CN205195570U - Ad converter - Google Patents
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- CN205195570U CN205195570U CN201520719192.1U CN201520719192U CN205195570U CN 205195570 U CN205195570 U CN 205195570U CN 201520719192 U CN201520719192 U CN 201520719192U CN 205195570 U CN205195570 U CN 205195570U
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Abstract
The utility model provides a novel the AD converter product belongs to electron core basic industry's new component technique category. Have specified, the pulse trigger control wantonly of output DC voltage, automatic inlay trigger the phase place surely, need not to trigger drive power supply, six technical characteristics such as the integration is small, the radiating effect is good. On can be used to output 5 kilowatt digital frequency conversion permanent magnet generator below and output 2 kilowatt and following output direct current low voltage permanent magnet generator, play an interchange DC conversion rectification and control the pressure effect. It presses advantages such as wide range, accuse pressure precision is high, voltage temperature characteristic is good to have the accuse.
Description
Technical field
For digital frequency conversion permanent magnet generator or the AD current transformer for exporting DC low-voltage permanent magnet generator, in 2014 " field is supported in national key new product plan ", belong to the new component technical field of electronics key foundation industry.
Background technology
One, digital frequency conversion permanent magnet generator, be developed recently get up environmental protection, energy-saving and cost-reducing high-tech intelligent artifact.It is inner adopts the power electronic technology of permanent magnetism intermediate frequency generator, controllable voltage regulating rectification and ac converter, has that generating efficiency is high, volume weight is little, cheap, wave distortion is little, connect the plurality of advantages such as simple and easy with prime mover.Replace and needed excitation winding, field power supply, brush and slip-ring device, the conventional electric generators that volume weight is large, metal consumptive material is many.At present, the power output of this kind of generator is 5 kilowatts and following, and market annual requirement, more than ten million platform, becomes the market hot-sale products comprising developed country.
Digital frequency conversion permanent magnet generator, its inside can be divided into three parts by function: Part I is Thee-phase alternating current permanent-magnetic generator, and its function converts the mechanical energy of prime mover to three-phase mid-frequency AC energy efficiently.Part II is controllable voltage regulating rectifying part, and its function is the different frequency transported by Thee-phase alternating current permanent-magnetic generator, the alternating voltage of different crest voltage is transformed to direct voltage, and by the DC voltage control of output at rated value.Part III is ac converter part, and its function is the direct voltage inversion that controllable voltage regulating rectifying part transported for frequency and effective value meet the single-phase sine wave alternating current needed for client.
At present, the Part I of digital frequency conversion permanent magnet generator, the technology of Part III have been tending towards ripe, and Part II technology is not yet perfect.Market survey shows, the controllable voltage regulating rectification product of China's current digital frequency conversion permanent magnet generator Part II, and generally using has following traditional technical scheme:
Adopt three-phase common cathode controllable silicon bridge rectifier to be power component, jointly form controllable voltage regulating rectification circuit with output voltage controlling circuit.When the direct voltage that circuit exports is lower than amount of exports definite value, controllable silicon is in full opening state, is carried by the alternating voltage that Thee-phase alternating current permanent-magnetic generator exports after three phase rectifier directly to rear class; When the direct voltage that circuit exports is higher than amount of exports definite value, controllable silicon is in full off state, and the energy cutting off Thee-phase alternating current permanent-magnetic generator is carried to rear class.Due to pressure regulation need, circuit is operated in high speed on off operating mode repeatedly, output be pulsating direct voltage.Program advantage is that cost is lower, technology is simple.Its shortcoming is, must be another for one group of low-voltage dc power supply, removes triggering three silicon controlled on-offs.This just need separately arrange one group of low pressure winding in the stator coil of Thee-phase alternating current permanent-magnetic generator, produces this group low-voltage dc power supply, occupies the space of generator power winding; Also separately can set up one group " flyback high frequency chopping change-over circuit ", the alternating current that Thee-phase alternating current permanent-magnetic generator exports is converted to the DC power supply of about 5V, trigger for control.Cause complex structure owing to arranging one group of low-voltage dc power supply, pressure regulation trigging control parts and power component can only split two places, and be difficult to make small-sized integrated, go between parts various, failure rate and manufacturing cost are relatively high.Again owing to triggering three silicon controlled on-offs by one group of triggering signal simultaneously, its power component can only adopt " common cathode formula " controllable silicon bridge rectifier.The circuit block diagram of the program is as shown in this Figure of description 1.
Two, due to the height of permanent magnet generator consume, energy-conservation, volume is little, the advantage such as lightweight, in recent years, exports DC low-voltage permanent magnet generator, in large quantities for the production of with in life.What have is attached in vapour, diesel oil motivation, is used for the startup of prime mover for charge in batteries; What have is installed on the mobile device such as car, ship, or is equipped with storage battery as main power source in mine, borderland, area, wilderness, so this kind of permanent magnet generator requirement output is DC low-voltage (12 ~ 36V) electric energy.The power output of this kind of generator is 2 kilowatts and following, and domestic market annual requirement about ten million platform, is widely used in the departments such as transport, industrial and mineral, agricultural, field work.
Export DC low-voltage permanent magnet generator, principal functional structure is pressed in its inside, can be divided into two parts: Part I is Thee-phase alternating current permanent-magnetic generator.Part II is controllable voltage regulating rectifying part, and its function is the different frequency transported by Thee-phase alternating current permanent-magnetic generator, the alternating voltage of different crest voltage is transformed to DC low-voltage, and by the DC voltage control of output in rated value.The traditional technical scheme of Part II is similar to the controllable voltage regulating rectification scheme for digital frequency conversion permanent magnet generator, suddenly waits to improve.
In view of above-mentioned two class permanent magnet generatores are to the requirement of controllable voltage regulating rectification part, inventor creates a kind of brand-new controllable voltage regulating rectification circuit, by the three-phase mid-frequency alternating current (AC) that Thee-phase alternating current permanent-magnetic generator exports, be transformed to the direct current (DC) of the adjustable control of output voltage, this device is referred to as " AD current transformer ".
Summary of the invention
The invention provides a kind of novel AD current transformer, both may be used for digital frequency conversion permanent magnet generator, also can be used for exporting DC low-voltage permanent magnet generator.AD current transformer of the present invention, has following six technical characteristics:
One, output dc voltage is specified arbitrarily---and AD current transformer is when Thee-phase alternating current permanent-magnetic generator input voltage is less than or equal to rated output voltage, and internal circuit is three phase full wave rectification function, externally exports the direct voltage less than or equal to rated value; When Thee-phase alternating current permanent-magnetic generator input voltage is higher than rated output voltage, externally export the direct voltage equaling rated value; Load voltage value, between 30 ~ 400 volts, can set arbitrarily as requested.
Two, the triggering to three-phase common anode controllable silicon bridge rectifier in pulse-triggered controllable silicon---AD current transformer, adopt constant-current pulse activation pattern, the constant current peak value of triggering is thyristor I
gT1.5 ~ 2 times, trigger pulse width for number microsecond, trigger instantaneous power for number pick up milliwatt.
Three, automatically embeddingly phase-triggered is determined---AD current transformer utilizes the potential difference between the anode target of thyristor to become a full member moment of value as triggering start-phase by zero, when Thee-phase alternating current permanent-magnetic generator input voltage is less than or equal to rated output voltage, the automatic embedding fixed each phase start trigger zero phase of energy, keep 120 degree of trigger impulse differences between three-phase, guarantee three-phase uninterrupted conducting.
Four, without the need to triggering driving power---AD current transformer is got potential difference between the anode of thyristor and negative electrode and is formed pulse triggering signal, without the need to arranging triggering driving power in addition.Thee-phase alternating current permanent-magnetic generator does not need to arrange independent triggering driving power winding, does not need to arrange similar " flyback high frequency chopping change-over circuit " yet and provides triggering driving power, save generator windings space, simplify mechanism of power generation fabrication technique.Needed for whole triggering drive circuit, average power is not more than 2 watts, has significantly saved triggering driving-energy.
Five, integration, volume is little---owing to having got rid of triggering driving power, the sampling rate of AD current transformer can being made of one to circuits for triggering, three-phase common anode controllable silicon bridge rectifier, the anti-interference bridge circuit of three-phase capacitance-resistance etc., conveniently to produce, test, installation and maintenance.Volume after device integration reduces, and reduces the consumptive material of permanent magnet generator.
Six, good heat dissipation effect---adopt aluminum-based copper-clad plate as device base plate, by the close contact of aluminum-based copper-clad plate and thermal component, the heat of AD current transformer is directly conducted to thermal component.
AD current transformer of the present invention, in digital frequency conversion permanent magnet generator, its circuit structure characteristic sum operation principle is as follows:
A transform stream device of the present invention, in digital frequency conversion permanent magnet generator, its circuit structure is characterised in that: be made up of four parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier, the anti-interference bridge circuit of three-phase capacitance-resistance and external terminals sampling rate;
Sampling rate includes 15 components and parts such as resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, voltage-stabiliser tube D1, voltage-stabiliser tube D8, electric capacity C1, precision shunt integrated regulator H, optocoupler G, diode D2, diode D3, diode D4, NPN type triode S to circuits for triggering; H has three outer pins: A pin is anode, R pin inputs pole for sampling, K pin is negative electrode, and G has four outer pins: the collector electrode that the emitter that the negative pole that the positive pole that 1 pin is inner LED, 2 pin are inner LED, 3 pin are inner NPN type triode, 4 pin are inner NPN type triode;
Sampling rate is in circuits for triggering, R1 and R2 connects, series connection mid point connects the R pin of H and a pin of C1, R1 do not connect pin be connected to the direct current external terminal of external terminal part+, R2 do not connect another pin of pin and C1 be connected to the direct current external terminal of external terminal part-, the negative pole series connection of R3 and D8, series connection mid point connects 1 pin of G and a pin of R4, R3 do not connect pin be connected to direct current external terminal+, the positive pole of D8 receive direct current external terminal-, the K pin of H and another pin of R4, 2 pin of G link together, the A pin of H be connected to direct current external terminal-, one pin of R5 be connected to direct current external terminal+, the negative pole of another pin of R5 and D1, one pin of R6, 4 pin of G link together, the positive pole of D1 and the positive pole of D2, the positive pole of D3, the positive pole of D4, the emitter of S, 3 pin of G link together, the base stage of S connects with another pin of R6, the collector electrode of S be connected to direct current external terminal-,
Three-phase common anode controllable silicon bridge rectifier includes 9 components and parts such as one-way SCR pipe K1, one-way SCR pipe K2, one-way SCR pipe K3, rectifying tube D5, rectifying tube D6, rectifying tube D7, electric capacity C2, electric capacity C3, electric capacity C4;
In three-phase common anode controllable silicon bridge rectifier, K1, K2, the anode of K3 link together and be connected to the direct current external terminal of external terminal part-on, K1, K2, the gate pole of K3 respectively with circuits for triggering D4, D3, the negative pole of D2 connects, K1, K2, the negative electrode of K3 respectively with D5, D6, be connected to respectively again after the positive pole of D7 connects three of external terminal part exchange external terminals ~ on, D5, D6, the negative pole of D7 link together and be connected to the direct current external terminal of external terminal part+on, on the gate pole that two ends of C2 receive K1 respectively and negative electrode, on the gate pole that two ends of C3 receive K2 respectively and negative electrode, on the gate pole that two ends of C4 receive K3 respectively and negative electrode,
The anti-interference bridge circuit of three-phase capacitance-resistance includes 6 components and parts such as electric capacity C5, electric capacity C6, electric capacity C7, resistance R7, resistance R8, resistance R9;
In the anti-interference bridge circuit of three-phase capacitance-resistance, C5 and R7 series connection, C6 and R8 series connection, C7 and R9 series connection, form three absorption branch roads respectively, the resistance terminal of three absorption branch roads receive respectively three of external terminal part exchange external terminals ~ on, the capacitance terminal of three absorption branch roads all receive the direct current external terminal of external terminal part+on;
External terminal part includes direct current external terminal+, direct current external terminal-, exchanges external terminal ~ tri-, ac terminal regardless of phase sequence.
Digital frequency conversion permanent magnet generator circuit block diagram of the present invention, as this Figure of description 2.For the circuit theory diagrams of the AD current transformer of digital frequency conversion permanent magnet generator, as this Figure of description 3.
The voltage regulating rectifier function of AD current transformer of the present invention is: when device three external terminals ~, input three phase variable frequency (380 ~ 600Hz), transformation (380 ~ 600V) alternating voltage (can be non-sinusoidal waveform) time, the direct current external terminal of device+, the direct voltage rated value of direct current external terminal-outwards export is 380V; When device three external terminals ~, input three phase variable frequency (330 ~ 380Hz), transformation (330 ~ 380V) alternating voltage (can be non-sinusoidal waveform) time, the direct current external terminal of device+, the DC voltage value of direct current external terminal-outwards export is 330 ~ 380V.Above-mentioned rated value artificially can adjust setting.For making the direct voltage ripple of output little, the direct current external terminal of device+, direct current external terminal-connected large bulk capacitance in external circuit, play energy storage filter action.
The pressure regulation operation principle of AD current transformer of the present invention, is described as follows see Figure of description 3: resistance R1 and resistance R2 be connected to after connecting direct current external terminal+and direct current external terminal-on, dividing potential drop sampling is carried out to the direct voltage exported.The sampling value that R2 obtains, delivers to R, A pin of precision shunt integrated regulator H, compares with the reference voltage (such as 2.50V) of H inside.When direct current external terminal+, when the direct voltage of direct current external terminal-output is lower than rated voltage, sampling voltage on R2 is lower than reference voltage, the K of H, in high-impedance state between A pin, resistance R3, the 1-2 pin of optocoupler G, in the K-A pin series arm of H, no current passes through, LED pipe between the 1-2 pin of G is not luminous, in high-impedance state between the 3-4 pin of G, electric current coating-forming voltage on D1 that resistance R5 flows to voltage-stabiliser tube D1 falls, this pressure drop provides base current by resistance R6 to triode S, make between the emitter of S and collector electrode in conducting state, thyristor K1, K2, positive electricity potential difference between the anode target of K3 produces trigger current by S to respective gate pole, make thyristor conducting, three thyristor K1, K2, K3 and three rectifying tube D5, D6, D7 constitutes three-phase full-wave bridge rectifier, three alternating currents exchanging external terminal ~ input are by after the rectification of three-phase full-wave bridge rectifier, to direct current external terminal+, direct current external terminal-output dc voltage.
Contrary with upper joint, when direct current external terminal+, when the direct voltage of direct current external terminal-output is higher than rated voltage, the sampling voltage value that R2 obtains is higher than reference voltage, the K of H, in low resistive state between A pin, resistance R3, the 1-2 pin of optocoupler G, namely larger current is produced in the K-A pin series arm of H, LED pipe luminescence between the 1-2 pin of G is also coupled to rear class, resistance between the 3-4 pin of G is reduced, the electric current that resistance R5 flows to voltage-stabiliser tube D1 is shorted, voltage-stabiliser tube D1 can not form pressure drop, no current flows on resistance R6, triode S is because making without base current between emitter and collector electrode in cut-off state, and flow through the trigger current of electric current much smaller than thyristor of resistance R5, thyristor K1, K2, K3 is in cut-off state because can not get trigger current, three AC input terminals ~ because of the cut-off of thyristor stop to direct current external terminal+, direct current external terminal-transmission power, the direct voltage exported will reduce.The direct voltage exported is lower than after rated value, and circuit will repeat the feedback control procedure of upper joint again, is raised by the direct voltage exported.So go round and begin again, the DC voltage control exported is regulated on rated value.
The voltage stabilizing circuit that voltage-stabiliser tube D8 and R3 forms, the magnitude of voltage between the K-A pin limiting H, protection H is unlikely to damage by high voltage; Resistance R4 is used for the operating current providing about 0.5mA to H; C1 is used for the clutter between the R-A pin of filtering H, ensures that the work of H is interference-free.
The work quality of AD current transformer determines primarily of the characteristic of precision shunt integrated regulator H, requires that its voltage stability and voltage temperature characteristic will be got well, and when external circuit voltage fluctuation or device temperature fluctuation, its reference voltage rate of change is little; Also require that its Open loop gain cofficient wants large, when sampling voltage has minor variations between its R-A pin, namely have very large curent change between its K-A pin, in order to improve the pressure control precision of device.Market can provide multiclass accurate reference voltage integrated operational amplifier circuit product can for selecting, and its parameter can reach: voltage temperature characteristic 50ppm/ DEG C and following, reference voltage error ± 0.4% and following, Open loop gain cofficient 1000 times and more than.The parameter of made AD converter product can reach: comprehensive pressure control precision is better than ± and 1%, integrated voltage temperature characterisitic is better than 80ppm/ DEG C.Select the proportioning value that resistance R1 with R2 is different, at random can set the output rated voltage of device on a large scale, rated value can be selected between 30V ~ 400V.Defining Section 1 technical characteristic of the present invention---output dc voltage is specified arbitrarily.
Shown in Figure of description 10, be with direct current external terminal in AD current transformer+for zero potential, the time dependent image of cathode potential of three thyristors K1, K2, K3, for convenience of problem analysis, omits the figure of high order harmonic component in figure.As shown in Figure 10, the relative direct current external terminal of cathode potential of K1, K2, K3+in negative value trapezoidal wave state, and mutual deviation 120 degree of phase places, its maximum negative peak V peak equals the peak values of ac that Thee-phase alternating current permanent-magnetic generator exports.During device external output rated voltage V volume, as seen from the figure, the relative direct current external terminal of cathode potential of K1, K2, K3-potential difference still in negative value trapezoidal wave state, and mutual deviation 120 degree of phase places.If certain moment, the VD of AD converter is lower than rated voltage, and the relative direct current external terminal of the cathode potential of K1-potential difference, negative by just transferring to, following branch road in Figure of description 3: " negative electrode of the gate pole-K1 of the emitter-diode D4-K1 of the collector electrode-S of the anode-triode S of K1 ", by generation current, the size of electric current is controlled by the base current of S, and its value equals 1.5 ~ 2 times of the IGT of K1, for several ten milliamperes, make K1 triggering and conducting.After K1 conducting, between its anode and negative electrode, potential difference levels off to zero, and two ends of above-mentioned branch road, owing to existing without potential difference, cause electric current to be zero, trigger and stop.Add that trigger current is that zero required time is very short to K1 conducting, trigger current from K1 gate pole, for several microsecond, therefore trigger current is constant-current pulse form, and the trigger current that number picks up milliampere is multiplied by the trigger voltage that l lies prostrate left and right, and instantaneous trigger power is also only number and picks up milliwatt.Define Section 2 technical characteristic of the present invention---pulse-triggered controllable silicon.Through 120 degree of phase places after K1 conducting, the relative direct current external terminal of cathode potential of K2-potential difference, negative by just transferring to, following branch road: " negative electrode of the gate pole-K2 of the emitter-diode D3-K2 of the collector electrode-S of the anode-triode S of K2 " will produce trigger current, repeat the described trigger process of joint, after K2 conducting, K1 goes to zero because negative electrode opposite anode potential difference turns on the occasion of, On current and turns off.In like manner, then through 120 degree of phase places, K3 triggering and conducting, K2 turn off.The phase-triggered of three thyristors is automatic embedding fixed according to the phase angle of input AC electricity, has nothing to do, has nothing to do with the frequency of input AC electricity and cycle with the voltage peak of input AC electricity.Define Section 3 technical characteristic of the present invention---automatically embeddingly determine phase-triggered.
See Figure of description 3, power supply needed for comparison circuits for triggering in AD current transformer, except trigger impulse energy is from except the anode of thyristor and the potential difference of negative electrode, all take from the output external terminal of device, the electric current of each branch road is milliampere level, and whole comparison triggers average power needed for drive circuit and is not more than 2 watts.Define Section 4 technical characteristic of the present invention---without the need to triggering driving power.
In Figure of description 3, the effect of electric capacity C2, C3, C4 is anti-triggering interference, on the gate pole being connected in parallel on thyristor K1, K2, K3 respectively and negative electrode, noise pulse in circuit can be avoided to cause the misoperation of thyristor.Three absorption branch roads that electric capacity C5 connects with resistance R7, electric capacity C6 connects with resistance R8, electric capacity C7 forms after connecting with resistance R9 respectively, effectively can absorb the surge pulse because thyristor break-make moment produces in circuit.
AD current transformer of the present invention, for exporting in DC low-voltage permanent magnet generator, its circuit structure characteristic sum operation principle is as follows:
When AD current transformer of the present invention is for exporting DC low-voltage permanent magnet generator, due to reasons such as the output voltage of this kind of permanent magnet generator are low, disturb less, load is simple, therefore can economize and omit for the voltage-stabiliser tube D8 in the AD current transformer of digital frequency conversion permanent magnet generator and the anti-interference bridge circuit of three-phase capacitance-resistance, sampling rate, three parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier and external terminal are made up of.Its circuit structure is characterised in that:
Sampling rate includes 14 components and parts such as resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, voltage-stabiliser tube D1, electric capacity C1, precision shunt integrated regulator H, optocoupler G, diode D2, diode D3, diode D4, NPN type triode S to circuits for triggering; H has three outer pins: A pin is anode, R pin inputs pole for sampling, K pin is negative electrode, and G has four outer pins: the collector electrode that the emitter that the negative pole that the positive pole that 1 pin is inner LED, 2 pin are inner LED, 3 pin are inner triode, 4 pin are inner triode;
Sampling rate is in circuits for triggering, R1 and R2 connects, series connection mid point connect the R pin of H and C1-pin, R1 do not connect pin be connected to the direct current external terminal of external terminal part+, R2 do not connect another pin of pin and C1 be connected to the direct current external terminal of external terminal part-, one pin of R3 connects 1 pin of G and a pin of R4, another pin of R3 be connected to direct current external terminal+, the K pin of H and another pin of R4, 2 pin of G link together, the A pin of H be connected to direct current external terminal-, one pin of R5 be connected to direct current external terminal+, the negative pole of another pin of R5 and D1, one pin of R6, 4 pin of G link together, the positive pole of D1 and the positive pole of D2, the positive pole of D3, the positive pole of D4, the emitter of S, 3 pin of G link together, the base stage of S connects with another pin of R6, the collector electrode of S be connected to direct current external terminal-,
Three-phase common anode controllable silicon bridge rectifier includes 9 components and parts such as one-way SCR pipe K1, one-way SCR pipe K2, one-way SCR pipe K3, rectifying tube D5, rectifying tube D6, rectifying tube D7, electric capacity C2, electric capacity C3, electric capacity C4;
In three-phase common anode controllable silicon bridge rectifier, K1, K2, the anode of K3 link together and be connected to the direct current external terminal of external terminal part-on, K1, K2, the gate pole of K3 respectively with circuits for triggering D4, D3, the negative pole of D2 connects, K1, K2, the negative electrode of K3 respectively with D5, D6, be connected to respectively again after the positive pole of D7 connects three of external terminal part exchange external terminals ~ on, D5, D6, the negative pole of D7 link together and be connected to the direct current external terminal of external terminal part+on, on the gate pole that two ends of C2 receive K1 respectively and negative electrode, on the gate pole that two ends of C3 receive K2 respectively and negative electrode, on the gate pole that two ends of C4 receive K3 respectively and negative electrode,
External terminal part includes direct current external terminal+, direct current external terminal-, exchanges external terminal ~ tri-, ac terminal regardless of phase sequence.
The present invention exports the circuit block diagram of DC low-voltage permanent magnet generator, as this Figure of description 5; For exporting the circuit theory diagrams of the AD current transformer of DC low-voltage permanent magnet generator, as this Figure of description 6.
Operation principle for exporting the AD current transformer of DC low-voltage permanent magnet generator is identical with the AD current transformer for digital frequency conversion permanent magnet generator, repeats no more.
Accompanying drawing explanation
Fig. 1, the functional-block diagram of conventional digital frequency conversion permanent magnet generator circuit.In figure, be controllable voltage regulating rectifying part in dotted line frame.
Fig. 2, the circuit block diagram of digital frequency conversion permanent magnet generator of the present invention.In figure, be controllable voltage regulating rectifying part in dotted line frame.
Fig. 3, for the AD converter circuit schematic diagram of digital frequency conversion permanent magnet generator.In figure, be divided into sampling rate to four parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier, the anti-interference bridge circuit of three-phase capacitance-resistance and external terminals with dotted line
Fig. 4, for the AD current transformer product integration plane structure chart of digital frequency conversion permanent magnet generator.In figure, base plate adopts rectangle aluminum-based copper-clad plate a slice, and product design is of a size of 60 millimeters × 40 millimeters × 7 millimeters, and all components and parts use paster technique to be assembled on aluminum-based copper-clad plate, and corner is provided with the through hole four for the fixed installation of M3 screw.
Fig. 5, the present invention exports the circuit block diagram of DC low-voltage permanent magnet generator.In figure, be controllable voltage regulating rectifying part in dotted line frame.
Fig. 6, for exporting the AD converter circuit schematic diagram of DC low-voltage permanent magnet generator.In figure, be divided into sampling rate to three parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier and external terminals with dotted line
Fig. 7, for exporting the AD current transformer product integration plane structure chart of DC low-voltage permanent magnet generator.In figure, base plate adopts rectangle aluminum-based copper-clad plate a slice, and product design is of a size of 48 millimeters × 44 millimeters × 7 millimeters, and all components and parts use paster technique to be assembled on aluminum-based copper-clad plate, and corner is provided with the through hole four for the fixed installation of M3 screw.
Shell front elevation is moulded in the encapsulation of Fig. 8, AD current transformer.
Shell ground plan is moulded in the encapsulation of Fig. 9, AD current transformer.
In Figure 10, AD current transformer, with direct current external terminal+for zero potential, the time dependent image of cathode potential of three thyristors K1, K2, K3.
Embodiment
AD current transformer of the present invention is for solving device integration, and the requirement that good heat dissipation effect, cost are low, its base plate have employed New insulated heat-conductive composite material---aluminum-based copper-clad plate, whole components and parts use paster technique to be assembled on a slice rectangle aluminum-based copper-clad plate, need to carry out layout designs according to heat conduction and insulation.For the AD current transformer of digital frequency conversion permanent magnet generator, power output 5 kilowatts and following, the area of aluminum-based copper-clad plate used is 60 millimeters × 40 millimeters, and the thickness of aluminum-based copper-clad plate is 1.5 ~ 2.0 millimeters, and the overall dimension after assembling is 60 millimeters × 40 millimeters × 7 millimeters.For exporting the AD current transformer of DC low-voltage permanent magnet generator, power output 2 kilowatts and following, the area of aluminum-based copper-clad plate used is 48 millimeters × 44 millimeters, and the thickness of aluminum-based copper-clad plate is 1.5 ~ 2.0 millimeters, and the overall dimension after assembling is 48 millimeters × 44 millimeters × 7 millimeters.Whole components and parts needed for assembling all adopt surface mount elements, greatly reduce volume and cost.Defining Section 5 technical characteristic of the present invention---integration, volume is little.
The components and parts that in AD current transformer of the present invention, caloric value is maximum, be three thyristors and three rectifying tubes, in plane figure design, make it be evenly distributed on aluminum-based copper-clad plate as far as possible, guide the even heat utilizing effective contact area of components and parts and aluminum-based copper-clad plate it to be produced and be transmitted to and aluminum-based copper-clad plate.For this reason, in plane figure, thyristor K1, thyristor K2, thyristor K3 are evenly distributed along a long side direction of rectangle aluminum-based copper-clad plate, and rectifying tube D5, rectifying tube D6, rectifying tube D7 are evenly distributed along another long side direction.The particular location distribution of each components and parts is see shown in this Figure of description 4 and this Figure of description 7.
The heat that AD current transformer product of the present invention produces, directly passes to the radiator of close contact with conduction pattern by the aluminum-based copper-clad plate back side.During for exporting DC low-voltage permanent magnet generator, directly can conduct to the machine tail end of permanent magnet generator, eliminating heat radiator dedicated.For with radiator close contact, be provided with in the corner of aluminum-based copper-clad plate for M3 screw fixed installation through hole four.Define Section 6 technical characteristic of the present invention---good heat dissipation effect.
For convenience of the need of quality testing in production, at aluminum-based copper-clad plate on the surface, be provided with the circular conductive test point of 4 diameters 1.8 millimeters.
For the AD current transformer be operated in humidity, acid mist environment; for reinforced insulation protected effect; product component qualified after tested must be loaded encapsulation moulds in shell; then fill with in clearance spaces and fill out epoxy resin; five external terminals of device; adopt silver-coated copper wire to mould hole, five gardens, shell front from encapsulation to draw; front is separately provided with one, the hole, garden for pouring into liquid epoxy; front is also provided with mark "+,-, ~ " symbol; to facilitate electrode identification, encapsulation is moulded shell two end and is provided with fixing hole, garden and each one of slotted eye.The front elevation of shell is moulded in the encapsulation of AD current transformer, ground plan is shown in Figure of description 8 and Fig. 9 respectively.For the AD current transformer of digital frequency conversion permanent magnet generator, its overall dimension is 80 millimeters × 42 millimeters × 10 millimeters; For exporting the AD current transformer of DC low-voltage permanent magnet generator, its overall dimension is 68 millimeters × 46 millimeters × 10 millimeters.
Utilize partial content of the present invention, change the some factors in this specification, such as: the title etc. the aluminum-based copper-clad plate described in this specification being replaced with copper base copper clad laminate, change the physical dimension of product, adjust the plane figure of components and parts, change product, produce identical operation principle and the product of identical performance, still belong to the scope of the invention.
Claims (4)
1. an AD current transformer for digital frequency conversion permanent magnet generator use, is characterized in that: be made up of four parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier, the anti-interference bridge circuit of three-phase capacitance-resistance and external terminals sampling rate;
Sampling rate includes 15 components and parts such as resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, voltage-stabiliser tube D1, voltage-stabiliser tube D8, electric capacity C1, precision shunt integrated regulator H, optocoupler G, diode D2, diode D3, diode D4, NPN type triode S to circuits for triggering; H has three outer pins: A pin is anode, R pin inputs pole for sampling, K pin is negative electrode, and G has four outer pins: the collector electrode that the emitter that the negative pole that the positive pole that 1 pin is inner LED, 2 pin are inner LED, 3 pin are inner NPN type triode, 4 pin are inner NPN type triode;
Sampling rate is in circuits for triggering, R1 and R2 connects, series connection mid point connects the R pin of H and a pin of C1, R1 do not connect pin be connected to the direct current external terminal of external terminal part+, R2 do not connect another pin of pin and C1 be connected to the direct current external terminal of external terminal part-, the negative pole series connection of R3 and D8, series connection mid point connects 1 pin of G and a pin of R4, R3 do not connect pin be connected to direct current external terminal+, the positive pole of D8 receive direct current external terminal-, the K pin of H and another pin of R4, 2 pin of G link together, the A pin of H be connected to direct current external terminal-, one pin of R5 be connected to direct current external terminal+, the negative pole of another pin of R5 and D1, one pin of R6, 4 pin of G link together, the positive pole of D1 and the positive pole of D2, the positive pole of D3, the positive pole of D4, the emitter of S, 3 pin of G link together, the base stage of S connects with another pin of R6, the collector electrode of S be connected to direct current external terminal-,
Three-phase common anode controllable silicon bridge rectifier includes 9 components and parts such as one-way SCR pipe K1, one-way SCR pipe K2, one-way SCR pipe K3, rectifying tube D5, rectifying tube D6, rectifying tube D7, electric capacity C2, electric capacity C3, electric capacity C4;
In three-phase common anode controllable silicon bridge rectifier, K1, K2, the anode of K3 link together and be connected to the direct current external terminal of external terminal part-on, .K1, K2, the gate pole of K3 respectively with circuits for triggering D4, D3, the negative pole of D2 connects, K1, K2, the negative electrode of K3 respectively with D5, D6, be connected to respectively again after the positive pole of D7 connects three of external terminal part exchange external terminals ~ on, D5, D6, the negative pole of D7 link together and be connected to the direct current external terminal of external terminal part+on, on the gate pole that two ends of C2 are switched to K1 and negative electrode, on the gate pole that two ends of C3 are switched to K2 and negative electrode, on the gate pole that two ends of C4 are switched to K3 and negative electrode,
The anti-interference bridge circuit of three-phase capacitance-resistance includes 6 components and parts such as electric capacity C5, electric capacity C6, electric capacity C7, resistance R7, resistance R8, resistance R9;
In the anti-interference bridge circuit of three-phase capacitance-resistance, C5 and R7 series connection, C6 and R8 series connection, C7 and R9 series connection, form three absorption branch roads respectively, the resistance terminal of three absorption branch roads receive respectively three of external terminal part exchange external terminals ~ on, the capacitance terminal of three absorption branch roads all receive the direct current external terminal of external terminal part+on;
External terminal part includes direct current external terminal+, direct current external terminal-, exchanges external terminal ~ tri-, ac terminal regardless of phase sequence.
2., for exporting the AD current transformer that DC low-voltage permanent magnet generator uses, it is characterized in that: sampling rate, three parts such as circuits for triggering, three-phase common anode controllable silicon bridge rectifier and external terminal are made up of;
Sampling rate includes 14 components and parts such as resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, voltage-stabiliser tube D1, electric capacity C1, precision shunt integrated regulator H, optocoupler G, diode D2, diode D3, diode D4, NPN type triode S to circuits for triggering; H has three outer pins: A pin is anode, R pin inputs pole for sampling, K pin is negative electrode, and G has four outer pins: the collector electrode that the emitter that the negative pole that the positive pole that 1 pin is inner LED, 2 pin are inner LED, 3 pin are inner triode, 4 pin are inner triode;
Sampling rate is in circuits for triggering, R1 and R2 connects, series connection mid point connects the R pin of H and a pin of C1, R1 do not connect pin be connected to the direct current external terminal of external terminal part+, R2 do not connect another pin of pin and C1 be connected to the direct current external terminal of external terminal part-, one pin of R3 connects 1 pin of G and a pin of R4, another pin of R3 be connected to direct current external terminal+, the K pin of H and another pin of R4, 2 pin of G link together, the A pin of H be connected to direct current external terminal-, one pin of R5 be connected to direct current external terminal+, the negative pole of another pin of R5 and D1, one pin of R6, 4 pin of G link together, the positive pole of D1 and the positive pole of D2, the positive pole of D3, the positive pole of D4, the emitter of S, 3 pin of G link together, the base stage of S connects with another pin of R6, the collector electrode of S be connected to direct current external terminal-,
Three-phase common anode controllable silicon bridge rectifier includes 9 components and parts such as one-way SCR pipe K1, one-way SCR pipe K2, one-way SCR pipe K3, rectifying tube D5, rectifying tube D6, rectifying tube D7, electric capacity C2, electric capacity C3, electric capacity C4;
In three-phase common anode controllable silicon bridge rectifier, K1, K2, the anode of K3 link together and be connected to the direct current external terminal of external terminal part-on, K1, K2, the gate pole of K3 respectively with circuits for triggering D4, D3, the negative pole of D2 connects, K1, K2, the negative electrode of K3 respectively with D5, D6, be connected to respectively again after the positive pole of D7 connects three of external terminal part exchange external terminals ~ on, D5, D6, the negative pole of D7 link together and be connected to the direct current external terminal of external terminal part+on, on the gate pole that two ends of C2 receive K1 respectively and negative electrode, on the gate pole that two ends of C3 receive K2 respectively and negative electrode, on the gate pole that two ends of C4 receive K3 respectively and negative electrode,
External terminal part includes direct current external terminal+, direct current external terminal-, exchanges external terminal ~ tri-, ac terminal regardless of phase sequence.
3. AD current transformer according to claim 1, is characterized in that: base plate have employed rectangle aluminum-based copper-clad plate a slice, and whole components and parts use paster technique to be assembled on aluminum-based copper-clad plate; The area of aluminum-based copper-clad plate is 60 millimeters × 40 millimeters, and thickness of slab is 1.5 millimeters, and the overall dimension after assembling is 60 millimeters × 40 millimeters × 7 millimeters; Thyristor K1, thyristor K2, thyristor K3 are evenly distributed along a long side direction of rectangle aluminum-based copper-clad plate, and rectifying tube D5, rectifying tube D6, rectifying tube D7 are evenly distributed along another long side direction; At aluminum-based copper-clad plate on the surface, the circular conductive test point of 4 diameters 1.8 millimeters is provided with; Product loads encapsulation and moulds in shell, five external terminals of device, adopt silver-coated copper wire to mould hole, five gardens, shell front from encapsulation to draw, front is separately provided with one, the hole, garden for pouring into liquid epoxy, front is also provided with mark "+,-, ~ " symbol, encapsulation is moulded shell two end and is provided with fixing hole, garden and each one of slotted eye, and the overall dimension that shell is moulded in encapsulation is 80 millimeters × 42 millimeters × 10 millimeters.
4. AD current transformer according to claim 2, is characterized in that: base plate have employed rectangle aluminum-based copper-clad plate a slice, and whole components and parts use paster technique to be assembled on aluminum-based copper-clad plate; The area of aluminum-based copper-clad plate is 48 millimeters × 44 millimeters, and thickness of slab is 1.5 millimeters, and the overall dimension after assembling is 48 millimeters × 44 millimeters × 7 millimeters; Thyristor K1, thyristor K2, thyristor K3 are evenly distributed along a long side direction of rectangle aluminum-based copper-clad plate, and rectifying tube D5, rectifying tube D6, rectifying tube D7 are evenly distributed along another long side direction; At aluminum-based copper-clad plate on the surface, the circular conductive test point of 4 diameters 1.8 millimeters is provided with; Product loads encapsulation and moulds in shell, five external terminals of device, adopt silver-coated copper wire to mould hole, five gardens, shell front from encapsulation to draw, front is separately provided with one, the hole, garden for pouring into liquid epoxy, front is also provided with mark "+,-, ~ " symbol, encapsulation is moulded shell two end and is provided with fixing hole, garden and each one of slotted eye, and the overall dimension that shell is moulded in encapsulation is 68 millimeters × 46 millimeters × 10 millimeters.
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| CN106533190A (en) * | 2015-09-09 | 2017-03-22 | 程德明 | Ad converter |
| CN106533190B (en) * | 2015-09-09 | 2019-05-21 | 程德明 | AD current transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Jianye Inventor before: Cheng Deming Inventor before: Cheng Xuefei Inventor before: Wang Lingzhen Inventor before: Cheng Ziqi |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: New high-tech industrial park of new electronic components in Qimen County, Huangshan City, Anhui Province Patentee after: HUANGSHAN GUIDING ELECTRONICS CO., LTD. Address before: 245600 Xinxing Road, Qimen County, Huangshan City, Anhui Province, No. 63 Patentee before: Cheng Deming |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20190521 |