CN101800425A - Environment adjustment system - Google Patents
Environment adjustment system Download PDFInfo
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- CN101800425A CN101800425A CN201010116973A CN201010116973A CN101800425A CN 101800425 A CN101800425 A CN 101800425A CN 201010116973 A CN201010116973 A CN 201010116973A CN 201010116973 A CN201010116973 A CN 201010116973A CN 101800425 A CN101800425 A CN 101800425A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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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
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
Abstract
The present invention relates to environment adjustment system.A kind of control appliance that is used for environment adjustment system comprises: the relay and first semiconductor switch in series arranged between AC power supplies and load; And, control device, it comprises the control electronic unit.Described control device comprises a plurality of electrolytic capacitors of arranging with being connected in parallel to each other, described capacitor is arranged and comes stored energy when to control device supply grid power, and is arranged when to load power supply electric power and supplies described energy to the control electronic unit.Described control electronic unit can for example be arranged the short circuit that detects one or more capacitors, and can comprise the relay control, if described relay control is arranged under the situation of the short circuit that detects one or more capacitors, operational relay is to turn-off the electric power to load.
Description
Technical field
The present invention relates to environment adjustment system, promptly in building, be provided to regulate the field of system of the internal environment of building; Such system can comprise for example lamp, fan, humidifier (dehumidifier) and other air-conditioning equipments.On concrete, the equipment of the regulating system that the present invention relates to be used to control environment.On concrete, but not uniquely, the present invention relates to be used for being controlled at the equipment of two-wire AC power supply facilities installation environment regulating system.
Background technology
Two-wire AC power supplies facility is (mains-powered) electronic equipment that does not have the mains supply of center line connection.Usually, only be implemented in the control of installation environment regulating system in the two-wire system by the switch that between terminal of AC electrical network (mains) and described equipment, is electrically connected in series.
But, when expecting more complicated control, go wrong.For example, expectation is to the remote control of environment control device, but remote control receiving station needs electric power to come work.In three-wire system, can obtain the electric power that is used to control from facility three-way, if but obtaining electric power from the line two-wire system, then described electric power is lost to the environment regulating load.A kind of possibility is to control system special-purpose additional supply line to be installed, but does not expect so, because be destructive in the installation of the ew line of building.Another kind of possibility is from the needed electric power of battery supplied, but this is comparatively expensive scheme, and change battery continually can be for user's inconvenience.
Acquisition is used for being called as " stealing " in a kind of any means known of the electric power of two-wire system control appliance.In this layout, use switch promptly to switch load current by energy storing device, described electric current at least in part by from load bridging (divert) to control appliance.In the example prior art systems, use semiconductor switch (for example field-effect transistor (FET), metal oxide FET (MOSFET) or TRIAC (triac)) come each cycle of AC power supplies at least once (promptly for the 50Hz power supply per 20 milliseconds at least once) electric current is switched to control circuit from load.For comparing the short duration with the duration in electrical network cycle (mains cycle), shunt current still can be used to be provided for controlling the enough electric power of electronic unit for the performance generation impalpable influence more or less of load by that way.Can for example power to capacitor and realize this point, after electric network source (mains supply) being switched the load of readjustment joint, use from the discharge of described capacitor to come then to the power supply of control electronic unit by the load current that uses shunting.
Can in WO2008/103491, find the example of " stealing " layout of prior art, WO2008/103491 has described load control device, described load control device is connected with AC voltage source and electronic load by adaptive, and can be used for providing the basic all voltage that is provided by the AC voltage source to load.Load control device comprises controlled electric installation, controller, zero-crossing detector and is used to produce the power supply that is essentially dc voltage that is used for to the controller power supply.Described power supply can be used for every half period is charged to energy storing device (being the capacitor of 680 microfarads) scheduled volume in the example of a description energy.Described controller can be used for determining when stop from zero-crossing detector charging at every half period power supply, and make immediately the controllable conductivity device become conduction with the conducting full-load current.When every half period began conducting, only Zui Xiao voltage was considered to develop by power supply to allow the energy storing device charging at the controllable conductivity device.
Need the capacitor of big value to come to the control electronic unit power supply of regulating at environment in the facility.But---using in the facility switching circuit---if electrolytic capacitor must be according to the predetermined safe standard by classification.For example, BS EN 60669-2-1:2004, Clause 102.2:Capacitors shows that the short circuit that will cause the capacitor of the 0.5A of the terminal by capacitor or bigger electric current must meet IEC 60384-14, and meet form 107, described form 107 shows then, if capacitor is connected between live line (live) and the center line (neutral) or between the live line of live line and switching, and if capacitor do not connect with impedance, then capacitor must be the X classification.Defined the X safety classification of capacitor in IEC 60384-14: the capacitor of X classification is the capacitor of special manufacturing, and their tested high pressure classifications have guaranteed the height reliability under the condition of extremely transient state on the line.
Therefore, EN60669 requires X safety classification in the following cases: be connected across in circuit input and the circuit output if capacitor is arranged, and needed electric capacity is about hundreds of microfarad.But, very big with the capacitor volume of the X classification of microfarad classification, make it be not suitable for many environment and regulate and use (wherein, often expecting that control unit is as far as possible little).And under the situation that semiconductor switch fails to disconnect, load current can flow through capacitor, the voltage at capacitor two ends is brought up to the high level of danger in several milliseconds.
The present invention seeks to alleviate the problems referred to above.
Summary of the invention
The invention provides the control appliance that is used for environment adjustment system, comprising: the first terminal is used to be connected to the AC electric network source; Second terminal is used to be connected to the environment regulating load; Relay is disposed between described the first terminal and described second terminal; First semiconductor switch is disposed between described the first terminal and described second terminal; And, the control electronic unit;
Wherein, described control appliance also comprises a plurality of electrolytic capacitors, and described a plurality of electrolytic capacitors are arranged with being connected in parallel to each other; And
Wherein, described relay is used to connect and cut off the electric current from described AC electric network source to described load, and when described relay was provided to described load supply of current, described first semiconductor switch was used to shunt at least one part of current by described a plurality of capacitors; And
Wherein, described capacitor is arranged the energy of storing from described electric network source when the described electric current of shunting, and the energy of being stored to the supply of described control electronic unit when not shunting described electric current,
Even also being arranged, described capacitor makes that another continuation at least of described capacitor provides the energy of being stored to described control electronic unit under the situation of at least one fault of described capacitor.
Therefore, providing of a plurality of capacitors mean, under the situation of at least one fault of described a plurality of capacitors, described control electronic unit is still powered by (at least one of residual electricity container); Preferably, described control electronic unit still can turn-off the power supply to described load, therefore, prevents the bust of described equipment.Described control electronic unit can for example be arranged the one or more short circuit that detects described capacitor, and can comprise the relay control, operate described relay under the situation of the one or more short circuit that detects described capacitor, to turn-off the electric current of described load if described relay control is arranged.
Described capacitor can be arranged to electronics or layout, even so that under the situation of at least one fault of described capacitor described capacitor another continues the energy stored to the supply of described control electronic unit at least.
Can be following situation, described first semiconductor switch can be used for splitter section or whole electric current passes through described a plurality of capacitors.Can be following situation,, then not shunt or shunt current not basically from described load in case described capacitor is recharged or charging fully.
Described first semiconductor switch can for example be FET (for example MOSFET) or TRIAC.
Described first semiconductor switch can be arranged to described relay and connect.Described first semiconductor switch and described relay are connected that live line is gone into (live in) and live line goes out between (live out).
Current sensor can be hardware unit or circuit, and perhaps it can be the algorithm of realizing in microcontroller.
Described control electronic unit can also comprise: voltage sensor, described voltage sensor are arranged the voltage at the described capacitor of sensing two ends; And second semiconductor switch is if it is arranged described first semiconductor switch of short circuit under the situation that the voltage that comes at described capacitor two ends surpasses predetermined bypass threshold (preferably and capacitor).Described second semiconductor switch can for example be FET (for example MOSFET) or TRIAC.Described control device can also comprise microprocessor, microcontroller or other suitable hardware, it is arranged the data of the voltage that receives indication institute sensing, if and surpass under the situation of described predetermined bypass threshold at the voltage at described capacitor two ends, produce and be used to operate the signal of described second semiconductor switch with described first semiconductor switch of short circuit.Described control electronic unit can be arranged and turn-off described relay when the voltage at described capacitor two ends surpasses predetermined threshold.
Described environment regulating load can comprise luminous load.Described environment regulating load can comprise heating load.Described environment regulating load can comprise the air-conditioning load.
Described electrolytic capacitor can each have the electric capacity that surpasses 100 microfarads.Described electrolytic capacitor can each have the electric capacity that surpasses 200 microfarads.Described electrolytic capacitor can have the electric capacity less than 600 microfarads, preferably less than 500 microfarads, more preferably less than 400 microfarads.
Described a plurality of capacitor can be made of 2 capacitors, and described a plurality of capacitors can constitute by surpassing 2 capacitors.The capacitor that other certainly can be arranged in described control device, still, relevant capacitor is to be arranged the store electricity network energy and those capacitors of the energy stored to the supply of described control electronic unit subsequently, as mentioned above.
Described control electronic unit can be arranged the electric current that senses described load, and can comprise the relay control, surpass under the situation of predetermined cut-out threshold value if described relay control is arranged at the electric current to described load, operate described relay to turn-off the electric current of described load.Described control device can comprise the hardware that microcontroller or microprocessor or other are suitable, it is arranged the data that receive the electric current that is indicated to load, if and under described electric current surpasses the situation of described predetermined cut-out threshold value, produce and be used to operate the signal of described relay with the electric power that turn-offs described load.
The example embodiment of another aspect of the present invention provides a kind of control appliance that is used for environment adjustment system, and it comprises: the first terminal is used to be connected to the AC electric network source; Second terminal is used to be connected to the environment regulating load; Relay, it is disposed between described the first terminal and described second terminal; First semiconductor switch, it is disposed between described the first terminal and described second terminal; And, control device, it comprises the control electronic unit, wherein, described relay can be used for connecting and cut off to described load with to the electric power of described first semiconductor switch, and, when described relay is provided to described first semiconductor switch power supply, described first semiconductor switch can be used for the electric power from described AC electric network source is opened from described load switching, and switches to described control device.Described control device comprises a plurality of electrolytic capacitors of arranging with being connected in parallel to each other, described capacitor is arranged stored energy when to control device supply grid power, and is arranged when supply described energy to the control electronic unit when grid power is supplied in load.Preferably, described control device also comprises: current sensor, and it is arranged the electric current of sensing to the capacitor supply; And the relay control surpasses under the predetermined situation of cutting off threshold value at the electric current by the current sensor sensing if it is arranged, and operational relay is to turn-off to load with to the electric power of first semiconductor switch.Preferably, described control device also comprises: voltage sensor, and it is arranged the voltage at capacitor sensor two ends; And second semiconductor switch is if it is arranged the voltage at the capacitor two ends to surpass under the situation of predetermined bypass threshold described first semiconductor switch of short circuit and described capacitor.
It will be appreciated, of course, that in conjunction with the described feature of one aspect of the present invention and can be merged in the other aspects of the present invention.
Description of drawings
Only embodiments of the invention are described referring now to accompanying drawing by example, wherein:
Fig. 1 comprises that the environment of the switch mosfet that is used for stealing regulates the schematic circuit diagram of facility, its show (a) when MOSFET by the time current path, and (b) current path when the MOSFET conducting;
Fig. 2 is the schematic diagram of diagram from the synchronous electricity filching device of the zero passage of the facility of Fig. 1;
Fig. 3 is the figure that is illustrated in the MOSFET drain current sensing circuit that uses in the example embodiment of Fig. 2;
Fig. 4 shows the figure of the relay coil driver that uses in the example embodiment of Fig. 2;
Fig. 5 shows the TRIAC that uses and the figure of driver in the example embodiment of Fig. 2;
Fig. 6 shows the figure of the capacitor arrangement of using in the example embodiment of Fig. 2;
Fig. 7 shows the figure of the capacitor short-circuit testing circuit that uses in the example embodiment of Fig. 2.
Embodiment
In luminescent system, control luminous load by relay switch according to example embodiment of the present invention.When relay switch disconnects, come to the power supply of control electronic unit by power subsystem (PSU) based on LNK302.But in case relay closes, then the PSU based on LNK302 can not work, because its input voltage no longer is available.In order to keep the operation of described electronic unit, obtain energy from charge stored capacitor.By " stealing " from the AC load current described capacitor that charges.
Schematically illustrate described thought at Fig. 1 (a) with (b).The working load electric current comes charging capacitor C1, and the energy of being stored is used for operation control electronic unit (DC load).When using electric charge, charging capacitor again when needed.MOSFET Q1 is used as switch, forces load current to come charging capacitor C1, then after having stored enough electric charges with the capacitor bypass.Fig. 1 (a) and Fig. 1 (b) show the current path by with conducting time the as MOSFET Q1 respectively.(in this example, the ground reference is the negative electrode of C1, and it is charged).
The AC load can for example be incandescent lamp bulb, capacitive character, inductive or switching load; But in this example embodiment, described relay switch is only operated in bifilar mode (not having center line) for resistive load; In this example embodiment, for other loadtypes, center line is available, and under those situations, powers to electronic unit continuously based on the power supply of LNK302, has eliminated necessity of stealing.
Fig. 2 illustrates in greater detail the control appliance of the regulating load that is used to control environment.Shown example is used for duplex (two-gang) facility (installation), and it has two loads (load 1 and load 2).
When relay 1 or relay 2 (perhaps both) when disconnecting, are provided for controlling the electric power of electronic unit by chain circuit power supply (via 21V electric power rail (power rail)).But when relay 1 and relay 2 closures, with the chain circuit power supply bypass, and chain circuit power supply is no longer worked.Capacitor C1 powers to electronic unit via the 21V electric power rail again by stealing then, and as mentioned above: the switch behavior by MOSFET Q1 comes alternately to capacitor C1 and AC load (load 1 and load 2) power supply.
MOSFET Q1 is controlled by mosfet driver, and mosfet driver itself is compared device control, described comparator have the following trigger point (LTP) that 22V is provided with and 24V be provided with on trigger point (UTP).Come to described driver and comparator power supply by the 21V electric power rail.
Therefore, control the switch (described comparator is break-make MOSFET grid (gate) driver then) of MOSFET Q1 by comparator.Described comparator is arranged the average voltage ((24V+22V)/2) that guarantees to provide by capacitor C1 about 23V.
But, will produce possible problem for the asynchronous switch of MOSFET Q1, comprise if the drain-source diode of MOSFET Q1 heat problem during conducting during negative half-cycle, and different charging currents depends in the cycle when conducting of MOSFET Q1.Also cause bigger conduction emission at AC electrical network peak value switch.In order to minimize described emission, in order to minimize RMS electric current, and guarantee the enough electric charges in capacitor by capacitor, in each cycle of AC electrical network, carry out stealing, and the voltage zero-cross of itself and AC electrical network is synchronous.
During synchronous stealing, microcontroller (MCU) is reset comparator (by MOSFET Q1) before the zero passage in AC cycle just; Because MOSFET ends, therefore will be in positive period subsequently charging capacitor C1.Condenser voltage one reaches the UTP of comparator, the MOSFET conducting.MCU calculates the time between two high continuous incidents of MOSFET drain voltage, and uses institute's calculated periods of time to come just reset comparator before next zero passage.When MOSFET PSU is in operation, double counting-reset-the recomputate cycle.Draw input from the MOSFET drain voltage to MCU.Whenever when MCU detects trailing edge, its 800 microseconds before the zero-crossing timing of next one expection trigger the pulse of 200 microsecond width.The drop-down comparator of described pulse, and make the capacitor charging reach positive period subsequently.
The advantage of the synchronous stealing of zero passage comprises: reduce the body diode turn-on cycle, reduce body diode losses then; Reduce the conduction emission; And reduce because the flicker of the incandescent lamp bulb that the regular switch of MOSFET causes (particularly low wattage bulb).
Transfer to pay close attention to protection mechanism now, described protection mechanism makes it possible to together with the electrolytic capacitor stealing power supply that acts on control circuit.
At first, described switch comprises the overload current protection.Hardware must bear one hour (maximum tripping operation (trip) time that is used for 10A type C MCB) of maximum current of 15A, and when drain current is bigger than 15A, takes the protectiveness behavior.For any electric current that is higher than 15A (owing to short circuit or the overload in load-side), relay disconnects.MCU uses and monitors drain current continuously at the circuit element shown in Fig. 3; When that electric current was too high, relay was triggered to such an extent that disconnect.CR24 guarantee 25V drain voltage (when MOSFET by) be prevented from reaching MCU, and sensing drain voltage when MOSFET Q1 conducting only.R62 and R34 are selected such that the voltage of sensing remains in the 1.1V (ADC reference voltage).
In this example, make to be used for the relay of switching load electric current and to latch type.The needs for continuous coil power have been eliminated in the use of latching the relay of type.Needed coil actuator has been simplified in the use of twin coil type.Relay contact is classified to 10AX, and they can bear high surge current (it sees the fluorescent lamp load usually) its expression.(in some other embodiment, use the unlatching relay: the use of unlatching relay has following advantage: if the capacitor fail shorted, then relay will automatically disconnect, because lack rail voltage (railvoltage).But, if MOSFET fails to disconnect, even then the unlatching relay can not capacitor for voltage protection).
By NPN transistor (Fig. 4) drive coil, described NPN transistor has integrated base stage and emitter resistor.As mentioned above, use the latch-type relay, using independently, coil disconnects and closing contact; Therefore, approximately the pulse of 30-40 millisecond is enough to encourage respective coil.Relay driver is based on the NPN transistor inverter.Actual test shows, though with coil stimulating about 20 milliseconds and coil voltage greater than 12V, coil will successfully latch or not latch.
Secondly, if MOSFET itself fails to disconnect any fault of comparator, voltage level shifter or driver (perhaps such as), then without limits for condenser voltage.Line current will keep the capacitor charging near the AC line voltage; But capacitor is classified to only 35V.This is a bust, and a kind of mechanism is provided to limiting capacitance device voltage.TRIAC Q18 and the circuit that is associated are exactly (Fig. 5) that so does.If condenser voltage surpasses 27.6V (forward drop that is added CR37 by 27V Zener CR36 is determined), then will trigger TRIAC, thus with load current from the capacitor bypass.The MCU of monitoring condenser voltage is with the sensing abnormal pressure, and relay will be turned off.Described TRIAC will be only handled load current in half of AC electrical network cycle, and only is turned off just connection up to relay.This expression can be classified as TRIAC just sufficiently to be handled maximum rated load electric current 10A and reaches about 50 milliseconds (MCU inference condenser voltage contacts unusual and relay should be triggered disconnect needed time).CR37 is provided, because TRIAC needn't conducting during the negative cycle of AC electrical network---because capacitor itself can not be recharged during negative cycle.R98 has limited the grid current of TRIAC, and R92 and C24 can be adjusted to avoid the false triggering of TRIAC.
In addition, if described (one or more) relay is closed and the AC electric current recovers, then MOSFET will be by (not having electric charge because of C17 and C18), and surge current will be attempted charge C17 and C18.This will be dangerous for circuit, because capacitor will be charged by surge current, described surge current can be the hundreds of ampere on amplitude.If capacitor is charged to greater than 27.6V, then TRIAC is by-pass current, protective circuit.So far, power supply will power up and move, and MOSFET will connect.Actual test shows that consider all delays that relate in the control path of MOSFET, MOSFET controllably reaches minimum 7.5V from 21V net voltage (21V net) in 2 milliseconds.
The 3rd, the parts selective rule of EN60669-2-1 requires: should flow through described short circuit part if electrolytic capacitor, then is no more than 500 milliamperes by short circuit.But, if the capacitor at MOSFET two ends (C17 and C18) by short circuit, then full-load current will flow through described short circuit part, destroy standard.Therefore, capacitor is directly not in parallel; But they by diode by electronics or.CR14, CR17 are the charge paths by MOSFET PSU, and CR19, CR22 are the charge paths by link PSU, and CR20 and CR21 are the discharge paths by airborne electronic equipment parts (21V rail).Because diode is equal to, so tight must the tracking each other of voltage at two capacitor two ends.When any one capacitor during by short circuit, (Fig. 6 and 7) will take place following event chain: Q15 will be by forward bias; This will trigger the shutoff coil of two relays then by R95, make relay as protector thus, disconnecting consumers.If switch disposes with bifilar mode, then link PSU will attempt beginning; But because the output of short circuit, LNK302 will enter the overcurrent shutdown mode.Then, MCU (AVR MCU is interrupted by the MCU abnormal indication signal) is simultaneously by R91 and the notified disaster of R96.
Those three capacitor protection combination of features make it possible to use electrolytic capacitor, and described electrolytic capacitor is enough little to be comprised in the switch facility of compactness of building.
Though described and illustrated the present invention with respect to specific embodiment, those skilled in the art can understand, the present invention itself can carry out the many different change that do not specify at this.Only for example, specific may changing is described now.
Having mentioned that in the above description then such equivalent is incorporated in this under the situation of integral body with known, obvious or foreseeable equivalent or element, just looks like to provide independently like that.Should determine true scope of the present invention referring to claim, it should be interpreted as containing any such equivalent.The reader can understand that also being described to integral body of the present invention preferred, useful or that wait easily or feature is optionally, and does not limit the scope of independent claims.And, though should be understood that so optional integral body or the possible in some embodiments of the invention benefit of feature, may not expect, therefore can not exist in other embodiments.
Claims (9)
1. be used for the control appliance of environment adjustment system, comprise: the first terminal is used to be connected to the AC electric network source; Second terminal is used to be connected to the environment regulating load; Relay is disposed between described the first terminal and described second terminal; First semiconductor switch is disposed between described the first terminal and described second terminal; And, the control electronic unit;
Wherein, described control appliance also comprises a plurality of electrolytic capacitors, and described a plurality of electrolytic capacitors are arranged with being connected in parallel to each other; And
Wherein, described relay is used to connect and cut off the electric current from described AC electric network source to described load, and when described relay was provided to described load supply of current, described first semiconductor switch was used to shunt at least one part of current by described a plurality of capacitors; And
Wherein, described capacitor is arranged the energy of storing from described electric network source when the described electric current of shunting, and the energy of being stored to the supply of described control electronic unit when not shunting described electric current,
Make under the situation of at least one fault of described capacitor even described capacitor also is arranged, described capacitor another continues the energy stored to the supply of described control electronic unit at least.
2. according to the equipment of claim 1, wherein, described control electronic unit is arranged the one or more short circuit that detects described capacitor, and comprise the relay control, operate described relay under the situation of the one or more short circuit that detects described capacitor, to turn-off the electric current of described load if described relay control is arranged.
3. according to the equipment of claim 1 or claim 2, wherein, described capacitor is arranged to electronics or layout.
4. according to each equipment of aforementioned claim, wherein, described control electronic unit also comprises: voltage sensor, described voltage sensor are arranged the voltage at the described capacitor of sensing two ends; And second semiconductor switch is if described second semiconductor switch is arranged the voltage at described capacitor two ends to surpass described first semiconductor switch of short circuit under the situation of being scheduled to bypass threshold.
5. according to each equipment of aforementioned claim, wherein, described environment regulating load comprises and is selected from least one following load: luminous load, heating load and air-conditioning load.
6. according to each equipment of aforementioned claim, wherein, described a plurality of capacitors are made of 2 or more capacitor.
7. according to each equipment of aforementioned claim, wherein, described control electronic unit is arranged the electric current that senses described load, and comprise the relay control, surpass under the situation of predetermined cut-out threshold value if described relay control is arranged at the electric current to described load, operate described relay to turn-off the electric current of described load.
8. a protection is basically with reference to the method for the electrolytic capacitor of the accompanying drawing control appliance that is used for environment adjustment system described here.
9. one kind basically with reference to the accompanying drawing control appliance that is used for environment adjustment system described here.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0902129.6 | 2009-02-09 | ||
| GB0902129.6A GB2467590B (en) | 2009-02-09 | 2009-02-09 | An environmental conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101800425A true CN101800425A (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010116973A Pending CN101800425A (en) | 2009-02-09 | 2010-02-09 | Environment adjustment system |
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| Country | Link |
|---|---|
| CN (1) | CN101800425A (en) |
| GB (1) | GB2467590B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104072A (en) * | 2013-04-05 | 2014-10-15 | 艾默生电气公司 | Current Control for Power Stealing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150348722A1 (en) * | 2013-01-16 | 2015-12-03 | Legend Corporate Services Pty Ltd | Switching circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2818459B1 (en) * | 2000-12-20 | 2004-03-12 | Legrand Sa | APPLIANCE EQUIPPED WITH AN ELECTRONIC CONTROL DEVICE FOR A LOAD AND WITH A POWER SUPPLY UNIT OF THIS DEVICE |
| US7476988B2 (en) * | 2005-11-23 | 2009-01-13 | Honeywell International Inc. | Power stealing control devices |
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2009
- 2009-02-09 GB GB0902129.6A patent/GB2467590B/en not_active Expired - Fee Related
-
2010
- 2010-02-09 CN CN201010116973A patent/CN101800425A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104072A (en) * | 2013-04-05 | 2014-10-15 | 艾默生电气公司 | Current Control for Power Stealing |
| US9684316B2 (en) | 2013-04-05 | 2017-06-20 | Emerson Electric Co. | Controlling current for power stealing in climate control systems |
| CN104104072B (en) * | 2013-04-05 | 2017-12-05 | 艾默生电气公司 | The current control of stealing |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2467590B (en) | 2013-02-06 |
| GB2467590A (en) | 2010-08-11 |
| GB0902129D0 (en) | 2009-03-25 |
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Application publication date: 20100811 |