CN202712968U - Intelligent digital static switch - Google Patents

Abstract

The utility model provides an intelligent digital static switch, belonging to the technical field of low-voltage electrical appliances. The intelligent digital static switch comprises a signal detection circuit, a DSP control circuit, a digital trigger circuit, and an LC resonant auxiliary current conversion circuit, wherein the signal detection circuit is connected with the LC resonant auxiliary current conversion circuit and a primary power supply or a spare power supply, the DSP control circuit is connected with the signal detection circuit and the digital trigger circuit, the digital trigger circuit is connected with the LC resonant auxiliary current conversion circuit, and the LC resonant auxiliary current conversion circuit is connected with the primary power supply or the spare power supply for power output. The intelligent digital static switch has the advantages that: the requirements for high precision and real-time performance of the system are satisfied; a high-power pulse output circuit is specially designed; the control mode is flexible and diversified, and the reliability is high; and a good application platform is provided for the thyristor trigger circuit to realize miniaturization, digitization and intelligentization, and the LC resonant auxiliary current conversion circuit is adopted to realize fast seamless switching.

Description

A kind of digital-type intelligent static switch

Technical field

The utility model belongs to the low voltage electrical apparatus technology field, be specifically related to a kind of digital-type intelligent static switch for realizing the uninterruptible power system switching controls, relate in particular to and a kind ofly uninterruptedly exchange independent electric power supply at the static switch that is switched to AC bypass power supply for subsequent use by primary ac power supply for two-way

Background technology

In recent years, increasing Utilities Electric Co. is considered as main service item with the supply power mode of duplicate supply, in order to promote the power supply quality reliability.Load improves the power quality problem for sensitiveness, and static switch becomes a kind of very attractive power quality subject under discussion.Static switch claims again rest switch, and it is a kind of noncontacting switch, is a kind of alternating-current switch that forms with two controllable silicon reverse parallel connections, and its closed and disconnected is controlled by logic controller.Be divided into conversion hysteria and and two kinds of types.The conversion hysteria switch is mainly used in the system of two-way Power supply, and its effect is to realize from one road automatic switchover to another road; And the type switch is mainly used in shunt chopper and civil power or many inverters.Existing conversion hysteria static switch only has general translation function, and " seamless " that seldom can reach between the dual power supply switches fast.Switch fast if can realize " seamless ", can ensure that then computer system or other electron electric power equipment work on the correspondence that has a power failure to user's certain hour after power failure, thereby so that the user can not affect work or obliterated data because of power failure.

At present, thyristor is the main power section of static switch, is connected between power supply and the load, realizes that AC power is to the uninterrupted power supply of load.Semiconductor device is with respect to mechanical switch, and conduction loss increases, but in useful life, the aspects such as switching time are with the obvious advantage.Adopt semiconductor device to make switch, turning on and off Shi Buhui generation spark, avoided and may the impact that load produces have been affected; Mechanical switch easily produces fatigue, and the life-span is short, and the semiconductor device life-span can reach more than 10 years; The switching speed of mechanical switch is wanted hundreds of milliseconds at least, and the semiconductor device switching speed is then at Microsecond grade, and the switching of circuit can be finished in some milliseconds usually.And the semiconductor device of relative other equal-wattage grades of thyristor has low cost, easily driving, overload capacity by force and the advantage of high reliability, is fit to very much be applied to the high equipment of this reliability requirement of static switch.But, if the thyristor gate leve adopts analog trigger circuitry, want to debug relatively difficulty of more satisfactory effect, and have the shortcomings such as control precision is lower, symmetry is relatively poor, temperature influence is larger.

In view of above-mentioned prior art, be necessary existing static switch is improved, technical scheme described below produces under this background

Summary of the invention

The purpose of this utility model is to provide a kind of digital-type intelligent static switch, carries out online detecting and the Mathematical treatment of duplicate supply; Primary power cource or stand-by power supply occur unusual, very first time triggered digital signal, first with primary power cource or the stand-by power supply change of current to the resonance auxiliary converter circuit, again by the change of current of resonance auxiliary converter circuit to stand-by power supply or primary power cource, thereby realize continual power-supply system switching controls.

The purpose of this utility model is achieved like this, a kind of digital-type intelligent static switch, comprise signal deteching circuit, DSP control circuit, digital flip flop, LC resonance auxiliary converter circuit, signal deteching circuit connects LC resonance auxiliary converter circuit and primary power cource or stand-by power supply, the DSP control circuit connects signal deteching circuit and digital flip flop, digital flip flop is connected with LC resonance auxiliary converter circuit, LC resonance auxiliary converter circuit connects primary power cource or stand-by power supply, and carries out power supply output.

In a specific embodiment of the present utility model, the digital-type intelligent static switch also comprises status alert circuit and RS232 telecommunication circuit, and described status alert circuit is connected with digital flip flop, and described RS232 telecommunication circuit is connected with the DSP control circuit.

In another specific embodiment of the present utility model, described signal deteching circuit comprises sensor detection circuit and detection signal treatment circuit, described sensor detection circuit and LC resonance auxiliary converter circuit are connected stand-by power supply and are connected with primary power cource, described detection signal treatment circuit is connected with the DSP control circuit with sensor detection circuit.

In another specific embodiment of the present utility model, described sensor detection circuit comprises voltage sensor U9, current sensor U26, resistance R 4～R6 and capacitor C 1, C2, C198, C199, one end of resistance R 4 and 1 pin of current sensor U26 connect the A phase line of primary power cource or stand-by power supply, the end of the other end connecting resistance R5 of resistance R 4, the end of the other end connecting resistance R6 of resistance R 5,1 pin of another termination voltage sensor U9 of resistance R 6,3 pin of voltage sensor U9 and 3 pin of current sensor U26 access respectively the input of detection signal treatment circuit separately, 601 ends in the 2 pin access LC resonance auxiliary converter circuit 4 of current sensor U26,4 pin of voltage sensor U9, one end of capacitor C 2,4 pin of current sensor U26 and an end of capacitor C 199 meet DC power supply+15V jointly, 5 pin of voltage sensor U9, one end of capacitor C 1,5 pin of current sensor U26 and an end of capacitor C 198 meet DC power supply-15V, the other end of capacitor C 1 jointly, the other end of capacitor C 2,2 pin of voltage sensor U9, the other end common ground of the other end of capacitor C 198 and capacitor C 199.

In another specific embodiment of the present utility model, described detection signal treatment circuit comprises resistance R 26～R28, R37～R40, R45～R48, rheostat W2, W3, capacitor C 12, C13, C25, C26, C28, voltage stabilizing didoe D6, D7, operational amplifier U1A, U1B, U1C and voltage stabilizing chip U15, the end of one termination capacitor C12 of resistance R 26, one end of the negative pole of voltage stabilizing didoe D6 and resistance R 27, and as the input of detection signal treatment circuit, the positive pole of voltage stabilizing didoe D6 connects the positive pole of voltage stabilizing didoe D7,10 pin of another termination operational amplifier U1C of resistance R 27,9 pin of operational amplifier U1C connect an end of 8 pin and resistance R 28, one end of another termination capacitor C 13 of resistance R 28 and 1 pin of rheostat W3,2 pin of rheostat W3, the end of the 3 pin connecting resistance R46 of rheostat W3,6 pin of operational amplifier U1B and an end of resistance R 48, the negative pole of another termination capacitor C 26 of resistance R 46, one end of capacitor C 25, one end of resistance R 39 and 1 pin of operational amplifier U1A, the end of the other end connecting resistance R38 of resistance R 39 and 2 pin of operational amplifier U1A, the end of the other end connecting resistance R40 of resistance R 38,3 pin of rheostat W2 and 2 pin, the end of the 3 pin connecting resistance R37 of operational amplifier U1A, the end of the 5 pin connecting resistance R45 of operational amplifier U1B, 7 pin of another termination operational amplifier U1B of resistance R 48 and an end of resistance R 47, and output 306 ends that become the detection signal treatment circuit are connected to 170 pin of the dsp chip U13 of DSP control circuit 2,2 pin of one end of another termination capacitor C 28 of resistance R 47 and voltage stabilizing chip U15,4 pin of operational amplifier U1A meet DC power supply+15V, 11 pin of operational amplifier U1A meet DC power supply-15V, 1 of voltage stabilizing chip U15,16 pin meet DC power supply+3.3V, 1 pin of rheostat W2 meets reference voltage 2.5V, the other end of resistance R 26, the other end of capacitor C 12, the negative pole of voltage stabilizing didoe D7, the other end of capacitor C 13, the other end of resistance R 40, the other end of resistance R 37, the other end of capacitor C 25, the positive pole of capacitor C 26, the other end of resistance R 45,8 of the other end of capacitor C 28 and voltage stabilizing chip U15,9 pin common grounds.

Also have in the specific embodiment of the present utility model, described digital flip flop comprises duplicate supply transducer U11, resistance R 69～R72, R77～R79, R145, R146, R236, capacitor C 35, C36, C48, optocoupler O1, transformer TC, diode D13, D14, D16, D17, voltage stabilizing didoe D15, LED 7, transistor V1 and exclusion R75, R76,2 pin of exclusion R75 connect 3 pin of optocoupler O1 and 2 pin of duplicate supply transducer U11, the end of the 2 pin connecting resistance R77 of optocoupler O1, the end of the 6 pin connecting resistance R78 of optocoupler O1, the end of the other end connecting resistance R79 of resistance R 78, the grid of the negative pole of diode D17 and transistor V1, the drain electrode of transistor V1 connects the negative pole of voltage stabilizing didoe D15 and 1 pin of transformer TC, the positive pole of voltage stabilizing didoe D15 connects the positive pole of diode D14, the negative pole of diode D14 connects an end of capacitor C 48, one end of resistance R 145 and 2 pin of transformer TC, 3 pin of transformer TC connect the positive pole of diode D13, the negative pole of diode D13 connects the negative pole of diode D16, one end of the positive pole of LED 7 and resistance R 146, the other end of resistance R 146 is as an output 424 ends of circuit and connect 605 ends of LC resonance auxiliary converter circuit 4,4 pin of transformer TC connect the positive pole of diode D16 and an end of resistance R 236, as another output 425 ends of circuit and be connected to 606 ends of LC resonance auxiliary converter circuit 4, the negative pole of the other end connecting luminous diode LED7 of resistance R 236,3 of exclusion R75,4,5,6,7,8,9 pin connect respectively 3 of duplicate supply transducer U11,5,6,8,9,11,12 pin, 13 of duplicate supply transducer U11,14,16,17,19,20 pin run in respectively and hinder 2 of R76,3,4,5,6,7 pin, the end of the 24 pin connecting resistance R72 of duplicate supply transducer U11, the end of the 25 pin connecting resistance R70 of duplicate supply transducer U11,47 of duplicate supply transducer U11,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26 pin meet respectively 92 of dsp chip U13 in the DSP control circuit 2,93,94,95,98,101,102,104,106,107,109,116,117,122,123,124 pin, the end of the 1 pin connecting resistance R71 of duplicate supply transducer U11, the end of the 48 pin connecting resistance R69 of duplicate supply transducer U11, the other end of the other end of capacitor C 48 and resistance R 145 meets DC power supply+24V jointly, 8 pin of optocoupler O1 meet DC power supply+15V, the other end of resistance R 77,31 of duplicate supply transducer U11, one end of 42 pin and capacitor C 35,1 pin of exclusion R75 and 1 pin of exclusion R76 meet DC power supply+5V jointly, 7 of duplicate supply transducer U11,18 pin, one end of capacitor C 36, the other end of the other end of resistance R 71 and resistance R 72 meets DC power supply+3.3V jointly, 5 pin of optocoupler 01, the other end of resistance R 79, the positive pole of diode D17, the source electrode of transistor V1, the other end of capacitor C 35, the other end of resistance R 69, the other end of capacitor C 36,4 of the other end of resistance R 70 and duplicate supply transducer U11,10,15,21,28,34,39,45 pin common grounds.

More of the present utility model and in specific embodiment, described DSP control circuit comprises dsp chip U13, memory chip U14, connector J1, socket J2, crystal oscillator XL1, resistance R 137～R144 and capacitor C 37～C39, capacitor C 47, the end of the 1 pin connecting resistance R138 of connector J1,2 pin of connector J1 connect 17 pin of dsp chip U13, the end of the 140 pin connecting resistance R137 of dsp chip U13,135 of dsp chip U13,126,131,2 of 127 pin difference combination hub J2,1,3,7 pin, 9 of the 136 pin combination hub J2 of dsp chip U13,11 pin, the end of the 137 pin connecting resistance R143 of dsp chip U13 and 13 pin of socket J2, the end of the 146 pin connecting resistance R144 of dsp chip U13 and 14 pin of socket J2, the end of the 160 pin connecting resistance R139 of dsp chip U13 and an end of capacitor C 37,77 pin of dsp chip U13 connect 3 pin of crystal oscillator XL1, the end of the 161 pin connecting resistance R141 of dsp chip U13, the end of the 159 pin connecting resistance R140 of dsp chip U13,42 of dsp chip U13,84,133,158,156,152,148,144,141,138,132,130,125,121,118,111,108,103,85,80,43,18,21,24,27,30,33,36,39,54,65,68,73,74,96,97,139,147 pin meet respectively 41 of memory chip U14,17,6,28,44,43,42,27,26,25,24,23,22,21,20,19,18,5,4,3,2,1,7,8,9,10,13,14,15,16,29,30,31,32,35,36,37,38 pin, the end of the 16 pin connecting resistance R142 of dsp chip U13,10 pin of dsp chip U13 connect the positive pole of capacitor C 38,11 pin of dsp chip U13 connect the positive pole of capacitor C 39,170 pin of dsp chip U13 connect output 306 ends of detection signal treatment circuit, 171 of dsp chip U13,172,173,174,5,4,3,2 pin access respectively the output of other detection signal treatment circuit, the other end of resistance R 138, the other end of resistance R 137, the other end of resistance R 139, the other end of resistance R 140, the other end of resistance R 141, one end of capacitor C 47,4 pin of crystal oscillator XL1,166 of dsp chip U13,14,1,13,31,64,81,114,145,69 pin, 11 of memory chip U14,33 pin, 5 of socket J2,6 pin, the other end of the other end of resistance R 143 and resistance R 144 meets DC power supply+3.3V jointly, 162 of dsp chip U13,23,37,56,75,100,112,128,143,154 pin meet DC power supply+1.8V jointly, 3 pin of connector J1, the other end of capacitor C 37, the other end of capacitor C 47,2 pin of crystal oscillator XL1,176 of dsp chip U13,163,165,15,175,12,153,142,129,120,113,105,99,86,78,70,58,52,38,32,19 pin, the other end of resistance R 142, the negative pole of capacitor C 38, the negative pole of capacitor C 39,40 of memory chip U14,39,12,34 pin, 4 of socket J2,8,10,12 pin common grounds.

In of the present utility model and then specific embodiment, described LC resonance auxiliary converter circuit comprises thyristor T1～T10, surge absorber (piezo-resistance) RV1, inductance L 1 and capacitor C 195, thyristor T1 anode be connected negative electrode with thyristor T2 and connect, and be connected to the A phase line of stand-by power supply as 603 ends of circuit, the gate pole of thyristor T1 is 605 ends of circuit, the negative electrode of thyristor T1 connects the anode of thyristor T2, the anode of thyristor T10, the negative electrode of thyristor T9, the anode of the negative electrode of thyristor T4 and thyristor T5, and become 606 ends and 604 ends of circuit, 604 ends are the final output of power supply A phase, the negative electrode of thyristor T10 connects the anode of thyristor T9, the negative electrode of thyristor T7, the negative electrode of the anode of thyristor T8 and thyristor T6, and connect the A phase line of primary power cource as 601 ends of circuit, the anode of thyristor T7 connects an end of inductance L 1 and the anode of thyristor T4, the negative electrode of another termination thyristor T3 of inductance L 1 and an end of capacitor C 195, the anode of thyristor T3 connects the end of surge absorber RV1, the other end of surge absorber RV1 is as B phase or the C phase line of 602 termination primary power cources of circuit, the negative electrode of another termination thyristor T5 of capacitor C 195, the negative electrode of the anode of thyristor T6 and thyristor T8.

Of the present utility model again more and in specific embodiment, described status alert circuit comprises resistance R 248, R249, LED 13 and LED14,22 pin of duplicate supply transducer U11 in the one termination digital flip flop of resistance R 248, the negative pole of the other end sending and receiving optical diode LED13 of resistance R 248, the positive pole of Light-Emitting Diode LED13 connects 8 pin of the exclusion R76 in the digital flip flop, 23 pin of duplicate supply transducer U11 in the one termination digital flip flop of resistance R 249, the negative pole of the other end sending and receiving optical diode LED14 of resistance R 249, the positive pole of Light-Emitting Diode LED14 connects 9 pin of the exclusion R76 in the digital flip flop.

In again of the present utility model and then specific embodiment, described RS232 telecommunication circuit comprises isolating chip U16, level transferring chip U17, capacitor C 40～C46,6 of isolating chip U16,7 pin meet 533 of dsp chip U13 in the DSP control circuit, 534 pin, 2 of isolating chip U16,3 pin meet respectively 11 of level transferring chip U17,12 pin, 1 pin of level transferring chip U17 connects an end of capacitor C 42,3 pin of another termination level transferring chip U17 of capacitor C 42,2 pin of level transferring chip U17 connect an end of capacitor C 43,4 pin of level transferring chip U17 connect an end of capacitor C 44,5 pin of another termination level transferring chip U17 of capacitor C 44,6 pin of level transferring chip U17 connect an end of capacitor C 46,13 of level transferring chip U17,14 pin are used for communicating with the outside, 16 pin of level transferring chip U17,1 pin of isolating chip U16, one end of capacitor C 40, one end of capacitor C 41, one end of the other end of capacitor C 43 and capacitor C 45 meets DC power supply+5V jointly, 8 pin of isolating chip U16 meet DC power supply+3.3V, 4 of isolating chip U16,5 pin, the other end of capacitor C 40, the other end of capacitor C 41,8 of level transferring chip U17,10,15 pin, the other end common ground of the other end of capacitor C 45 and capacitor C 46.

The utility model is owing to adopted said structure, and the beneficial effect of obtaining is: system for kernel control chip designs the thyristor digital circuits for triggering, satisfies high accuracy and the requirement of real-time of system with dsp chip; Simultaneously this system is for the large requirement of the trigger current of large capacity thyristor, specialized designs powerful impulse output circuit; The design's structure does not have complicated peripheral logical circuit, has given full play to the characteristics that the Modern DSP chip speed is fast, computing capability is strong, is aided with cleverly hardware designs, so that control form is versatile and flexible, reliability is high; It is realized miniaturization, digitlization and intellectuality for thyristor gating circuit a good application platform is provided, and utilizes LC resonance auxiliary converter circuit to realize quick seamless handoff.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

Fig. 2 is the electrical schematic diagram of the sensor detection circuit of the utility model primary power cource A phase line.

Fig. 3 is the electrical schematic diagram of the detection signal treatment circuit of the utility model primary power cource A phase voltage.

Fig. 4 is the electrical connection graph of digital flip flop of the present utility model and status alert circuit.

Fig. 5 is the electrical schematic diagram of DSP control circuit of the present utility model.

Fig. 6 is the electrical schematic diagram of LC resonance auxiliary converter circuit of the present utility model.

Fig. 7 is the commutation course schematic diagram of LC resonance auxiliary converter circuit of the present utility model.

Fig. 8 is switching sequence of the present utility model and main waveform schematic diagram.

Fig. 9 is the electrical schematic diagram of RS232 telecommunication circuit of the present utility model.

Embodiment

In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection range of the present utility model according to the utility model design.

See also Fig. 1, a kind of digital-type intelligent static switch, comprise signal deteching circuit 1, DSP control circuit 2, digital flip flop 3, LC resonance auxiliary converter circuit 4, signal deteching circuit 1 connects LC resonance auxiliary converter circuit 4 and primary power cource or stand-by power supply, DSP control circuit 2 connects signal deteching circuit 1 and digital flip flop 3, digital flip flop 3 is connected with LC resonance auxiliary converter circuit 4, LC resonance auxiliary converter circuit 4 connects primary power cource or stand-by power supply, and carries out power supply output.Described digital-type intelligent static switch also comprises status alert circuit 5 and RS232 telecommunication circuit 6, and described status alert circuit 5 is connected with digital flip flop 3, and described RS232 telecommunication circuit 6 is connected with DSP control circuit 2.Primary power cource and stand-by power supply carry out electric current and voltage by signal deteching circuit 1 to be detected and processes, the sampled signal that obtains after treatment is admitted to the A/D modular converter of the dsp chip U13 in the DSP control circuit 2, dsp chip U13 makes corresponding mathematical analysis according to the signal that collects, in order to detect the anomaly that primary power cource/stand-by power supply occurs, then the very first time is by digital flip flop 3 triggered digital signals, this signal controlling LC resonance auxiliary converter circuit 4 carries out power supply output, and status alert circuit 5 is made corresponding status alert demonstration therebetween.

Described signal deteching circuit 1 comprises sensor detection circuit and detection signal treatment circuit, described sensor detection circuit and LC resonance auxiliary converter circuit 4 are connected stand-by power supply and are connected with primary power cource, described detection signal treatment circuit is connected with the DSP control circuit with sensor detection circuit and is connected.See also Fig. 2, described sensor detection circuit comprises voltage sensor U9, current sensor U26, resistance R 4～R6 and capacitor C 1, C2, C198, C199, in the utility model, described voltage sensor U9 adopts LV28-P, and current sensor U26 adopts LA28-NP.The operation principle of voltage sensor U9 and current sensor U26 is roughly the same, and both differences are: when the applied voltage transducer, for measuring voltage, be on the winding of former limit series resistance R4, R5, R6, in order to obtain suitable electric current at former limit winding; The former limit number of turn of voltage sensor generally is not a circle, but multiturn.There is shown primary power cource A through the electrical schematic diagram of transducer, the current signal of circuit 201,202 ends accesses respectively the input of detection signal treatment circuit separately, circuit 203 ends, is 601 ends in the 2 pin accesses LC resonance auxiliary converter circuit 4 of current sensor U26.The sensor detection circuit of the three-phase of primary power cource B phase, C phase and stand-by power supply is identical with circuit shown in Figure 2 in addition.See also Fig. 3, described detection signal treatment circuit comprises resistance R 26～R28, R37～R40, R45～R48, rheostat W2, W3, capacitor C 12, C13, C25, C26, C28, voltage stabilizing didoe D6, D7, operational amplifier U1A, U1B, U1C and voltage stabilizing chip U15, in the utility model, described operational amplifier U1A, U1B, U1C adopt ADA4851-4, and voltage stabilizing chip U15 adopts SDA24N16.The equal output current signal of voltage and current transducer shown in Fig. 2, A inputs through circuit input end 301 through the detectable voltage signals of voltage sensor among the figure, indirectly obtain the current output sensor size by the voltage on the measuring resistance R26, thereby derive the input power signal magnitude.In order to prevent that abrupt voltage wave from occuring unusually, be connected with voltage stabilizing didoe D6 and D7.302 place's signals then obtain 303 place's voltage signals through a follower among the figure.Because this signal is between-2.4V to 2.4V, and the analog input voltage of the A/D modular converter of dsp chip U13 is 0～3V, so at this reference voltage that need superpose.304 place's signals are linear adjustable voltage signals, this signal obtains 305 place's voltage signals and 303 place's voltage signals obtain output 306 ends after operational amplifier U1B superposes simulation real-time sampling signal after oppositely through operational amplifier U1A, the signal of output 306 ends is in rheostat W2 and W3 can linear transfer to 0 to 3V voltage range, the signal of output 306 ends is delivered to 535 ends of the A/D modular converter of the dsp chip U13 in the DSP control circuit 2, i.e. 170 pin of dsp chip U13 in the DSP control circuit 2 after voltage stabilizing chip U15 voltage stabilizing the most at last.3～7 pin of voltage stabilizing chip U15,10～12 pin are other several roads sampled signal voltage stabilizing among the figure.Equally, primary power cource A sends into respectively 536～543 ports of the A/D modular converter of the dsp chip in the DSP control circuit 2 after the electric current and voltage detection signal of detection signal, B phase, C phase and the stand-by power supply of current sensor is all by the detection signal treatment circuit shown in Fig. 3.

See also Fig. 4, be the electrical connection graph of digital flip flop of the present utility model and status alert circuit.Described digital flip flop 3 comprises duplicate supply transducer U11, resistance R 69～R72, R77～R79, R145, R146, R236, capacitor C 35, C36, C48, optocoupler O1, transformer TC, diode D13, D14, D16, D17, voltage stabilizing didoe D15, LED 7, transistor V1 and exclusion R75, R76, in the utility model, duplicate supply transducer U11 adopts SN74ALVC164245DL, optocoupler O1 adopts HCPL3120, and transformer TC adopts KCB6743.Described status alert circuit 5 comprises resistance R 248, R249, LED 13 and LED14.401～416 ports of circuit shown in the figure connect the universaling I/O port of the dsp chip in the DSP control circuit 2, and namely 47 of duplicate supply transducer U11,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26 pin connect respectively 92,93,94,95,98,101,102,104,106,107,109,116,117,122,123,124 pin of the dsp chip U13 in the DSP control circuit 2.For the sake of simplicity, only show the digital flip flop of 401 ports among the figure, namely finally can obtain the digital trigger signal between 424 and 425 ports, 426～438 ports connect respectively as 420 ports circuit thereafter, and principle is identical, so the diagram of omission.517～532 ports of dsp chip U13 connect respectively as 401 ports circuit thereafter, and the circuits for triggering principle is identical, so also omit diagram.The effect of exclusion R75 and R76 mainly contains 2 points among the figure: the one, and the output that increases dsp chip U13 drives, and the 2nd, making system's initial time optocoupler O1 input 420 ends that power on is high level, optocoupler O1 is in not on-state.Optocoupler O1 mainly plays the digital-to-analogue buffer action, and its output signal is connected to grid and the source electrode of transistor V1, is used for controlling opening and closing of transistor drain and source electrode.Diode D14 and D15 are used for preventing that 422 end supply voltage generation surgings are unusual, play the effect of stabilizing transformer TC input terminal voltage.Transformer TC output is connected to LED 7, as opening indicator light.One output, 424 ends of circuit are connected to 605 ends of LC resonance auxiliary converter circuit 4, and another output 425 ends of circuit are connected to 606 ends of LC resonance auxiliary converter circuit 4.LED 13 and LED14 control light on and off by dsp chip U13 among the figure in addition, show as status alert.

See also Fig. 5, described DSP control circuit 2 comprises dsp chip U13, memory chip U14, connector J1, socket J2, crystal oscillator XL1, resistance R 137～R144 and capacitor C 37～C39, capacitor C 47, in the utility model, described dsp chip U13 is TMS320F2812, memory chip U14 adopts IS61LV51216-8T1, for 512K *16 High speed outer extension memory, socket J2 are Header 7X2, and crystal oscillator XL1 is XO53-30M.U13A～U13D is four parts of dsp chip U13 among the figure; Connector J1 place connection status decision systems is to start or start from Zone7 external memory space from Boot ROM; Socket J2 is used for connecting simulator; 535～543 is the connectivity port of A/D sampling module among the U13B; 501～516 ends of U13D part are connected respectively in 401～416 ends of the digital flip flop 3 shown in Fig. 4, are used for control figure triggering signal and status alert and show that 533,534 ends are the SCIA mouth, are used for RS232 communication.

See also Fig. 6, Fig. 6 is LC resonance auxiliary converter circuit figure of the present utility model, described LC resonance auxiliary converter circuit 4 comprises thyristor T1～T10, surge absorber (piezo-resistance) RV1, inductance L 1 and capacitor C 195, wherein, thyristor T1～T10 adopts TYN825, and surge absorber RV1 is MYG-40D210K.Only provided A phase commutation course among the figure, other phase converter circuit is identical.Circuit 601 terminations enter primary power cource A phase, i.e. 203 ends among Fig. 2, and 603 terminations enter stand-by power supply A phase, and 605,606 ends are respectively from the triggering signal of 424,425 ends among Fig. 4.604 ends are mutually finally output of power supply A.In commutation, resonant capacitance C195 must have enough initial voltages just can carry out commutation to mains current, satisfies each thyristor required deadline.602 terminations enter another phase voltage in the primary power cource, by conducting thyristor T3, T6, utilize the line voltage between 601,602 ends to charge to capacitor C 195.At a time, thyristor T3 and T6 are triggered, and the thyristor in other bridge-type resonance bypass must be closed.When the instantaneous value of line voltage exceeded surge absorber RV1 nominal voltage value, charging current then began to flow.When surge absorber RV1 got back to high impedance status, charged electrical failed to be convened for lack of a quorum and drops to zero simultaneously.At this moment, the voltage of capacitor C 195 is the residual quantity of voltage between lines and surge absorber RV1 nominal voltage.This charging method can continue to replenish not enough electric weight, and electric weight can be maintained at preset value, and does not need the applied voltage source.

Shown in Fig. 7,8, Fig. 7 is the commutation course schematic diagram of LC resonance auxiliary converter circuit of the present utility model, shows the circuit state of stages; Fig. 8 is switching sequence of the present utility model and main waveform schematic diagram.Primary power cource side thyristor converter process roughly is divided into following several stages: stage l (t0～t1): during voltage no exceptions phenomenon, thyristor T9, T10 gate-drive are opened, load current flows through thyristor T9, T10, the gate-drive of other thyristors is closed, and powered to the load by primary power cource this moment.Initial voltage Vo is arranged on the resonant capacitance C195; Stage 2 (tl～t2): when a certain moment DSP control circuit detects electric voltage exception, at first judged the thyristor of current conducting by current i pri.Thyristor T9 conducting when supposing to switch, open so simultaneously thyristor T4, T8, this moment, capacitor C 195 and inductance L 1 began resonant discharge, and resonance current ilc rises, the anode current i9 of thyristor T9 reduces gradually, and this moment is by i9 and ilc shared load current iload; Stage 3 (t2～t3): when the t2 moment, resonance current ilc equaled load current iload, when namely i9 dropped to zero, thyristor T10 began conducting.Be forced off the voltage of deenergizing, to zero (forward voltage drop when ignoring the thyristor conducting), resonance continues by clamp.The gate-drive of cutoff thyristor T9, T10 during this time, the gate-drive of cutoff thyristor T4, T8; Stage 4 (t3～t4): resonance current ilc begins to descend after through resonance current peak I peak, and t3 constantly ilc descends and when equaling iload, i10 drops to zero, thyristor T10 reverse blocking afterwards, and load current all flows through thyristor T4, T8; Stage 5 (t4～t5): after forward voltage appears in thyristor T1 two ends, open thyristor T1, T2 gate-drive, load current begins by thyristor T4, the T8 change of current to thyristor T1; Stage 6 (〉 t5): t5 constantly ilc drops to zero, and the current i 1 that flows through thyristor T1 equals load current iload, and thyristor T4, T8 turn-off afterwards.So far handoff procedure all finishes.If the load current direction changes in stage 2 or stage 3, detect load current and flow through thyristor T10, need to carry out the corresponding secondary change of current this moment to thyristor T10.

In addition, a kind of digital-type intelligent static switch of the utility model also comprises RS232 telecommunication circuit 6.As shown in Figure 9, described RS232 telecommunication circuit 6 comprises isolating chip U16, level transferring chip U17 and capacitor C 40～C46, and in the utility model, described isolating chip U16 is ADuM1201, and level transferring chip U17 is MAX232.Two inputs 901 of circuit, 902 ends are connected to dsp chip U13 among Fig. 5 among the figure SCIA mouth 533,534 ends; 903,904 ends are used for and PERCOM peripheral communication, realize that this module and host computer communicate

Claims (10)

1. A kind of digital-type intelligent static switch, it is characterized in that comprising signal deteching circuit (1), DSP control circuit (2), digital flip flop (3), LC resonance auxiliary converter circuit (4), signal deteching circuit (1) connects LC resonance auxiliary converter circuit (4) and primary power cource or stand-by power supply, DSP control circuit (2) connects signal deteching circuit (1) and digital flip flop (3), digital flip flop (3) is connected with LC resonance auxiliary converter circuit (4), LC resonance auxiliary converter circuit (4) connects primary power cource or stand-by power supply, and carries out power supply output.

2. A kind of digital-type intelligent static switch according to claim 1, characterized by further comprising status alert circuit (5) and RS232 telecommunication circuit (6), described status alert circuit (5) is connected with digital flip flop (3), and described RS232 telecommunication circuit (6) is connected with DSP control circuit (2).

3. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described signal deteching circuit (1) comprises sensor detection circuit and detection signal treatment circuit, described sensor detection circuit and LC resonance auxiliary converter circuit (4) are connected stand-by power supply and are connected with primary power cource, described detection signal treatment circuit is connected 2 with sensor detection circuit with the DSP control circuit) be connected.

4. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described sensor detection circuit comprises voltage sensor U9, current sensor U26, resistance R 4～R6 and capacitor C 1, C2, C198, C199, one end of resistance R 4 and 1 pin of current sensor U26 connect the A phase line of primary power cource or stand-by power supply, the end of the other end connecting resistance R5 of resistance R 4, the end of the other end connecting resistance R6 of resistance R 5,1 pin of another termination voltage sensor U9 of resistance R 6,3 pin of voltage sensor U9 and 3 pin of current sensor U26 access respectively the input of detection signal treatment circuit separately, 601 ends in the 2 pin access LC resonance auxiliary converter circuits (4) of current sensor U26,4 pin of voltage sensor U9, one end of capacitor C 2,4 pin of current sensor U26 and an end of capacitor C 199 meet DC power supply+15V jointly, 5 pin of voltage sensor U9, one end of capacitor C 1,5 pin of current sensor U26 and an end of capacitor C 198 meet DC power supply-15V, the other end of capacitor C 1 jointly, the other end of capacitor C 2,2 pin of voltage sensor U9, the other end common ground of the other end of capacitor C 198 and capacitor C 199.

5. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described detection signal treatment circuit comprises resistance R 26～R28, R37～R40, R45～R48, rheostat W2, W3, capacitor C 12, C13, C25, C26, C28, voltage stabilizing didoe D6, D7, operational amplifier U1A, U1B, U1C and voltage stabilizing chip U15, the end of one termination capacitor C12 of resistance R 26, one end of the negative pole of voltage stabilizing didoe D6 and resistance R 27, and as the input of detection signal treatment circuit, the positive pole of voltage stabilizing didoe D6 connects the positive pole of voltage stabilizing didoe D7,10 pin of another termination operational amplifier U1C of resistance R 27,9 pin of operational amplifier U1C connect an end of 8 pin and resistance R 28, one end of another termination capacitor C 13 of resistance R 28 and 1 pin of rheostat W3,2 pin of rheostat W3, the end of the 3 pin connecting resistance R46 of rheostat W3,6 pin of operational amplifier U1B and an end of resistance R 48, the negative pole of another termination capacitor C 26 of resistance R 46, one end of capacitor C 25, one end of resistance R 39 and 1 pin of operational amplifier U1A, the end of the other end connecting resistance R38 of resistance R 39 and 2 pin of operational amplifier U1A, the end of the other end connecting resistance R40 of resistance R 38,3 pin of rheostat W2 and 2 pin, the end of the 3 pin connecting resistance R37 of operational amplifier U1A, the end of the 5 pin connecting resistance R45 of operational amplifier U1B, 7 pin of another termination operational amplifier U1B of resistance R 48 and an end of resistance R 47, and output 306 ends that become the detection signal treatment circuit are connected to 170 pin of the dsp chip U13 of DSP control circuit (2), 2 pin of one end of another termination capacitor C 28 of resistance R 47 and voltage stabilizing chip U15,4 pin of operational amplifier U1A meet DC power supply+15V, 11 pin of operational amplifier U1A meet DC power supply-15V, 1 of voltage stabilizing chip U15,16 pin meet DC power supply+3.3V, 1 pin of rheostat W2 meets reference voltage 2.5V, the other end of resistance R 26, the other end of capacitor C 12, the negative pole of voltage stabilizing didoe D7, the other end of capacitor C 13, the other end of resistance R 40, the other end of resistance R 37, the other end of capacitor C 25, the positive pole of capacitor C 26, the other end of resistance R 45,8 of the other end of capacitor C 28 and voltage stabilizing chip U15,9 pin common grounds.

6. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described digital flip flop (3) comprises duplicate supply transducer U11, resistance R 69～R72, R77～R79, R145, R146, R236, capacitor C 35, C36, C48, optocoupler O1, transformer TC, diode D13, D14, D16, D17, voltage stabilizing didoe D15, LED 7, transistor V1 and exclusion R75, R76,2 pin of exclusion R75 connect 3 pin of optocoupler O1 and 2 pin of duplicate supply transducer U11, the end of the 2 pin connecting resistance R77 of optocoupler O1, the end of the 6 pin connecting resistance R78 of optocoupler O1, the end of the other end connecting resistance R79 of resistance R 78, the grid of the negative pole of diode D17 and transistor V1, the drain electrode of transistor V1 connects the negative pole of voltage stabilizing didoe D15 and 1 pin of transformer TC, the positive pole of voltage stabilizing didoe D15 connects the positive pole of diode D14, the negative pole of diode D14 connects an end of capacitor C 48, one end of resistance R 145 and 2 pin of transformer TC, 3 pin of transformer TC connect the positive pole of diode D13, the negative pole of diode D13 connects the negative pole of diode D16, one end of the positive pole of LED 7 and resistance R 146, the other end of resistance R 146 is as an output 424 ends of circuit and connect 605 ends of LC resonance auxiliary converter circuit (4), 4 pin of transformer TC connect the positive pole of diode D16 and an end of resistance R 236, as another output 425 ends of circuit and be connected to 606 ends of LC resonance auxiliary converter circuit (4), the negative pole of the other end connecting luminous diode LED7 of resistance R 236,3 of exclusion R75,4,5,6,7,8,9 pin connect respectively 3 of duplicate supply transducer U11,5,6,8,9,11,12 pin, 13 of duplicate supply transducer U11,14,16,17,19,20 pin run in respectively and hinder 2 of R76,3,4,5,6,7 pin, the end of the 24 pin connecting resistance R72 of duplicate supply transducer U11, the end of the 25 pin connecting resistance R70 of duplicate supply transducer U11,47 of duplicate supply transducer U11,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26 pin meet respectively 92 of dsp chip U13 in the DSP control circuit (2), 93,94,95,98,101,102,104,106,107,109,116,117,122,123,124 pin, the end of the 1 pin connecting resistance R71 of duplicate supply transducer U11, the end of the 48 pin connecting resistance R69 of duplicate supply transducer U11, the other end of the other end of capacitor C 48 and resistance R 145 meets DC power supply+24V jointly, 8 pin of optocoupler O1 meet DC power supply+15V, the other end of resistance R 77,31 of duplicate supply transducer U11, one end of 42 pin and capacitor C 35,1 pin of exclusion R75 and 1 pin of exclusion R76 meet DC power supply+5V jointly, 7 of duplicate supply transducer U11,18 pin, one end of capacitor C 36, the other end of the other end of resistance R 71 and resistance R 72 meets DC power supply+3.3V jointly, 5 pin of optocoupler 01, the other end of resistance R 79, the positive pole of diode D17, the source electrode of transistor V1, the other end of capacitor C 35, the other end of resistance R 69, the other end of capacitor C 36,4 of the other end of resistance R 70 and duplicate supply transducer U11,10,15,21,28,34,39,45 pin common grounds.

7. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described DSP control circuit (2) comprises dsp chip U13, memory chip U14, connector J1, socket J2, crystal oscillator XL1, resistance R 137～R144 and capacitor C 37～C39, capacitor C 47, the end of the 1 pin connecting resistance R138 of connector J1,2 pin of connector J1 connect 17 pin of dsp chip U13, the end of the 140 pin connecting resistance R137 of dsp chip U13,135 of dsp chip U13,126,131,2 of 127 pin difference combination hub J2,1,3,7 pin, 9 of the 136 pin combination hub J2 of dsp chip U13,11 pin, the end of the 137 pin connecting resistance R143 of dsp chip U13 and 13 pin of socket J2, the end of the 146 pin connecting resistance R144 of dsp chip U13 and 14 pin of socket J2, the end of the 160 pin connecting resistance R139 of dsp chip U13 and an end of capacitor C 37,77 pin of dsp chip U13 connect 3 pin of crystal oscillator XL1, the end of the 161 pin connecting resistance R141 of dsp chip U13, the end of the 159 pin connecting resistance R140 of dsp chip U13,42 of dsp chip U13,84,133,158,156,152,148,144,141,138,132,130,125,121,118,111,108,103,85,80,43,18,21,24,27,30,33,36,39,54,65,68,73,74,96,97,139,147 pin meet respectively 41 of memory chip U14,17,6,28,44,43,42,27,26,25,24,23,22,21,20,19,18,5,4,3,2,1,7,8,9,10,13,14,15,16,29,30,31,32,35,36,37,38 pin, the end of the 16 pin connecting resistance R142 of dsp chip U13,10 pin of dsp chip U13 connect the positive pole of capacitor C 38,11 pin of dsp chip U13 connect the positive pole of capacitor C 39,170 pin of dsp chip U13 connect output 306 ends of detection signal treatment circuit, 171 of dsp chip U13,172,173,174,5,4,3,2 pin access respectively the output of other detection signal treatment circuit, the other end of resistance R 138, the other end of resistance R 137, the other end of resistance R 139, the other end of resistance R 140, the other end of resistance R 141, one end of capacitor C 47,4 pin of crystal oscillator XL1,166 of dsp chip U13,14,1,13,31,64,81,114,145,69 pin, 11 of memory chip U14,33 pin, 5 of socket J2,6 pin, the other end of the other end of resistance R 143 and resistance R 144 meets DC power supply+3.3V jointly, 162 of dsp chip U13,23,37,56,75,100,112,128,143,154 pin meet DC power supply+1.8V jointly, 3 pin of connector J1, the other end of capacitor C 37, the other end of capacitor C 47,2 pin of crystal oscillator XL1,176 of dsp chip U13,163,165,15,175,12,153,142,129,120,113,105,99,86,78,70,58,52,38,32,19 pin, the other end of resistance R 142, the negative pole of capacitor C 38, the negative pole of capacitor C 39,40 of memory chip U14,39,12,34 pin, 4 of socket J2,8,10,12 pin common grounds.

8. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described LC resonance auxiliary converter circuit (4) comprises thyristor T1～T10, surge absorber (piezo-resistance) RV1, inductance L 1 and capacitor C 195, thyristor T1 anode be connected negative electrode with thyristor T2 and connect, and be connected to the A phase line of stand-by power supply as 603 ends of circuit, the gate pole of thyristor T1 is 605 ends of circuit, the negative electrode of thyristor T1 connects the anode of thyristor T2, the anode of thyristor T10, the negative electrode of thyristor T9, the anode of the negative electrode of thyristor T4 and thyristor T5, and become 606 ends and 604 ends of circuit, 604 ends are the final output of power supply A phase, the negative electrode of thyristor T10 connects the anode of thyristor T9, the negative electrode of thyristor T7, the negative electrode of the anode of thyristor T8 and thyristor T6, and connect the A phase line of primary power cource as 601 ends of circuit, the anode of thyristor T7 connects an end of inductance L 1 and the anode of thyristor T4, the negative electrode of another termination thyristor T3 of inductance L 1 and an end of capacitor C 195, the anode of thyristor T3 connects the end of surge absorber RV1, the other end of surge absorber RV1 is as B phase or the C phase line of 602 termination primary power cources of circuit, the negative electrode of another termination thyristor T5 of capacitor C 195, the negative electrode of the anode of thyristor T6 and thyristor T8.

9. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described status alert circuit (5) comprises resistance R 248, R249, LED 13 and LED14,22 pin of duplicate supply transducer U11 in the one termination digital flip flop 3 of resistance R 248, the negative pole of the other end sending and receiving optical diode LED13 of resistance R 248, the positive pole of Light-Emitting Diode LED13 connects 8 pin of the exclusion R76 in the digital flip flop (3), 23 pin of duplicate supply transducer U11 in the one termination digital flip flop (3) of resistance R 249, the negative pole of the other end sending and receiving optical diode LED14 of resistance R 249, the positive pole of Light-Emitting Diode LED14 connects 9 pin of the exclusion R76 in the digital flip flop (3).

10. A kind of digital-type intelligent static switch according to claim 1, it is characterized in that described RS232 telecommunication circuit (6) comprises isolating chip U16, level transferring chip U17, capacitor C 40～C46,6 of isolating chip U16,7 pin meet 533 of dsp chip U13 in the DSP control circuit (2), 534 pin, 2 of isolating chip U16,3 pin meet respectively 11 of level transferring chip U17,12 pin, 1 pin of level transferring chip U17 connects an end of capacitor C 42,3 pin of another termination level transferring chip U17 of capacitor C 42,2 pin of level transferring chip U17 connect an end of capacitor C 43,4 pin of level transferring chip U17 connect an end of capacitor C 44,5 pin of another termination level transferring chip U17 of capacitor C 44,6 pin of level transferring chip U17 connect an end of capacitor C 46,13 of level transferring chip U17,14 pin are used for communicating with the outside, 16 pin of level transferring chip U17,1 pin of isolating chip U16, one end of capacitor C 40, one end of capacitor C 41, one end of the other end of capacitor C 43 and capacitor C 45 meets DC power supply+5V jointly, 8 pin of isolating chip U16 meet DC power supply+3.3V, 4 of isolating chip U16,5 pin, the other end of capacitor C 40, the other end of capacitor C 41,8 of level transferring chip U17,10,15 pin, the other end common ground of the other end of capacitor C 45 and capacitor C 46

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