CN208986627U - A kind of novel energy-storing circuit - Google Patents

Abstract

The utility model relates to a kind of novel energy-storing circuits, are controlled by SCM system management, including two metal-oxide-semiconductor switches and its PWM drive circuit, storage capacitor, power inductance, diode, storage capacitor voltage sampling circuit.Storage capacitor tank voltage is monitored by storage capacitor voltage sampling circuit, by storage capacitor tank voltage setting value and measured value relatively after, SCM system individually exports PWM1 signal and controls a metal-oxide-semiconductor switch, power supply forms charge circuit by metal-oxide-semiconductor switch, power inductance, freewheeling diode, storage capacitor, charges to storage capacitor reduction of blood pressure in high-speed；It exports synchronous PWM1, PWM2 signal and controls two metal-oxide-semiconductor switches, first make power inductance energy storage, then discharge power inductance energy storage, energy storage release charging current superposition power source charges electric current can charge to storage capacitor rapid pressure.Storage capacitor voltage stabilization can be kept in setting value, be adapted to power supply and the power-supply fluctuation of wide scope.

Description

A kind of novel energy-storing circuit

Technical field

The utility model relates to a kind of accumulators, are suitable for permanent magnetic vacuum breaker.

Background technique

Magneto mesohigh breaker, the contactor occurred in recent years is needed using storage capacitor energy storage, for driving forever The magnet exciting coil of magnetic switch realizes switch motion.Resistance current limliting decompression mode is currently generallyd use to charge to storage capacitor, Volume is larger, and charging is slow, and low efficiency, capacitor charging voltage is non-adjustable, and storage capacitor storage is forced down in power source supplying voltage, when When larger fluctuation occurs in power supply, storage capacitor tank voltage also will appear fluctuation, and when supply voltage is lower than rated value 85%, Lower tank voltage influences the normal operating of breaker, contactor, causes its poor for applicability.

Summary of the invention

The purpose of this utility model is to solve the problems, such as current permanent-magnetic switching, charge power supply by pulse switch, Power inductance and corresponding freewheeling diode may be implemented the fast-pulse charging to storage capacitor, drop compared to resistance current limliting Pressure mode charges, efficiency with higher.By SCM system management, the voltage of storage capacitor is monitored, with storage capacitor energy storage Voltage setting value compares, and adjusts PWM1 output pulse signal, control metal-oxide-semiconductor switch, charge power supply is by metal-oxide-semiconductor switch output arteries and veins Charging current is rushed, is charged to storage capacitor, can be set below charge power supply voltage and keep stable storage capacitor energy storage Voltage, i.e. decompression charging；PWM1, PWM2 pulse signal of SCM system synchronism output different in width control two connections and fill The metal-oxide-semiconductor of power supply switchs, and centre concatenation power inductance, when two metal-oxide-semiconductor switches simultaneously turn on, charge power supply electric current passes through two A metal-oxide-semiconductor and power inductance make power inductance energy storage, metal-oxide-semiconductor switch conduction, connection charging electricity when connection charge power supply anode When the metal-oxide-semiconductor of source ground wire switchs cut-off, source current is superimposed power by metal-oxide-semiconductor, power inductance and corresponding freewheeling diode Inductive energy storage discharge current, output are higher than the charging current of charge power supply voltage, can be higher than charge power supply voltage in this way and set Storage capacitor tank voltage keeps storage capacitor tank voltage stable and is maintained at the voltage value of charge power supply voltage or more, that is, rises Pressure charging.The utility model can arbitrarily set the tank voltage of storage capacitor below twice of charge power supply voltage, and keep Tank voltage is stablized.Influence of the charge power supply voltage fluctuation to storage capacitor energy storage can be overcome in this way, and charging rate is fast, imitate Rate is high.Different storage capacitor tank voltage setting values is adjusted, different magnet exciting coil drivings can be applicable in and required.It uses simultaneously The elements such as pulse transformer, optocoupler are isolated by low voltage power supply operating circuit and high-voltage power supply operating circuit, are conducive to Reduce interfering with each other between circuit.

The technical solution that the utility model is taken are as follows:

A kind of novel energy-storing circuit includes SCM system 1, push-pull driver circuit 2, pulse transformer T1, output amplification electricity Road 3, sampling amplification circuit 4, storage capacitor 5, metal-oxide-semiconductor switch Q1Q2, power inductance L1, optocoupler O1O2, diode D1D2D3, electricity Hinder R1~R6 and capacitor C1；Wherein SCM system 1 exports PWM1 signal and connects push-pull driver circuit 2, and push-pull driver circuit 2 is defeated It is sequentially connected in series the primary coil of capacitor C1 and pulse transformer T1 out, reconnects 12V power supply, pulse transformer T1 secondary coil is defeated One end out after dividing by resistance R1R2, connects the pole G of metal-oxide-semiconductor Q1, the cathode of diode D1, the pole the D connection of metal-oxide-semiconductor Q1 DC250V power supply, the pole S connect the other end, the anode of diode D1, the cathode of D2 and the power of pulse transformer T1 secondary coil Inductance L1；SCM system 1 exports PWM2 signal and drives optocoupler O1 by resistance R3, and 12V power supply passes through optocoupler O1 switch output The pole G of metal-oxide-semiconductor Q2 is connected after resistance R4 current limliting；DC250V power supply passes through the pole D, S of metal-oxide-semiconductor Q1, is sequentially connected in series power inductance Ground wire is connected after L1, diode D3 and storage capacitor 5, the pole D of metal-oxide-semiconductor Q2 connects the anode of power inductance L1, diode D3, S Pole connects ground wire, and diode D2 is reversely connected in parallel with power inductance L1, diode D3,5 three's series circuit of storage capacitor；Storage 5 anode of energy capacitor connects sampling amplification circuit 4 after resistance R5R6 partial pressure, and sampling amplification circuit 4 connects the input of optocoupler O2 The output of end and feedback output end, optocoupler O2 connects SCM system 1 through output amplifier 3.

SCM system 1, which exports PWM1 signal, to be passed through by push-pull driver circuit 2, pulse transformer T1 and resistance R1R2, two The driving circuit control metal-oxide-semiconductor Q1 switch of pole pipe D1 composition；Holding PWM2 signal is low level, when PWM1 signal high level, MOS Pipe Q1 conducting, DC250V power supply charges by metal-oxide-semiconductor Q1, power inductance L1, diode D3 to storage capacitor 5, and keeps power electric Feel L1 energy storage；After PWM1 signal is converted into low level by high level, two poles are passed through in the energy storage of metal-oxide-semiconductor Q1 cut-off, power inductance L1 Pipe D2D3 charges to 5 afterflow of storage capacitor, and 5 charging voltage of storage capacitor is not higher than 250V.

1 synchronism output PWM1, PWM2 pulse control signal of SCM system, and PWM2 pulsewidth is less than PWM1 pulsewidth, PWM1 Signal is by push-pull driver circuit 2, pulse transformer T1 and resistance R1R2, diode D1 control metal-oxide-semiconductor Q1 switch；PWM2 signal By optocoupler O1, resistance R3R4 control metal-oxide-semiconductor Q2 switch；When PWM1, PWM2 signal are high level simultaneously, metal-oxide-semiconductor Q1, Q2 are simultaneously Conducting, DC250V source current store up power inductance L1 by metal-oxide-semiconductor Q1, power inductance L1 and metal-oxide-semiconductor Q2 to ground conductive Energy；After PWM1 signal keeps high level, PWM2 signal to become low level from high level, metal-oxide-semiconductor Q1 conducting, Q2 cut-off, DC250V Source current charges by metal-oxide-semiconductor Q1, power inductance L1, diode D3 to storage capacitor 5；Meanwhile power inductance L1 energy storage passes through Diode D2D3 release is crossed, afterflow charging current is generated；The superposition of Current Voltage can produce electric higher than the charging of 250V voltage Stream, makes 5 tank voltage of storage capacitor be greater than 250V, and maximum is no more than 500V.

Wherein pulse transformer T1 selects primary coil and the equal high frequency transformer of secondary winding turns；Optocoupler O2 is selected Linear optical coupling with feedback output makes the output signal and sampling amplification circuit 4 that connect the output amplifier 3 of optocoupler O2 Input signal is linear；Optocoupler O1 selects common disconnecting switch optocoupler；There is isolation to make by pulse transformer T1, optocoupler O1O2 With high voltage power supply circuit being isolated with low voltage power supply circuit, it is possible to reduce interfering with each other between circuit.

Pass through the energy storage being made of optocoupler O2 with the output amplifier 3, sampling amplification circuit 4, resistance R5R6 being connected The tank voltage of storage capacitor 5 can be monitored in real time in 5 tank voltage observation circuit of capacitor, SCM system 1；SCM system 1 By the tank voltage setting value and measured value of storage capacitor 5 relatively after, adjust PWM1, PWM2 output of pulse signal, control metal-oxide-semiconductor Q1Q2 switch, charges to storage capacitor 5, and 5 tank voltage of storage capacitor can charge to different setting values, and keep stable, Not more than 500V.

Detailed description of the invention

A kind of composition figure of novel energy-storing circuit of Fig. 1.

Specific embodiment

Comparative diagram 1, a kind of novel energy-storing circuit includes SCM system 1, push-pull driver circuit 2, pulse transformer T1, defeated Amplifying circuit 3, sampling amplification circuit 4, storage capacitor 5, metal-oxide-semiconductor switch Q1Q2, power inductance L1, optocoupler O1O2, diode out D1D2D3, resistance R1~R6 and capacitor C1；Wherein SCM system 1 exports PWM1 signal and connects push-pull driver circuit 2, recommends drive Dynamic circuit 2 exports the primary coil for being sequentially connected in series capacitor C1 and pulse transformer T1, reconnects 12V power supply, pulse transformer T1 One end of the output of secondary coil connects the pole G of metal-oxide-semiconductor Q1, the cathode of diode D1, metal-oxide-semiconductor after dividing by resistance R1R2 The pole D of Q1 connects DC250V power supply, and the pole S connects the other end of pulse transformer T1 secondary coil, the anode of diode D1, D2 Cathode and power inductance L1；SCM system 1 exports PWM2 signal and drives optocoupler O1 by resistance R3, and 12V power supply passes through optocoupler O1 switch output connects the pole G of metal-oxide-semiconductor Q2 after resistance R4 current limliting；DC250V power supply passes through the pole D, S of metal-oxide-semiconductor Q1, successively goes here and there Ground wire is connected after connecing power inductance L1, diode D3 and storage capacitor 5, the pole D of metal-oxide-semiconductor Q2 connects power inductance L1, diode The anode of D3, the pole S connect ground wire, diode D2 reversely with power inductance L1, diode D3,5 three's series circuit of storage capacitor It is connected in parallel；5 anode of storage capacitor connects sampling amplification circuit 4 after resistance R5R6 partial pressure, and sampling amplification circuit 4 connects light The output of the input terminal and feedback output end of coupling O2, optocoupler O2 connects SCM system 1 through output amplifier 3.

SCM system 1 exports PWM1 signal and passes through push-pull driver circuit 2, pulse transformer T1 and resistance R1R2, two poles The driving circuit control metal-oxide-semiconductor Q1 switch of pipe D1 composition；Holding PWM2 signal is low level, when PWM1 signal high level, metal-oxide-semiconductor Q1 conducting, DC250V power supply charges by metal-oxide-semiconductor Q1, power inductance L1, diode D3 to storage capacitor 5, and makes power inductance L1 energy storage；After PWM1 signal is converted into low level by high level, diode is passed through in the energy storage of metal-oxide-semiconductor Q1 cut-off, power inductance L1 D2D3 charges to 5 afterflow of storage capacitor, and 5 charging voltage of storage capacitor is not higher than 250V.

1 synchronism output PWM1, PWM2 pulse control signal of SCM system, and PWM2 pulsewidth is less than PWM1 pulsewidth, PWM1 Signal is by push-pull driver circuit 2, pulse transformer T1 and resistance R1R2, diode D1 control metal-oxide-semiconductor Q1 switch；PWM2 signal By optocoupler O1, resistance R3R4 control metal-oxide-semiconductor Q2 switch；When PWM1, PWM2 signal are high level simultaneously, metal-oxide-semiconductor Q1, Q2 are simultaneously Conducting, DC250V source current store up power inductance L1 by metal-oxide-semiconductor Q1, power inductance L1 and metal-oxide-semiconductor Q2 to ground conductive Energy；After PWM1 signal keeps high level, PWM2 signal to become low level from high level, metal-oxide-semiconductor Q1 conducting, Q2 cut-off, DC250V Source current charges by metal-oxide-semiconductor Q1, power inductance L1, diode D3 to storage capacitor 5；Meanwhile power inductance L1 energy storage passes through Diode D2D3 release is crossed, afterflow charging current is generated；The superposition of two Current Voltages can produce filling higher than 250V voltage Electric current, makes 5 tank voltage of storage capacitor be greater than 250V, and maximum is no more than 500V.

Wherein pulse transformer T1 selects primary coil and the equal high frequency transformer of secondary winding turns；Optocoupler O1 is selected Common disconnecting switch optocoupler；Optocoupler O2 selects the linear optical coupling with feedback output, makes the output amplifier 3 for connecting optocoupler O2 Output signal and sampling amplification circuit 4 input signal it is linear；There is isolation to make by pulse transformer T1, optocoupler O1O2 With high voltage power supply circuit being isolated with low voltage power supply circuit, it is possible to reduce interfering with each other between circuit.

SCM system 1 can set different 5 tank voltages of storage capacitor；By by optocoupler O2 and the output that is connected The tank voltage observation circuit that amplifying circuit 3, sampling amplification circuit 4, resistance R5R6 are formed, the storage of 1 real-time monitoring of SCM system The tank voltage of energy capacitor 5；SCM system 1 by the tank voltage setting value and measured value of storage capacitor 5 relatively after, adjust PWM1, PWM2 output of pulse signal, control metal-oxide-semiconductor Q1Q2 switch, charge to storage capacitor 5,5 tank voltage of storage capacitor can be with Different tank voltage setting values is charged to, and keeps stable, not more than 500V.

The course of work of SCM system 1 is as follows:

1, after SCM system 1 starts, by its operation interface, storage capacitor tank voltage setting value, work electricity are inputted Source voltage value, the operating parameters such as PWM1, PWM2 pulse signal pulsewidth, duty ratio when inputting without parameter, enable default operation ginseng Number, wherein tank voltage setting value cannot be greater than twice of working power voltage value.

2, the tank voltage value of the constantly monitoring storage capacitor 5 of SCM system 1, measured value and setting value are compared； When the measured value of tank voltage is lower than setting value, in the case that tank voltage setting value is lower than working power voltage value, single-chip microcontroller System 1 does not export PWM2 high level signal, keeps low level, only exports PWM1 pulse signal, controls metal-oxide-semiconductor switch Q1, make DC250V power supply carries out pulse charge to storage capacitor 5 by metal-oxide-semiconductor switch Q1, power inductance L1 and diode D2D3；Work as storage The measured value of energy voltage is lower than setting value, in the case that tank voltage setting value is higher than working power voltage value, SCM system 1 Synchronism output PWM1, PWM2 pulse high level signal, controls metal-oxide-semiconductor switch Q1, Q2 respectively, and the high pulse width of PWM2 is less than The high pulse width of PWM1；When PWM1, PWM2 signal are simultaneously high level, metal-oxide-semiconductor Q1Q2 is simultaneously turned on, DC250V power supply electricity Stream makes power inductance L1 energy storage by metal-oxide-semiconductor Q1Q2；PWM1 keeps high level, after PWM2 becomes low level from high level, DC250V power supply is switched by metal-oxide-semiconductor, is superimposed power inductance L1 energy storage release current, generates the pulse charge electricity higher than DC250V Stream is charged by diode D2D3 to storage capacitor 5.When tank voltage measured value is close to setting value, SCM system 1 is adjusted The high level width and duty ratio of PWM1, PWM2 output of pulse signal adjust charge capacity, keep 5 tank voltage of storage capacitor steady Surely it is increased to setting value.

A kind of accumulator be mainly characterized by comprising: to be controlled by synchronous PWM1, PWM2 signal two connection charge power supplies, The metal-oxide-semiconductor switch of centre concatenation power inductance, adds freewheeling diode and rectifier diode, can produce higher than charge power supply electricity The tank voltage of the pulse charging current of pressure, storage capacitor is adjustable under twice of charge power supply voltage；Using high-frequency impulse transformation Low voltage power supply circuit and high voltage power supply circuit are isolated for device and optocoupler, improve system stability.Without creating, pass through The analogous circuit for changing associated circuit components and being formed, should belong to scope of protection of the utility model.

Claims (4)

1. a kind of novel energy-storing circuit, including storage capacitor (5), diode D1~D3, resistance R1~R6 and capacitor C1, feature It is to further include SCM system (1), push-pull driver circuit (2), pulse transformer T1, output amplifier (3), sampling amplification Circuit (4), metal-oxide-semiconductor switch Q1, Q2, power inductance L1, optocoupler O1, O2；Wherein SCM system (1) output PWM1 signal connection Push-pull driver circuit (2), push-pull driver circuit (2) export the primary coil for being sequentially connected in series capacitor C1 and pulse transformer T1, then 12V power supply is connected, one end of pulse transformer T1 secondary coil output after dividing by resistance R1, R2, connects the G of metal-oxide-semiconductor Q1 Pole, diode D1 cathode, the pole D of metal-oxide-semiconductor Q1 connects DC250V power supply, and the pole S connects the another of pulse transformer T1 secondary coil One end, the anode of diode D1, the cathode of D2 and power inductance L1；SCM system (1) exports PWM2 signal and passes through resistance R3 Optocoupler O1 is driven, 12V power supply connects the pole G of metal-oxide-semiconductor Q2 by optocoupler O1 switch output after resistance R4 current limliting；DC250V power supply By the pole D, S of metal-oxide-semiconductor Q1, it is sequentially connected in series power inductance L1, diode D3 and storage capacitor (5) connects ground wire, metal-oxide-semiconductor Q2 afterwards The pole D connection power inductance L1, diode D3 anode, the pole S connect ground wire, diode D2 reversely with power inductance L1, two poles Pipe D3, storage capacitor (5) three's series circuit are connected in parallel；Storage capacitor (5) anode is connected after resistance R5, R6 partial pressure and is taken Sample amplifying circuit (4), sampling amplification circuit (4) connect the input terminal and feedback output end of optocoupler O2, and the output of optocoupler O2 is through defeated Amplifying circuit (3) connection SCM system (1) out.

2. a kind of novel energy-storing circuit according to claim 1, it is characterised in that pulse transformer T1 select primary coil and The equal high frequency transformer of secondary winding turns has signal isolation effect, by high voltage power supply circuit and low voltage power supply electricity Road isolation.

3. a kind of novel energy-storing circuit according to claim 1, it is characterised in that optocoupler O2 selects the line with feedback output Property optocoupler, make connect optocoupler O2 output amplifier (3) output signal and sampling amplification circuit (4) input signal at line Sexual intercourse；Optocoupler O1 selects common disconnecting switch optocoupler；Optocoupler O1, O2 have buffer action, by high voltage power supply circuit with it is low Voltage supply circuit isolation.

4. a kind of novel energy-storing circuit according to claim 1, it is characterised in that by by optocoupler O2 and the output that is connected Storage capacitor (5) tank voltage observation circuit that amplifying circuit (3), sampling amplification circuit (4), resistance R5, R6 are formed, single-chip microcontroller The tank voltage of storage capacitor (5) can be monitored in real time in system (1).