+" polarity input port (1) by lead [1005]; 2 ends of often opening fixed contact 8, debug terminals [XJ] of the normally closed fixed contact 1 of first group of Shu Chu Jie Dian [1008] of DC low-power relay [ZJ1], second group of Shu Chu Jie Dian [1009], the emitter of transistor [T1], 1 end of resistance [R4] are received working power "-" polarity input port (2) and common ground port (5) by lead [1003], lead [1004]; 13 ends of the control coil of 2 ends of resistance [R6] and DC low-power relay [ZJ1] join; 14 ends of the A end of the collector electrode of transistor [T1] and diode [D1], the control coil of DC low-power relay [ZJ1], 1 end of debug terminals [XJ] join; 2 ends of 2 ends of the base stage of transistor [T1] and electrochemical capacitor [C2], resistance [R5] join, 2 ends of 1 end of 1 end of electrochemical capacitor [C2], resistance [R5] and resistance [R4] join, this end is that the signal input end of controlled compound relay [1300] should be joined with the output of voltage detector [1200], and promptly 8 ends of voltage monitoring chip [IC2] join; Normal opened contact [1006] output 1,2 of unicoil formula magnetic latching relay [ZJ2] is exposed at the outside of packaging body, 1,2 ends by lead [1010] and lead [1011] and current-limiting resistance [1400] join respectively, their 1 end also is simultaneously the major loop input port (3) that rectification circuit starts protective device [1000], and 2 ends also are simultaneously the major loop output ports (4) that rectification circuit starts protective device [1000]; 1 and 2 end points of debug terminals [XJ] are exposed at the surface of packaging body; The initial condition of normal opened contact [1006] before assembling of unicoil formula magnetic latching relay [ZJ2] is for disconnecting.
6, any one the said rectification circuit according to claim 1 to 5 starts protective device, it is characterized in that its connecting mode in protected uncontrollable rectification circuit is: major loop input port (3) is received 2 ends of fuse [200], and major loop output port (4) is received "+" polar end of electrochemical capacitor filter [400] and "+" utmost point input of translation circuit [500]; Common ground port (5) is received "-" utmost point output of uncontrollable three-phase full-wave bridge rectifier [100], "-" polar end of electrochemical capacitor filter [400] and "-" utmost point input of translation circuit [500]; Working power+15V receives working power "+" polarity input port (1); Working power " " receive working power "-" polarity input port (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101129647A CN100442621C (en) | 2003-12-29 | 2003-12-29 | A rectifying circuit start-up protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101129647A CN100442621C (en) | 2003-12-29 | 2003-12-29 | A rectifying circuit start-up protector |
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| CN1635682A true CN1635682A (en) | 2005-07-06 |
| CN100442621C CN100442621C (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101129647A Expired - Fee Related CN100442621C (en) | 2003-12-29 | 2003-12-29 | A rectifying circuit start-up protector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959819A (en) * | 2011-03-16 | 2013-03-06 | 惠而浦股份公司 | System and method of streamlining energy efficiency for application in cooling equipment compressors |
| CN104767388A (en) * | 2015-04-23 | 2015-07-08 | 大连理工大学 | Ozonator power supply |
| CN105720550A (en) * | 2016-04-25 | 2016-06-29 | 深圳市宝尔爱迪科技有限公司 | Explosion-proof data line circuit and explosion-proof data line with same |
| US10707768B2 (en) | 2013-05-22 | 2020-07-07 | Abb Schweiz Ag | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
| CN113363932A (en) * | 2021-06-07 | 2021-09-07 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352A (en) * | 2021-06-07 | 2021-09-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
| CN114337316A (en) * | 2022-01-14 | 2022-04-12 | 张全星 | Self-adaptive multi-phase output high-voltage power supply |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102623245B (en) * | 2012-04-11 | 2014-05-14 | 武汉艾立卡电子有限公司 | Magnetic latching relay control circuit used for switching music signals |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019111A (en) * | 1975-05-14 | 1977-04-19 | Introl Corporation | Battery charger with automatic change from current to voltage mode control |
| JPH02250670A (en) * | 1989-03-23 | 1990-10-08 | Toko Inc | Switching power supply |
| CN2485854Y (en) * | 2001-06-01 | 2002-04-10 | 翰林电子(天津)有限公司 | Protector for reserve nickel hydrogen battery in instruments from excessive discharge |
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- 2003-12-29 CN CNB2003101129647A patent/CN100442621C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959819A (en) * | 2011-03-16 | 2013-03-06 | 惠而浦股份公司 | System and method of streamlining energy efficiency for application in cooling equipment compressors |
| CN102959819B (en) * | 2011-03-16 | 2015-11-25 | 惠而浦股份公司 | For the system and method for the raising energy efficiency in cooling device compressor |
| US10707768B2 (en) | 2013-05-22 | 2020-07-07 | Abb Schweiz Ag | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
| CN104767388A (en) * | 2015-04-23 | 2015-07-08 | 大连理工大学 | Ozonator power supply |
| CN105720550A (en) * | 2016-04-25 | 2016-06-29 | 深圳市宝尔爱迪科技有限公司 | Explosion-proof data line circuit and explosion-proof data line with same |
| CN113363932A (en) * | 2021-06-07 | 2021-09-07 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352A (en) * | 2021-06-07 | 2021-09-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
| CN113363932B (en) * | 2021-06-07 | 2022-06-21 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352B (en) * | 2021-06-07 | 2022-06-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
| CN114337316A (en) * | 2022-01-14 | 2022-04-12 | 张全星 | Self-adaptive multi-phase output high-voltage power supply |
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|---|---|
| CN100442621C (en) | 2008-12-10 |
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