CN102171623A - Load controller - Google Patents
Load controller Download PDFInfo
- Publication number
- CN102171623A CN102171623A CN2009801323214A CN200980132321A CN102171623A CN 102171623 A CN102171623 A CN 102171623A CN 2009801323214 A CN2009801323214 A CN 2009801323214A CN 200980132321 A CN200980132321 A CN 200980132321A CN 102171623 A CN102171623 A CN 102171623A
- Authority
- CN
- China
- Prior art keywords
- load
- close unit
- cut
- power
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
Abstract
A load controller includes a main opening/closing unit which has a switch element of a transistor structure and controls supply of power to a load; a auxiliary opening/closing unit which has a switch element of a thyristor structure and controls supply of power to the load when the main opening/closing unit is non-conductive; a control circuit which controls opening/closing of the main opening/closing unit and the auxiliary opening/closing unit; a voltage detector which detects a voltage inputted to a third power source, wherein the control circuit makes the main opening/ closing unit conductive for a first period of time when the voltage detector detects that the voltage inputted to the third power source reaches a voltage threshold, and makes the auxiliary opening/closing unit conductive for a second period of time when the main opening/closing unit is made non-conductive.
Description
Technical field
The present invention relates to be connected in series in the AC power source and such as two linear load controllers between the load of light fixture etc.
Background technology
Used the load controller of the light fixture of the non-contact switch element that is used for employing such as TRIAC (triac) or thyristor (thyristor) traditionally.Connect purpose for simple wiring, such load controller normally two line types and be connected in series between AC power source and the load.Yet, in the load controller that is connected in series in like this between AC power source and the load, guarantee that himself circuit power becomes the major issue that will solve.
The load controller 50 of first conventional example shown in Figure 13 is connected in series between AC power source 2 and the load 3 and comprises main cut-off/close unit 51, rectifier 52, control circuit 53, be used for first power source 54 to control circuit 53 supply firm powers, be used for when load 3 is not powered, supplying second power source 55 of power to first power source 54, be used for when load 3 is powered, supplying the 3rd power source 56 of power to first power source 54, Weak current is conducted to the auxiliary cut-off/close unit 57 of load 3.The on-off element 51a of main cut-off/close unit 51 is made of TRIAC.
On the other hand, under conducting (ON) state of the load controller 50 that load 3 is powered, by from control signal conducting the 3rd power source 56 of control circuit 53 and the impedance that reduces load controller 50 with the flow through magnitude of current of load 3 of increase.The electric current of the 3rd power source 56 of flowing through first power source 54 of also flowing through, and begin buffer condenser 59 chargings.Become when being higher than predetermined threshold in the charging voltage increase of buffer condenser 59, the Zener diode 56a puncture (break down) and the electric current that are included in the 3rd power source 56 begin to flow to the grid of auxiliary cut-off/close unit 57, thereby make auxiliary cut-off/close unit 57 can lead (closure state).As a result, the electric current that flows to the 3rd power source 56 from rectifier 52 begin to flow through auxiliary cut-off/close unit 57 and also flow to the grid of the on-off element 51a of main cut-off/close unit 51, thus make main cut-off/close unit 51 can lead (closure state).Therefore, almost whole power are supplied to load 3.
In case make main cut-off/close unit 51 can lead (closure state), electric current continues to flow.Yet when exchange current reached zero cross point, on-off element 51a became non-leading from ground connection or inefficacy (extinguished) (i.e. itself by) and main cut-off/close unit 51.When main cut-off/close unit 51 becomes non-leading (off-state), electric current once more from rectifier 52 flow to first power source 54 via the 3rd power source 56 and load controller 50 executable operations to guarantee himself circuit power.That is, in per 1/2 cycle of exchange current, the operation that repeated boad controller 50 is guaranteed the operation of himself circuit power and auxiliary cut-off/close unit 57 and main cut-off/close unit 51 can be led.
The load controller 60 of second conventional example shown in Figure 14 is connected in series between AC power source 2 and the load 3 and comprises main cut-off/close unit 61, rectifier 62, control circuit 63, be used for first power source 64 to control circuit 63 supply firm powers, be used for when load 3 is not powered, supplying second power source 65 of power to first power source 64, be used for when load 3 is powered, supplying the 3rd power source 66 of power to first power source 64, detect the zero-crossing detector 67 of the zero cross point of load current.The on-off element 61a of main cut-off/close unit 61 is made of two MOSFET and adopts incandescent lamp bulb as load to be controlled.
To load 3 supply power the time, the on-off element 61a of main cut-off/close unit 61 became and can lead in the period of determining according to the exterior lighting grade.Specifically, on-off element 61a became in the moment that zero-crossing detector 67 detects the zero cross point of voltage can lead (closure state), and after the above-mentioned period passed, on-off element 61a became non-leading (off-state).When main cut-off/close unit 61 non-leading, with identical in first conventional example, load controller 60 is guaranteed himself circuit power.When main cut-off/close unit 61 non-leading, zero-crossing detector 67 detects zero cross point and repeats to make on-off element 61a to lead in per 1/2 cycle of exchange current.
Under the on-off element of main cut-off/close unit 51 is situation as TRIAC in the load controller 50 of first conventional example or thyristor, needs wave filter to be reduced in the noise that when load 3 supply power, generates and avoid because the fault that the noise that transmits from power source 2 when stopping to load 3 supply power causes.Yet, owing to be included in the size of the coil 58 in this wave filter and the heat that generates by coil 58, the size that is difficult to dwindle load controller.
In order under the situation of not using wave filter, to reduce because the noise that load controller produces, for example disclosed load controller (the 3rd conventional example) comprises the on-off element (first switch unit) of main cut-off/close unit and second switch unit with conducting resistance bigger than the conducting resistance of first switch unit in patent documentation 1, wherein makes the first switch unit conducting after the second switch unit conducting.Yet in the 3rd such conventional example, owing to increased the quantity of on-off element and the complicacy of circuit arrangement, it is complicated that the conducting time sequence control becomes.
In addition, the on-off element 61a of main cut-off/close unit 61 be as the transistorized situation in the load controller 60 of second conventional example under, load has to be limited to such as the such load of incandescent lamp bulb, and wherein load current and load voltage are in homophase (in-phased) state (power factor=1).
In addition, usually, with the TRIAC of the on-off element of the cut-off/close unit of deciding or transistor is made by Si and be the vertical type that electric current flows on the vertical direction of element.Under the situation of TRIAC,, can lose when during conductivity, overcoming this barrier because p-n junction is present in the conducting path.Under transistorized situation,, therefore when conductivity, lose owing to require two elements to connect in opposite direction and higher as the resistance of the withstand voltage low carrier concentration layer that keeps layer.Because on-off element itself produces big heat dissipation, this requires large-sized heat sink conversely, therefore is difficult to realize high capacity and undersized load controller.Usually, such load controller is contained in can of being arranged on the wall etc.Yet,, therefore be difficult to aggregate erections such as load controller and other sensor, switches in normally used box because traditional load controller is difficult to minification.Therefore, need the littler load controller of size so that in the box of general size, be used in combination this load controller with other sensor, switch etc.
The prior art document
Patent documentation
Japanese Patent Laid is openly applied for No.2006-92859
Summary of the invention
In view of the above, the invention provides a kind of load controller, it can realize that size reduces and high capacity by the heat that generates in the conductivity that is reduced in load, and is not limited to the power factor such as the load of fluorescent light, incandescent lamp bulb etc.
According to a first aspect of the invention, a kind of load controller is provided, described load controller comprise on-off element with transistor arrangement and control to the main cut-off/close unit of the power supply of load, have the on-off element of thyristor structure and when non-the leading in described main cut-off/close unit, control to described load the power supply auxiliary cut-off/close unit and control described main cut-off/close unit and the control circuit of the cut-off/close of described auxiliary cut-off/close unit.
Also comprise via rectifier from the two ends received power of described main cut-off/close unit and to first power source of described control circuit supply firm power according to load controller of the present invention, via described rectifier from the two ends received power of described main cut-off/close unit and not to described load supply power the time to second power source of described first power source supply power, and at the 3rd power source of when power is supplied in described load, supplying power under the state of described main cut-off/close unit or described auxiliary cut-off/close unit closure to described first power source.
And, load controller according to the present invention comprises the voltage-level detector that detects the voltage that inputs to described the 3rd power source, wherein when described voltage-level detector detects the described voltage that inputs to described the 3rd power source and reaches voltage threshold, described control circuit can be led described main cut-off/close unit in first period, and described auxiliary cut-off/close unit can be led when becoming non-leading in described main cut-off/close unit in second period.
Utilize such configuration, because described control circuit detects at described voltage-level detector described main cut-off/close unit can be led in first period, and after described first period passes, therefore described main cut-off/close unit makes described auxiliary cut-off/close unit can lead in second period when becoming non-leading, the most of time internal powers in the half period of commercial power source are supplied to load from described main cut-off/close unit.
Afterwards, get more hour at the conductivity electrorheological, from described auxiliary cut-off/close unit to described load supply power.Carry out such operation based on described load current.Therefore, even dispose described main cut-off/close unit by the on-off element that adopts transistor arrangement, also can realize being suitable for the two two linear load controllers of fluorescent light and incandescent lamp bulb, be 1 load and be not limited to have power factor.
In addition, because the noise rank that the operating period at load controller can be generated suppresses very lowly, therefore can realize having the small size payload controller that wide region is fit to load.
The load controller of first aspect present invention also comprises the current detector of the electric current that detects the described auxiliary cut-off/close unit of flowing through, wherein described control circuit can be led described main cut-off/close unit when the electric current that exceeds current threshold is flowed through described auxiliary cut-off/close unit, and described auxiliary cut-off/close unit can be led when becoming non-leading in described main cut-off/close unit afterwards.
Utilize such configuration, because described main cut-off/close unit became at short notice and can lead once more when the electric current that detects the described auxiliary cut-off/close unit of flowing through at described current detector exceeded the current value that can be accepted by described auxiliary cut-off/close unit, can prevent that therefore the on-off element of auxiliary cut-off/close unit from damaging.And, because by using undersized on-off element to construct auxiliary cut-off/close unit, therefore can reduce the size of load controller and improve response various commercial power sources and overload.
The load controller of first aspect present invention also is included in the frequency detection circuit of the frequency that detected the power of waiting to be fed to described load before described load supply power, wherein, after this detection of frequency, remove described frequency detection circuit from the circuit that is used for load control, and when described power is supplied in described load, described control circuit is regulated described first period that described main cut-off/close unit can be led within it based on the power-frequency that is detected.
Utilize such configuration, can stop,, utilize the frequency in described frequency detection circuit detection power source (commercial power source) such as in the time before the beginning power input or when after power failure, recovering power to described load supply power.Thereby, can mainly be implemented to the conductivity of described load and can reduce the size of described load controller, and not increase the capacitance loss except described main cut-off/close unit by main cut-off/close unit with big conductivity ability.
In addition, owing to after detecting described frequency, remove described frequency detection circuit, therefore can prevent because the power consumption of the load controller that frequency detection circuit causes increases from the circuit that is used for load control.Specifically, the change frequency (50Hz or 60Hz) for commercial power source can adopt single load controller.
In the load controller of first aspect present invention, the described on-off element of described main cut-off/close unit is by can bi-direction controlled lateral transistor devices constituting, and described lateral transistor equipment comprises two electrodes that are connected respectively to power source and load and the control electrode that is arranged on the center section of described two electrodes.
Utilize such configuration, when described main cut-off/close unit becomes non-leading, apply low level signal from described control circuit to described control electrode G, and control electrode G has lowest electric potential than described main cut-off/close unit and exceeds electromotive force with a corresponding amplitude of diode of described rectifier.Here, enough be higher than the electromotive force of a described diode, then can keep described non-conductivity reliably if determine when the threshold value of between the leading of described main cut-off/close unit/non-leading, switching.Therefore, the control circuit that is driven by the control signal with several volts can directly be controlled high-tension commercial power source.In addition, can realize that size reduces and two linear load controllers of high power capacity.
In the load controller of first aspect present invention, the described on-off element of described main cut-off/close unit has lateral transistor structure, described lateral transistor structure comprises and is connected in series to AC power source and load respectively and is formed on first electrode and second electrode on the substrate surface, intermediate electric potential part with the intermediate electric potential between the electromotive force of the electromotive force of described first electrode and described second electrode, at least a portion of described intermediate electric potential part is formed on the described substrate surface, and execution is for the control electrode of the control of described intermediate electric potential part, at least a portion of described control electrode is connected the top of described intermediate electric potential part, and wherein said intermediate electric potential part and described control electrode are arranged on and can keep predetermined withstand voltage position with respect to described first electrode and described second electrode.
Utilize such configuration, by forming described intermediate electric potential part can keeping predetermined withstand voltage position with respect to described first electrode and described second electrode, even the threshold voltage at the signal that is applied to described control electrode drops to the minimum requirements level, also can make described on-off element conduction and cut-off reliably and can realize low conducting resistance.
In addition, be set to equal described intermediate electric potential electromotive force partly, can directly control the commercial power sources of high voltages by the control circuit 13 that drives by control signal with several volts by reference potential (GND) with control signal.
In addition, described main cut-off/close unit is not subjected to the influence of pressure drop of the diode of described rectifier.Therefore, even make the threshold voltage that between the conductivity of described main cut-off/close unit and non-conductivity, switches reduce, also can reliably keep non-conductivity.And, be formed in the lateral transistor element of two-dimensional electron gas layer as channel layer of heterogeneous interface in employing, make the conducting resistance of non-threshold voltage of leading of described element and described conductivity have relation.Therefore, reduce threshold voltage and can cause conducting resistance to reduce, this makes it possible to realize that size reduces and the load controller of high power capacity.
According to a second aspect of the invention, a kind of load control system is provided, and described load control system comprises as at the described a plurality of load controllers of first aspect present invention and will comprise that the control signal of the address signal that provides for load controller as described in each is transferred to the overhead control unit of corresponding load controller.
Utilize such configuration,, can be operatively connected to the load of described load controller individually by comprise the control signal of the address signal that provides for each load controller to corresponding load controller transmission from described overhead control unit.Specifically, for the load control system of commercialization, can be separately or integrally control a plurality of loads by using electronically controlled load controller.
Description of drawings
By following description to the embodiment that provides in conjunction with the accompanying drawings, purpose of the present invention and feature will become obviously, in the accompanying drawings:
Fig. 1 is the circuit diagram that illustrates according to the configuration of the load controller of first embodiment of the invention;
Fig. 2 is the sequential chart that illustrates according to the signal waveform of the various parts of the load controller of first embodiment;
Fig. 3 A and Fig. 3 B illustrate according to the waveform in the operation of the load controller of first embodiment, and it is that to be illustrated in power factor be not 1 o'clock waveform for 1 o'clock waveform and Fig. 3 B that Fig. 3 A is illustrated in power factor;
Fig. 4 is the circuit diagram that illustrates according to the configuration of the load controller of second embodiment of the invention;
Fig. 5 illustrates according to the waveform in the operation of the load controller of second embodiment;
Fig. 6 is the circuit diagram that illustrates according to the configuration of the load controller of third embodiment of the invention;
Fig. 7 is the circuit diagram that illustrates according to the configuration of the load controller of fourth embodiment of the invention;
Fig. 8 is the schematic sectional view of the configuration of the on-off element that uses in the main cut-off/close unit that is illustrated in according to the load controller of the 4th embodiment;
Fig. 9 is the circuit diagram that illustrates according to the configuration of the load controller of fifth embodiment of the invention;
Figure 10 is the planimetric map of the configuration of the on-off element that uses in the main cut-off/close unit that is illustrated in according to the load controller of the 5th embodiment;
Figure 11 is the sectional view that extracts along line XI-XI shown in Figure 10;
Figure 12 is the circuit diagram that illustrates according to the configuration of the load control system of sixth embodiment of the invention;
Figure 13 is the circuit diagram that illustrates according to the configuration of the load controller of first conventional example; And
Figure 14 is the circuit diagram that illustrates according to the configuration of the load controller of second conventional example.
Embodiment
(first embodiment)
Below, with the load controller of describing according to first embodiment of the invention.Fig. 1 is the circuit diagram that illustrates according to the configuration of the load controller 1A of first embodiment of the invention, and Fig. 2 is the sequential chart of signal waveform that the various parts of load controller 1A are shown.
The load controller 1A of first embodiment shown in Fig. 1 is connected in series between AC power source 2 and the load 3 and comprises the main cut-off/close unit 11 of the power supply that is used to control to load 3, rectifier 12, the control circuit 13 that is used for whole control load controller 1A, be used for first power source 14 to control circuit 13 supply firm powers, be used for when stopping second power source 15 to first power source, 14 supply power to the supply of the power of load 3, be used for to load 3 supply power the time, supplying the 3rd power source 16 of power to first power source 14, be used for to the auxiliary cut-off/close unit 17 of load conduction Weak current, or the like.The 3rd power source 16 also is provided with voltage-level detector 18, inputs to the voltage of the 3rd power source 16 in order to detection.Main cut-off/close unit 11 has the on-off element 11a of transistor arrangement and the on-off element 17a that auxiliary cut-off/close unit 17 has thyristor structure.
Even not under the cut-off state of the load controller 1A of load 3 supply power, because electric current flow into second power source 15 from power source 2 via rectifier 12, the Weak current load 3 of flowing through.Yet this electric current is suppressed to and can not causes the low-level of load faulty and make the impedance of second power source 15 remain on high value.
To load 3 supply power the time, make the impedance step-down of the 3rd power source 16 and electric current is flowed at the circuit that is arranged in load controller 1A, buffer condenser 29 begins charging.As mentioned above, voltage-level detector (charge observation unit) 18 is arranged in the 3rd power source 16 voltage that inputs to it with detection.When voltage-level detector 18 detects the voltage that inputs to the 3rd power source 16 and reaches predetermined threshold, voltage-level detector 18 output preset detection signals.
When voltage-level detector 18 receives detection signal, control circuit 13 makes main cut-off/close unit 11 can lead (closure state) in first period.Fig. 1 shows the exemplary configuration that the first pulse output unit 19 is set to the part of control circuit 13, and this first pulse output unit 19 is configured with based on directly exporting first pulse signal from the detection signal of voltage-level detector 18 by the hardware that uses application-specific integrated circuit etc.Alternatively, the configuration shown in being not limited to can be configured so that will input to from the output of voltage-level detector 18 such as the main control unit 20 of CPU etc. and by software and export first pulse signal.Preferably, first period that main cut-off/close unit 11 can be led is set to be shorter than a little the period of the semiperiod of commercial frequency power source.
Next, after first period passed, when main cut-off/close unit 11 became non-leading (off-state), control circuit 13 made auxiliary cut-off/close unit 17 (for example hundreds of microsecond) in second period can lead (closure state).This operation can realize by making auxiliary cut-off/close unit 17 can not lead (off-state) a little later than main cut-off/close unit 11.Fig. 1 shows the example of the second pulse output unit 21 of a part that is set to control circuit 13, and the described second pulse output unit 21 is exported second pulse signal and become non-leading (off-state) and become and can lead in second period afterwards so that auxiliary cut-off/close unit 17 is detecting main cut-off/close unit 11 in second period.Preferably, the maximal value of first period and the second period sum is set to be shorter than slightly the semiperiod.
Alternatively, can be from main control unit 20 to the pulse signal of auxiliary cut-off/close unit 17 output specific outputs to long second period of first pulse signal of main cut-off/close unit 11.Substitute as another, can adopt the delay circuit that uses diode or capacitor.
With reference to Fig. 2, after the charging of buffer condenser 29 is finished, carry out aforesaid operations, so that in most of times of semiperiod of commercial power source from main cut-off/close unit 11 after load 3 supply power, when the conductivity electric current reduces, supply power to load 3 from auxiliary cut-off/close unit 17.Because auxiliary cut-off/close unit 17 has the on-off element 17a of thyristor structure, auxiliary cut-off/close unit 17 becomes non-leading (off-state) when current value is 0 (zero cross point).When auxiliary cut-off/close unit 17 became non-leading (off-state), electric current flowed into the 3rd power source 16 once more and repeats aforesaid operations in each semiperiod of commercial power source.
Carry out such operation based on load current.Therefore,, also may realize being suitable for the two two linear load controllers of fluorescent light and incandescent lamp bulb even dispose main cut-off/close unit 11 by the on-off element 11a that adopts transistor arrangement, and the load 3 that is not limited to have power factor 1.It is that to be illustrated in power factor be not 1 o'clock waveform for 1 o'clock waveform and Fig. 3 B that Fig. 3 A is illustrated in power factor.
(second embodiment)
Next, with the load controller of describing according to second embodiment of the invention.Fig. 4 is the circuit diagram that illustrates according to the configuration of the load controller 1B of second embodiment of the invention.Fig. 4 and Fig. 1 are compared, the load controller 1B of second embodiment has the configuration identical with the load controller 1A of first embodiment, flows through the current detector 22 of electric current of auxiliary cut-off/close unit 17 except the load controller 1B of second embodiment also comprises in order to detection.
As described in second conventional example of Figure 14, auxiliary cut-off/close unit is intended to detect the zero cross point of electric current basically, does not carry out the conductivity of essence, and therefore expectation should auxiliary cut-off/close unit by undersized on-off element configuration.Yet, if the frequency drift of commercial power source or change, perhaps require load controller under 50Hz and 60Hz, to operate, the period of zero cross point that then reaches electric current after making non-the leading in main cut-off/close unit is elongated, causes auxiliary cut-off/close unit to become at load current and just can lead before enough little.In addition, if connect overload as load, even when then the conductivity time in main cut-off/close unit is identical, the conductivity loss also can increase.Therefore, the possibility that has the on-off element damage of auxiliary cut-off/close unit.
Therefore, in current second embodiment, current detector 22 detects the electric current of the auxiliary cut-off/close unit 17 of flowing through, if and the electric current of this cut-off/close unit 17 of flowing through surpasses the threshold value that can be accepted by this auxiliary cut-off/close unit 17, then current detector 22 via or door 80 send Continuity signal to main cut-off/close unit 11 can lead so that winner cut-off/close unit 11 becomes at short notice once more.Afterwards, when becoming non-leading in main cut-off/close unit 11 (for example sending pick-off signal by current detector 22 after passing in the short time realizes), auxiliary cut-off/close unit 17 becomes once more and can lead.
By the first pulse output unit 19 via or door 80 when on-off element 11a sends pick-off signal, alternately repeat conducting master cut-off/close unit 11 and auxiliary cut-off/close unit 17 in this manner, the on-off element that can prevent auxiliary cut-off/close unit 17 damages and has improved response to various types of commercial power sources and overload.Fig. 5 is illustrated in according to the waveform in the operation of the load controller 1B of second embodiment.
(the 3rd embodiment)
Next, with the load controller of describing according to third embodiment of the invention.Fig. 6 is the circuit diagram that illustrates according to the configuration of the load controller 1C of third embodiment of the invention.Fig. 6 and Fig. 4 are compared, the load controller 1C of the 3rd embodiment has the configuration identical with the load controller 1B of second embodiment, except the load controller 1C of the 3rd embodiment also is included in the frequency detection circuit 23 of load controller 1C frequency of detection power source (commercial power source) 2 when being in not cut-off state to load 3 supply power, and after finishing frequency detecting, frequency detection circuit 23 is irrelevant with main control unit 20.For example, in case finish frequency detecting, the switch 82 of main control unit 20 ends, thus the operation of stop frequency testing circuit 23.
Specifically, based on the frequency information that is obtained by frequency detection circuit 23, main control unit 20 is adjusted in that master's cut-off/close unit 11 becomes the period (first period) that can lead when load 3 supply power.This makes the conductivity time of winner cut-off/close unit 11 depend on that the frequency (50Hz or 60Hz) of commercial power source optimizes.Thereby, mainly proceed to the conductivity of load 3 and except main cut-off/close unit 11, under the situation that does not increase capacitance loss, can realize that the size of load controller 1C reduces by main cut-off/close unit 11 with big conductivity ability.Particularly, the change frequency (50Hz or 60Hz) for commercial power source can adopt single load controller.
When beginning before the power input or after power failure, recovering power, carry out the frequency detecting of frequency detection circuit 23 and main control unit 20 temporarily; And afterwards, by removing frequency detection circuit 23, promptly frequency of utilization testing circuit 23 not prevents that the power consumption among the load controller 1C from increasing.This is even more important for the two linear load controllers that require low power consumption.For example, the mistiming between the sequential when sequential by being provided for detecting frequency and electric current are consumed by other function element such as light-emitting diode display, can avoid because the load faulty that the power consumption of two linear load controllers causes.
(the 4th embodiment)
Next, with the load controller of describing according to fourth embodiment of the invention.Fig. 7 is the circuit diagram that illustrates according to the configuration of the load controller 1D of fourth embodiment of the invention.Basically, the load controller 1D of the 4th embodiment has the identical configuration of load controller 1A-1C with first to the 3rd embodiment, the on-off element 11b of the main cut-off/close unit 11 in the load controller 1D of the 4th embodiment is made of horizontal (lateral) transistor can be bi-direction controlled, shown in Figure 8.Though Fig. 7 is according to the configuration of the load controller 1C of the 3rd embodiment shown in Figure 6, but be not limited to this, the load controller 1D of the 4th embodiment shown in Figure 7 can have the identical configuration of load controller 1B with the load controller 1A of first embodiment shown in Figure 1 or second embodiment shown in Figure 4.
Fig. 8 illustrates the common configuration of lateral transistor devices that can be bi-direction controlled.The such lateral transistor that is called as HEMT (High Electron Mobility Transistor) comprises two-dimensional electron gas (gas) layer that is formed at AlGaN/GaN heterogeneous interface (hetero-interface), is used as channel layer; Be connected in series to the electrode D1 and the D2 of power source 2 and load 3 respectively; And high withstand voltage control electrode (grid) G that is used for when conductivity is ended, keeping electrode D1 and D2.For example, use Schottky (Schottky) electrode as control electrode G.
When making main cut-off/close unit 11 non-leading, apply low level signal from control circuit 13 to control electrode G, and control electrode G has lowest electric potential than main cut-off/close unit 11 and exceeds electromotive force with a corresponding amplitude of diode of rectifier 12.Here, enough be higher than the electromotive force of this diode, then can keep non-conductivity reliably if be used to determine when the threshold value of between the leading of main cut-off/close unit 11/non-leading, switching.Simultaneously, can lead, then carry out and first to the 3rd embodiment identical operations if main cut-off/close unit 11 becomes.Therefore, the control circuit 13 that is driven by the control signal with several volts can directly be controlled high-tension commercial power source.In addition, have the HEMT of high electron mobility, can realize two linear load controllers of small size and high power capacity by use.
(the 5th embodiment)
Next, with the load controller of describing according to fifth embodiment of the invention.Fig. 9 is the circuit diagram that illustrates according to the configuration of the load controller 1E of fifth embodiment of the invention.The load controller 1E of the 5th embodiment has load controller 1C and the substantially the same configuration of 1D with third and fourth embodiment, the on-off element 11c of main cut-off/close unit 11 is made of the lateral transistor of novelty that can be bi-direction controlled in the load controller 1E of the 5th embodiment.
Although Fig. 9 is according to the configuration of the load controller 1D of the configuration of the load controller 1C of the 3rd embodiment shown in Figure 6 or the 4th embodiment shown in Figure 7, but be not limited to this, the load controller 1E of the 5th embodiment shown in Figure 9 can have the identical configuration of load controller 1B with the load controller 1A of first embodiment shown in Figure 1 or second embodiment shown in Figure 4.
Figure 10 is the planimetric map that the configuration of on-off element 11c is shown, and Figure 11 is the sectional view that the line XI-XI in Figure 10 extracts.As shown in figure 11, the substrate 120 of on-off element 11c comprises conductor layer 120a, and is formed on GaN layer 120b and ALGaN layer 120c on the conductor layer 120a successively.In on-off element 11c, will be formed at the two-dimensional electron gas layer of AlGaN/GaN heterogeneous interface as channel layer.As shown in figure 10, be formed on the surperficial 120d of substrate 120 is the first electrode D1 and the second electrode D2 that is connected in series to power source 2 and load 3 respectively, and intermediate electric potential part S, this intermediate electric potential partly has the intermediate electric potential between the electromotive force of the electromotive force of the first electrode D1 and the second electrode D2.
In addition, control electrode (grid) G is formed on this intermediate electric potential part S.For example Schottky electrode is as control electrode G.The first electrode D1 and the second electrode D2 have first group of a plurality of electrode part 111,112,113 respectively ... and second group of a plurality of electrode part 121,122,123 ...Be arrangeding in parallel, the electrode part of each group faces with each other to be the broach shape in first and second groups, and is oppositely arranged first group and second group of electrode part.Intermediate electric potential part S and control electrode G are positioned at a plurality of electrode parts 111,112,113 that are set to the broach shape ... and 121,122,123 ... between and have a shape consistent (being roughly fish spine shape) with the flat shape that is formed on the space between the electrode.
Next, will the structure of the lateral transistor of on-off element 11c be described.As shown in figure 10, the center line that the electrode part 121 of the electrode part 111 of the first electrode D1 and the second electrode D2 is set on its Width overlaps each other, and with the appropriate section of intermediate electric potential part S and control electrode G the electrode part 111 of the first electrode D1 and the electrode part 121 of the second electrode D2 is set abreast.The distance of broad ways from the electrode part 121 of the electrode part 111 of the first electrode D1 and the second electrode D2 to the appropriate section of intermediate electric potential part S and control electrode G is set to can be with withstand voltage the maintaining the two of being scheduled to.
This is applicable to the direction vertical with Width too, i.e. the longitudinal direction of the electrode part 121 of the electrode part 111 of the first electrode D1 and the second electrode D2.In addition, these relations are equally applicable to the residue of electrode part to 112/122,113/123 ...That is, intermediate electric potential part S and control electrode G are arranged on and can keep predetermined withstand voltage position with respect to the first electrode D1 and the second electrode D2.
As mentioned above, will have the intermediate electric potential part S of the intermediate electric potential between the electromotive force of the first and second electrode D1 and D2 and being used for carries out control to middle electromotive force part S control electrode G is arranged on and can keeps predetermined withstand voltage position with respect to the first and second electrode D1 and D2.Therefore, if the first electrode D1 is in high potential and the second electrode D2 and is in low potential and bilateral switching element 11c by (promptly when 0 volt signal is applied to control electrode G), then be blocked (electric current that is positioned under control electrode (grid) G is blocked) at least at the electric current between the first electrode D1 and the control electrode G/ intermediate electric potential part S.
On the other hand, when bilateral switching element 11c conducting, promptly when the voltage signal that will exceed predetermined threshold is applied to control electrode G, as by as indicated in the arrow among Figure 10, electric current is along from the first electrode D1 (electrode part 111,112,113,) to the second electrode D2 (electrode part 121,122,123 ...) path flow through intermediate electric potential part S.This is applicable to opposite situation too.
As mentioned above, by being formed on, intermediate electric potential part S can keep predetermined withstand voltage position with respect to the first and second electrode D1 and D2, even when the threshold voltage of the signal that is applied to control electrode G reduces to the minimum requirements level, also can make on-off element 11c conduction and cut-off reliably and can realize low on-resistance.In addition, by using this novel on-off element 11c that the reference potential (GND) of control signal is set to equal the electromotive force of intermediate electric potential part S in structure main cut-off/close unit 11, the control circuit 13 that can be driven by the control signal with several volts is the commercial power sources of control high voltages directly.
In addition, compare with the 4th embodiment, the load controller 1E of the 5th embodiment is not subjected to the influence of pressure drop of the diode of rectifier 12.Therefore, be lowered, also can keep this non-conductivity reliably even realize the threshold voltage that switches between the conductivity of main cut-off/close unit 11 and the non-conductivity.And, be formed in the lateral transistor element of two-dimensional electron gas layer as channel layer of heterogeneous interface in use, make the non-threshold voltage of leading of element relevant with the conducting resistance of conductivity.Thereby, reducing threshold voltage and can cause conducting resistance to reduce, this makes it possible to realize that size reduces and the load controller 1E of high power capacity.
(the 6th embodiment)
Next, with the load control system of describing according to sixth embodiment of the invention.Figure 12 is the block scheme that illustrates according to the configuration of the load control system of sixth embodiment of the invention.The load control system 30 of the 6th embodiment comprises a plurality of load controller 1A and the overhead control unit 31 that is used for a plurality of load controller 1A of Long-distance Control.The quantity of the load controller 1A that is connected to overhead control unit 31 can suitably be set.
Can use wiring or wirelessly each load controller 1A is connected to overhead control unit 31.Each load controller 1A receives from overhead control unit 31 control signals transmitted and is operatively connected to the load 3 of load controller 1A based on this control signal.Overhead control unit 31 is to main control unit 20 transmission of control signals of each load controller 1A.Comprise one of them corresponding address signal with load controller 1A from overhead control unit 31 control signals transmitted.
Receive for its provide comprise the control signal of address signal the time, each load controller 1A to this control signal make the response and control load 3.Although Figure 12 illustrates the load controller 1A of first embodiment as the example that is connected to the load controller of overhead control unit 31, but be not limited to this, the load controller among this embodiment can be load controller 1B any one in the 1E of second to the 5th embodiment.And, these load controllers 1A can be connected to overhead control unit 31 to the appropriate combination of 1E.
As mentioned above, by comprise the control signal of the address signal that provides for each load controller 1A to corresponding load controller 1A transmission from overhead control unit 31, can be operatively connected to its load individually.Specifically, for the load control system of commercialization, by using electronically controlled load controller 1A, can be separately or integrally control a plurality of loads 3.
Although illustrate and described the present invention at described embodiment, will be understood by those skilled in the art that, under the situation that does not depart from the scope of the present invention that is defined by the following claims, can make various changes and modification.
Claims (6)
1. load controller comprises:
Main cut-off/close unit, the power supply that it has the on-off element of transistor arrangement and controls to load;
Auxiliary cut-off/close unit, the power supply that it has the on-off element of thyristor structure and control to described load when non-the leading in described main cut-off/close unit;
Control circuit, it controls the cut-off/close of described main cut-off/close unit and described auxiliary cut-off/close unit;
First power source, it supplies firm power via rectifier from the two ends received power of described main cut-off/close unit and to described control circuit;
Second power source, its via described rectifier from the two ends received power of described main cut-off/close unit and not to described load supply power the time to described first power source supply power;
The 3rd power source, it is supplying power to described first power source when power is supplied in described load under the state of described main cut-off/close unit or described auxiliary cut-off/close unit closure; And
Voltage-level detector, its detection inputs to the voltage of described the 3rd power source,
Wherein, when described voltage-level detector detects the described voltage that inputs to described the 3rd power source and reaches voltage threshold, described control circuit can be led described main cut-off/close unit in first period, and when becoming non-leading in described main cut-off/close unit, described control circuit can be led described auxiliary cut-off/close unit in second period.
2. load controller as claimed in claim 1 also comprises current detector, the flow through electric current of described auxiliary cut-off/close unit of its detection,
Wherein, when the electric current that exceeds current threshold is flowed through described auxiliary cut-off/close unit, described control circuit can be led described main cut-off/close unit, and when becoming non-leading in described main cut-off/close unit afterwards, described control circuit can be led described auxiliary cut-off/close unit.
3. load controller as claimed in claim 1 or 2 also comprises frequency detection circuit, and it is in the frequency that detected the described power of waiting to be supplied to described load before described load supply power,
Wherein, after this detection of frequency, remove described frequency detection circuit from the circuit that is used for load control, and when described power is supplied in described load, described control circuit is regulated described first period that described main cut-off/close unit can be led within it based on the power-frequency that is detected.
4. as each described load controller in the claim 1 to 3, wherein, the described on-off element of described main cut-off/close unit is by can bi-direction controlled lateral transistor devices constituting, and described lateral transistor devices comprises two electrodes that are connected respectively to power source and load and the control electrode that is arranged on the center section of described two electrodes.
5. as each described load controller in the claim 1 to 3, wherein, the described on-off element of described main cut-off/close unit has lateral transistor structure, and described lateral transistor structure comprises:
First electrode and second electrode, it is connected in series to AC power source and load respectively and is formed on the substrate surface;
The intermediate electric potential part has the intermediate electric potential between the electromotive force of the electromotive force of described first electrode and described second electrode, and at least a portion of described intermediate electric potential part is formed on the described substrate surface; And
Control electrode, it carries out the control for described intermediate electric potential part, and at least a portion of described control electrode is connected the top of described intermediate electric potential part,
Wherein, described intermediate electric potential part and described control electrode are arranged on and can keep predetermined withstand voltage position with respect to described first electrode and described second electrode.
6. load control system comprises:
As each described a plurality of load controllers in the claim 1 to 5; And
The overhead control unit, its control signal that will comprise the address signal that provides for each described load controller is transferred to corresponding load controller.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008213242 | 2008-08-21 | ||
| JP213242/2008 | 2008-08-21 | ||
| JP015476/2009 | 2009-01-27 | ||
| JP2009015476A JP5294903B2 (en) | 2008-08-21 | 2009-01-27 | Load control device and load control system including the same |
| PCT/IB2009/006573 WO2010020855A1 (en) | 2008-08-21 | 2009-08-18 | Load controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102171623A true CN102171623A (en) | 2011-08-31 |
| CN102171623B CN102171623B (en) | 2013-11-27 |
Family
ID=41706893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801323214A Expired - Fee Related CN102171623B (en) | 2008-08-21 | 2009-08-18 | Load controller and load controlling system thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5294903B2 (en) |
| CN (1) | CN102171623B (en) |
| TW (1) | TWI412295B (en) |
| WO (1) | WO2010020855A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683631A (en) * | 2015-06-08 | 2018-02-09 | 松下知识产权经营株式会社 | Light modulating device |
| CN108243545A (en) * | 2016-12-27 | 2018-07-03 | 松下知识产权经营株式会社 | Load control device |
| CN114236203A (en) * | 2021-11-29 | 2022-03-25 | 国网北京市电力公司 | Load control system, load control method, storage medium, and electronic device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5457786B2 (en) * | 2009-10-19 | 2014-04-02 | パナソニック株式会社 | Load control device |
| JP2012004253A (en) * | 2010-06-15 | 2012-01-05 | Panasonic Corp | Bidirectional switch, two-wire ac switch, switching power circuit, and method for driving bidirectional switch |
| JP5645109B2 (en) * | 2010-07-27 | 2014-12-24 | パナソニックＩｐマネジメント株式会社 | Two-wire load control device |
| CN102739046B (en) * | 2012-06-29 | 2015-07-15 | 卢金树 | Auxiliary power supply circuit without electrolytic capacitor |
| JP6012453B2 (en) * | 2012-12-20 | 2016-10-25 | 株式会社日立製作所 | PWM converter device and elevator device |
| JP6195199B2 (en) * | 2014-04-03 | 2017-09-13 | パナソニックＩｐマネジメント株式会社 | Light control device |
| JP6195200B2 (en) * | 2014-04-03 | 2017-09-13 | パナソニックＩｐマネジメント株式会社 | Light control device |
| JP6555612B2 (en) * | 2015-07-03 | 2019-08-07 | パナソニックＩｐマネジメント株式会社 | Light control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065804U (en) * | 1990-05-02 | 1990-11-14 | 陈光裕 | Non-power consumption energy-saving time delay switch for filament lamp |
| CN1079282A (en) * | 1993-07-06 | 1993-12-08 | 陆镇平 | Energy-saving health fluorescent lamp |
| JP2005019333A (en) * | 2003-06-27 | 2005-01-20 | Matsushita Electric Works Ltd | Phase control device |
| JP2007174409A (en) * | 2005-12-22 | 2007-07-05 | Matsushita Electric Works Ltd | Two-wire electronic switch |
| JP2008097535A (en) * | 2006-10-16 | 2008-04-24 | Matsushita Electric Works Ltd | Two-wire switching device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725010A (en) * | 1980-07-23 | 1982-02-09 | Toshiba Electric Equip Corp | Load control device |
| US5006737A (en) * | 1989-04-24 | 1991-04-09 | Motorola Inc. | Transformerless semiconductor AC switch having internal biasing means |
-
2009
- 2009-01-27 JP JP2009015476A patent/JP5294903B2/en not_active Expired - Fee Related
- 2009-08-18 CN CN2009801323214A patent/CN102171623B/en not_active Expired - Fee Related
- 2009-08-18 WO PCT/IB2009/006573 patent/WO2010020855A1/en active Application Filing
- 2009-08-20 TW TW98128056A patent/TWI412295B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065804U (en) * | 1990-05-02 | 1990-11-14 | 陈光裕 | Non-power consumption energy-saving time delay switch for filament lamp |
| CN1079282A (en) * | 1993-07-06 | 1993-12-08 | 陆镇平 | Energy-saving health fluorescent lamp |
| JP2005019333A (en) * | 2003-06-27 | 2005-01-20 | Matsushita Electric Works Ltd | Phase control device |
| JP2007174409A (en) * | 2005-12-22 | 2007-07-05 | Matsushita Electric Works Ltd | Two-wire electronic switch |
| JP2008097535A (en) * | 2006-10-16 | 2008-04-24 | Matsushita Electric Works Ltd | Two-wire switching device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683631A (en) * | 2015-06-08 | 2018-02-09 | 松下知识产权经营株式会社 | Light modulating device |
| US10306732B2 (en) | 2015-06-08 | 2019-05-28 | Panasonic Intellectual Property Management Co., Ltd. | Dimmer |
| US10616975B2 (en) | 2015-06-08 | 2020-04-07 | Panasonic Intellectual Property Management Co., Ltd. | Dimmer |
| US10966302B2 (en) | 2015-06-08 | 2021-03-30 | Panasonic Intellectual Property Management Co., Ltd. | Dimmer |
| CN107683631B (en) * | 2015-06-08 | 2021-06-01 | 松下知识产权经营株式会社 | Light modulation device |
| CN113271699A (en) * | 2015-06-08 | 2021-08-17 | 松下知识产权经营株式会社 | Light modulation device |
| CN113271699B (en) * | 2015-06-08 | 2023-12-05 | 松下知识产权经营株式会社 | Light modulation device |
| CN108243545A (en) * | 2016-12-27 | 2018-07-03 | 松下知识产权经营株式会社 | Load control device |
| CN108243545B (en) * | 2016-12-27 | 2020-10-30 | 松下知识产权经营株式会社 | Load control device |
| CN114236203A (en) * | 2021-11-29 | 2022-03-25 | 国网北京市电力公司 | Load control system, load control method, storage medium, and electronic device |
| CN114236203B (en) * | 2021-11-29 | 2023-10-24 | 国网北京市电力公司 | Load control system, method, storage medium and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010020855A1 (en) | 2010-02-25 |
| JP2010075034A (en) | 2010-04-02 |
| TW201014460A (en) | 2010-04-01 |
| TWI412295B (en) | 2013-10-11 |
| JP5294903B2 (en) | 2013-09-18 |
| CN102171623B (en) | 2013-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102171623B (en) | Load controller and load controlling system thereof | |
| CN102378450B (en) | Led driver circuit and led lighting device using the same | |
| KR101524954B1 (en) | Load control device | |
| CA2765943A1 (en) | Alternating current/direct current two-way switch | |
| CN102292786B (en) | Load control device | |
| JP5457786B2 (en) | Load control device | |
| JP2012222357A (en) | Solid-state light-emitting device | |
| CN104066230A (en) | Power supply circuit and illumination apparatus | |
| EP3595414A1 (en) | Light-dimming device | |
| EP3319400B1 (en) | Dimming device | |
| CN108235507A (en) | Lamp device and luminaire | |
| CN108243545A (en) | Load control device | |
| CN105532074A (en) | Converter and method of operating a converter for supplying current to a light emitting means | |
| KR101467717B1 (en) | Load control device | |
| CN108243538A (en) | Load control device | |
| CN104054394B (en) | There is the light-emitting diode chain of multiple light-emitting diode | |
| CN104955214A (en) | Lighting circuit, device and system | |
| CN104470049A (en) | Power Supply Device, Luminaire, and Lighting System | |
| CN202206620U (en) | Light emitting diode driving circuit | |
| CN107112896B (en) | Nonisulated type power supply device | |
| CN103797700A (en) | Electric apparatus | |
| JP5129763B2 (en) | Load control device | |
| KR101166316B1 (en) | Load controller and load control system using same | |
| CN104955210A (en) | Power supply circuit and lighting device | |
| CN104955216A (en) | LED constant-current drive circuit employing boost constant-current drive unit and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO, LTD. Free format text: FORMER OWNER: MATSUSHITA ELECTRIC WORKS LTD. Effective date: 20120222 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120222 Address after: Osaka Japan Applicant after: Matsushita Electric Industrial Co.,Ltd. Address before: Osaka Japan Applicant before: Matsushita Electric Works, Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |