CN202712066U - Power supply circuit of contactor coil - Google Patents
Power supply circuit of contactor coil Download PDFInfo
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- CN202712066U CN202712066U CN 201220332623 CN201220332623U CN202712066U CN 202712066 U CN202712066 U CN 202712066U CN 201220332623 CN201220332623 CN 201220332623 CN 201220332623 U CN201220332623 U CN 201220332623U CN 202712066 U CN202712066 U CN 202712066U
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Abstract
The application discloses a power supply circuit of a contactor coil, comprising a direct-current/direct-current conversion unit, an alternating-current/ direct-current conversion unit, a selection unit, an energy storage unit, a first switch and a contactor coil, wherein when the first switch is turned on and a first direct-current voltage is greater than a second direct-current voltage, the selection unit selects the first direct-current voltage and the energy storage unit to jointly supply power to the contactor coil; when the first switch is turned on and the first direct-current voltage is smaller than the second direct-current voltage, the selection unit selects the second direct-current voltage and the energy storage unit to jointly supply power to the contactor coil; and when the first switch is turned on and the first direct-current voltage is equal to the second direct-current voltage, the selection unit selects the first direct-current voltage, the second direct-current voltage and the energy storage unit to jointly supply power to the contactor coil. The power supply circuit disclosed by the application can supply power to the contactor coil with high reliability.
Description
Technical field
The application relates to circuit field, relates in particular to a kind of power supply circuits of contactor line bag.
Background technology
Contactor is frequently to close the cut-offfing and close locking device of overload current of closing, carrying and cut-offfing normal current and regulation, is one of critical elements in the automatic control system.Contactor is usually used in controlling the start and stop of the equipment such as motor, blower fan, pump equipment.Contactor being cut-off and when control closed in the pass, generally is that the power supply circuits by contactor line bag in the control contactor are that the energising of contactor line bag, outage realize.After the energising of contactor line bag, can produce very strong magnetic field, so that the action of the adhesive magnet in the contactor drives the contactor pass and closes, when contactor line bag cut off the power supply, adhesive magnet separately drove contactor and cut-offs.
In the prior art, when being the power supply of contactor line bag, generally being to convert line voltage to direct voltage, is the power supply of contactor line bag by this direct voltage.
The inventor finds, when the direct voltage of changing by line voltage in the prior art is the power supply of contactor line bag, if line voltage goes wrong, for example the voltage ripple of power network scope is larger, when low voltage crossing (LVRT, Low Voltage Ride Through) event perhaps occurring, power supply circuits possibly can't normally be the power supply of contactor line bag, even the situation of dead electricity occurs, thereby be that the power supply reliability of contactor line bag is poor.
Summary of the invention
In view of this, the technical problem that the application will solve is, a kind of power supply circuits of contactor line bag are provided, and can rise to contactor line bag power supply reliability.
For this reason, the embodiment of the present application adopts following technical scheme:
The embodiment of the present application provides a kind of power supply circuits of contactor line bag, comprising: DC/DC conversion unit, ac/dc converting unit, selected cell, energy-storage units, the first switch and contactor line bag; Wherein,
Two inputs of DC/DC conversion unit be used for to receive direct voltage, two outputs respectively with the first input end of selected cell be connected the corresponding connection of input; Two inputs of ac/dc converting unit be used for to receive alternating voltage, two outputs respectively with the 3rd input connection corresponding to four-input terminal of selected cell; The first output of selected cell be connected respectively connection corresponding to the two ends of energy-storage units of output, the 3rd output connects the first end of the first switch, the 4th output is connected with the second input of contactor line bag; The second end of the first switch connects the first input end of contactor line bag, and control end is used for reception control signal;
Described ac/dc converting unit is used for alternating voltage is converted to the second direct voltage;
Described DC/DC conversion unit is used for the direct voltage of input is converted to the first direct voltage;
Described selected cell is used for: when the first switch disconnects, and the first direct voltage selects the first direct voltage to provide electric energy for energy-storage units during greater than the second direct voltage; When the first switch disconnects, and the first direct voltage selects the second direct voltage to provide electric energy for energy-storage units during less than the second direct voltage; When the first switch disconnects, and the first direct voltage selects the first direct voltage and the second direct voltage jointly to provide electric energy for energy-storage units when equaling the second direct voltage; When the first switch closure, and the first direct voltage selects the first direct voltage and energy-storage units jointly to provide electric energy for contactor line bag during greater than the second direct voltage; When the first switch closure, and the first direct voltage selects the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag during less than the second direct voltage; When the first switch closure, and the first direct voltage selects the first direct voltage, the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag when equaling the second direct voltage;
Described energy-storage units is used for store electrical energy or provides electric energy for contactor line bag;
The first switch is used under the control of the control signal that control end receives, and disconnects or closure.
Wherein, described selected cell comprises:
The first input end of selected cell connects the anode of the first diode; The negative electrode of the first diode connects the first output of selected cell by the first resistance;
The 3rd input of selected cell and the 3rd output all connect the negative electrode of the first diode;
The second input of selected cell, the second output, four-input terminal connect with the 4th output.
Described selected cell also comprises:
The negative electrode of the first diode also connects the first output of selected cell by the second diode of reversal connection.
Described energy-storage units comprises: the first end of energy-storage units connects the second end of energy-storage units by storage capacitor.
Described ac/dc converting unit realizes by rectification circuit.
Described rectification circuit comprises:
The second input of ac/dc converting unit connects the first output of ac/dc converting unit by the 3rd diode, also connect the second output of ac/dc converting unit by the 4th diode of reversal connection;
The first input end of ac/dc converting unit connects the first output of ac/dc converting unit by the 5th diode, also connect the second output of ac/dc converting unit by the 6th diode of reversal connection.
Described the first switch is realized by triode, field effect transistor, relay or contactor
Technique effect for technique scheme is analyzed as follows:
When the first switch disconnects, and the first direct voltage is during greater than the second direct voltage, and selected cell selects the first direct voltage to provide electric energy for energy-storage units; When the first switch disconnects, and the first direct voltage is during less than the second direct voltage, and selected cell selects the second direct voltage to provide electric energy for energy-storage units; When the first switch disconnects, and the first direct voltage is when equaling the second direct voltage, and selected cell selects the first direct voltage and the second direct voltage jointly to provide electric energy for energy-storage units; When the first switch closure, and the first direct voltage is during greater than the second direct voltage, and selected cell selects the first direct voltage and energy-storage units jointly to provide electric energy for contactor line bag; When the first switch closure, and the first direct voltage is during less than the second direct voltage, and selected cell selects the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag; When the first switch closure, and the first direct voltage is when equaling the second direct voltage, and selected cell selects the first direct voltage, the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag; Thereby for contactor line bag provides AC and DC two kinds of supply power modes, when Alternating Current Power Supply goes wrong, for example the alternating voltage fluctuation range is larger, and when the LVRT event perhaps occurring, can be transformed into the direct current supply mode is the power supply of contactor line bag; When direct current supply goes wrong, when for example DC power supply can't normal power supply, can be the power supply of contactor line bag by ac power supply method; Thereby two kinds of supply power modes of AC and DC power supply are replenished mutually, have improved contactor line bag power supply circuits power supply reliability;
Further, when contactor line bag is not worked, when also namely the first switch disconnects, by the storage unit stores electric energy, thereby can also solve the moment of supply power mode conversion, DC/DC conversion unit or ac/dc converting unit off-capacity support the problem of the larger adhesive energy of contactor line bag with moment.
Description of drawings
Fig. 1 is the power supply circuits first embodiment schematic diagram of the application's contactor line bag;
Fig. 2 is the power supply circuits second embodiment schematic diagram of the application's contactor line bag;
Fig. 2 a～Fig. 2 f is the contactor line bag power supply circuits different operating view of the application's preferred embodiment.
Embodiment
Below, be described with reference to the accompanying drawings the power supply circuits of the application's contactor line bag.
Fig. 1 is the power supply circuits first example structure figure of the application's contactor line bag, as shown in Figure 1, this circuit comprises: DC/DC conversion unit 110, ac/dc converting unit 120, selected cell 130, energy-storage units 140, the first switch T1 and contactor line bag 150; Wherein,
The first input end DC1 of DC/DC conversion unit 110 and the second input DC2 are used for receiving direct voltage, the first output DC3 of DC/DC conversion unit 110 is connected with the first input end A1 of selected cell 130, and the second input A2 that the second output DC4 of DC/DC conversion unit 110 is connected with selected cell connects;
The first input end AC1 of ac/dc converting unit 120 and the second input AC2 are used for receiving alternating voltage, the first output DC5 of ac/dc converting unit 120 is connected with the 3rd input A3 of selected cell 130, and the second output DC6 of ac/dc converting unit 120 is connected with the four-input terminal A4 of selected cell 130;
The first output B1 of selected cell 130 is connected with the first end A5 of energy-storage units 140, the second output B2 of selected cell 130 is connected with the second end A6 of energy-storage units 140, the 3rd output B3 of selected cell 130 connects the first end of the first switch T1, and the 4th output B4 of selected cell 130 is connected with the second input A8 of contactor line bag 150;
The second end of the first switch T1 connects the first input end A7 of contactor line bag 150, and the control end of the first switch T1 is used for reception control signal Io;
Described DC/DC conversion unit 110 is used for the direct voltage of input is converted to the first direct voltage Vd1;
Described ac/dc converting unit 120 is used for alternating voltage is converted to the second direct voltage Vd2;
Described selected cell 130 is used for: when the first switch T1 disconnects, and the first direct voltage Vd1 selects the first direct voltage Vd1 to provide electric energy for energy-storage units 140 during greater than the second direct voltage Vd2; When the first switch T1 disconnects, and the first direct voltage Vd1 selects the second direct voltage Vd2 to provide electric energy for energy-storage units 140 during less than the second direct voltage Vd2; When the first switch T1 disconnects, and the first direct voltage Vd1 is when equaling the second direct voltage Vd2, and the first direct voltage Vd1 and the second direct voltage Vd2 provide electric energy for energy-storage units 140 jointly; When the first switch T1 is closed, and the first direct voltage Vd1 selects the first direct voltage Vd1 and energy-storage units 140 jointly to provide electric energy for contactor line bag 150 during greater than the second direct voltage Vd2; When the first switch T1 is closed, and the first direct voltage Vd1 selects the second direct voltage Vd2 and energy-storage units 140 jointly to provide electric energy for contactor line bag 150 during less than the second direct voltage Vd2; When the first switch T1 is closed, and the first direct voltage Vd1 is when equaling the second direct voltage Vd2, and the first direct voltage Vd1, the second direct voltage Vd2 and energy-storage units 140 provide electric energy for contactor line bag 150 jointly;
Described energy-storage units 140 is used for store electrical energy or provides electric energy for contactor line bag 150;
Wherein, when described energy-storage units 140 was used for store electrical energy, the first end of energy-storage units 140 and the second end can be used as two inputs of energy-storage units 140; When described energy-storage units 140 was used to contactor line bag 150 that electric energy is provided, the first end of described energy-storage units 140 and the second end can be used as two outputs of energy-storage units 140.
The first switch T1 is used under the control of the control signal Io that control end receives, disconnects or closure.
Wherein, the direct voltage that the input of described DC/DC conversion unit 110 receives can be by DC power supply, and for example uninterrupted power supply (UPS, Uninterruptible Power System) or storage battery etc. provide, and do not limit here.
The alternating voltage that the input of described ac/dc converting unit 120 receives can be for line voltage etc., does not limit here.
Power supply circuits shown in Figure 1, for contactor line bag provides AC and DC two kinds of supply power modes, when Alternating Current Power Supply goes wrong, for example the alternating voltage fluctuation range is larger, when the LVRT event perhaps occurring, can be transformed into the direct current supply mode is the power supply of contactor line bag; When direct current supply goes wrong, when for example DC power supply can't normal power supply, can be the power supply of contactor line bag by ac power supply method; Thereby two kinds of supply power modes of AC and DC power supply are replenished mutually, have improved contactor line bag power supply circuits power supply reliability;
Further, select to be converted to ac power supply method from the direct current supply mode when selecting the unit, when perhaps being converted to the direct current supply mode from ac power supply method, the needed instantaneous adhesive energy of contactor line bag is larger, the off-capacity of general DC/DC conversion unit or ac/dc converting unit is to support this adhesive energy, therefore, provide energy-storage units in these power supply circuits, when contactor line bag is not worked, when also namely the first switch disconnects, by the storage unit stores electric energy, thereby solved the moment that supply power mode is changed, DC/DC conversion unit or ac/dc converting unit off-capacity support the problem of larger adhesive energy with moment.
Fig. 2 is the power supply circuits second embodiment schematic diagram of the application's contactor line bag, compared to circuit shown in Figure 1, provides a kind of circuit implementation structure of more specifically power supply circuits;
As shown in Figure 2, selected cell 130 can be realized by following circuit structure:
The first input end A1 of selected cell 130 connects the anode of the first diode D1; The negative electrode of the first diode D1 connects the first output B1 of selected cell 130 by the first resistance R 1;
The 3rd input A3 of selected cell 130 and the 3rd output B3 all connect the negative electrode of the first diode D1;
The second input A2, the second output B2, the four-input terminal A4 of selected cell 130 connect with the 4th output B4.
Preferably, as shown in Figure 2, described selected cell 130 can also comprise: the negative electrode of the first diode D1 also connects the first output B1 of selected cell 130 by the second diode D2 of reversal connection.Here, increase the path at the second diode D2 place, can be when energy-storage units 140 provides electric energy for contactor line bag 150, the path that replaces the first resistance R 1 place, thereby energy-storage units 140 can be 150 power supplies of contactor line bag by the second diode D2 and the first switch T1, reduce energy-storage units 140 and provide in the process of electric energy the electric energy loss of the first resistance R 1 for contactor line bag 150.
Preferably, described ac/dc converting unit 120 can realize by rectification circuit, for example, can pass through the circuit implementation structure shown in Fig. 2, and this circuit is a kind of rectification circuit.As shown in Figure 2, ac/dc converting unit 120 can comprise: the second input AC2 of ac/dc converting unit 120 connects the first output DC5 of ac/dc converting unit 120 by the 3rd diode D3, also connects the second output DC6 of ac/dc converting unit 120 by the 4th diode D4 of reversal connection;
The first input end AC1 of ac/dc converting unit 120 connects the first output DC5 of ac/dc converting unit 120 by the 5th diode D5, also connect the second output DC6 of ac/dc converting unit 120 by the 6th diode D6 of reversal connection.
Preferably, described energy-storage units 140 can be by storage capacitor C1 realization, and as shown in Figure 2, energy-storage units 140 comprises: the first end A5 of energy-storage units 140 connects the second end A6 of energy-storage units by storage capacitor C1.
Preferably, described the first switch T1 can pass through triode, field effect transistor, relay or contactor realization.When the first switch T1 realized by triode, the control end of the first switch T1 can be the base stage of triode; When the first switch T1 realized by field effect transistor, the control end of the first switch T1 can be the grid of field effect transistor.When the first switch T1 realized by relay or contactor, the control end of the first switch T1 can be the moving contact of relay or contactor.
Below, the operation principle of power supply circuits shown in Figure 2 is described, illustrate mainly that here selected cell realizes the operation principle of circuit, the operation principle of AC/DC converting circuit 120 is not given unnecessary details:
Shown in Fig. 2 a, when the first switch T1 disconnects, and the first direct voltage Vd1〉during the second direct voltage Vd2, the first direct voltage Vd1 exports first end and second end of energy-storage units 140 to through the first diode D1, the first resistance R 1, for energy-storage units 140 provides electric energy;
Because the first direct voltage Vd1〉the second direct voltage Vd2, selected cell 130 provides reverse current by the 3rd input for the first output of ac/dc converting unit 120, thereby the 3rd diode D3 and the 5th diode D5 bear reverse voltage, and AC/DC converting circuit 120 is not worked.
Shown in Fig. 2 b, when the first switch T1 disconnects, during and the first direct voltage Vd1＜the second direct voltage Vd2, because the first diode D1 bears reverse voltage, therefore, do not work in DC/DC conversion unit 110; The second direct voltage Vd2 exports first end and second end of energy-storage units 140 to through the first resistance R 1, for energy-storage units 140 provides electric energy.
Shown in Fig. 2 c, when the first switch T1 disconnects, and during the first direct voltage Vd1=the second direct voltage Vd2, the first direct voltage Vd1 exports first end and second end of energy-storage units 140 to through the first diode D1, the first resistance R 1, for energy-storage units 140 provides electric energy, and the second direct voltage exports first end and second end of energy-storage units 140 to through the first resistance R 1, for energy-storage units 140 provides electric energy.
In fact, in actual applications, the chance of the first direct voltage Vd1=the second direct voltage Vd2 is very little, and generally all is instantaneous equating, therefore, when the first switch T1 disconnected, selected cell 130 general works were under the state shown in Fig. 2 a and Fig. 2 b.
Shown in Fig. 2 d, when the first switch T1 closure, and the first direct voltage Vd1〉during the second direct voltage Vd2, the first direct voltage Vd1 exports the input of contactor line bag 150 to through the first diode D1, the first switch T1, for contactor line bag 150 provides electric energy; And because the finite capacity of DC/DC conversion unit 110, therefore, energy-storage units 140 also provides electric energy by the second diode D2, the first switch T1 for contactor line bag 150;
Because the first direct voltage Vd1〉the second direct voltage Vd2, selected cell 130 provides reverse current by the 3rd input for the first output of ac/dc converting unit 120, thereby the 3rd diode D3 and the 5th diode D5 bear reverse voltage, and AC/DC converting circuit 120 is not worked.
Shown in Fig. 2 e, when the first switch T1 is closed, during and the first direct voltage Vd1＜the second direct voltage Vd2, because the first diode D1 bears reverse voltage, therefore, do not work in DC/DC conversion unit 110; The second direct voltage Vd2 exports the input of contactor line bag 150 to through the first switch T1, for contactor line bag 150 provides electric energy; And because the finite capacity of ac/dc converting unit 120, therefore, energy-storage units 140 also provides electric energy by the second diode D2, the first switch T1 for contactor line bag 150.
Shown in Fig. 2 f, when the first switch T1 closure, and during the first direct voltage Vd1=the second direct voltage Vd2, the first direct voltage Vd1 exports the input of contactor line bag 150 to through the first diode D1, the first switch T1, for contactor line bag 150 provides electric energy; The second direct voltage Vd2 exports the input of contactor line bag 150 to through the first switch T1, for contactor line bag 150 provides electric energy; And because the finite capacity of DC/DC conversion unit 110 and ac/dc converting unit 120, therefore, energy-storage units 140 also provides electric energy by the second diode D2, the first switch T1 for contactor line bag 150.
In fact, in actual applications, the chance of the first direct voltage Vd1=the second direct voltage Vd2 is very little, and generally all is instantaneous equating, therefore, when the first switch T1 was closed, selected cell 130 general works were under the state shown in Fig. 2 d and Fig. 2 e.
The implementation structure of selected cell 130 shown in Figure 2 only is example, under the function that satisfies selected cell described in Fig. 1 130, can also realize by other circuit structure, does not give unnecessary details here.
In addition, in actual applications, the moment adhesive energy of contactor line bag be can determine by the contactor of actual selection, energy-storage units, for example size of storage capacitor determined accordingly;
When contactor is applied in the parallel network power generation scene, can be according to the time requirement of parallel network power generation scene to contactor secondary pick-up ability, reasonably select energy-storage units for example storage capacitor discharge and recharge time constant, determine accordingly the size of the first resistance R 1.
Described the first switch T1 is by the controller of control contactor (contactor line bag) on off state, export described control signal Io such as DSP or host computer etc. for described the first switch T1, concrete, when described controller determines that contactor (contactor line bag) is closed, can be its closed control signal of control end output control of the first switch T1, when described controller determines that contactor (contactor line bag) disconnects, can control for the control end output of the first switch T1 the control signal of its disconnection.
The above only is the application's preferred implementation; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (7)
1. the power supply circuits of a contactor line bag is characterized in that, comprising: DC/DC conversion unit, ac/dc converting unit, selected cell, energy-storage units, the first switch and contactor line bag; Wherein,
Two inputs of DC/DC conversion unit be used for to receive direct voltage, two outputs respectively with the first input end of selected cell be connected the corresponding connection of input; Two inputs of ac/dc converting unit be used for to receive alternating voltage, two outputs respectively with the 3rd input connection corresponding to four-input terminal of selected cell; The first output of selected cell be connected respectively connection corresponding to the two ends of energy-storage units of output, the 3rd output connects the first end of the first switch, the 4th output is connected with the second input of contactor line bag; The second end of the first switch connects the first input end of contactor line bag, and control end is used for reception control signal;
Described ac/dc converting unit is used for alternating voltage is converted to the second direct voltage;
Described DC/DC conversion unit is used for the direct voltage of input is converted to the first direct voltage;
Described selected cell is used for: when the first switch disconnects, and the first direct voltage selects the first direct voltage to provide electric energy for energy-storage units during greater than the second direct voltage; When the first switch disconnects, and the first direct voltage selects the second direct voltage to provide electric energy for energy-storage units during less than the second direct voltage; When the first switch disconnects, and the first direct voltage selects the first direct voltage and the second direct voltage jointly to provide electric energy for energy-storage units when equaling the second direct voltage; When the first switch closure, and the first direct voltage selects the first direct voltage and energy-storage units jointly to provide electric energy for contactor line bag during greater than the second direct voltage; When the first switch closure, and the first direct voltage selects the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag during less than the second direct voltage; When the first switch closure, and the first direct voltage selects the first direct voltage, the second direct voltage and energy-storage units jointly to provide electric energy for contactor line bag when equaling the second direct voltage;
Described energy-storage units is used for store electrical energy or provides electric energy for contactor line bag;
The first switch is used under the control of the control signal that control end receives, and disconnects or closure.
2. circuit according to claim 1 is characterized in that, described selected cell comprises:
The first input end of selected cell connects the anode of the first diode; The negative electrode of the first diode connects the first output of selected cell by the first resistance;
The 3rd input of selected cell and the 3rd output all connect the negative electrode of the first diode;
The second input of selected cell, the second output, four-input terminal connect with the 4th output.
3. circuit according to claim 2 is characterized in that, described selected cell also comprises:
The negative electrode of the first diode also connects the first output of selected cell by the second diode of reversal connection.
4. according to claim 1 to 3 each described circuit, it is characterized in that, described energy-storage units comprises: the first end of energy-storage units connects the second end of energy-storage units by storage capacitor.
5. according to claim 1 to 3 each described circuit, it is characterized in that, described ac/dc converting unit realizes by rectification circuit.
6. circuit according to claim 5 is characterized in that, described rectification circuit comprises:
The second input of ac/dc converting unit connects the first output of ac/dc converting unit by the 3rd diode, also connect the second output of ac/dc converting unit by the 4th diode of reversal connection;
The first input end of ac/dc converting unit connects the first output of ac/dc converting unit by the 5th diode, also connect the second output of ac/dc converting unit by the 6th diode of reversal connection.
7. according to claim 1 to 3 each described circuit, it is characterized in that, described the first switch is realized by triode, field effect transistor, relay or contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220332623 CN202712066U (en) | 2012-07-03 | 2012-07-10 | Power supply circuit of contactor coil |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210228126.5 | 2012-07-03 | ||
| CN201210228126 | 2012-07-03 | ||
| CN 201220332623 CN202712066U (en) | 2012-07-03 | 2012-07-10 | Power supply circuit of contactor coil |
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| CN202712066U true CN202712066U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220332623 Withdrawn - After Issue CN202712066U (en) | 2012-07-03 | 2012-07-10 | Power supply circuit of contactor coil |
| CN201210237788.9A Active CN102769340B (en) | 2012-07-03 | 2012-07-10 | Power supply circuit of contactor coil |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210237788.9A Active CN102769340B (en) | 2012-07-03 | 2012-07-10 | Power supply circuit of contactor coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769340A (en) * | 2012-07-03 | 2012-11-07 | 阳光电源股份有限公司 | Power supply circuit of contactor coil |
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600831A (en) * | 2015-01-23 | 2015-05-06 | 南京南瑞继保电气有限公司 | Inverter auxiliary power supply system and method |
| CN107612131A (en) * | 2017-09-30 | 2018-01-19 | 深圳市英威腾电气股份有限公司 | A kind of contactor power circuit and drive system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11332129A (en) * | 1998-05-14 | 1999-11-30 | Oki Electric Ind Co Ltd | Cutting-off circuit for backup battery |
| JP2005020883A (en) * | 2003-06-26 | 2005-01-20 | Densei Lambda Kk | Relaying power supply device |
| CN101286655B (en) * | 2008-05-22 | 2011-08-31 | 中国科学院电工研究所 | Complementary power supply system of wind and photovoltaic power generation based on super capacitor power storage |
| CN102412736A (en) * | 2011-12-08 | 2012-04-11 | 王寅寅 | Electronic transformer |
| CN202712066U (en) * | 2012-07-03 | 2013-01-30 | 阳光电源股份有限公司 | Power supply circuit of contactor coil |
-
2012
- 2012-07-10 CN CN 201220332623 patent/CN202712066U/en not_active Withdrawn - After Issue
- 2012-07-10 CN CN201210237788.9A patent/CN102769340B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769340A (en) * | 2012-07-03 | 2012-11-07 | 阳光电源股份有限公司 | Power supply circuit of contactor coil |
| CN102769340B (en) * | 2012-07-03 | 2014-09-17 | 阳光电源股份有限公司 | Power supply circuit of contactor coil |
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
| CN103198977B (en) * | 2013-03-29 | 2016-05-25 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuits |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102769340A (en) | 2012-11-07 |
| CN102769340B (en) | 2014-09-17 |
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