WO2017164029A1 - Dispositif et système de commutateur électronique - Google Patents

Dispositif et système de commutateur électronique Download PDF

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Publication number
WO2017164029A1
WO2017164029A1 PCT/JP2017/010338 JP2017010338W WO2017164029A1 WO 2017164029 A1 WO2017164029 A1 WO 2017164029A1 JP 2017010338 W JP2017010338 W JP 2017010338W WO 2017164029 A1 WO2017164029 A1 WO 2017164029A1
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WIPO (PCT)
Prior art keywords
unit
power supply
switch
electronic switch
voltage
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PCT/JP2017/010338
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English (en)
Japanese (ja)
Inventor
賢吾 宮本
後藤　潔
智裕 三宅
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パナソニックＩｐマネジメント株式会社
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Publication of WO2017164029A1 publication Critical patent/WO2017164029A1/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/18—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using Zener diodes

Definitions

  • the present invention generally relates to an electronic switch device and an electronic switch system, and more particularly to an electronic switch device and an electronic switch system including a switch unit that is electrically connected between an AC power supply and a load.
  • an electronic switch device (automatic switch with a heat ray sensor) that detects a heat ray radiated from a human body and turns on / off a load is known (for example, see Patent Document 1).
  • the electronic switch device described in Patent Document 1 includes a load control circuit having a primary winding of a current transformer, a full-wave rectifier, and a bidirectional thyristor that controls on / off of power supply to a load between connection terminals. Are connected in series.
  • a power supply circuit is connected between the DC output terminals of the full-wave rectifier.
  • the power supply circuit supplies power to a constant voltage circuit that generates a control power supply (operation power supply) for a control IC (Integrated Circuit) when the load is not energized.
  • the auxiliary power supply circuit supplies power to the constant voltage circuit by the current flowing through the secondary winding of the current transformer.
  • Patent Document 1 has a problem that it is difficult to reduce the size because a current transformer is required to secure a control power supply when a load is energized.
  • the present invention has been made in view of the above reasons, and an object thereof is to provide an electronic switch device and an electronic switch system that can be miniaturized.
  • An electronic switch device includes a switch unit, a power supply unit, a control unit, and a power feeding circuit.
  • the switch unit is electrically connected between an AC power source and a load, and switches between conduction and non-conduction between the AC power source and the load.
  • the power supply unit is electrically connected between both ends of the switch unit, and generates a control voltage by power supplied from the AC power supply.
  • the control unit operates by receiving the control voltage from the power supply unit, and controls the switch unit.
  • the power feeding circuit is electrically connected between both ends of the switch unit, and serves as a single path for the supplied power between the switch unit and the power supply unit.
  • the power supply circuit is configured to supply the supply power to the power supply unit when the magnitude of the voltage between the both ends of the switch unit exceeds a predetermined value.
  • An electronic switch system includes a plurality of the electronic switch devices, and the plurality of switch units included in the plurality of electronic switch devices are electrically connected in parallel between an AC power supply and a load. .
  • FIG. 1 is a schematic circuit diagram showing a configuration of an electronic switch device according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic circuit diagram showing the configuration of the electronic switch system according to the first embodiment of the present invention.
  • FIG. 3 is a circuit diagram showing a configuration of a power generation block of the above electronic switch device.
  • FIG. 4 is a timing chart showing the operation of the above electronic switch system.
  • FIG. 5 is a schematic circuit diagram showing a configuration of an electronic switch system according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic circuit diagram showing the configuration of the electronic switch device according to the third embodiment of the present invention.
  • the electronic switch devices 1 ⁇ / b> A and 1 ⁇ / b> B according to the first embodiment are electrically connected between an AC power supply 11 and a load 12, and are energized from the AC power supply 11 to the load 12. Is a wiring device for switching between.
  • the electronic switch devices 1A and 1B are attached to a wall of a house, for example.
  • the AC power supply 11 is, for example, a single-phase 100 [V], 60 [Hz] commercial power supply.
  • the load 12 is, for example, a lighting device including a light source having an LED (Light Emitting Diode) and a lighting circuit that turns on the light source. In the load 12, the light source is turned on when power is supplied from the AC power supply 11.
  • the electronic switch system 10 is configured by two electronic switch devices 1A and 1B. That is, the electronic switch system 10 includes a plurality (here, two) of electronic switch devices 1A and 1B.
  • the two electronic switch devices 1A and 1B adopt a common configuration.
  • each of the two electronic switch devices 1A and 1B is referred to as an “electronic switch device 1”.
  • the electronic switch device 1 includes a switch unit Q1 including a semiconductor switch such as a bidirectional thyristor and a transistor.
  • the electronic switch device 1 electronically switches between conduction and non-conduction between the AC power supply 11 and the load 12 by electronically controlling the switch unit Q1.
  • the electronic switch device 1 is a so-called three-way switch that can connect three wires.
  • the electronic switch device 1 includes three connection terminals 101, 102, and 103. Therefore, in the electronic switch system 10 in which the two electronic switch devices 1A and 1B are combined, it is possible to switch the energization state to the load 12 at, for example, two places, the upper floor portion and the lower floor portion of the stairs in the building. is there.
  • connection terminal 101 of the electronic switch device 1 ⁇ / b> A (hereinafter also referred to as “first electronic switch device 1 ⁇ / b> A”) is connected to the load 12.
  • a connection terminal 101 of the electronic switch device 1 ⁇ / b> B (hereinafter also referred to as “second electronic switch device 1 ⁇ / b> B”) is connected to the AC power supply 11.
  • the connection terminal 102 of the electronic switch device 1A is connected to the connection terminal 103 of the electronic switch device 1B.
  • the connection terminal 103 of the electronic switch device 1A is connected to the connection terminal 102 of the electronic switch device 1B.
  • the connection terminal 101 and the connection terminal 102 are connected inside the electronic switch device 1.
  • each electronic switch device 1 the switch part Q 1 is connected between the connection terminal 101 and the connection terminal 103. Therefore, in each electronic switch device 1, in a state where the switch portion Q1 is conductive (ON), the connection terminal 101, the connection terminal 102, and the connection terminal 103 are electrically connected via the switch portion Q1. Further, in each electronic switch device 1, the connection terminal 101, the connection terminal 102, and the connection terminal 103 are non-conductive when the switch portion Q ⁇ b> 1 is non-conductive (off).
  • the plurality of switch parts Q1 provided in each of the plurality (two in this case) of electronic switch devices 1A and 1B are electrically connected in parallel between the AC power supply 11 and the load 12. Therefore, in the electronic switch system 10, if one of the switch portions Q1 of the two electronic switch devices 1A and 1B is conductive, the AC power supply 11 and the load 12 are conductive, and the two electronic switch devices 1A, 1A, Power is supplied from the AC power supply 11 to the load 12 via 1B. Therefore, in the electronic switch system 10, it is possible to switch the energization state to the load 12 in both the switch unit Q1 of the electronic switch device 1A and the switch unit Q1 of the electronic switch device 1B.
  • the electronic switch device 1 includes a rectifier 2 and a circuit unit 3 in addition to the switch unit Q1 and the three connection terminals 101, 102, and 103, as shown in FIG.
  • the switch part Q1, the three connection terminals 101, 102, 103, the rectifier 2 and the circuit part 3 are housed in one housing, and the housing is fixed to a wall or the like, whereby the electronic switch device 1 Is attached to a wall or the like.
  • the switch unit Q1 is electrically connected between the AC power supply 11 and the load 12, and switches between conduction and non-conduction between the AC power supply 11 and the load 12.
  • the switch part Q1 is configured by a three-terminal bidirectional thyristor (triac).
  • the switch part Q ⁇ b> 1 is electrically connected between the connection terminal 101 and the connection terminal 103, and switches bidirectional current passage / cutoff between the connection terminal 101 and the connection terminal 103.
  • the control terminal of the switch unit Q1 (the gate terminal of the bidirectional thyristor) is electrically connected to the circuit unit 3. Thereby, the switch part Q1 is controlled by the control part 5 mentioned later.
  • the switch portion Q1 is represented by a circuit symbol similar to that of a mechanical switch having a contact.
  • connection terminal 101, 102, 103 is a component to which wiring is electrically and mechanically connected.
  • the switch portion Q1 is connected between the first connection terminal 101 and the third connection terminal 103.
  • the second connection terminal 102 is a feed terminal of the first connection terminal 101 and is electrically connected to the first connection terminal 101.
  • Rectifier 2 consists of a diode bridge.
  • the rectifier 2 performs full-wave rectification on the voltage applied between both ends of the switch unit Q ⁇ b> 1 (hereinafter also referred to as “inter-switch voltage Vsw”) and outputs the rectified voltage to the circuit unit 3. Therefore, the circuit unit 3 is connected between the DC output terminals of the rectifier 2.
  • the circuit unit 3 uses the electric power after full-wave rectification input from the rectifier 2 to generate a “control voltage” necessary for controlling the switch unit Q1 and driving the sensor unit 31, for example.
  • the switch part Q1 of the two electronic switch devices 1A and 1B is in a non-conductive state, and the AC voltage Vac is applied from the AC power supply 11 to the switch part Q1. That is, if both the two electronic switch devices 1A and 1B are in the OFF state, the inter-switch voltage Vsw is equal to the AC voltage Vac from the AC power supply 11.
  • the circuit unit 3 includes a power generation block 4, a control unit 5, a sensor unit 31, and a voltage monitoring unit 32.
  • the power supply generation block 4 includes a power supply circuit 41 and a power supply unit 42.
  • the power supply unit 42 is electrically connected between both ends of the switch unit Q1.
  • the power supply unit 42 is configured to generate a control voltage using power supplied from the AC power supply 11.
  • the power feeding circuit 41 is electrically connected between both ends of the switch unit Q1.
  • the power feeding circuit 41 serves as a single path of power supplied from the AC power supply 11 to the power supply unit 42 between the switch unit Q1 and the power supply unit 42.
  • “single” means that there is only one. That is, the power feeding circuit 41 forms a unique path as a path of power supplied to the power supply section 42 between the switch section Q1 and the power supply section 42. In other words, there is only one path of power supplied from the AC power supply 11 to the power supply unit 42 between the switch unit Q1 and the power supply unit 42. There is no supply power path.
  • the power feeding circuit 41 and the power supply unit 42 are electrically connected in series between the DC output terminals of the rectifier 2.
  • the power input terminal 401 corresponds to the input terminal of the power feeding circuit 41 and is electrically connected to the positive DC output terminal of the rectifier 2. Therefore, when the switch unit Q1 is in the off state, the full-wave rectified inter-switch voltage Vsw, that is, the pulsating voltage output from the rectifier 2 is between the power input terminal 401 and the ground (reference potential point). Will be applied.
  • the power supply output terminal 402 corresponds to the output terminal of the power supply unit 42 and is electrically connected to the control unit 5.
  • the power supply circuit 41 is configured to supply power to the power supply unit 42 when the magnitude (absolute value) of the inter-switch voltage Vsw becomes equal to or greater than a predetermined value.
  • the power feeding circuit 41 is, for example, a dropper circuit that steps down the input voltage (inter-switch voltage Vsw) and outputs it to the power supply unit 42.
  • the specific configuration of the power generation block 4 will be described in the section “(2.2) Configuration of the power generation block”.
  • the “terminal” such as “power input terminal” in the present embodiment may not be a component (terminal) for connecting an electric wire or the like, for example, a lead of an electronic component or a part of a conductor included in a circuit board. It may be.
  • the control unit 5 operates by receiving a control voltage from the power generation block 4.
  • the control unit 5 has a function of controlling the switch unit Q1. Specifically, the control unit 5 outputs a control signal to the control terminal of the switch unit Q1 (the gate terminal of the bidirectional thyristor) based on the detection result of the sensor unit 31, thereby making the switch unit Q1 conductive and non-conductive.
  • the switch unit Q1 is controlled to switch between conduction. Further, when the switch unit Q1 is turned on, the control unit 5 determines the timing for outputting the control signal based on the monitoring signal output from the voltage monitoring unit 32.
  • the control unit 5 includes a drive circuit for driving the switch unit Q1, and the control unit 5 directly controls the switch unit Q1.
  • the control unit 5 includes, for example, a microcomputer as a main configuration.
  • the microcomputer realizes a function as the control unit 5 by executing a program recorded in the memory of the microcomputer by a CPU (Central Processing Unit).
  • the program may be recorded in advance in a memory of a microcomputer, may be provided by being recorded on a recording medium such as a memory card, or may be provided through an electric communication line.
  • the program is a program for causing the microcomputer to function as the control unit 5.
  • the sensor unit 31 detects whether or not a person is present in the detection area.
  • the sensor unit 31 includes, for example, a pyroelectric element, and determines whether there is a person in the detection area by detecting infrared rays emitted from the human body.
  • the sensor unit 31 outputs to the control unit 5 an on control instruction for turning on the switch unit Q1.
  • the voltage monitoring unit 32 is configured to monitor (detect) the magnitude of the inter-switch voltage Vsw.
  • the voltage monitoring unit 32 is electrically connected between the DC output terminals of the rectifier 2 and monitors the magnitude of the inter-switch voltage Vsw after full-wave rectification.
  • the voltage monitoring unit 32 compares the magnitude (absolute value) of the inter-switch voltage Vsw with a reference value, and outputs a monitoring signal indicating the comparison result to the control unit 5.
  • the control unit 5 When receiving the ON control instruction from the sensor unit 31, the control unit 5 outputs a control signal to the switch unit Q1 based on the monitoring signal from the voltage monitoring unit 32. Specifically, based on the monitoring signal from the voltage monitoring unit 32, the control unit 5 causes the switch unit Q1 to conduct when the magnitude (absolute value) of the inter-switch voltage Vsw is greater than or equal to a reference value. Since the switch unit Q1 is composed of a bidirectional thyristor as described above, the switch unit Q1 becomes conductive when a control signal is input, and becomes non-conductive near the zero cross point (0 [V]) of the AC voltage Vac from the AC power supply 11.
  • the switch portion Q1 when the current flowing through the switch portion Q1 becomes 0 [A] after the switch portion Q1 is turned on, the switch portion Q1 becomes non-conductive. Therefore, depending on the type of the load 12, it is earlier than the zero cross point of the AC voltage Vac.
  • the switch part Q1 may become non-conductive at the timing. Therefore, the control unit 5 conducts the switch unit Q1 by outputting a control signal every half cycle of the AC voltage Vac. That is, the ON state of the switch part Q1 here includes not only the state in which the switch part Q1 is continuously conducted but also the state in which the switch part Q1 is intermittently conducted. Moreover, the control part 5 maintains the switch part Q1 non-conducting by not outputting a control signal to the switch part Q1, when making the switch part Q1 into an OFF state.
  • the power feeding circuit 41 includes a Zener diode ZD1, an active element Q10, a first resistor R1, a second resistor R2, a diode D1, and a current limiting unit 43.
  • the power supply unit 42 includes a capacitor C ⁇ b> 1 and a regulator 44.
  • the power feeding circuit 41 is a dropper circuit that steps down the voltage input from the power input terminal 401 and outputs the voltage to the power supply unit 42.
  • a resistor R1, an active element Q10, a diode D1, and a capacitor C1 are electrically connected in series.
  • the series circuit of the resistor R1, the active element Q10, and the diode D1 constitutes a part of the path of power supplied to the power supply unit 42, that is, a part of the charging path 40 of the capacitor C1.
  • the third resistor R3 of the current limiting unit 43 is interposed between the active element Q10 and the diode D1, but here the current limiting unit 43 is omitted first (that is, the active element Q10 and the diode D1 are directly connected).
  • the active element Q10 is a voltage-driven active element that is provided on the charging path 40 of the capacitor C1 between both ends of the switch unit Q1 and is turned on when the magnitude of the inter-switch voltage Vsw is a predetermined value or more.
  • the active element Q10 is composed of, for example, an enhancement type n-channel MOSFET (Metal-Oxide-Semiconductor-Field-Effect-Transistor).
  • the drain terminal of the active element Q10 is electrically connected to the power input terminal 401 through the resistor R1.
  • a source terminal serving as an output terminal of the active element Q10 is electrically connected to an anode terminal of the diode D1.
  • the cathode terminal of the diode D1 is electrically connected to the ground via the capacitor C1.
  • the “output terminal of the active element Q10” means a terminal that outputs a constant voltage when the active element Q10 is used as a constant voltage circuit in combination with the Zener diode ZD1.
  • a transistor has a pair of main terminals (a drain terminal and a source terminal in the case of a MOSFET) and a control terminal (a gate terminal in the case of a MOSFET), so that one of the pair of main terminals is active. This corresponds to the output terminal of the element Q10.
  • the resistor R2 and the Zener diode ZD1 are electrically connected in series between the power input terminal 401 and the ground.
  • the cathode terminal of the Zener diode ZD1 is electrically connected to the power input terminal 401 via the resistor R2.
  • the anode terminal of the Zener diode ZD1 is electrically connected to the ground.
  • the gate terminal (control terminal) of the active element Q10 is electrically connected to the cathode terminal of the Zener diode ZD1.
  • the regulator 44 is a three-terminal regulator (series regulator).
  • the input terminal of the regulator 44 is electrically connected to the high potential side terminal of the capacitor C1, that is, the cathode terminal of the diode D1.
  • the output terminal of the regulator 44 is electrically connected to the power supply output terminal 402.
  • the power supply circuit 41 receives power supplied from the AC power supply 11 and charges the capacitor C1 with a constant voltage based on the Zener voltage (breakdown voltage) of the Zener diode ZD1. That is, when a gate voltage higher than the threshold voltage of the active element Q10 is applied between the gate terminal and the source terminal of the active element Q10 by a series circuit of the resistor R2 and the Zener diode ZD1, a constant voltage is generated from the source terminal of the active element Q10. Is output. At this time, the voltage between the gate terminal of the active element Q10 and the ground is clamped to the Zener voltage of the Zener diode ZD1. Therefore, a voltage obtained by subtracting the gate voltage of the active element Q10 and the forward voltage of the diode D1 from the Zener voltage is applied between both ends of the capacitor C1.
  • the active element Q10 when the voltage across the switch Q1, that is, the voltage applied between the power supply input terminal 401 and the ground exceeds a predetermined value, the active element Q10 is turned on and the power supplied to the power supply 42 is supplied. Supplied.
  • the predetermined value here is a voltage obtained by adding the Zener voltage of the Zener diode ZD1, the gate voltage of the active element Q10, and the forward voltage of the diode D1 to the voltage across the capacitor C1 (hereinafter referred to as “minimum charging voltage”).
  • minimum charging voltage a voltage obtained by adding the Zener voltage of the Zener diode ZD1, the gate voltage of the active element Q10, and the forward voltage of the diode D1 to the voltage across the capacitor C1 (hereinafter referred to as “minimum charging voltage”).
  • the active element Q10 of the power supply circuit 41 is turned on, so that the input impedance of the power supply circuit 41 is in a low impedance state. Therefore, supply power is supplied to the power supply unit 42, and a control voltage is generated in the power supply unit 42. However, when the capacitor C1 is in a fully charged state, no current flows from the power supply circuit 41 to the power supply unit 42, so the input impedance of the power supply circuit 41 is in a high impedance state.
  • the minimum charging voltage (predetermined value) here is a voltage value necessary for the power feeding circuit 41 to supply power to the power supply unit 42, and depends on, for example, a circuit constant such as a Zener voltage of the Zener diode ZD1. It can be set arbitrarily.
  • the active element Q10 of the power feeding circuit 41 is a MOSFET, the minimum charging voltage is suppressed lower than the configuration in which the active element Q10 is a bipolar transistor (hereinafter referred to as “comparative example”). It is possible. The reason will be briefly described below.
  • the current path passing through the resistor R2 is required to have a relatively high impedance in order to suppress the occurrence of leakage current.
  • the leakage current here is a relatively large current that flows through the power feeding circuit 41 when the switch portion Q1 is non-conductive, and is a current that can cause a malfunction of the load 12.
  • the load 12 is a lighting device
  • a leak current occurs, a so-called flash phenomenon may occur in which the light source of the load 12 is temporarily turned on.
  • the inter-switch voltage Vsw necessary for flowing the base current to the bipolar transistor is relatively large.
  • the active element Q10 is a MOSFET, the active element Q10 is not limited as long as a predetermined gate voltage is applied to the active element Q10 regardless of the impedance of the current path passing through the resistor R2.
  • the power is turned on to supply power to the power supply unit 42. Therefore, in the electronic switch device 1 of the present embodiment, the minimum charging voltage can be suppressed lower (about 10 [V] as an example) as compared with the comparative example.
  • the current limiting unit 43 is provided on the path of power supplied to the power supply unit 42 including the active element Q10, that is, on the charging path 40 of the capacitor C1.
  • the current limiting unit 43 stops the supply of supply power to the power source unit 42 when a current of a specified value or more flows from the AC power source 11 to the power source unit 42.
  • the current limiting unit 43 stops the supply of supply power to the power supply unit 42 by turning off the active element Q10 when a current of a specified value or more flows through the active element Q10 of the power feeding circuit 41.
  • the current limiting unit 43 includes a third resistor R3, a fourth resistor R4, and a switch element Q11.
  • the resistor R3 is a shunt resistor that is electrically connected to the output terminal (source terminal) of the active element Q10 and functions as a detection resistor that detects a current flowing through the active element Q10.
  • the resistor R3 is electrically connected between the source terminal of the active element Q10 and the anode terminal of the diode D1 in the power feeding circuit 41.
  • the switch element Q11 is electrically connected between the output terminal (source terminal) and the control terminal (gate terminal) of the active element Q10.
  • the switch element Q11 is formed of an npn-type bipolar transistor.
  • the emitter terminal of the switch element Q11 is electrically connected to the source terminal of the active element Q10 via the resistor R3.
  • the collector terminal of the switch element Q11 is electrically connected to the gate terminal of the active element Q10.
  • the base terminal of the switch element Q11 is electrically connected to the source terminal of the active element Q10 via the resistor R4.
  • a series circuit of the resistor R3 and the resistor R4 is electrically connected between the base terminal and the emitter terminal of the switch element Q11.
  • the current limiting unit 43 turns on the switch element Q11 with the voltage across the resistor R3, thereby turning off the active element Q10. To. That is, when a current of a specified value or more flows through the active element Q10 through the resistor R3, the switch element Q11 is biased by the voltage generated in the resistor R3 due to this current, and the current flows into the base terminal of the switch element Q11 through the resistor R4. . At this time, when the switch element Q11 is turned on, the gate terminal and the source terminal of the active element Q10 are short-circuited, and the active element Q10 is turned off.
  • the charging path 40 of the capacitor C1 is cut off, and the generation of the control voltage in the power supply unit 42 is stopped.
  • the capacitor C ⁇ b> 1 is electrically disconnected from the power supply input terminal 401 by the current limiting unit 43, and the supply power to the power supply unit 42 is supplied. Stop.
  • the specified value here is a current value of the power feeding circuit 41 when the current limiting unit 43 is operated, and can be arbitrarily set by a circuit constant such as a resistance value of the resistor R3, for example.
  • a value obtained by adding a predetermined margin to the rated current value of the power feeding circuit 41 is set as the specified value.
  • FIG. 4 shows the AC voltage “Vac”, the inter-switch voltage “Vsw”, the monitoring signal “S1a” of the first electronic switching device 1A, the monitoring signal “S1b” of the second electronic switching device 1B, and the second electronic
  • the state (conduction / non-conduction) of the switch part Q1 of the switch apparatus 1B is shown.
  • Q1 representing the state of the switch part Q1
  • “ON” represents conduction and “OFF” represents non-conduction.
  • the signal levels of the monitoring signals S1a and S1b are L level (Low level) when the absolute value of the inter-switch voltage Vsw is greater than or equal to the reference value Vth1, and the absolute value of the inter-switch voltage Vsw is less than the reference value Vth1. Is at the H level (High level).
  • the inter-switch voltage Vsw is the same voltage as the AC voltage Vac.
  • FIG. 4 shows the voltage across the switch unit Q1 in the first electronic switch device 1A, but the voltage across the switch unit Q1 in the second electronic switch device 1B is also the voltage across the switch unit Q1 in the first electronic switch device 1A. Same as voltage.
  • the inter-switch voltage Vsw becomes sufficiently large in most of the period of one cycle of the AC voltage Vac. Therefore, in both of the two electronic switch devices 1A and 1B, the inter-switch voltage Vsw becomes equal to or higher than the minimum charging voltage during most of one cycle of the AC voltage Vac, and the power is supplied to the power source unit 42 to supply power.
  • the control voltage can be generated by the unit 42.
  • monitoring signals S1a and S1b are at the H level, but the magnitude (absolute value) of the inter-switch voltage Vsw is the reference value Vth1. If it becomes above, monitoring signal S1a, S1b will be L level. Therefore, in the example of FIG. 4, the monitoring signals S1a and S1b are at the H level during a period until the time point t3 when the magnitude (absolute value) of the inter-switch voltage Vsw reaches the reference value Vth1, and the monitoring signal S1a, S1b becomes L level.
  • the control unit 5 of the second electronic switch device 1B makes the switch unit Q1 conductive. Therefore, at time point t4 immediately after time point t3, the switch part Q1 of the second electronic switch device 1B becomes conductive, and the inter-switch voltage Vsw becomes substantially 0 [V]. Therefore, at time t4, the monitoring signals S1a and S1b become H level. While the switch part Q1 of the second electronic switch device 1B is in the ON state, the second electronic switch device 1B repeats the above-described operation, so that the inter-switch voltage Vsw is intermittent during the period from the time point t2 to the time point t4. Will occur.
  • the control voltage is generated by the power source unit 42 during the period from the time point t2 to the time point t4 in one cycle of the AC voltage Vac. Is possible. Also in the second electronic switch device 1B in which the switch unit Q1 is in the ON state, in the same manner as the first electronic switch device 1A, in the period from the time point t2 to the time point t4 in one cycle of the AC voltage Vac, The generation of the control voltage at 42 is possible.
  • the electronic switch device 1 if the inter-switch voltage Vsw is equal to or higher than the minimum charging voltage as described above, supply power is supplied from the power supply circuit 41 to the power supply unit 42, and a control voltage can be generated in the power supply unit 42. It is. Therefore, even when the inter-switch voltage Vsw is relatively low, the control voltage can be generated in the power supply unit 42 as long as the inter-switch voltage Vsw equal to or higher than the minimum charging voltage is generated.
  • the control voltage can be generated by the power supply unit. That is, if the reference value Vth1 is equal to or higher than the minimum charge voltage, the inter-switch voltage Vsw is always equal to or higher than the minimum charge voltage after the switch portion Q1 is turned off and before the switch portion Q1 is turned on again.
  • the control voltage can be generated by the power supply unit 42.
  • the electronic switch device 1 includes the switch unit Q1, the power supply unit 42, the control unit 5, and the power feeding circuit 41.
  • the switch unit Q1 is electrically connected between the AC power supply 11 and the load 12, and switches between conduction and non-conduction between the AC power supply 11 and the load 12.
  • the power supply unit 42 is electrically connected between both ends of the switch unit Q ⁇ b> 1 and generates a control voltage by power supplied from the AC power supply 11.
  • the control unit 5 operates by receiving the control voltage from the power supply unit 42, and controls the switch unit Q1.
  • the power feeding circuit 41 is electrically connected between both ends of the switch unit Q1, and serves as a single path for the supplied power between the switch unit Q1 and the power supply unit.
  • the power feeding circuit 41 is configured to supply the supplied power to the power source unit 42 when the voltage across the switch unit Q1 exceeds a predetermined value.
  • the supply power is supplied to the power supply unit 42 that generates the control voltage by the supply power from the AC power supply 11 through the single path including the power feeding circuit 41.
  • the power feeding circuit 41 supplies the power supply 42 to the power supply unit 42 when the magnitude of the voltage across the switch unit Q1 exceeds a predetermined value (minimum charging voltage). Therefore, the power feeding circuit 41 always has the same path to the power supply unit 42 regardless of whether the switch unit Q1 is in the on state or the off state without switching the power supply path to the power supply unit 42. Supply power is supplied.
  • the electronic switch device 1 does not require a current transformer to secure a control voltage when the load 12 is energized, and can be downsized. Furthermore, since the electronic switch device 1 does not require a configuration for switching the path of power supplied to the power supply unit 42 and complicated control for switching the path of power supplied to the power supply unit 42, the electronic switch device 1 can be further downsized. Is possible.
  • the power supply unit 42 includes the capacitor C1.
  • the power feeding circuit 41 preferably includes a voltage-driven active element Q10.
  • the active element Q10 is provided in the charging path 40 of the capacitor C1 between both ends of the switch unit Q1, and is turned on when the magnitude of the voltage between both ends of the switch unit Q1 is a predetermined value or more.
  • the capacitor C1 is charged and the control voltage is secured even when the voltage Vsw between the switches is lower than in the configuration in which the bipolar transistor is applied to the power supply circuit 41. Is possible.
  • this configuration is not an essential configuration for the electronic switch device 1.
  • the active element Q10 may not be a voltage-driven element.
  • the active element Q10 is preferably a field effect transistor (FET).
  • FET field effect transistor
  • the power feeding circuit 41 can be realized without using special parts.
  • the active element Q10 may be, for example, an IGBT (Insulated Gate Bipolar Transistor).
  • the power supply circuit 41 causes the power supply section 42 to flow when a current of a specified value or more flows from the AC power supply 11 to the power supply section 42. It is preferable to have a current limiting unit 43 that stops the supply of power supplied to the. According to this configuration, since the current flowing through the power feeding circuit 41 is limited, the stress applied to the components of the power feeding circuit 41 can be reduced, and the current capacity required for the power feeding circuit 41 can be reduced. Furthermore, according to the current limiting unit 43, it is possible to suppress malfunction of the load 12 (for example, occurrence of a flash phenomenon) by suppressing an inrush current flowing through the power supply circuit 41 when the AC power supply 11 is turned on, for example.
  • this configuration is not an essential configuration for the electronic switch device 1. For example, by applying an element having a large current capacity to the active element Q10 or applying an element having a small capacitance to the capacitor C1, the current can be reduced.
  • the restriction unit 43 may be omitted.
  • the electronic switch device 1 further includes a sensor unit 31 in any one of the first to fourth aspects, and the control unit 5 controls the switch unit Q1 based on the output of the sensor unit 31. It is preferable that it is comprised. According to this configuration, the sensor unit 31 can be driven by the control voltage generated by the power supply unit 42, and the switch unit Q1 can be automatically controlled by the output of the sensor unit 31. However, this configuration is not essential for the electronic switch device 1, and the sensor unit 31 is omitted as appropriate.
  • the electronic switch system 10 includes a plurality of electronic switch devices 1 according to any one of the first to fifth aspects, and the plurality of switch units Q1 included in the plurality of electronic switch devices 1 includes an AC power supply 11 and a load 12. They are electrically connected in parallel.
  • the electronic switch system 10 includes a plurality of electronic switch devices 1, and each of the plurality of electronic switch devices 1 includes a switch unit Q1, a power supply unit 42, a control unit 5, and a power feeding circuit 41.
  • the switch unit Q1 is electrically connected between the AC power supply 11 and the load 12, and switches between conduction and non-conduction between the AC power supply 11 and the load 12.
  • the power supply unit 42 is electrically connected between both ends of the switch unit Q ⁇ b> 1 and generates a control voltage by power supplied from the AC power supply 11.
  • the control unit 5 operates by receiving the control voltage from the power supply unit 42, and controls the switch unit Q1.
  • the power feeding circuit 41 is electrically connected between both ends of the switch unit Q1, and serves as a single path for the supplied power between the switch unit Q1 and the power supply unit.
  • the power feeding circuit 41 is configured to supply the supplied power to the power source unit 42 when the voltage across the switch unit Q1 exceeds a predetermined value.
  • the plurality of switch portions Q1 included in each of the plurality of electronic switch devices 1 are electrically connected in parallel between the AC power supply 11 and the load 12.
  • each of the plurality of electronic switch devices 1 does not switch the supply power path to the power supply unit 42, regardless of whether the switch unit Q1 is in the on state or the off state.
  • the power supply unit 42 is always supplied with supplied power through the same path.
  • each electronic switch device 1 does not need a current transformer to secure a control voltage when the load 12 is energized, and can be downsized.
  • each electronic switch device 1 does not require a configuration for switching a path of power supplied to the power supply unit 42 and a complicated control for switching a path of power supplied to the power supply unit 42, so that the electronic switch device 1 is further downsized. Is possible.
  • both the electronic switch device 1A in which the switch unit Q1 is in the off state and the electronic switch device 1B in which the switch unit Q1 is in the on state can be secured.
  • the electronic switch device 1 according to the first embodiment is merely an example of the present invention, and the present invention is not limited to the first embodiment, and the present invention is not limited to the first embodiment.
  • Various modifications can be made in accordance with the design and the like as long as they do not depart from the technical idea of the above. Below, the modification of Embodiment 1 is enumerated.
  • the load 12 is not limited to the lighting device, and may be, for example, an electric device such as a ventilation fan and a security device. Further, the load 12 is not limited to one electrical device, and may be a plurality of electrical devices electrically connected in series or in parallel.
  • the switch unit Q1 is not limited to the bidirectional thyristor, but may be other semiconductor switches.
  • the switch part Q1 may be two MOSFETs electrically connected in series between the first connection terminal 101 and the third connection terminal 103, for example.
  • the two MOSFETs are switched between bidirectional current passing / cut-off by connecting the source terminals to each other, that is, by connecting them in a so-called reverse series.
  • the switch portion Q1 may be a semiconductor device having a double gate (dual gate) structure using a wide band gap semiconductor material such as GaN (gallium nitride).
  • a drive circuit for driving the switch unit Q1 may be provided separately from the control unit 5.
  • the control voltage is also used for the operation of the drive circuit.
  • the sensor unit 31 is not limited to a human sensor that detects whether or not a person is present, and may be a brightness sensor, for example. Or the sensor part 31 may have both a human sensor and a brightness sensor.
  • the electronic switch device 1 is not limited to the configuration in which the switch unit Q1 is controlled based on the detection result of the sensor unit 31, and is, for example, an electronic switch device with a remote operation function, a timer function, or a dimming function. Also good. For example, if it is the electronic switch apparatus 1 with a remote operation function, the control part 5 will control switch part Q1 based on the wireless signal from a remote controller.
  • the electronic switch device 1 may be configured such that the switch unit Q1 is controlled based on a human operation on an operation unit such as a push button switch or a touch switch.
  • the voltage monitoring unit 32 may be configured to monitor the magnitude of the inter-switch voltage Vsw before full-wave rectification, not the inter-switch voltage Vsw after full-wave rectification. In this case, the voltage monitoring unit 32 is electrically connected between the AC input terminals of the rectifier 2. Furthermore, the voltage monitoring unit 32 may also be used as a zero cross detection unit for detecting the zero cross point of the AC voltage Vac. The zero-cross detection unit detects the zero-cross point when the inter-switch voltage Vsw shifts from less than the reference value (absolute value) set near 0 [V] to more than the reference value.
  • the voltage monitoring unit 32 is not an essential component for the electronic switch device 1 and may be omitted.
  • the control unit 5 may control the switch unit Q1 based on the detection result of the voltage across the capacitor C1, for example. Specifically, the control unit 5 causes the switch unit Q1 to conduct when the voltage across the capacitor C1 reaches a predetermined threshold.
  • the threshold here is the voltage across the capacitor C1 when the capacitor C1 is charged to such an extent that the operation of the control unit 5 and the like until the next time when the active element Q10 is turned on can be secured.
  • the specific circuits of the power feeding circuit 41 and the power supply unit 42 are not limited to the circuit shown in FIG. 3 and can be changed as appropriate.
  • the power feeding circuit 41 may be a constant voltage circuit having an operational amplifier in addition to the Zener diode ZD1 and the active element Q10, or the active element Q10 may be omitted.
  • the switch element Q11 of the current limiting unit 43 is not limited to a bipolar transistor, and may be, for example, an enhancement type n-channel MOSFET.
  • the capacitor C1 may be connected to the output of the regulator 44, or a capacitor other than the capacitor C1 may be connected to the output of the regulator 44.
  • the regulator 44 in the power supply unit 42 is not essential for the electronic switch device 1, and the regulator 44 may be omitted.
  • “more than” is the case where the two values are equal and the case where one of the two values exceeds the other. Including both.
  • “more than” here may be synonymous with “greater than” including only when one of the binary values exceeds the other. That is, whether or not the case where the two values are equal can be arbitrarily changed depending on the setting of the reference value or the like, so there is no technical difference between “greater than” or “greater than”.
  • “less than” may be synonymous with “below”.
  • the electronic switch system 10A As shown in FIG. 5, the electronic switch system 10A according to the second embodiment includes a combination of three electronic switch devices 1A, 1B, and 1C.
  • the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.
  • the electronic switch devices 1A and 1B are so-called three-way switches as in the first embodiment.
  • the electronic switch device 1C is a so-called four-way switch that can connect four wires.
  • the electronic switch device 1C includes a fourth connection terminal 104 in addition to the three connection terminals 101, 102, 103 similar to the electronic switch devices 1A, 1B.
  • connection terminal 103 and the connection terminal 104 are connected inside the electronic switch device 1C.
  • the connection terminal 102 of the electronic switch device 1A is connected to the connection terminal 101 of the electronic switch device 1C.
  • the connection terminal 103 of the electronic switch device 1A is connected to the connection terminal 104 of the electronic switch device 1C.
  • the connection terminal 102 of the electronic switch device 1B is connected to the connection terminal 103 of the electronic switch device 1C.
  • the connection terminal 103 of the electronic switch device 1B is connected to the connection terminal 102 of the electronic switch device 1C.
  • the plurality of switch units Q1 included in each of the plurality (here, three) of electronic switch devices 1A, 1B, and 1C are electrically connected in parallel between the AC power supply 11 and the load 12. Is done. Therefore, if any one of the switch units Q1 of the three electronic switch devices 1A, 1B, and 1C is conductive, the AC power source 11 and the load 12 are conductive, and the three electronic switch devices 1A, 1B, and 1C are connected. The power is supplied from the AC power supply 11 to the load 12.
  • the energization state to the load 12 can be switched in all of the switch unit Q1 of the electronic switch device 1A, the switch unit Q1 of the electronic switch device 1B, and the switch unit Q1 of the electronic switch device 1C. It is. Therefore, in the electronic switch system 10A in which the three electronic switch devices 1A, 1B, and 1C are combined, the energization state to the load 12 can be switched at three locations.
  • a current transformer is not required to secure a control voltage when the load 12 is energized, and the electronic switch device 1 can be downsized. There is an advantage that there is.
  • the electronic switch system 10A may include two or more electronic switch devices 1C (so-called four-way switches), and may include a total of four or more electronic switch devices 1A, 1B, and 1C. Good.
  • the plurality of switch units Q1 included in each of the plurality of electronic switch devices 1A, 1B, and 1C are electrically connected in parallel between the AC power supply 11 and the load 12, so that the load 12 is energized. Can be switched at four or more locations.
  • the configuration of the second embodiment (including the modification) can be applied in combination with the configuration of the first embodiment (including the modification) as appropriate.
  • the electronic switch device 1D according to the third embodiment is a so-called one-sided switch that can connect two wires as shown in FIG.
  • the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.
  • the electronic switch device 1D includes two connection terminals 101 and 103.
  • the electronic switch device 1D has a configuration in which the connection terminal 102 of the three connection terminals 101, 102, 103 is omitted from the electronic switch device 1A of Embodiment 1 (see FIG. 2).
  • connection terminal 101 of the electronic switch device 1D is connected to the load 12, and the connection terminal 103 of the electronic switch device 1D is connected to the AC power source 11.
  • the switch unit Q1 of the electronic switch device 1D is electrically connected between the AC power supply 11 and the load 12. Therefore, if the switch part Q1 of the electronic switch device 1D is conductive, the AC power source 11 and the load 12 are conductive, and power is supplied from the AC power source 11 to the load 12 via the electronic switch device 1D.
  • Embodiment 3 can be applied in combination with the configuration of Embodiment 1 (including modifications) as appropriate.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Nonlinear Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Electrical Variables (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Rectifiers (AREA)

Abstract

L'invention concerne un dispositif et un système de commutateur électronique qui peuvent être miniaturisés. Un dispositif (1) de commutateur électronique selon l'invention comporte une partie (Q1) de commutateur, une partie (42) de source d'alimentation, une partie (5) de commande et un circuit (41) d'alimentation. La partie (42) de source d'alimentation est raccordée électriquement entre les extrémités de la partie (Q1) de commutateur et génère une tension de commande en utilisant une énergie fournie en provenance d'une source d'alimentation à courant alternatif. La partie (5) de commande fonctionne en recevant la tension de commande fournie en provenance de la partie (42) de source d'alimentation et commande la partie (Q1) de commutateur. Le circuit (41) d'alimentation est raccordé électriquement entre les extrémités de la partie (Q1) de commutateur et est le seul itinéraire pour l'énergie fournie entre la partie (Q1) de commutateur et la partie (42) de source d'alimentation. Le circuit (41) d'alimentation est configuré pour fournir l'énergie fournie à la partie (42) de source d'alimentation lorsque la tension entre les extrémités de la partie (Q1) de commutateur est supérieure ou égale à une valeur prescrite.
PCT/JP2017/010338 2016-03-25 2017-03-15 Dispositif et système de commutateur électronique WO2017164029A1 (fr)

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JP2016062510A JP6635301B2 (ja) 2016-03-25 2016-03-25 電子スイッチ装置及び電子スイッチシステム
JP2016-062510 2016-03-25

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WO2014188711A1 (fr) * 2013-05-20 2014-11-27 パナソニックＩｐマネジメント株式会社 Circuit d'alimentation électrique à courant continu

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