CN204928773U - A voltage control moves looks pulse generator for excitation system - Google Patents
A voltage control moves looks pulse generator for excitation system Download PDFInfo
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- CN204928773U CN204928773U CN201520363972.7U CN201520363972U CN204928773U CN 204928773 U CN204928773 U CN 204928773U CN 201520363972 U CN201520363972 U CN 201520363972U CN 204928773 U CN204928773 U CN 204928773U
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Abstract
The utility model relates to an excitation system's voltage control moves looks pulse signal generating circuit, include: a sawtooth wave generator, its output sawtooth wave signal is synchronous by outside pulse signal, a schmidt trigger, its receipt comes from sawtooth wave generator's sawtooth wave signal to rectangular pulse signal after output moves mutually, a single steady - state triggers ware, its receipt comes from schmidt trigger move mutually after rectangular pulse signal to the positive square signal of the fixed width of output, with a multivibrator, its receipt comes from the positive square signal of the fixed width of single steady - state triggers ware to output is through the square wave that is interrupted of positive square signal modulation. The utility model is used for excitation system's voltage control moves the pulse signal that looks pulse signal generating circuit can send different phase places to each excitation rectification cabinet, the operation of flow equalizing.
Description
Technical field
The utility model relates to the voltage control phase-shift pulse signal generator for excitation system, in particular for the voltage control phase-shift pulse signal generator of excitation system rectifier cabinet equal current device.
Background technology
The excitation system of generator is equipped with multiple stage silicon controlled rectifier cabinet usually.Usually the inner three-phase rectifier be made up of six controllable silicons of every platform rectifier cabinet.Six pulses that exciter control system sends trigger controllable silicon by its conducting by particular order, thus three-phase alternating current are rectified into direct current and deliver to electric generator rotor coil and carry out excitation.Because the AC impedance of every platform rectifier cabinet is different with DC impedance, or due to the characterisitic parameter of thyristor different, therefore the direct current that exports of every platform rectifier cabinet may and unbalanced, be thisly unbalancedly unfavorable for the high silicon controlled useful life of exporting.In order to protect controllable silicon, the electric current adopting dynamic current equalization function that every platform rectifier cabinet is exported is needed to keep in balance.Phase place in view of trigger impulse can affect corresponding silicon controlled ON time, and then affect the size of the direct current that controllable silicon exports, therefore can by carrying out phase shift operation respectively, to change separately the size of each rectifier cabinet output current to the pulse of the controlled silicon conducting controlling each rectifier cabinet.But existing a lot of excitation system only uses unified trigger impulse sequence pair multiple stage rectifier cabinet to carry out unified operation, and the thyristor operating angle that can not change separately any rectifier cabinet is to carry out equal flow operation.In addition, the scheme of current change SCR trigger pulse phase place, its cost is higher, and many times people are in order to save cost, simply eliminate dynamic current equalization function, and change into and at the scene the static impedance of each ac cable is tested and adjust to carry out Current for paralleled to each rectifier cabinet.
Utility model content
The purpose of this utility model is to provide a kind of voltage control phase-shift pulse signal generating circuit for excitation system, and it is characterized in that, it can send the pulse signal of out of phase to each excitation rectifier cabinet, carry out equal flow operation.The voltage control phase-shift pulse signal generating circuit that the utility model is used for excitation system comprises: a saw-toothed wave generator, and its output sawtooth signal is also synchronous by the pulse signal of outside; A Schmidt trigger, it receives from the sawtooth signal of described saw-toothed wave generator and outside phase shift controlling voltage, and exports the rectangular pulse signal after phase shift; A monostable flipflop, it receives from the rectangular pulse signal after the phase shift of described Schmidt trigger, and exports the positive square-wave signal of fixed width; With a multivibrator, it receives the positive square-wave signal from the fixed width of described monostable flipflop, and exports the square wave through the interruption of positive square wave signal madulation.The composition of above-mentioned voltage control phase-shift pulse signal generating circuit is simple, low cost, reliability are high, wherein have employed outside pulse signal carries out synchronously, the pulse institute making it both can have been produced by existing excitation system is synchronous, there is again the characteristic of simple circuit, thus reduce the improvement cost of existing system.On the other hand, by the trigger adopting external voltage to control, be convenient to be compatible with various automatic control system, there is better controllability.
According to an aspect of the present utility model, described saw-toothed wave generator comprises a first timer chip, described Schmidt trigger comprises a second timer chip, described monostable trigger comprises the 3rd timer chip, and described multivibrator comprises the 4th timer chip.
According to another aspect of the present utility model, described first timer chip, described second timer chip, described 3rd timer chip and described 4th timer chip are same timer integrated circuit chip.Identical timer integrated circuit chip is adopted to make the setting of system simpler.
According to one side more of the present utility model, the voltage control phase-shift pulse signal generating circuit for excitation system also comprises the constant-current source circuit that comprises integrated regulator chip.Because sawtooth waveform is only subject to the impact of constant-current source electric current and corresponding charging capacitor capacity, thus can produces the sawtooth waveforms of good linear, make external voltage can accurately control phase shift angle linearly.
According to another aspect of the present utility model, the 6th pin of described first timer chip and the 7th pins in parallel, and connect the cold junction of second resistance and the hot junction of first electric capacity, and export sawtooth signal.5th pin of described first timer chip is by second capacity earth, and the second pin of described first timer chip connects outside synchronization pulse.Second pin of described second timer chip and the 6th pins in parallel, and the 6th pin connecting described first timer chip, to receive the sawtooth signal from described saw-toothed wave generator.5th pin of described second timer chip connects outside phase shift controlling voltage, and the rectangular pulse signal after the 3rd pin output phase shift of described second timer chip.6th pin of described 3rd timer chip and the 7th pins in parallel, and connect the cold junction of the 3rd resistance and the hot junction of the 3rd electric capacity, 5th pin of described 3rd timer chip is by the 4th capacity earth, second pin of described 3rd timer chip receives the rectangular pulse signal from described second timer chip, and the 3rd pin of described second timer chip exports the positive square-wave signal of a fixed width.4th pin of described 4th timer chip connects the 3rd pin of described 3rd timer chip, to receive positive square-wave signal.7th pin of described 4th timer chip connects the 4th resistance and the cold junction of the 5th resistance and the anode of first diode, second pin of described 4th timer chip and the 6th pins in parallel, and the anode of second diode is connected together with the negative electrode of described first diode, and by the 5th capacity earth, the negative electrode of described second diode connects the hot junction of described 5th resistance, and the 5th pin of described 4th timer chip is by the 6th capacity earth.3rd pin of described 4th timer chip exports the 1Khz square wave through the interruption of positive square wave signal madulation.Described first timer chip, described second timer chip are directly connected DC power supply anode with the first pin of described 3rd timer chip with the 4th pin, and the first pin of described 4th timer chip directly connects DC power supply anode.The direct ground connection of 8th pin of described first timer chip, described second timer chip, described 3rd timer chip and described 4th timer chip.The hot junction of described 3rd resistance connects DC power supply anode, and the negativing ending grounding of described 3rd electric capacity.Adopt 1Khz intermittent pulse square wave as trigger impulse, be conducive to the reliable triggering of high-power silicon controlled rectifier, and extend silicon controlled useful life.In addition, the trigger adopting external voltage to control, is also convenient to be compatible with various automatic control system, has higher controllability.
According to another aspect of the present utility model, the output end of pressure-stabilizing of described integrated regulator chip connects the hot junction of first resistance, the hot junction of described second resistance connects the Voltage Cortrol end of described integrated regulator chip and the cold junction of described first resistance, the voltage input end of described integrated regulator chip connects DC power supply anode, DC power supply anode be connected in series the 7th electric capacity between ground.
According to another aspect of the present utility model, described first timer chip, described second timer chip, described 3rd timer chip and described 4th timer chip are 555 type timer integrated circuit chips, and described integrated regulator chip is LM317 type integrated regulator chip.
Hereafter by clearly understandable mode, accompanying drawings preferred embodiment, right above-mentioned characteristic, technical characteristic, advantage and implementation thereof are further described.
Accompanying drawing explanation
The following drawings only schematically illustrates the utility model and explains, does not limit scope of the present utility model.
Fig. 1 is the schematic diagram of the utility model for the voltage control phase-shift pulse signal generating circuit of excitation system;
Fig. 2 is circuit of the present utility model each node signal waveform schematic diagram in Fig. 1.
Symbol description:
Embodiment
In order to the technical characteristic to utility model, object and effect have understanding clearly, now contrast accompanying drawing and embodiment of the present utility model is described, label identical in the various figures represents the identical or structural similarity of structure but the identical parts of function.
In this article, " schematically " expression " serves as example, example or explanation ", not should by being described to any diagram of " schematically " in this article, execution mode is interpreted as a kind of preferred or have more the technical scheme of advantage.
For making simplified form, only schematically show the part relevant to the utility model in each figure, they do not represent its practical structures as product.In addition, being convenient to for making simplified form understand, there are the parts of same structure or function in some figure, only schematically depict one of them, or only having marked one of them.
In this article, " one " not only represents " only this ", also can represent the situation of " more than one ".In this article, " on ", D score, "front", "rear", "left", "right" etc. only for representing the position relationship between relevant portion, and their absolute position non-limiting.
In this article, " first ", " second " etc. only for differentiation each other, but not represent they significance level and order etc.
Fig. 1 is the schematic diagram of the utility model for the voltage control phase-shift pulse signal generating circuit of excitation system, and wherein all components and parts can be welded in a printed circuit board.This voltage control phase-shift pulse signal generating circuit for excitation system comprises: a saw-toothed wave generator ST, and its output sawtooth signal Vw is also synchronous by the pulse signal Vs of outside; A Schmidt trigger VC, it receives from the sawtooth signal Vw of saw-toothed wave generator ST and outside phase shift controlling voltage Vc, and exports the rectangular pulse signal Vp after phase shift; A monostable flipflop MS, it receives from the rectangular pulse signal Vp after the phase shift of Schmidt trigger VC, and exports the positive square-wave signal Vt of fixed width; With a multivibrator MV, it receives the positive square-wave signal Vt from the fixed width of monostable flipflop MS, and exports the 1Khz square wave of the interruption of modulating through positive square-wave signal Vt.Wherein, saw-toothed wave generator is linear, and the synchronization pulse of outside can be simple pulse, also can be the strong trigger impulse of tiny pulse train composition.The width of positive square-wave signal is decided by timing capacitor and timing resistor.
Saw-toothed wave generator ST comprises a first timer chip U1 and peripheral circuit thereof, and can be synchronous by external pulse.Schmidt trigger VC comprises a second timer chip U2 and peripheral circuit thereof, to pass through voltage control lag time.Monostable flipflop MS comprises one the 3rd timer chip U3 and peripheral circuit thereof.Multivibrator MV comprises one the 4th timer chip U4 and peripheral circuit thereof, and the duty ratio that wherein the 4th timer chip U4 and peripheral circuit formation thereof are modulated by positive square-wave signal Vt is 50%, frequency is the square-wave oscillator of 1Khz.According to a kind of execution mode of the present utility model, first timer chip U1, second timer chip U2, the 3rd timer chip U3 and the 4th timer chip U4 are same timer integrated circuit chip, such as 555 timer integrated circuit chips.The voltage control phase-shift pulse signal generating circuit that saw-toothed wave generator, Schmidt trigger, monostable flipflop, multivibrator connect to form successively has simply, the feature of low cost, high reliability.Adopt 1Khz intermittent pulse square wave as trigger impulse, be conducive to the reliable triggering of high-power silicon controlled rectifier, and extend silicon controlled useful life.In addition, the trigger adopting external voltage to control, is also convenient to be compatible with various automatic control system, has higher controllability.
As shown in Figure 1, the 6th pin 6 of first timer chip U1 and the parallel connection of the 7th pin 7, and connect the cold junction of a second resistance R2 and the hot junction of a first electric capacity C1, and export sawtooth signal Vw.5th pin 5 of first timer chip U1 is by a second electric capacity C2 ground connection, and second pin 2 of first timer chip U1 connects outside synchronization pulse Vs, and the 3rd pin 3 floating of first timer chip U1.
As shown in Figure 2, when first trailing edge of synchronization pulse Vs arrived in the t1 moment, the voltage of second pin 2 of first timer chip U1 reduces to 0V, thus the rest-set flip-flop of first timer chip U1 inside is overturn, and then trigger the discharge transistor collector electrode of first timer chip U1 inside and ground conducting.Now, the voltage instantaneous of the 7th pin 7 of the first timer chip U1 be connected with this transistor collector is reduced to 0V, the first electric capacity C1 by the 7th pin 7 to power supply release store electric charge.Reduce to 0 with the voltage of the 6th pin 6 of the 7th pin 7 short circuit of first timer chip U1 simultaneously, the rest-set flip-flop of first timer chip U1 inside is caused again to overturn, thus ended by the discharge transistor of first timer chip U1 inside, and then the first electric capacity C1 is charged again.When the voltage in the hot junction of the first electric capacity C1 rises to 2/3 of DC power supply anode VCC voltage again time, the rest-set flip-flop upset again of first timer chip U1 inside, the first electric capacity C1 sparks because of the discharge transistor conducting of first timer chip U1 inside again.As can be seen from said process, after the trailing edge of the synchronization pulse Vs of outside is come, due to the first electric capacity C1 linear-charging and spark, the hot junction of the first electric capacity C1 be also simultaneously first timer chip U1 the 6th pin 6 on create linear saw-tooth wave signal Vw, and sawtooth signal Vw is the sawtooth waveforms synchronous with the pulse voltage trailing edge of synchronization pulse Vs.Be not but that the 6th pin 6 that all pulse voltage trailing edges of synchronization pulse Vs can trigger first timer chip U1 produces sawtooth waveforms.According to the definition of inner two each input terminal voltage set points of voltage comparator of concrete timer integrated circuit chip (being such as 555 timer integrated circuit chips), only when the 6th pin 6 i.e. voltage in the hot junction of the first electric capacity C1 of first timer chip U1 does not rise to 2/3 of DC power supply anode VCC voltage, in the namely sawtooth signal voltage rise stage, first timer chip U1 just can not by repeated trigger.Therefore the width of sawtooth waveforms must be less than the cycle of outside synchronization pulse Vs.If comprise tiny pulse train (i.e. strong trigger impulse) in synchronization pulse, the width of sawtooth waveforms also must be greater than often organize tiny pulse train width could with the cycle synchronisation of synchronization pulse Vs.The time width ts computing formula of sawtooth waveforms is as follows: ts=(8/15) * C1*R1*VCC (ms).
Second pin 2 of second timer chip U2 and the parallel connection of the 6th pin 6, and connect the 6th pin 6 of first timer chip U1, to receive the sawtooth signal Vw from saw-toothed wave generator ST.7th pin 7 floating of second timer chip U2.5th pin 5 of second timer chip U2 connects outside phase shift controlling voltage Vc, and the 3rd pin 3 of second timer chip U2 exports the rectangular pulse signal Vp after phase shift.5th pin 5 of second timer chip U2 and the second pin 2, the 6th pin 6 form a voltage comparator at timer integrated circuit chip internal.When the sawtooth signal Vw that the 6th pin 6 of first timer chip U1 produces rises equal with the voltage of the phase shift controlling voltage Vc on the 5th pin 5 of second timer chip U2 by 0V gradually, the above-mentioned voltage comparator output state change of second timer chip U2 inside, thus cause the rest-set flip-flop of second timer chip U2 inside to overturn, thus the output of the 3rd pin 3 of second timer chip U2 is overturn by high level is 0V, and keeps 0V until sawtooth signal Vw is less than the voltage of phase shift controlling voltage Vc again.There is this visible, under sawtooth signal Vw and phase shift controlling voltage Vc acting in conjunction, 3rd pin 3 of second timer chip U2 creates the reverse impulse voltage Vp of a lock-out pulse time delay than synchronization pulse Vs, its delay time tp is directly proportional to phase shift controlling voltage Vc, and the phase shift angle of its correspondence is a=7.2*Vc*R1*C1 (degree).
6th pin 6 of the 3rd timer chip U3 and the parallel connection of the 7th pin, and connect the cold junction of a 3rd resistance R3 and the hot junction of a 3rd electric capacity C3.5th pin 5 of the 3rd timer chip U3 is by a 4th electric capacity C4 ground connection, second pin 2 of the 3rd timer chip U3 receives the rectangular pulse signal Vp from second timer chip U2, and the 3rd pin 3 of second timer chip U2 exports the positive square-wave signal Vt of a fixed width.
4th pin 4 of the 4th timer chip U4 connects the 3rd pin 3 of the 3rd timer chip U3, to receive positive square-wave signal Vt.7th pin 7 of the 4th timer chip U4 connects the cold junction of a 4th resistance R4 and a 5th resistance R5 and the anode of a first diode D1.Second pin 2 of the 4th timer chip U4 and the parallel connection of the 6th pin 6, and the anode of a second diode D2 is connected together with the negative electrode of the first diode D1, and by a 5th electric capacity C5 ground connection, the negative electrode of the second diode D2 connects the hot junction of the 5th resistance R5,5th pin 5 of the 4th timer chip U4 is by a 6th electric capacity C6 ground connection, and the 3rd pin 3 of the 4th timer chip U4 exports the 1Khz square wave of the interruption of modulating through positive square-wave signal Vt.
First timer chip U1, second timer chip U2 are directly connected DC power supply anode VCC with first pin 1 of the 3rd timer chip U3 with the 4th pin 4, and first pin 1 of the 4th timer chip U4 directly connects DC power supply anode VCC.The 8th pin 8 directly ground connection of first timer chip U1, second timer chip U2, the 3rd timer chip U3 and the 4th timer chip U4.The hot junction of the 3rd resistance R3 connects DC power supply anode VCC, and the negativing ending grounding of the 3rd electric capacity C3.
According to a kind of execution mode of the present utility model, the voltage control phase-shift pulse signal generating circuit for excitation system also comprises the constant-current source circuit CC that comprises integrated regulator chip U5.The output end of pressure-stabilizing Vout of integrated regulator chip U5 connects the hot junction of a first resistance R1, and the Voltage Cortrol end ADJ of the hot junction connection integrated regulator chip U5 of the second resistance R2 connects the cold junction of the first resistance R1.The voltage input end Vin of integrated regulator chip U5 connects DC power supply anode VCC, DC power supply anode VCC be connected in series a 7th electric capacity C7 between ground.Wherein, the constant current that the constant-current source circuit that the voltage rise slope in the charging interval of the first electric capacity C1 and the hot junction of the first electric capacity C1 is made up of integrated regulator chip U5 and the first resistance R1, the second resistance R2 exports determines, therefore the voltage in the hot junction of the first electric capacity C1 is linear rising.Sawtooth waveform is only subject to the constant-current source electric current of integrated regulator chip (being such as LM317 integrated regulator chip) and periphery resistance composition and the impact of corresponding charging capacitor capacity, therefore the sawtooth waveforms of good linear can be produced, thus make external voltage can accurately Linear Control phase shift angle.
Be to be understood that, although this specification describes according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for possible embodiments of the present utility model; they are also not used to limit protection range of the present utility model; allly do not depart from the utility model skill equivalent embodiments of doing of spirit or change; as the combination of feature, segmentation or repetition, all should be included within protection range of the present utility model.
Claims (7)
1., for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, comprising:
A saw-toothed wave generator (ST), its output sawtooth signal (Vw) is also synchronous by the pulse signal of outside (Vs);
A Schmidt trigger (VC), it receives from the sawtooth signal (Vw) of described saw-toothed wave generator (ST) and outside phase shift controlling voltage (Vc), and exports the rectangular pulse signal after phase shift (Vp);
A monostable flipflop (MS), it receives from the rectangular pulse signal (Vp) after the phase shift of described Schmidt trigger (VC), and exports the positive square-wave signal (Vt) of fixed width; With
A multivibrator (MV), it receives the positive square-wave signal (Vt) from the fixed width of described monostable flipflop (MS), and exports the square wave of the interruption of modulating through positive square-wave signal (Vt).
2. as claimed in claim 1 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, described saw-toothed wave generator (ST) comprises a first timer chip (U1), described Schmidt trigger (VC) comprises a second timer chip (U2), described monostable trigger (MS) comprises the 3rd timer chip (U3), and described multivibrator (MV) comprises the 4th timer chip (U4).
3. as claimed in claim 2 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, described first timer chip (U1), described second timer chip (U2), described 3rd timer chip (U3) and described 4th timer chip (U4) are same timer integrated circuit chip.
4., as claimed in claim 2 or claim 3 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, also comprise the constant-current source circuit (CC) that comprises integrated regulator chip (U5).
5. as claimed in claim 4 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, 6th pin (6) of described first timer chip (U1) and the parallel connection of the 7th pin (7), and connect the cold junction of second resistance (R2) and the hot junction of first electric capacity (C1), and export sawtooth signal (Vw), 5th pin (5) of described first timer chip (U1) is by the second electric capacity (C2) ground connection, and second pin (2) of described first timer chip (U1) connects outside synchronization pulse (Vs),
Second pin (2) of described second timer chip (U2) and the parallel connection of the 6th pin (6), and connect the 6th pin (6) of described first timer chip (U1), to receive the sawtooth signal (Vw) from described saw-toothed wave generator (ST), 5th pin (5) of described second timer chip (U2) connects outside phase shift controlling voltage (Vc), and the rectangular pulse signal (Vp) after the 3rd pin (3) output phase shift of described second timer chip (U2);
6th pin (6) of described 3rd timer chip (U3) and the parallel connection of the 7th pin (7), and connect the cold junction of the 3rd resistance (R3) and the hot junction of the 3rd electric capacity (C3), 5th pin (5) of described 3rd timer chip (U3) is by the 4th electric capacity (C4) ground connection, second pin (2) of described 3rd timer chip (U3) receives the rectangular pulse signal (Vp) from described second timer chip (U2), 3rd pin (3) of described second timer chip (U2) exports the positive square-wave signal (Vt) of a fixed width,
4th pin (4) of described 4th timer chip (U4) connects the 3rd pin (3) of described 3rd timer chip (U3), to receive positive square-wave signal (Vt), 7th pin (7) of described 4th timer chip (U4) connects the 4th resistance (R4) and the cold junction of the 5th resistance (R5) and the anode of first diode (D1), second pin (2) of described 4th timer chip (U4) and the parallel connection of the 6th pin (6), and the anode of second diode (D2) is connected together with the negative electrode of described first diode (D1), and by the 5th electric capacity (C5) ground connection, the negative electrode of described second diode (D2) connects the hot junction of described 5th resistance (R5), 5th pin (5) of described 4th timer chip (U4) is by the 6th electric capacity (C6) ground connection, 3rd pin (3) of described 4th timer chip (U4) exports the 1Khz square wave of the interruption of modulating through positive square-wave signal (Vt),
Described first timer chip (U1), described second timer chip (U2) are directly connected DC power supply anode (VCC) with first pin (1) of described 3rd timer chip (U3) with the 4th pin (4), and first pin (1) of described 4th timer chip (U4) directly connects DC power supply anode (VCC);
8th pin (8) the directly ground connection of described first timer chip (U1), described second timer chip (U2), described 3rd timer chip (U3) and described 4th timer chip (U4);
The hot junction of described 3rd resistance (R3) connects DC power supply anode (VCC), and the negativing ending grounding of described 3rd electric capacity (C3).
6. as claimed in claim 5 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, the output end of pressure-stabilizing (Vout) of described integrated regulator chip (U5) connects the hot junction of first resistance (R1), the hot junction of described second resistance (R2) connects the Voltage Cortrol end (ADJ) of described integrated regulator chip (U5) and the cold junction of described first resistance (R1), the voltage input end (Vin) of described integrated regulator chip (U5) connects DC power supply anode (VCC), DC power supply anode (VCC) be connected in series the 7th electric capacity (C7) between ground.
7. as claimed in claim 6 for the voltage control phase-shift pulse signal generating circuit of excitation system, it is characterized in that, described first timer chip (U1), described second timer chip (U2), described 3rd timer chip (U3) and described 4th timer chip (U4) are 555 type timer integrated circuit chips, and described integrated regulator chip (U5) is LM317 type integrated regulator chip.
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| CN201520363972.7U CN204928773U (en) | 2015-05-29 | 2015-05-29 | A voltage control moves looks pulse generator for excitation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849915A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of programmable clock phase-shift circuit |
| CN111033995A (en) * | 2018-02-08 | 2020-04-17 | 富士电机株式会社 | Burst pulse control device and burst pulse control method for resonant converter |
| CN113688521A (en) * | 2021-08-25 | 2021-11-23 | 中国核动力研究设计院 | Design method and system for test allowable function of high-reliability reactor protection system |
-
2015
- 2015-05-29 CN CN201520363972.7U patent/CN204928773U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849915A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of programmable clock phase-shift circuit |
| CN106849915B (en) * | 2016-12-29 | 2020-03-27 | 北京时代民芯科技有限公司 | Programmable clock phase shift circuit |
| CN111033995A (en) * | 2018-02-08 | 2020-04-17 | 富士电机株式会社 | Burst pulse control device and burst pulse control method for resonant converter |
| CN111033995B (en) * | 2018-02-08 | 2023-04-04 | 富士电机株式会社 | Burst pulse control device and burst pulse control method for resonant converter |
| CN113688521A (en) * | 2021-08-25 | 2021-11-23 | 中国核动力研究设计院 | Design method and system for test allowable function of high-reliability reactor protection system |
| CN113688521B (en) * | 2021-08-25 | 2023-06-20 | 中国核动力研究设计院 | High-reliability reactor protection system test permission function design method and system |
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Address after: No. A1051-1, Nanjing High tech Industrial Development Zone, Nanjing, Jiangsu Province, 211100 Patentee after: Siemens Energy Automation (Nanjing) Co.,Ltd. Address before: No. A1051-1, Nanjing High tech Industrial Development Zone, Nanjing, Jiangsu Province, 211100 Patentee before: SIEMENS POWER PLANT AUTOMATION Ltd. |
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