WO2020052297A1 - Circuit de régulation de lumière et de régulation de vitesse - Google Patents

Circuit de régulation de lumière et de régulation de vitesse Download PDF

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Publication number
WO2020052297A1
WO2020052297A1 PCT/CN2019/090740 CN2019090740W WO2020052297A1 WO 2020052297 A1 WO2020052297 A1 WO 2020052297A1 CN 2019090740 W CN2019090740 W CN 2019090740W WO 2020052297 A1 WO2020052297 A1 WO 2020052297A1
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Prior art keywords
resistor
switch
diode
anode
capacitor
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PCT/CN2019/090740
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English (en)
Chinese (zh)
Inventor
张文龙
陈元木
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厦门天力源光电科技有限公司
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Publication of WO2020052297A1 publication Critical patent/WO2020052297A1/fr

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the invention relates to the technical field of dimming and speed regulation, in particular to a dimming and speed regulating circuit.
  • FIG. 1 The schematic diagram of the conventional thyristor dimming and speed governor circuit is shown in Figure 1.
  • the power supply passes KRP1, Lo, R3, and the adjustable resistor network R '(composed of RP1, R5, R6, RP2).
  • the trigger capacitor C2 When the voltage of the trigger capacitor C2 is higher than the breakdown voltage UBo of the trigger diode D3, the trigger diode D3 is turned on. After D3 is turned on, a certain current passes through the control electrode G of the triac TR1. To the first anode, because the on-state voltage of the trigger diode D3 decreases and is smaller than a certain value of the breakdown voltage, a voltage drop occurs in the trigger capacitor C2.
  • the energy originally stored in the trigger capacitor C2 passes through the trigger diode D3,
  • the control electrode of the triac TR1 and the first anode of the triac TR1 are discharged, resulting in a higher discharge current superimposed on the control electrode of the triac TR1 flowing through its first anode current.
  • TR1 provides the trigger current, and the triac TR1 is turned on.
  • the power is supplied to the load RL through the triac TR1, and the load RL works.
  • RP2 is fine-tuning Resistor
  • the working conditions of the triac must be met at the same time: 1
  • the current flowing through the thyristor control electrode must be greater than the thyristor trigger current IGT;
  • the current flowing through the thyristor anode must be greater than the thyristor Latching Current (Latching Current);
  • Capacitive or inductive load RL has the start-up (start-up) capacity and the minimum maintenance working capacity when it is turned on. It can also be understood as the startup current and the minimum maintenance working current. Generally, its startup current is greater than the minimum maintenance working current. .
  • the optical speed governor sets the resistance value of the adjustable resistor network R ′ through the following two methods.
  • One method is to satisfy 1 in the above (1), that is, the current flowing through the thyristor control electrode must be greater than the trigger current IGT of the thyristor, and at the same time, the thyristor triggers conduction by meeting the maintenance working conditions of the above (2).
  • the current that continuously flows through the thyristor anode must be greater than its sustaining current.
  • the disadvantage of this design is that the load will not work immediately after the dimmer switch KRP1 is closed. In the initial state, the RP1 adjustable resistor must be adjusted.
  • the other method is to directly meet 1 in (1) above, that is, the current flowing through the thyristor control electrode must be greater than the trigger current IGT of the thyristor, and at the same time, 2 flowing through the thyristor in (1)
  • the current of the anode must be greater than its holding current, and at the same time meet the start-up and startup current of the load, so that the circuit connected to the load keeps working and meets the power supply to the load.
  • the load is a lamp, it will achieve greater brightness as soon as it is turned on (than the lamp itself).
  • the minimum brightness that can be self-maintained is high); if the load is a fan, its speed will work at a high level when it is turned on. If a smaller light brightness is required or the speed of the fan is lower, the speed cannot be adjusted. There are inconveniences.
  • the present invention provides a dimming and speed-adjusting circuit.
  • the work of the lamp after the dimming switch is closed is at or close to the minimum brightness state that the lamp itself can maintain.
  • the fan is kept at the minimum maintaining current state after the governor switch is closed, so as to solve the problems of dead stroke (invalid stroke) and inconvenience in starting up (after the dimming switch and the speed switch are closed).
  • the technical solution adopted by the present invention to solve the above technical problems is to provide a dimming and speed regulating circuit, which includes a main trigger circuit connected in series between a live wire terminal and a neutral wire terminal; the main trigger circuit includes an adjustable resistor network; It also includes a compensation circuit in parallel with the adjustable resistance network.
  • the compensation circuit contains a switching actuator. The compensation circuit provides current compensation to the adjustable resistance network for a period of time after the power switch is closed to meet the load.
  • the switching actuator in the compensation circuit includes thyristor, MOS tube, IGBT and / or thyristor.
  • the switching actuator of the compensation circuit is a controlled mechanical timing switch, a controlled electronic timing switch, and / or a photocoupler switch.
  • the controlled mechanical timing switch includes a relay.
  • the controlled electronic timing switch includes a transistor, a MOS transistor, a thyristor, a thyristor, an IGBT, and / or a photocoupler switch.
  • the compensation circuit further includes a microcontroller; the microcontroller is configured to perform the controlled mechanical timing switch, the controlled electronic timing switch, and / or the photocoupler switch control.
  • the controlled mechanical timing switch and the controlled electronic timing switch use a gradual or steady state of the capacitor charging process to realize the timing, and a dedicated time base integrated circuit is used to implement the timing. And / or adopt the one-chip computer to realize the timing.
  • the dimming and speed regulating circuit further includes at least one triggering diode connected in series between the adjustable resistor network input terminal and a load.
  • the compensation circuit includes: a fourth diode, a fifth diode, a seventh resistor, an eighth resistor, a normally open relay, a sixth diode, a seventh diode, Rectifier bridge stack, ninth resistor, voltage stabilization module, fourth capacitor, tenth resistor, eleventh resistor, and second switch tube; the cathode of the fourth diode, the anode of the fifth diode, and the rectifier bridge An AC input terminal of the stack is respectively connected to the input terminal of the adjustable resistance network; the anode of the fourth diode, the seventh resistor, the first contact of the relay, and the cathode of the sixth diode are connected in series.
  • the anode of the fifth diode, the eighth resistor, the second contact of the relay, and the anode of the seventh diode are connected in series; the anode of the sixth diode and the seventh diode
  • the cathode is respectively connected to the output terminal of the adjustable resistance network; the other AC input terminal of the rectifier bridge stack is connected to the load; the DC output terminal of the rectifier bridge stack is connected to the stable via the ninth resistor.
  • the compensation circuit includes: a fourth diode, a fifth diode, a seventh resistor, an eighth resistor, a sixth diode, a seventh diode, a rectifier bridge stack, A third capacitor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a voltage regulator, a first switch, a second switch, and a third switch; the cathode of the fourth diode
  • the anode of the fifth diode and an AC input terminal of the rectifier bridge stack are respectively connected to the input terminal of the adjustable resistance network; the anode of the fourth diode, the third switch tube, the seventh resistor,
  • the cathode of the sixth diode is connected in series in sequence; the cathode of the fifth diode, the eighth resistor, the first switch tube, and the anode of the seventh diode are connected in series in sequence; the anode of the sixth diode The cathode
  • one end of the eleventh resistor is connected between the ninth resistor and the tenth resistor; the other of the eleventh resistor is One end is connected to one end of the third capacitor and the cathode of the Zener tube respectively; the anode of the Zener tube is connected to the control terminal of the second switch tube through the twelfth resistor; the third The other end of the capacitor is connected to the other DC output end of the rectifier bridge stack.
  • the compensation circuit includes: a seventh diode, an eighth diode, an eighth resistor, a ninth resistor, a tenth resistor, a twelfth resistor, a third capacitor, and a voltage regulator.
  • the compensation circuit includes a fifth diode, an eighth diode, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, and a voltage regulator.
  • Tube, third capacitor, first switch tube and second switch tube; the output terminal of the first switch tube, the output terminal of the second switch tube, and the third capacitor are respectively connected to the input terminal of the adjustable resistance network Phase connection; the input end of the first switch tube is connected to the cathode of the fifth diode via an eighth resistor; the anode of the fifth diode is connected to the output terminal of the adjustable resistance network; the first The input ends of the two switching tubes are connected to the cathode of the eighth diode through the tenth resistor and the ninth resistor; the anode of the eighth diode is connected to the load; the other end of the third capacitor is connected to Between the cathode of the voltage regulator tube and the eleventh resistor; the control terminal of the first switch tube is connected between the input terminal of the second switch tube and the tenth resistor; the control of the second switch tube The terminal is connected to the anode of the Zener tube via the twelfth resistor.
  • a dimming and speed regulating circuit of the present invention by adding a controlled mechanical timing switch or a controlled electronic timing switch to the control loop to provide a certain period of time after the power is turned on (after the power switch is closed).
  • the compensation current supplements the amount of current provided by the adjustable resistor network, thereby increasing the charging current of the trigger capacitor, and solving the problems of dead stroke (invalid stroke) at startup and the inconvenience of using the existing technology.
  • the switch including dimmer switch or speed switch, etc.
  • the work of the lamp is at or close to the minimum brightness state that the lamp itself can maintain, or the fan is at the minimum maintaining working current state;
  • a dimming and speed regulating circuit according to the present invention.
  • the controlled mechanical timing switch or controlled electronic timing switch in the control loop turns off the compensation current after a certain period of time after the power is turned on, and thereafter the maintenance current is controlled by a variable resistance network.
  • FIG. 1 is a conventional dimming and speed regulating circuit diagram
  • FIG. 2 is a dimming and speed-adjusting circuit diagram of a controlled mechanical timing switch of the present invention
  • FIG. 3 is a dimming and speed-adjusting circuit diagram of a controlled electronic timing switch of the present invention
  • FIG. 4 is a comparison between a voltage waveform diagram of the regulating circuit of the present invention and a voltage waveform diagram of the prior art
  • FIG. 5 is a circuit diagram of a dimming and speed regulating circuit according to the first embodiment of the present invention.
  • FIG. 6 is a circuit diagram of a dimming and speed regulating circuit according to a second embodiment of the present invention.
  • FIG. 7 is a circuit diagram of a dimming and speed regulating circuit according to a third embodiment of the present invention.
  • FIG. 8 is a circuit diagram of a dimming and speed regulating circuit according to the fourth embodiment of the present invention.
  • a dimming and speed regulating circuit of the present invention includes a main trigger circuit connected in series between a live wire terminal and a neutral line terminal; the main trigger circuit includes an adjustable resistor network; the dimming and speed regulating circuit further includes a circuit with the adjustable resistor A parallel compensation circuit that includes a switching actuator.
  • the compensation circuit provides current compensation to the adjustable resistor network for a period of time after the power switch is closed, so as to meet the load startup current of the load.
  • the switching actuators are continuously turned on during this period, so that the load brightness or load speed can be adjusted through the adjustable resistor network and the switching actuators in the compensation circuit; the power switch is connected to the live wire terminal; in the compensation circuit
  • the switching actuators include, but are not limited to, thyristors, MOS transistors, IGBTs or thyristors, and combinations of one or more of them; the loads include, but are not limited to, lamps or fans.
  • the power switch includes, but is not limited to, a dimming switch or a speed regulating switch; the switch execution element of the compensation circuit is one or a combination of a controlled mechanical timing switch and a controlled electronic timing switch;
  • the controlled mechanical timing switch includes a relay; the controlled electronic timing switch includes a transistor, a MOS tube, a thyristor, a thyristor, and / or a photocoupler switch.
  • the controlled mechanical timing switch, the controlled electronic timing switch or the photocoupler switch in the compensation circuit may be controlled by a general combination logic circuit, or may be controlled by a circuit including a microcontroller.
  • the main trigger circuit includes a third resistor R3, an adjustable resistor network, a third trigger diode D3, a triac TR1, and a second capacitor C2;
  • the power switch KRP1 passes through a band of iron
  • the inductor L0 of the core is connected to the third resistor R3;
  • the third resistor R3, the adjustable resistor network, the third trigger diode D3, the triac TR1, and the load RL are connected in series in sequence;
  • the load RL Connected to the neutral terminal N;
  • the output of the adjustable resistance network is connected to one end of the third trigger diode D3 and one end of the second capacitor C2; the other end of the second capacitor C2,
  • the first anode of the triac TR1 is connected to the load RL, respectively;
  • the other end of the third trigger diode D3 is connected to the control pole of the triac TR1;
  • the bidirectional thyristor The second anode of the silicon TR1 is connected to the switching power supply
  • the adjustable resistor network includes a rheostat RP1, a fifth resistor R5, a sixth resistor R6, and a trimmer resistor RP2; the sixth resistor R6 and the trimmer resistor RP2 are connected in series with the rheostat RP1, the fifth resistor R5 Connected in parallel; the varistor RP1 is connected to the power switch KRP1 and is controlled by the power switch KRP1. In the initial state, the resistance value of the varistor RP1 is the largest. By adjusting the power switch KRP1, the resistance of the varistor RP1 gradually decreases.
  • the dimming and speed regulating circuit further includes a first trigger diode D1 and a second trigger diode D2; the first trigger diode D1 and the second trigger diode D2 are connected in series between the adjustable resistor network input terminal and the load RL In order to provide a relatively constant and reliable working voltage for the control of the compensation circuit, thereby achieving more accurate control. It should be noted that, in specific implementation, there may be one, two or more trigger diodes connected in series between the adjustable resistor network input terminal and the load RL.
  • the adjustable resistance network A compensation circuit including a controlled mechanical timing switch or a controlled electronic timing switch is connected in parallel to achieve a certain period of time T (timed off time, T is a number of alternating cycles of the AC power supply) after the power is turned on.
  • the compensation current supplements the amount of current provided by the adjustable resistor network to increase the charging current of the second capacitor C2 (trigger capacitor), so that the second capacitor C2 is charged before t1 is turned on, because the third trigger diode D3 is turned on.
  • the energy originally stored in the second capacitor C2 passes through the third trigger diode D3 and the triac TR1 at the same time.
  • the control electrode and the first anode of the triac TR1 discharge, generating a higher discharge current superimposed on the control electrode of the triac TR1 flowing through its first anode current to form and control the bidirectional thyristor.
  • TR1 provides the trigger current, and the triac TR1 is turned on.
  • the energy provided by the conventional power supply is A.
  • the energy provided by the power supply during the T period of the present invention is increased to A + B; Provide and flow a larger holding current or start-up current that is greater than the triac TR1, so that the triac TR1 is continuously turned on during the T period, and after the T time is turned off, the compensation current enters In a stable state, the energy that triggers the control network is then supplied by the variable resistance network, and at the same time, it ensures that the current flowing from the triac TR1 to the load RL is greater than the thyristor's sustaining current or the minimum sustaining operating current of the load RL, so that the load RL enters the normal working state, and then adjusts the varistor RP1 to achieve the required brightness or speed according to the actual needs of the user.
  • Different load RL can be realized by trimming resistor RP2.
  • the compensation circuit of the present invention can effectively solve the problems of dead stroke (invalid stroke) and inconvenience during use.
  • the work of the load RL after the power switch KRP1 is closed is at or near the minimum self-sustainable working condition. , And then adjust the rheostat RP1 according to the actual needs of the user to achieve the required operating conditions.
  • Ui represents an AC power source
  • Uc2 represents a change in the charge capacity of the second capacitor C2
  • Igt represents a current provided by the triac TR1, including the current output by the adjustable resistor network and the current output by the compensation circuit
  • URL1 indicates the AC power passed on the load RL when the compensation circuit is not added
  • URL2 indicates the AC power passed on the load RL when the compensation is added.
  • the ABC circuit network in the dashed frame constitutes a compensation circuit composed of a relay and a corresponding controlled electronic timing-off switch to implement a compensation current, which specifically includes a fourth diode D4 and a fifth diode Diode D5, seventh resistor R7, eighth resistor R8, normally open relay, sixth diode D6, seventh diode D7, rectifier bridge stack BD1, ninth resistor R9, voltage regulator module IC1, fourth capacitor C4, the tenth resistor R10, the eleventh resistor R11, and the second switching transistor Q2; the cathode of the fourth diode D4, the anode of the fifth diode D5, and an AC input terminal of the rectifier bridge stack BD1 are respectively connected with The input ends of the adjustable resistance network are connected; the anode of the fourth diode D4, the seventh resistor R7, the first contact K1 of the relay, and the cathode of the sixth diode D6 are connected in series; The cathode of
  • the second switching transistor Q2 is an NPN transistor, and the control terminal of the second switching transistor Q2 corresponds to the base of the transistor; the input terminal of the second switching transistor Q2 corresponds to the collector of the transistor; The output of the second switching transistor Q2 corresponds to the emitter of the triode.
  • the power supply when the power supply is in the positive half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor C2 via the inductor coil L0, the third resistor R3, and the adjustable resistor network, and at the same time via the rectifier bridge stack BD1 and the ninth resistor R9
  • the voltage stabilization module IC1 provides working power for the two-contact normally open relay JD1.
  • the power source charges the fourth capacitor C4, and provides the bias voltage to the second switch Q2 via the eleventh resistor R11.
  • the second switch Q2 is turned on.
  • the relay JD1 works, the contacts K1 and K2 are closed, and the power supply passes the inductance coil LO, the third resistor R3, the fifth diode D5, the eighth resistor R8, the second contact K2, and the seventh diode D7 to the second capacitor. C2 charges.
  • the power supply When the power supply is in the negative half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor C2 via the inductor coil L0, the third resistor R3, and the adjustable resistor network, and at the same time via the rectifier bridge stack BD1, the ninth resistor R9, and the voltage regulator module IC1 Provide working power for the double-contact normally open relay JD1.
  • the power source charges the fourth capacitor C4, and provides the bias voltage to the second switching tube Q2 via the eleventh R11. Q2 is turned on, the relay works, and the contacts K1 and K2 are closed.
  • the power source charges the second capacitor C2 via the inductor L0, the third resistor R3, the fourth diode D4, the seventh resistor R7, the contact K1, and the sixth diode D6.
  • the charging of the fourth capacitor C4 ends, the second switch Q2 loses the bias current, the second switch Q2 is turned off, and the relay The JD1 coil is de-energized, the contacts K1 and K2 are disconnected, and the compensation current provided by the compensation circuit is suspended, so that the load RL enters the normal working state, and then the rheostat RP1 is adjusted to achieve the required working conditions according to the actual needs of the user. This is achieved by adjusting the trimmer resistor RP2.
  • the ABC circuit network in the dashed frame constitutes a compensation circuit for controlling the electronic timing switch to realize the compensation current, which specifically includes a fourth diode D4, a fifth diode D5, a first diode Seven resistors R7, eighth resistors R8, sixth diode D6, seventh diode D7, rectifier bridge stack BD1, third capacitor C3, ninth resistor R9, tenth resistor R10, eleventh resistor R11, first Twelve resistor R12, voltage regulator ZD1, first switch Q1, second switch Q2, and third switch Q3; the cathode of the fourth diode D4, the anode of the fifth diode D5, and a rectifier bridge An AC input terminal of the stack BD1 is respectively connected to the input terminal of the adjustable resistance network; the anode of the fourth diode D4, the third switch Q3, the seventh resistor R7, and the sixth diode D6 The cathodes are connected in series; the cathode of the fifth diode D4, a fifth diode D5,
  • the first switch Q1, the second switch Q2, and the third switch Q3 are all NPN transistors, and the control end of each switch corresponds to the base of the transistor; the input end of each switch corresponds to the transistor. Collector; the output of each switch corresponds to the emitter of the triode.
  • the power supply when the power supply is in the positive half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor C2 via the inductance coil L0, the third resistor R3, and the adjustable resistance network, and at the same time, the power supply passes the inductance coil LO, The third resistor R3, the fifth diode D5, the eighth resistor R8, the first switch Q1, and the seventh diode D7 charge the second capacitor C2.
  • the first switch is simultaneously passed through the rectifier bridge stack BD1 to the first switch.
  • the tube Q1 provides power, so a positive bias is provided to the first switching tube Q1 within T time, and the first switching tube Q1 is turned on immediately after turning on.
  • the power supply When the power supply is in the negative half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor C2 via the inductor coil L0, the third resistor R3, and the adjustable resistor network, and at the same time, the power supply passes the inductor coil LO, the third resistor R3, The fourth diode D4, the third switching transistor Q3, the seventh resistor R7, and the sixth diode D6 charge the second capacitor C2.
  • the third switching transistor Q3 After the power is turned on, the third switching transistor Q3 is powered by the rectifier bridge stack BD1 at the same time. Therefore, a positive bias is provided to the third switching transistor Q3 within the time T, and the third switching transistor Q3 is turned on after being turned on.
  • the timing off time T is several alternating cycles of the power supply.
  • the specific implementation principle is as follows: the third capacitor C3 in the compensation circuit is charged to the breakdown voltage of the Zener tube ZD1 and the Zener ZD1 breaks through after T time.
  • the twelfth resistor R12 provides a forward bias current to the second switch Q2, the second switch Q2 is turned on, the first switch Q1 and the third switch Q3 are turned off, and the charging current for the second capacitor C2 is ended,
  • the compensation current provided by the compensation circuit is suspended, and then triggered by the main trigger control loop, so that the load RL enters the normal working state, and then the varistor RP1 is adjusted to achieve the required working conditions according to the actual needs of the user. Different loads can be adjusted by adjusting the trimmer resistors .
  • the ABC circuit network in the dashed frame constitutes a compensation circuit for controlling the electronic timing switch to realize the compensation current, which specifically includes a seventh diode D7, an eighth diode D8, and an eighth resistor.
  • R8 ninth resistor R9, tenth resistor R10, twelfth resistor R12, third capacitor C3, voltage regulator ZD1, first switch Q1 and second switch Q2; one end of the ninth resistor R9 is connected to all The input terminal of the adjustable resistor network is connected; the other end of the ninth resistor R9 is connected to one end of the eighth resistor R8, one end of the tenth resistor R10, and one end of the eleventh resistor R11, respectively.
  • the other end of the eighth resistor R8 is connected to the input terminal of the first switching tube Q1; the output terminal of the first switching tube Q1 is connected to the anode of the seventh diode D7;
  • the cathode of the seventh diode D7 is connected to the output terminal of the adjustable resistance network;
  • the cathode of the voltage regulator tube ZD1 is connected between the eleventh resistor R11 and the third capacitor C3, and the stable
  • the anode of the pressure tube ZD1 is connected to the control terminal of the second switching tube Q2 through a twelfth resistor R12;
  • the control terminal of the first switching tube Q1 is connected to the other end of the tenth resistor R10 and the input terminal of the second switching tube Q2, respectively;
  • the output terminal of the second switching tube Q2 is connected to the three capacitors, the first The anodes of the eight diodes D8 are connected respectively;
  • the cathodes of the eighth diode D8 are connected to the load RL.
  • the first switch Q1 and the second switch Q2 are NPN transistors, and the control end of each switch corresponds to the base of the transistor; the input end of each switch corresponds to the collector of the transistor; each switch The output end corresponds to the emitter of the transistor.
  • the power supply when the power supply is in the positive half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor through the inductance coil L0, the third resistor R3, and the adjustable resistance network, and at the same time, the power supply passes the inductance coil L0, the first The three resistors R3, the ninth resistor R9, the eighth resistor R8, the first switching transistor Q1, and the seventh diode D7 charge the second capacitor C2.
  • the first switching transistor Q1 After the power is turned on, the first switching transistor Q1 is provided through the ninth resistor R9 at the same time.
  • the power supply therefore, provides a positive bias to the first switching transistor Q1 within T time, and the first switching transistor Q1 is turned on immediately after being turned on.
  • the power supply When the power supply is in the negative half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor via the inductor coil L0, the third resistor R3, and the adjustable resistor network.
  • the compensation circuit is due to the pair of the seventh diode D7 and the eighth diode D8.
  • the negative half cycle is isolated and cannot form a current loop.
  • This compensation circuit only uses the positive half cycle for charging compensation, and plays the role of compensating current within the timing off time T; the timing off time T is several alternating cycles of the power supply, and the specific implementation principle is as follows: the third capacitor in the above compensation circuit C3 is charged to the breakdown voltage of Zener ZD1 after T time, Zener ZD1 breaks through, and provides forward bias current to the second switch Q2 through the twelfth R12, and the second switch Q2 is turned on. The first switch Q1 is turned off, the charging current to the second capacitor is terminated, the compensation current provided by the compensation circuit is stopped, and then triggered by the main trigger control loop to bring the load RL into a normal working state. To achieve the required working conditions, different loads can be achieved by adjusting the trimmer resistor RP2.
  • the ABC circuit network in the dashed line frame constitutes a compensation circuit of controlled electronic timing switch to realize the compensation current, which specifically includes: a fifth diode D5, an eighth diode D8, a first diode Eight resistors R8, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor R12, voltage regulator ZD1, third capacitor C3, first switch Q1 and second switch Q2; said An output terminal of the first switching tube Q1, an output terminal of the second switching tube Q2, and an end of the third capacitor C3 are respectively connected to the input terminal of the adjustable resistance network; the input terminal of the first switching tube Q1 is The eight resistor R8 is connected to the cathode of the fifth diode D5; the anode of the fifth diode D5 is connected to the output terminal of the adjustable resistance network; the input terminal of the second switch tube Q2 passes through the first Ten resistors R10 and ninth resistor R9 are connected to the cathode of
  • the first switch Q1 and the second switch Q2 are NPN transistors, and the control end of each switch corresponds to the base of the transistor; the input end of each switch corresponds to the collector of the transistor; each switch The output end corresponds to the emitter of the transistor.
  • the power supply when the power supply is in the positive half cycle and the switch KRP1 is closed, the power supply charges the second capacitor through the inductor L0, the third resistor R3, and the adjustable resistor network.
  • the compensation circuit is caused by the fifth diode D5 and The eighth diode D8 isolates the positive half cycle and cannot form a current loop.
  • the power supply When the power supply is in the negative half cycle, after the switch KRP1 is closed, the power supply charges the second capacitor via the inductor coil L0, the third resistor R3, and the adjustable resistor network, and at the same time, the power supply passes the inductor coil L0, the third resistor R3, the first resistor A switch Q1, an eighth resistor R8, and a fifth diode D5 charge the second capacitor C2.
  • the first switch Q1 is also supplied with power by the eighth diode D8 at the same time.
  • the first switching tube Q1 provides a positive bias, and the first switching tube Q1 is turned on immediately after being turned on.
  • This compensation circuit only uses the negative half cycle for charging compensation, and plays the role of compensating current within the timing off time T; the timing off time T is several alternating cycles of the power supply, and the specific implementation principle is as follows: the third capacitor in the above compensation circuit C3 is charged to the breakdown voltage of Zener ZD1 after T time, Zener ZD1 is broken through, and the twelfth resistor R12 provides a forward bias current to the second switch Q2, and the second switch Q2 is turned on.
  • the invention uses an adjustable resistor network to connect a compensation circuit in parallel, and uses the compensation circuit to provide current compensation for the adjustable resistor network within a period of time after the power switch is closed, so as to meet the load startup current of the load and make the compensation circuit
  • the switch actuator is continuously turned on during this period; the work of the lamp is at or close to the minimum self-sustainable brightness state after the dimming switch is closed, or the fan is at the minimum maintaining working current after the governor switch is closed. State to solve the problems of dead stroke (invalid stroke) and inconvenience in starting up (after the dimmer switch and speed switch are closed).
  • the compensation circuit is mainly composed of a fourth diode, a fifth diode, a seventh resistor, an eighth resistor, a normally open relay, a sixth diode, a seventh diode, a rectifier bridge stack, a ninth resistor, and a voltage regulator.
  • Electronic components such as a module, a fourth capacitor, a tenth resistor, an eleventh resistor, and a second switch; the invention is easy to implement in industry, and the fourth diode, the fifth diode, the seventh resistor, Eighth resistor, normally open relay, sixth diode, seventh diode, rectifier bridge stack, ninth resistor, voltage regulator module, fourth capacitor, tenth resistor, eleventh resistor, second switch tube, etc.
  • Electronic components are also easy to process in industry.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Electronic Switches (AREA)

Abstract

La présente invention concerne un circuit de régulation de lumière et de régulation de vitesse, comprenant un circuit déclencheur principal connecté en série entre une extrémité sous tension et une extrémité neutre ; le circuit déclencheur principal comprend un réseau de résistances réglables ; la présente invention comprend en outre un circuit de compensation connecté en parallèle au réseau de résistances réglables, le circuit de compensation comprenant un élément d'exécution de commutateur, et le circuit de compensation fournissant une compensation de courant au réseau de résistances réglables durant une période de temps après que le commutateur d'alimentation électrique est fermé afin d'atteindre le courant de démarrage d'une charge et d'amener l'élément d'exécution de commutateur dans le circuit de compensation à être activé en continu durant ladite période de temps ; par conséquent, la luminosité de la charge ou la vitesse de la charge peuvent être réglées au moyen du réseau de résistances réglables et l'élément d'exécution de commutateur dans le circuit de compensation. La présente invention amène une lampe à fonctionner dans un état de luminosité minimale ou proche de la luminosité minimale qui peut être autoentretenu par la lampe après que le commutateur de régulation de lumière est fermé, ou amène un ventilateur à être dans un état de courant de fonctionnement minimal après qu'un commutateur de régulateur de vitesse est fermé afin de résoudre le problème de course morte (course invalide) lors du démarrage ainsi que le problème dans lequel l'usage n'est pas pratique.
PCT/CN2019/090740 2018-09-14 2019-06-11 Circuit de régulation de lumière et de régulation de vitesse WO2020052297A1 (fr)

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CN109728588B (zh) * 2019-03-05 2024-07-05 国家电网有限公司 一种基于电流补偿的晶闸管辅助控制装置
CN110730544A (zh) * 2019-10-22 2020-01-24 深圳伯图康卓智能科技有限公司 一种机械开关调光调速控制系统
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