GB2611826A - Solid-state DC device - Google Patents
Solid-state DC device Download PDFInfo
- Publication number
- GB2611826A GB2611826A GB2114870.5A GB202114870A GB2611826A GB 2611826 A GB2611826 A GB 2611826A GB 202114870 A GB202114870 A GB 202114870A GB 2611826 A GB2611826 A GB 2611826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solid
- state
- relay
- power semiconductor
- conductor path
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/541—Contacts shunted by semiconductor devices
- H01H9/542—Contacts shunted by static switch means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/548—Electromechanical and static switch connected in series
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08142—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in field-effect transistor switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K2017/515—Mechanical switches; Electronic switches controlling mechanical switches, e.g. relais
Abstract
A solid-state DC device 1 comprising a first conductor path 2 and a second conductor path 5, a first power semiconductor 12 in the first conductor part 2, a first snubber 8, a first relay 9 arranged in series to the first power semiconductor 12, a second relay 10 arranged in parallel to the first power semiconductor 12, a control and driver unit 13 configured to drive the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals, it is suggested, that the solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2 to a predefined range of current-values, and that the control and driver unit 13 is embodied to switch on the first relay 9, switch off the second relay 10, and to operate the first power semiconductor 12 to limit the electric current.
Description
Solid-state DC device The present disclosure relates to a Solid-state DC device according to the generic part of claim 1.
It is well known, that DC grids or parts of DC devices which are connected to a grid comprise capacitances respective capacitors for stabilising the DC grid and/or as fast energy and/or power storing part. For industrial DC grids these capacitors are big and have a very high capacitance, for example with 1 farad up to 1000 farad, if the capacitors are supercapacitors. By activating of such a DC grid, it is necessary to charge the capacitors prior to any operation of the DC grid. A capacitor act, load and reload, much faster than most other electric parts, especially much faster than accumulators. Especially at the beginning of the loading of capacitors of a grid, the current would be much higher than currents in this grid in normal operation. This current would be high enough that a circuit breaker would trip in a very short time, and that it stops the further loading and all other operations in this grid.
As this problem is well known, different devices and ways to operate these devices are known to limit the current during the starting operation of such DC grids. These well-known devices and/or operation of them are typically complicated and would need electrotechnics engineers to operate them.
It is an object of the present invention to overcome the drawbacks of the state of the art by providing a solid-state DC device with which it is possible to charge or discharge capacitors respectively capacitances of a system without tripping a circuit breaker of the connected power supply grid, which is further safe and can be operated in an easy way, is achieved.
According to the invention, the aforementioned object is solved by the features of claim 1.
The solid-state DC device limits the current during charging or discharging of at least one capacitor respectively capacitance, especially during charging of the at least one capacitor. The solid-state DC device provides a current which would be high enough to charge the capacitor and Limited low enough that a circuit breaker between the solid-state DC device and the power supply grid would not react and would not switch off the connection to the power supply.
The solid-state DC device can operate without a required human for operating it. The dependent claims describe further preferred embodiments of the invention.
The invention is described with reference to the drawings. The drawings show only exemplary embodiments of the invention.
Fig. 1 illustrates a first preferred embodiment of a solid-state DC device; Fig. 2 illustrates a second preferred embodiment of a solid-state DC device; and Fig. 3 illustrates a third preferred embodiment of a solid-state DC device; Fig. 1 to 3 illustrate solid-state DC devices 1 comprising: a first conductor path 2 from a first power supply connection 3 of the solid-state DC device 1 to a first load connection 4 of the solid-state DC device 1, a second conductor path 5 from a second power supply connection 6 of the solid-state DC device 1 to a second load connection 7 of the solid-state DC device 1, a first power semiconductor 12 of the solid-state DC device 1 arranged in the first conductor path 2, a first snubber 8 connected parallel to the first power semiconductor 12, and connected to the second conductor path 5, a first relay 9 arranged in series to the first power semiconductor 12, a second relay 10 arranged in a parallel conductor path 15, which is electrically parallel to the first power semiconductor 12 and the first relay 9, whereby the second relay 10 comprises a first end part 16 and a second end part 17, a control and driver unit 13 configured to drive the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals, whereby the solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2, especially at the first power supply connection 3, to a predefined range of current-values, and that the control and driver unit 13 is embodied to switch on the first relay 9, switch off the second relay 10, and to operate the first power semiconductor 12 to Limit the electric current to the predefined range of current-values.
The solid-state DC device limits the current during charging or discharging of at least one capacitor respectively capacitance, especially during charging of the at least one capacitor. The solid-state DC device provides a current which would be high enough to charge the capacitor and Limited low enough that a circuit breaker between the solid-state DC device and the power supply grid would not react and would not switch off the connection to the power supply.
The solid-state DC device would operate without a required human for operating it.
The solid-state DC device 1 is a device to operate in an electric grid only with solid-state parts. A solid-state DC device 1 may have and use mechanical switching parts, but only in bypass parts. No mechanical switch is used as disconnecting part for the high current conductor part 2, 5.
The present solid-state DC device 1 is preferably a low-voltage solid-state DC device 1. Low voltage DC usually means up to 1500 volts DC voltage.
The solid-state DC device 1 could be integrated in another electric device or it could be a separated device with an own casing. The solid-state DC device 1 could be embodied as a device which could only be operated for charging or for discharging a load device. Fig. 1 exemplarily shows an embodiment for charging a Load device. Fig. 2 exemplarily shows an embodiment for discharging a load device. Preferably the solid-state DC device 1 is a bidirectional solid-state DC device 1 for charging and discharging a load device. Fig. 3 shows such an embodiment for charging and discharging a load device.
The solid-state DC device 1 could be embodied as device which has only the functionality of Limiting the electric current at the power supply connection. Preferably, the solid-state DC device 1 is part of a DC-circuit breaker or a DC-circuit breaker comprises a solid-state DC device 1 or is embodied to be operated as solid-state DC device 1 for limiting the electric current at the power supply connection.
The solid-state DC device 1 comprises a first conductor path 2 for a first electric potential, especially plus, and a second conductor part 5 for a second electric potential, especially minus. One end of the first conductor path 2 is a first power supply connection 3 of the solid-state DC device 1, the outer end is a first load connection 4 of the solid-state DC device 1. The second conductor path 5 reaches from a second power supply connection 6 of the solid-state DC device 1 to a second Load connection 7 of the solid-state DC device 1.
The solid-state DC device 1 comprises a first power semiconductor 12 which is arranged in the first conductor part 2. Preferably, and as shown, the first power semiconductor is embodied as MOSFET. Other embodiments of the first power semiconductor are possible. Fig. 1 and 2 also show the parts of the MOSFET: Drain 23, Source 24 and Gate 25.
The solid-state DC device 1 comprises at least a first snubber 8 at the first power semiconductor 12. The first snubber 8 is connected parallel to the first power semiconductor 12, and it is connected to the first conductor path 2 on both sides of the first power semiconductor 12 in the first conductor path 2. The first snubber 8 preferably comprises a diode 26, a capacitor 27 and a resistor 28, as shown in Fig. 1 to 3. The first snubber 8 is further connected to the second conductor path 5. The diode 26, a capacitor 27 and a resistor 28 protecting the first power semiconductor 12 from overvoltage during transitions.
The solid-state DC device 1 comprises a first relay 9 arranged in series to the first power semiconductor 12 and it is part of the first conductor path 2. The first relay enables to switch off parts of the first conductor path 2, in cases they are not required.
Preferably the solid-state DC device 1 further comprises a predefined inductor 19, whereby the inductor 19 is arranged in the first conductor path 2. This inductor 19 helps to reduce high currents during charging or discharging.
The solid-state DC device 1 also comprises a second relay 10. The second relay is arranged in a parallel conductor path 15, which is electrically parallel to the first
S
power semiconductor 12 and the first relay 9. In case of an inductor 19, the parallel conductor path 15 is also electrically parallel to the inductor 19.
The parallel conductor path 15 comprises a first end part 16 and a second end part 17. Both end parts are connected to the first conductor path 2. The second end part 17 is usually connected to the first load connection 4. The connection parts of the first end part 16 are described individually for Fig. 1, 2 and 3.
Preferably, the solid-state DC device 1 further comprises a predefined line impedance 18. This Line impedance 18 has preferably an impedance in the range of 100 microhenry. It is arranged in the first conductor path 2 between the first power supply connection 3 and the first end part 16 of the parallel conductor path 15. This line impedance 18 helps to reduce high currents during charging or discharging.
The solid-state DC device 1 comprises a control and driver unit 13 configured to drive at least the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals and various further parts of the solid-state DC device 1. The control and driver unit 13 is connected to each of these parts to communicate with them. Preferably, the control and driver unit 13 comprises a pC.
Preferably the solid-state DC device 1 comprise at Least a first current measuring device 20 which is arranged in or at the first conductor path 2. The first current measuring device 20 is connected to or with the control and driver unit 13. Different embodiments of the first current measuring device 20 are possible.
The solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2, especially at the first power supply connection 3, to a predefined range of current-values. The term "range of current values" means, that different measured currents would cause switching on or off of parts of the solid-state DC device 1.
The control and driver unit 13 is embodied to switch on the first relay 9, switch off the second relay 10, and to operate the first power semiconductor 12 to limit the electric current in the first conductor path 2, especially at the first power supply connection 3, to the predefined range of current-values.
The first power semiconductor 12 is operated and preferably not just simply switched on or off. For operating the first power semiconductor 12, the control and driver unit 13 generates hysteresis modulated turning on and/or turning off signals of the first power semiconductor 12 to operate the first power semiconductor 12. The control and driver unit 13 is sending these hysteresis modulated signals to the first power semiconductor 12.
It is possible to limit the electric current in different cases. Preferably, the control and driver unit 13 is embodied to limit the electric current to the predefined range of current-values for charging or discharging a load, especially a load capacitor, so circuit breakers would not break, respectively trip, and the capacitor could still be charged or discharged.
The solid-state DC device 1 according Fig. 1 is especially designed for charging a load. Fig. 1 shows a solid-state DC device 1 comprising: a first conductor path 2 from a first power supply connection 3 of the solid-state DC device 1 to a first load connection 4 of the solid-state DC device 1, a second conductor path 5 from a second power supply connection 6 of the solid-state DC device 1 to a second load connection 7 of the solid-state DC device 1, a first power semiconductor 12 of the solid-state DC device 1 being arranged in the first conductor path 2, a first snubber 8 connected parallel to the first power semiconductor 12, and connected to the second conductor path 5, a first relay 9 arranged in the first conductor path 2 and next to the drain 23 of the first power semiconductor 12, respectively the connection of the first snubber 8, an inductor 19 arranged in the first conductor path 2 and between the first power semiconductor 12, respectively the source 24 of the first power semiconductor 12, and the first load connection 4, a line impedance 18 arranged in the first conductor path 2 between the first power supply connection 3 and the first relay 9, a second relay 10 arranged in a parallel conductor path 15, a first end part 16 of the parallel conductor path 15 is connected to the first conductor path 2 between the first power supply connection 3, respectively the line impedance 18 and the first relay 9, a second end part 17 of the parallel conductor path 15 is connected to the first load connection 4, a control and driver unit 13 configured to drive the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals, a first current measuring device 20 arranged at the first conductor path 2, and connected with the control and driver unit 13, whereby the solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2, especially at the first power supply connection 3, to a predefined range of current-values for charging a load, especially a load capacitor, whereby the control and driver unit 13 is embodied to switch on the first relay 9, switch off the second relay 10, and to operate the first power semiconductor 12 to limit the electric current to the predefined range of current-values.
According to a different preferred embodiment the solid-state DC device 1 comprises a third relay 11 and a third resistor 21 in series to the third relay 11. The switched on third relay 11 connects the first conductor path 2 and the second conductor path 5 with the third resistor 21. These parts are preferred for discharging a load device with the solid-state DC device 1. The control and driver unit 13 is embodied to switch on the third relay 11 in case of a discharge operation.
The solid-state DC device 1 according Fig. 2 is especially designed for discharging a load. Fig. 2 shows a solid-state DC device 1 comprising: a first conductor path 2 which extends from a first power supply connection 3 of the solid-state DC device 1 to a first load connection 4 of the solid-state DC device 1, a second conductor path 5 from a second power supply connection 6 of the solid-state DC device 1 to a second load connection 7 of the solid-state DC device 1, a first power semiconductor 12 of the solid-state DC device 1 arranged in the first conductor path 2, a first snubber 8 connected parallel to the first power semiconductor 12, and connected to the second conductor path 5, a first relay 9 arranged in the first conductor path 2 and between the drain 23 of the first power semiconductor 12, respectively the connection of the first snubber 8, and the first load connection 4, an inductor 19 arranged in the first conductor path 2 and between the first power semiconductor 12 and a line impedance 18, the line impedance 18 being arranged between the inductor 19 and the first power supply connection 3, a second relay 10 arranged in a parallel conductor path 15, a first end part 16 of the parallel conductor path 15 being connected to the first conductor path 2 between the first power supply connection 3, respectively the line impedance 18, and the inductor 19, a second end part 17 of the parallel conductor path 15 being connected to the first load connection 4, respectively between the first load connection 4 and the first relay 9, a third relay 11 and a third resistor 21 in series to the third relay 11, whereby the switched on third relay 11 connects the first conductor path 2 and the second conductor path 5 with the third resistor 21, whereby the third relay 11 connects the first conductor path 2 between the inductor 19 and the line impedance 18, whereby a control and driver unit 13 is configured to drive the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals, a first current measuring device 20 arranged at the first conductor path 2, and connected with the control and driver unit 13, whereby the solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2, especially at the first power supply connection 3, to a predefined range of current-values for discharging a load, especially a load capacitor, whereby the control and driver unit 13 is embodied to switch on the first relay 9, switch off the second relay 10, switch on the third relay 11 and to operate the first power semiconductor 12 to limit the electric current to the predefined range of current-values.
According to a special preferred embodiment, the solid-state DC device 1 further comprises the first power semiconductor 12 and a second power semiconductor 14. The second power semiconductor 14 is arranged in the first conductor path 2 between the first power semiconductor 12 and the second end part 17 of the parallel conductor path 15. It is arranged contrary, respectively electrically contrary, to the first power semiconductor 12. This preferred embodiment further comprises a second snubber 22 connected in parallel to the second power semiconductor 14, and connected to the second conductor path 5.
If a second power semiconductor 14 is used, the third relay 11 is connected to the first conductor path 2 between the first power semiconductor 12 and the second power semiconductor 14.
Fig. 3 shows an embodiment with a first and a second power semiconductor 12, 14. This embodiment is a combination of the embodiments according to Fig. 1 and Fig. 2, and it could charge and/or discharge Loads. Fig. 3 shows a solid-state DC device 1 comprising: a first conductor path 2 from a first power supply connection 3 of the solid-state DC device 1 to a first load connection 4 of the solid-state DC device 1, a second conductor path 5 from a second power supply connection 6 of the solid-state DC device 1 to a second load connection 7 of the solid-state DC device 1, a first power semiconductor 12 of the solid-state DC device 1 arranged in the first conductor part 2, a first snubber 8 connected parallel to the first power semiconductor 12, and connected to the second conductor path 5, a second power semiconductor 14 being arranged in the first conductor part 2 between the first power semiconductor 12 and the second end part 17 of the parallel conductor path 15, whereby the first power semiconductor 12 and the second power semiconductor 14 are arranged electrically contrary, a second snubber 22 connected parallel to the second power semiconductor 14, and connected to the second conductor path 5, a first relay 9 arranged in the first conductor path 2 and between the drain 23 of the second power semiconductor 14, respectively the connection of the second snubber 22 with the first conductor path 2, and the first load connection 4, an inductor 19 arranged in the first conductor path 2 and between the first power semiconductor 12, respectively the source 24 of the first power semiconductor 12, and the second power semiconductor 14, respectively the source 24 of the second power semiconductor 12, a line impedance 18 arranged in the first conductor path 2 between the first power supply connection 3 and the first power semiconductor 12, a second relay 10 arranged in a parallel conductor path 15, a first end part 16 of the parallel conductor path 15 being connected to the first conductor path 2 between the first power supply connection 3, respectively the line impedance 18, and the first power semiconductor 12, a second end part 17 of the parallel conductor path 15 being connected to the first load connection 4, a third relay 11 and a third resistor 21 in series to the third relay 11, whereby the switched on third relay 11 connects the first conductor path 2 and the second conductor path 5 with the third resistor 21, whereby the third relay 11 connects the first conductor path 2 between the first power semiconductor 12 and the inductor 19, a control and driver unit 13 configured to drive the first power semiconductor 12, the first relay 9 and the second relay 10 with control signals, a first current measuring device 20 being arranged at the first conductor path 2, and connected with the control and driver unit 13, whereby the solid-state DC device 1 is embodied to limit an electric current in the first conductor path 2, especially at the first power supply connection 3, to a predefined range of current-values for charging a load, especially a load capacitor, whereby the control and driver unit 13 is embodied: to charge a load, especially a load capacitor, to switch on the first relay 9, switch off the second relay 10, switch off the third relay 11, switch on the second power semiconductor 14, and to operate the first power semiconductor 12 to limit the electric current to the predefined range of current-values during the charging of the load capacitor, and/or to discharge a Load, especially a load capacitor, to switch on the first relay 9, switch off the second relay 10, switch on the third relay 11, switch off the first power semiconductor 12, and to operate the second power semiconductor 12 to limit the electric current to the predefined range of current-values during discharging of the load capacitor.
This embodiment is preferred and able to charge and discharge loads in a DC grid.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. The exemplary embodiments should be considered as descriptive only and not for purposes of limitation. Therefore, the scope of the present invention is not defined by the detailed description but by the appended claims.
Hereinafter are principles for understanding and interpreting the actual disclosure.
Features are usually introduced with an indefinite article "one, a, an". Unless otherwise stated in the context, therefore, one a, an" is not to be understood as a numeral.
The conjunction or has to be interpreted as inclusive and not as exclusive, unless the context dictates otherwise. "A or B" also includes "A and B", where "A" and "B" represent random features.
By means of an ordering number word, for example "first', "second" or "third", in particular a feature X or an object Y is distinguished in several embodiments, unless otherwise defined by the disclosure of the invention. In particular, a feature X or object Y with an ordering number word in a claim does not mean that an embodiment of the invention covered by this claim must have a further feature X or another object Y. An "essentially in conjunction with a numerical value includes a tolerance of ± 10% around the given numerical value, unless the context dictates otherwise.
For ranges of values, the endpoints are included, unless the context dictates otherwise.
Claims (12)
- CLAIMS1. Solid-state DC device (1) comprising: a first conductor path (2) from a first power supply connection (3) of the solid-state DC device (1) to a first load connection (4) of the solid-state DC device (1), a second conductor path (5) from a second power supply connection (6) of the solid-state DC device (1) to a second load connection (7) of the solid-state DC device (1), a first power semiconductor (12) of the solid-state DC device (1) arranged in the first conductor path (2), a first snubber (8) connected parallel to the first power semiconductor (12), and connected to the second conductor path (5), a first relay (9) arranged in series to the first power semiconductor (12), a second relay (10) arranged in a parallel conductor path (15), which is electrically parallel to the first power semiconductor 12 and the first relay (9), whereby the second relay (10) comprises a first end part (16) and a second end part (17), a control and driver unit (13) configured to drive the first power semiconductor (12), the first relay (9) and the second relay (10) with control signals, characterised in, that the solid-state DC device (1) is embodied to limit an electric current in the first conductor path (2), especially at the first power supply connection (3), to a predefined range of current-values, and that the control and driver unit (13) is embodied to switch on the first relay (9), switch off the second relay (10), and to operate the first power semiconductor (12) to limit the electric current to the predefined range of current-values.
- 2. Solid-state DC device (1) according to claim 1, characterised in, that the control and driver unit (13) generates hysteresis modulated turning on and/or turning off signals of the first power semiconductor (12) to operate the first power semiconductor (12).
- 3. Solid-state DC device (1) according to one of the claims 1 or 2, characterised in, that the control and driver unit (13) is embodied to Limit the electric current to the predefined range of current-values for charging or discharging a Load, especially a load capacitor.
- 4. Solid-state DC device (1) according to one of the claims 1 to 3, characterised in, that the solid-state DC device (1) comprises a predefined line impedance (18), and that the line impedance (18) is arranged in the first conductor path (2) between the first power supply connection (3) and the first end part (16) of the parallel conductor path (15).
- 5. Solid-state DC device (1) according to one of the claims 1 to 4, characterised in, that the solid-state DC device (1) comprises a predefined inductor (19), and that the inductor (19) is arranged in the first conductor path (2).
- 6. Solid-state DC device (1) according to one of the claims 1 to 5, characterised in, that at least a first current measuring device (20) is arranged at the first conductor path (2), and that the first current measuring device (20) is connected with the control and driver unit (13).
- 7. Solid-state DC device (1) according to one of the claims 1 to 6, characterised in, that the solid-state DC device (1) comprises a third relay (11) and a third resistor (21) in series to the third relay (11), and that the switched on third relay (11) connects the first conductor path (2) and the second conductor path (5) with the third resistor (21).
- 8. Solid-state DC device (1) according to claim 7, characterised in, that the the control and driver unit (13) is embodied to switch on the third relay (11) in case of a discharge operation.
- 9. Solid-state DC device (1) according to one of the claims 7 or 8, characterised in, that the solid-state DC device (1) comprises a second power semiconductor (14) arranged in the first conductor path (2) between the first power semiconductor (12) and the second end part (17) of the parallel conductor path (15), and that the second power semiconductor (14) is arranged contrary to the first power semiconductor (12).
- 10. Solid-state DC device (1) according to claim 9, characterised in, that the third relay (11) is connected to the first conductor path (2) between the first power semiconductor (12) and the second power semiconductor (14).
- 11. Solid-state DC device (1) according to claim 10, characterised in, that the control and driver unit (13) is embodied for charging a load, especially a load capacitor, and the control and driver unit (13) is embodied to switch on the first relay (9), switch off the second relay (10), switch off the third relay (11), switch on the second power semiconductor (14), and to operate the first power semiconductor (12) to limit the electric current to the predefined range of current-values during charging the load capacitor.
- 12. Solid-state DC device (1) according to claim 8 or 9, characterised in, that the control and driver unit (13) is embodied for discharging a load, especially a load capacitor, and the control and driver unit (13) is embodied to switch on the first relay (9), switch off the second relay (10), switch on the third relay (11), switch off the first power semiconductor (12), and to operate the second power semiconductor (12) to limit the electric current to the predefined range of current-values during discharging the load capacitor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114870.5A GB2611826A (en) | 2021-10-18 | 2021-10-18 | Solid-state DC device |
| PCT/EP2022/025473 WO2023066519A1 (en) | 2021-10-18 | 2022-10-14 | Solid-state dc device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114870.5A GB2611826A (en) | 2021-10-18 | 2021-10-18 | Solid-state DC device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202114870D0 GB202114870D0 (en) | 2021-12-01 |
| GB2611826A true GB2611826A (en) | 2023-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2114870.5A Pending GB2611826A (en) | 2021-10-18 | 2021-10-18 | Solid-state DC device |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2611826A (en) |
| WO (1) | WO2023066519A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3196728A1 (en) * | 2014-09-16 | 2017-07-26 | Hitachi Automotive Systems, Ltd. | Sensor device |
| EP3664116A1 (en) * | 2018-12-07 | 2020-06-10 | Eaton Intelligent Power Limited | Circuit breaker |
| CN111404113A (en) * | 2020-04-24 | 2020-07-10 | 四川大学 | T-shaped direct current breaker and control method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010007452A1 (en) * | 2010-02-10 | 2011-08-11 | Siemens Aktiengesellschaft, 80333 | Switching relief for a circuit breaker |
| EP2602894B1 (en) * | 2011-12-05 | 2014-04-09 | Efore OYJ | Circuit, method and system for overload protection |
| CN106558866B (en) * | 2016-11-11 | 2019-08-13 | 西安交通大学 | A kind of no arc dc circuit breaker and its application method |
| CN107819457A (en) * | 2017-12-06 | 2018-03-20 | 昆山安平电气有限公司 | A kind of machinery and semiconductors coupling formula switch and its application method |
| KR102652596B1 (en) * | 2018-08-27 | 2024-04-01 | 엘에스일렉트릭(주) | Bi-directional solid state circuit breaker |
-
2021
- 2021-10-18 GB GB2114870.5A patent/GB2611826A/en active Pending
-
2022
- 2022-10-14 WO PCT/EP2022/025473 patent/WO2023066519A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3196728A1 (en) * | 2014-09-16 | 2017-07-26 | Hitachi Automotive Systems, Ltd. | Sensor device |
| EP3664116A1 (en) * | 2018-12-07 | 2020-06-10 | Eaton Intelligent Power Limited | Circuit breaker |
| CN111404113A (en) * | 2020-04-24 | 2020-07-10 | 四川大学 | T-shaped direct current breaker and control method thereof |
| US20210336435A1 (en) * | 2020-04-24 | 2021-10-28 | Sichuan University | T-type dc circuit breaker and method for controlling the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202114870D0 (en) | 2021-12-01 |
| WO2023066519A1 (en) | 2023-04-27 |
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