CN102171623B - Load controller and load controlling system thereof - Google Patents
Load controller and load controlling system thereof Download PDFInfo
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- CN102171623B CN102171623B CN2009801323214A CN200980132321A CN102171623B CN 102171623 B CN102171623 B CN 102171623B CN 2009801323214 A CN2009801323214 A CN 2009801323214A CN 200980132321 A CN200980132321 A CN 200980132321A CN 102171623 B CN102171623 B CN 102171623B
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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
- 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
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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 traditionally for adopting the load controller such as the light fixture of the non-contact switch element of TRIAC (triac) or thyristor (thyristor).For simple wiring, connect purpose, such load controller normally two line types and be connected in series between AC power source and load.Yet, in the load controller be connected in series in like this between AC power source and load, guarantee that himself circuit power becomes the major issue that will solve.
The load controller 50 of the first conventional example shown in Figure 13 is connected in series between AC power source 2 and load 3 and comprises main cut-off/close unit 51, rectifier 52, control circuit 53, for the first power source 54 to control circuit 53 supply firm powers, for when load 3 is not powered, supply the second power source 55 of power to the first power source 54, for when load 3 is powered, supply the 3rd power source 56 of power to the 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 consists of TRIAC.
Under cut-off (OFF) state of the load controller 50 that load 3 is not powered, will via rectifier 52, be fed to the second power source 55 from the voltage that AC power source 2 is applied to load controller 50.The second power source 55 is the constant voltage circuits that comprise resistor and Zener diode.Under cut-off state, the electric current of load 3 of flowing through is small electric currents, thereby the possibility that does not exist load 3 to break down, and the electric current consumed in control circuit 53 is set to the maintenance Weak current, and the impedance of the second power source 55 simultaneously is set to the maintenance high impedance.
On the other hand, under conducting (ON) state of the load controller 50 that load 3 is powered, by control signal conducting the 3rd power source 56 from 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 start buffer condenser 59 chargings.When the charging voltage increase of buffer condenser 59 becomes higher than predetermined threshold, be included in that Zener diode 56a in the 3rd power source 56 punctures (break down) and electric current starts 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 start 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 is 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 cut-off) and main cut-off/close unit 51.When main cut-off/close unit 51 becomes non-leading (off-state), electric current again from rectifier 52 via the 3rd power source 56, flow to the first power source 54 and load controller 50 executable operations to guarantee himself circuit power.That is, in every 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 the second conventional example shown in Figure 14 is connected in series between AC power source 2 and load 3 and comprises main cut-off/close unit 61, rectifier 62, control circuit 63, for the first power source 64 to control circuit 63 supply firm powers, for when load 3 is not powered, supply the second power source 65 of power to the first power source 64, for when load 3 is powered, supply the 3rd power source 66 of power to the 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 consists 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 becomes and can lead within the period according to the exterior lighting classification.Specifically, on-off element 61a became and can lead (closure state) in the moment that zero-crossing detector 67 detects the zero cross point of voltage, 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 the 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 every 1/2 cycle of exchange current.
In the situation that the on-off element of main cut-off/close unit 51 is as TRIAC or thyristor in the load controller 50 of the first conventional example, needs wave filter to be reduced in the noise generated when power is supplied in load 3 and avoid the fault caused due to the noise transmitted from power source 2 when stopping to load 3 supply power.Yet, due to the size that is included in the coil 58 in this wave filter and the heat that generated by coil 58, the size that is difficult to dwindle load controller.
For in the situation that do not use wave filter to reduce the noise produced due to load controller, for example disclosed load controller (the 3rd conventional example) comprises the on-off element (the first switch unit) of main cut-off/close unit and the second switch unit with conducting resistance larger than the conducting resistance of the first switch unit in patent documentation 1, wherein after the second switch unit conducting, makes the first switch unit conducting.Yet in the 3rd such conventional example, due to the complicacy of the quantity that has increased on-off element and Circnit Layout, it is complicated that the control of conducting sequential 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 the 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 electric current flows on the vertical direction of element vertical type.In the situation that TRIAC, because p-n junction is present in conducting path, can lose while during conductivity, overcoming this barrier.In transistorized situation, owing to requiring two elements to connect in opposite direction and higher as the resistance of the low carrier concentration layer of withstand voltage retaining layer, therefore when conductivity, lose.Because on-off element itself produces large heat dissipation, this requires large-sized heat sink conversely, therefore is difficult to realize large capacity and undersized load controller.Usually, such load controller is contained in can of being arranged on wall etc.Yet therefore, because traditional load controller is difficult to minification, be difficult to the combinations such as load controller and other sensor, switch are arranged in normally used box.Therefore, need the load controller that size is less in order to other sensor, switch etc., be used in combination this load controller in the box of general size.
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 size reduction and large capacity by the heat generated 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 the 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.
According to load controller of the present invention, also comprise via rectifier from the two ends received power of described main cut-off/close unit and to the first power source of described control circuit supply firm power, 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 the second power source of described the first power source supply power, and under the state of described main cut-off/close unit or described auxiliary cut-off/close unit closure during to described load supply power to the 3rd power source of described the first power source supply power.
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 within the first period, and described auxiliary cut-off/close unit can be led while in described main cut-off/close unit, becoming non-leading within the second period.
Utilize such configuration, because described control circuit detects when the described voltage that inputs to described the 3rd power source reaches predetermined threshold described main cut-off/close unit can be led within the first period at described voltage-level detector, and after described the first period passes, therefore described main cut-off/close unit makes described auxiliary cut-off/close unit can lead within the second period while becoming non-leading, the most of time internal power in the half period of business power source is supplied to load from described main cut-off/close unit.
Afterwards, at the conductivity electric current, become more hour, from described auxiliary cut-off/close unit to described load supply power.Based on described load current, carry out such operation.Therefore, even configure 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, owing to suppressing the noise rank that the operating period at load controller generates very low, therefore can realize having the small size payload controller that wide region is applicable 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 while in described main cut-off/close unit, becoming non-leading afterwards.
Utilize such configuration, while due to the electric current that the described auxiliary cut-off/close unit of flowing through detected at described current detector, exceeding the current value that can be accepted by described auxiliary cut-off/close unit, described main cut-off/close unit becomes at short notice and again can lead, and can prevent that therefore the on-off element of auxiliary cut-off/close unit from damaging.And, due to by with undersized on-off element, constructing auxiliary cut-off/close unit, therefore can reduce the size of load controller and improve the response to various business power sources and overload.
The load controller of first aspect present invention also is included in to the frequency detection circuit of the frequency that detects the power of waiting to be fed to described load before described load supply power, wherein, after this detection of frequency, from the circuit of controlling for load, remove described frequency detection circuit, and to the described power of described load supply the time, described control circuit regulates based on the power-frequency detected described the first period that described main cut-off/close unit can be led within it.
Utilize such configuration, can stop to described load supply power, such as in the time before starting power input or while after power failure, recovering power, utilize the frequency in described frequency detection circuit detection power source (business power source).Thereby, can mainly by the main cut-off/close unit with large conductivity ability, 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.
In addition, owing to after detecting described frequency, removing described frequency detection circuit from the circuit of controlling for load, can prevent that therefore the power consumption of the load controller caused due to frequency detection circuit from increasing.Specifically, the change frequency (50Hz or 60Hz) for the business 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 forming, 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, from described control circuit, apply low level signal to described control electrode G, and control electrode G has the electromotive force that exceeds the amplitude corresponding with a diode of described rectifier than the lowest electric potential of described main cut-off/close unit.Here, if the threshold value that determines when switching between the leading of described main cut-off/close unit/non-leading can maintain described non-conductivity reliably enough higher than the electromotive force of a described diode.Therefore, the control circuit driven by the control signal with several volts can directly be controlled high-tension business power source.In addition, can realize two linear load controllers of size reduction and 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 respectively AC power source and load and is formed on the first electrode and the second electrode on substrate surface, intermediate electric potential part with the intermediate electric potential between the electromotive force of the electromotive force of described the first electrode and described the second electrode, at least a portion of described intermediate electric potential part is formed on 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 to the top of described intermediate electric potential part, wherein said intermediate electric potential part and described control electrode are arranged on and can maintain predetermined withstand voltage position with respect to described the first electrode and described the second electrode.
Utilize such configuration, by forming described intermediate electric potential part can maintain predetermined withstand voltage position with respect to described the first electrode and described the 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 reliably described on-off element conduction and cut-off and can realize low conducting resistance.
In addition, by the reference potential by control signal (GND), be set to equal the electromotive force of described intermediate electric potential part, the control circuit 13 that can drive by the control signal by having several volts is directly controlled high voltage business power source.
In addition, described main cut-off/close unit is not subjected to the impact of pressure drop of the diode of described rectifier.Therefore, the threshold voltage switched between the conductivity of described main cut-off/close unit and non-conductivity even make reduces, and also can reliably maintain non-conductivity.And, in employing, be formed in the lateral transistor element of Two-dimensional electron gas-bearing formation as channel layer of heterogeneous interface, make the conducting resistance of the 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 the load controller of size reduction and 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 provided for load controller as described in each is transferred to the overhead control unit of corresponding load controller.
Utilize such configuration, the control signal of the address signal provided for each load controller can be operatively connected to individually the load of described load controller by from described overhead control unit, comprising to corresponding load controller transmission.Specifically, for commercial load control system, can be separately or integrally control a plurality of loads by using electronically controlled load controller.
The accompanying drawing explanation
By following description to the embodiment that provides by reference to the accompanying drawings, purpose of the present invention and feature will become obviously, in the accompanying drawings:
Fig. 1 is the circuit diagram illustrated according to the configuration of the load controller of first embodiment of the invention;
Fig. 2 is the sequential chart illustrated according to the signal waveform of the various parts of the load controller of the first embodiment;
Fig. 3 A and Fig. 3 B illustrate according to the waveform in the operation of the load controller of the first embodiment, and it is that to be illustrated in power factor be not the waveform of 1 o'clock for the waveform of 1 o'clock and Fig. 3 B that Fig. 3 A is illustrated in power factor;
Fig. 4 is the circuit diagram illustrated 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 the second embodiment;
Fig. 6 is the circuit diagram illustrated according to the configuration of the load controller of third embodiment of the invention;
Fig. 7 is the circuit diagram illustrated 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 be illustrated according to the load controller of the 4th embodiment;
Fig. 9 is the circuit diagram illustrated 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 be illustrated according to the load controller of the 5th embodiment;
Figure 11 is the sectional view extracted along line XI-XI shown in Figure 10;
Figure 12 is the circuit diagram illustrated according to the configuration of the load control system of sixth embodiment of the invention;
Figure 13 is the circuit diagram illustrated according to the configuration of the load controller of the first conventional example; And
Figure 14 is the circuit diagram illustrated according to the configuration of the load controller of the second conventional example.
Embodiment
(the first embodiment)
Below, by the load controller of describing according to first embodiment of the invention.Fig. 1 is the circuit diagram illustrated 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 the first embodiment shown in Fig. 1 is connected in series between AC power source 2 and load 3 and comprises the main cut-off/close unit 11 be used to the power supply that controls to load 3, rectifier 12, control circuit 13 for whole control load controller 1A, for the first power source 14 to control circuit 13 supply firm powers, for stopping supplying seasonable the second power source 15 to the first power source 14 supply power to the power of load 3, for to load 3 supply power the time, supply the 3rd power source 16 of power to the first power source 14, for the auxiliary cut-off/close unit 17 to load conduction Weak current, etc..The 3rd power source 16 also is provided with voltage-level detector 18, in order to detection, inputs to the voltage of the 3rd power source 16.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 the 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 the 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 starts charging.As mentioned above, voltage-level detector (charge observation unit) 18 is arranged in the 3rd power source 16 and with detection, inputs to its voltage.When voltage-level detector 18 detects the voltage that inputs to the 3rd power source 16 and reaches predetermined threshold, the predetermined detection signal of voltage-level detector 18 output.
When from voltage-level detector 18, receiving detection signal, control circuit 13 makes main cut-off/close unit 11 can lead (closure state) within the 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 the detection signal based on from voltage-level detector 18 and directly exports the first pulse signal 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 export the first pulse signal by software.Preferably, the 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 the 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) within the second period can lead (closure state).This operation can realize by making auxiliary cut-off/close unit 17 can not lead a little later (off-state) 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 described the second pulse output unit 21 is exported the second pulse signal and become non-leading (off-state) and become and can lead in the second period afterwards so that auxiliary cut-off/close unit 17 is detecting main cut-off/close unit 11 within the second period.Preferably, the maximal value of the first period and the second period sum is set to be slightly shorter than the semiperiod.
Alternatively, can export from main control unit 20 to auxiliary cut-off/close unit 17 pulse signal of specific outputs to long second period of the first pulse signal of main cut-off/close unit 11.As another, substitute, can adopt the delay circuit that uses diode or capacitor.
With reference to Fig. 2, after the charging of buffer condenser 29 completes, carry out aforesaid operations, so that in the most of time of semiperiod of business power source from main cut-off/close unit 11 to load after 3 supply power, during the conductivity current reduction, the 3 supply power from auxiliary cut-off/close unit 17 to load.The on-off element 17a that has thyristor structure due to auxiliary cut-off/close unit 17, 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 again flowed into the 3rd power source 16 and repeats aforesaid operations in each semiperiod of business power source.
Based on load current, carry out such operation.Therefore, even by adopting the on-off element 11a configuration main cut-off/close unit 11 of transistor arrangement, also may realize being suitable for the two two linear load controllers of fluorescent light and incandescent lamp bulb, and the load 3 that is not limited to have power factor 1.It is that to be illustrated in power factor be not the waveform of 1 o'clock for the waveform of 1 o'clock and Fig. 3 B that Fig. 3 A is illustrated in power factor.
(the second embodiment)
Next, by the load controller of describing according to second embodiment of the invention.Fig. 4 is the circuit diagram illustrated 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 the second embodiment has the configuration identical with the load controller 1A of the first embodiment, flows through the current detector 22 of electric current of auxiliary cut-off/close unit 17 except the load controller 1B of the second embodiment also comprises in order to detection.
As described in the 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 business power source or change, perhaps require load controller to operate under 50Hz and 60Hz, the period of zero cross point that reaches electric current after making non-the leading in main cut-off/close unit is elongated, causes auxiliary cut-off/close unit to become before enough little and just can lead at load current.In addition, if connect overload as load, even when the conductivity time in main cut-off/close unit is identical, the conductivity loss also can increase.Therefore, there is the possibility of the on-off element damage of auxiliary cut-off/close unit.
Therefore, in current the second embodiment, current detector 22 detects the electric current of the auxiliary cut-off/close unit 17 of flowing through, the electric current of this cut-off/close unit 17 surpasses the threshold value that can be accepted by this auxiliary cut-off/close unit 17 and if flow through, current detector 22 via or door 80 to main cut-off/close unit 11, send Continuity signal so that winner's cut-off/close unit 11 again becomes and can lead at short notice.Afterwards, for example, while in main cut-off/close unit 11, becoming non-leading (by current detector 22 after passing in the short time, sending pick-off signal realizes), auxiliary cut-off/close unit 17 again becomes and can lead.
By the first pulse output unit 19 via or door 80 alternately repeat in this manner conducting master cut-off/close unit 11 and auxiliary cut-off/close unit 17 when to on-off element 11a, sending pick-off signal, the on-off element that can prevent auxiliary cut-off/close unit 17 damages and has improved the response to various types of business power sources and overload.Fig. 5 is illustrated according to the waveform in the operation of the load controller 1B of the second embodiment.
(the 3rd embodiment)
Next, by the load controller of describing according to third embodiment of the invention.Fig. 6 is the circuit diagram illustrated 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 the second embodiment, when the load controller 1C of the 3rd embodiment also is included in load controller 1C and is in not the cut-off state to load 3 supply power the frequency detection circuit 23 of the frequency of detection power source (business power source) 2, and after completing frequency detecting, frequency detection circuit 23 is irrelevant with main control unit 20.For example,, in case complete frequency detecting, switch 82 cut-offs of main control unit 20, thereby the operation of stop frequency testing circuit 23.
Specifically, based on the frequency information obtained by frequency detection circuit 23, when main control unit 20 was adjusted in to load 3 supply power, master's cut-off/close unit 11 became the period (the first period) that can lead.This makes the conductivity time of winner's cut-off/close unit 11 depend on that the frequency (50Hz or 60Hz) of business power source optimizes.Thereby, mainly by the main cut-off/close unit 11 with large conductivity ability, proceed to the conductivity of load 3 and, except main cut-off/close unit 11, in the situation that do not increase capacitance loss, can realize the size reduction of load controller 1C.Particularly, the change frequency (50Hz or 60Hz) for the business power source, can adopt single load controller.
Before starting power input or while 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, namely frequency of utilization testing circuit 23 not, prevent that the power consumption in 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 the when sequential by being provided for detecting frequency and electric current are consumed by other function element such as light-emitting diode display, the load faulty that can avoid the power consumption due to two linear load controllers to cause.
(the 4th embodiment)
Next, by the load controller of describing according to fourth embodiment of the invention.Fig. 7 is the circuit diagram illustrated 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 configuration identical with the load controller 1A-1C of the 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 consists of can be bi-direction controlled, horizontal (lateral) transistor shown in Figure 8.Although 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 configuration identical with the load controller 1B of the load controller 1A of the first embodiment shown in Figure 1 or the 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 respectively electrode D1 and the D2 of power source 2 and load 3; And for withstand voltage control electrode (grid) G of the height that maintains electrode D1 and D2 when conductivity is ended.For example, use Schottky (Schottky) electrode as control electrode G.
When making main cut-off/close unit 11 non-leading, from control circuit 13, apply low level signal to control electrode G, and control electrode G has the electromotive force that exceeds the amplitude corresponding with a diode of rectifier 12 than the lowest electric potential of main cut-off/close unit 11.Here, if be used to the threshold value that determines when switching between the leading of main cut-off/close unit 11/non-leading enough higher than the electromotive force of this diode, can maintain reliably non-conductivity.Simultaneously, if main cut-off/close unit 11 becomes can lead, carry out the operation identical with the first to the 3rd embodiment.Therefore, the control circuit 13 driven by the control signal with several volts can directly be controlled high-tension business power source.In addition, by use, have the HEMT of high electron mobility, can realize two linear load controllers of small size and high power capacity.
(the 5th embodiment)
Next, by the load controller of describing according to fifth embodiment of the invention.Fig. 9 is the circuit diagram illustrated according to the configuration of the load controller 1E of fifth embodiment of the invention.The load controller 1E of the 5th embodiment has the configuration substantially the same with the load controller 1C of the third and fourth embodiment and 1D, the on-off element 11c of main cut-off/close unit 11 consists 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 configuration identical with the load controller 1B of the load controller 1A of the first embodiment shown in Figure 1 or the 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 extracted along the line XI-XI in Figure 10.As shown in figure 11, the substrate 120 of on-off element 11c comprises conductor layer 120a, and is formed on successively GaN layer 120b and ALGaN layer 120c on conductor layer 120a.In on-off element 11c, will be formed at the Two-dimensional electron gas-bearing formation 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 respectively power source 2 and load 3, 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 respectively first group of a plurality of electrode part 111,112,113 ... and second group of a plurality of electrode part 121,122,123 ...The electrode part of each group in first and second groups that be arranged in parallel faces with each other to be comb teeth-shaped, 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 comb teeth-shaped ... and 121,122,123 ... between and have a shape consistent with the flat shape that is formed on the space between electrode (being roughly fish spine shape).
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 by 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 maintain 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 be arranged on and can maintain predetermined withstand voltage position with respect to the first and second electrode D1 and D2 for middle electromotive force part S being carried out to the control electrode G controlled.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 cut-off (namely when 0 volt signal is applied to control electrode G), at the electric current between the first electrode D1 and control electrode G/ intermediate electric potential part S, be blocked at least (electric current be positioned under control electrode (grid) G is blocked).
On the other hand, when bilateral switching element 11c conducting, namely when the voltage signal that will exceed predetermined threshold is applied to control electrode G, as as indicated in the arrow in 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 maintain 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 reliably on-off element 11c conduction and cut-off and can realize low on-resistance.In addition, by in structure main cut-off/close unit 11, using this novel on-off element 11c the reference potential of control signal (GND) to be set to equal the electromotive force of intermediate electric potential part S, can directly control high voltage business power source by the control circuit 13 that the control signal with several volts drives.
In addition, compare with the 4th embodiment, the load controller 1E of the 5th embodiment is not subjected to the impact of pressure drop of the diode of rectifier 12.Therefore, even realize that the threshold voltage switched between the conductivity of main cut-off/close unit 11 and non-conductivity is lowered, and also can maintain this non-conductivity reliably.And, in use, be formed in the lateral transistor element of Two-dimensional electron gas-bearing formation as channel layer of heterogeneous interface, 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 the load controller 1E of size reduction and high power capacity.
(the 6th embodiment)
Next, by the load control system of describing according to sixth embodiment of the invention.Figure 12 is the block scheme illustrated 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 for the overhead control unit 31 of 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 the control signal of 31 transmission from the overhead control unit and based on this control signal, is operatively connected to the load 3 of load controller 1A.Overhead control unit 31 is to main control unit 20 transmission of control signals of each load controller 1A.The control signals of 31 transmission comprise one of them the corresponding address signal with load controller 1A from the overhead control unit.
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 example of the load controller 1A of the first embodiment as the load controller that is connected to overhead control unit 31, but be not limited to this, the load controller in this embodiment can be that the load controller 1B of the second to the 5th embodiment is to any one in 1E.And, these load controllers 1A can be connected to overhead control unit 31 to the appropriate combination of 1E.
As mentioned above, by from overhead control unit 31, comprising to corresponding load controller 1A transmission, the control signal of the address signal provided for each load controller 1A can be operatively connected to individually its load.Specifically, for commercial load control system, by using electronically controlled load controller 1A, can be separately or integrally control a plurality of loads 3.
Although for described embodiment, illustrate and described the present invention, will be understood by those skilled in the art that, the scope of the present invention be defined by the following claims in the situation that do not depart from can be made 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;
The 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;
The second power source, it supplies power from the two ends received power of described main cut-off/close unit and not to described load supply power the time to described the first power source via described rectifier;
The 3rd power source, it supplies power to described the first power source to described load supply power the time 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 load is powered, 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 within the first period, and while in described main cut-off/close unit, becoming non-leading, described control circuit can be led described auxiliary cut-off/close unit within the second period.
2. load controller as claimed in claim 1, also comprise 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 within the 3rd period, and while in described main cut-off/close unit, becoming non-leading afterwards, described control circuit can be led described auxiliary cut-off/close unit.
3. load controller as claimed in claim 1 or 2, also comprise 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, from the circuit of controlling for load, remove described frequency detection circuit, and to the described power of described load supply the time, described control circuit, based on the power-frequency detected, is regulated described the first period that described main cut-off/close unit can be led within it.
4. load controller as claimed in claim 1 or 2, wherein, the described on-off element of described main cut-off/close unit is by can bi-direction controlled lateral transistor devices forming, and described lateral transistor devices comprises two electrodes that are connected respectively to AC power source and load and the control electrode that is arranged on the center section of described two electrodes.
5. load controller as claimed in claim 1 or 2, wherein, the described on-off element of described main cut-off/close unit has lateral transistor structure, and described lateral transistor structure comprises:
The first electrode and the second electrode, it is connected in series to respectively AC power source and load and is formed on substrate surface;
The intermediate electric potential part, have the intermediate electric potential between the electromotive force of the electromotive force of described the first electrode and described the second electrode, and at least a portion of described intermediate electric potential part is formed on 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 to the top of described intermediate electric potential part,
Wherein, described intermediate electric potential part and described control electrode are arranged on and can maintain predetermined withstand voltage position with respect to described the first electrode and described the second electrode.
6. load control system comprises:
A plurality of load controllers as claimed in claim 1 or 2; And
The overhead control unit, its control signal that will comprise the address signal provided for each described load controller is transferred to corresponding load controller.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213242/2008 | 2008-08-21 | ||
| JP2008213242 | 2008-08-21 | ||
| JP2009015476A JP5294903B2 (en) | 2008-08-21 | 2009-01-27 | Load control device and load control system including the same |
| JP015476/2009 | 2009-01-27 | ||
| PCT/IB2009/006573 WO2010020855A1 (en) | 2008-08-21 | 2009-08-18 | Load controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102171623A CN102171623A (en) | 2011-08-31 |
| CN102171623B true 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) |
Families Citing this family (11)
| 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 |
| KR102075896B1 (en) * | 2015-06-08 | 2020-02-11 | 파나소닉 아이피 매니지먼트 가부시키가이샤 | Dimmer |
| 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 |
| JP6830205B2 (en) * | 2016-12-27 | 2021-02-17 | パナソニックＩｐマネジメント株式会社 | Load control 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 |
Citations (2)
| 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 |
Family Cites Families (5)
| 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 |
| JP4013846B2 (en) * | 2003-06-27 | 2007-11-28 | 松下電工株式会社 | Phase control device |
| JP4552847B2 (en) * | 2005-12-22 | 2010-09-29 | パナソニック電工株式会社 | 2-wire electronic switch |
| JP4748024B2 (en) * | 2006-10-16 | 2011-08-17 | パナソニック電工株式会社 | 2-wire switch device |
-
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 (2)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI412295B (en) | 2013-10-11 |
| WO2010020855A1 (en) | 2010-02-25 |
| TW201014460A (en) | 2010-04-01 |
| JP5294903B2 (en) | 2013-09-18 |
| CN102171623A (en) | 2011-08-31 |
| JP2010075034A (en) | 2010-04-02 |
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