CN112865159A - Driving device of switch and modular multilevel converter - Google Patents
Driving device of switch and modular multilevel converter Download PDFInfo
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- CN112865159A CN112865159A CN201911194350.5A CN201911194350A CN112865159A CN 112865159 A CN112865159 A CN 112865159A CN 201911194350 A CN201911194350 A CN 201911194350A CN 112865159 A CN112865159 A CN 112865159A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
Abstract
The invention relates to a driving device of a switch and a modular multilevel converter, belonging to the technical field of direct current transmission. The driving device controls the on-off of a switch tube in the driving circuit through a trigger signal output by the photoelectric conversion circuit, and realizes the action of a bypass switch by using the energy of the energy storage circuit; through the charging control circuit, when the voltage of the energy storage element in the energy storage circuit is smaller than a set value, the quick charging circuit is controlled to be switched off, and when the voltage of the energy storage element in the energy storage circuit is larger than or equal to the set value, the quick charging circuit is controlled to be switched on. The driving device effectively avoids the problem that the charging resistor is burnt out due to the independent use of the quick charging circuit in the prior art, and ensures that the whole driving device can reliably control the bypass switch.
Description
Technical Field
The invention belongs to the technical field of direct current transmission, and particularly relates to a driving device of a switch and a modular multilevel converter.
Background
An MMC (Modular Multilevel Converter) is a topology structure widely adopted in flexible direct-current transmission engineering at present, the topology includes 6 symmetrical bridge arms, each bridge arm is generally formed by cascading dozens or even hundreds of half-bridge sub-modules shown in fig. 1(a) or full-bridge sub-modules shown in fig. 1(b), and each sub-module is configured with a bypass switch in order to realize a redundant control function of a Converter valve when the sub-module fails. In the operation process of the converter valve, when a certain submodule has a fault, the fault submodule is quickly cut off by closing the bypass switch so as to ensure that the whole system continues to normally operate, and therefore, the reliable control of the bypass switch is important.
The drive device of the bypass switch is usually fixed on the bypass switch, is positioned inside the sub-module and is separated from the main control board card of the sub-module, so that the drive device and the main control board card are electrically connected, and the mode of adopting a lead in the prior art is easily subjected to electromagnetic interference in a high-voltage environment, so that the bypass switch malfunctions, and the system can be tripped and shut down seriously. Therefore, designing a safe and reliable electrical connection mode is an important guarantee for stable operation of the system.
When the drive signal is effective for a long time, the energy storage capacitor (namely the energy storage element) can be continuously discharged through the bypass switch closing drive coil and the switch tube, and meanwhile, the power supply can continuously charge the energy storage capacitor with large current through the charging resistor, when the power supply adopts direct current 220V, and the charging resistor is 1k omega/2W, the charging current is about 220mA, so that the charging resistor is serious in heating and burnt out. Therefore, how to ensure the normal operation of the charging circuit is an important problem to be solved urgently by the bypass switch driving device.
Disclosure of Invention
The invention aims to provide a switch driving device and a modular multilevel converter, which are used for solving the problem that a charging resistor is heated and even burnt out due to long-term large-current charging of a power supply of the driving device when a switch is driven for a long time.
In order to solve the above technical problem, the present invention provides a technical solution of a driving apparatus for a switch, including:
the input end of the driving circuit is used for receiving a switch control instruction, and the output end of the driving circuit is used for connecting one end of a switch driving coil;
the energy storage circuit is used for discharging electricity to the switch driving coil, and an energy storage element in the energy storage circuit is connected with the other end of the switch driving coil;
the fast charging circuit and the slow charging circuit are respectively connected with the energy storage circuit and used for supplying power to an energy storage element in the energy storage circuit, a fast charging resistor is arranged in the fast charging circuit, a slow charging resistor is arranged in the slow charging circuit, and the resistance value of the fast charging resistor is smaller than that of the slow charging resistor;
and the charging control circuit is used for controlling the quick charging circuit to be switched off when the voltage of the energy storage element in the energy storage circuit is less than a set value, and controlling the quick charging circuit to be switched on when the voltage of the energy storage element in the energy storage circuit is greater than or equal to the set value.
In order to solve the technical problem, the invention provides a technical scheme of a modular multilevel converter, which comprises an upper bridge arm and a lower bridge arm, wherein the upper bridge arm and/or the lower bridge arm are/is provided with a sub-module and a corresponding bypass switch, and the modular multilevel converter also comprises a driving device of the switch, and the driving device is used for driving the corresponding bypass switch.
The two technical schemes have the technical effects that:
according to the invention, through the arranged charging control circuit, the quick charging circuit and the slow charging circuit, when the voltage of the energy storage element in the energy storage circuit is smaller than a set value, the quick charging circuit is controlled to be switched off, only the slow charging circuit is switched on to charge a small current, and the resistance value of the slow charging resistor in the slow charging circuit is larger, so that the resistor can not be heated even if the energy storage element is powered for a long time; when the voltage of the energy storage element in the energy storage circuit is larger than or equal to a set value, the energy storage element in the energy storage circuit is not in a long-term discharge state, the quick charge circuit is controlled to be conducted at the moment, the large current is charged, the duration time of the large current charging is short, the quick charge resistor in the quick charge circuit cannot generate heat excessively even passing through the large current, and therefore the resistor is prevented from being burnt out due to excessive heating.
In order to realize the control of the charging control circuit on the fast charging circuit, further, the charging control circuit includes: the input end of the amplitude discriminator is connected with an energy storage element in the energy storage circuit, the output end of the amplitude discriminator is connected with the control end of the switch tube through a voltage-stabilizing tube and a divider resistor, and the switch tube is connected in the quick charging circuit in series.
When the voltage of the energy storage element in the energy storage circuit is smaller than a set value, the input voltage of the amplitude discriminator is smaller than the set value, the amplitude discriminator outputs high level, the voltage stabilizing tube is not conducted, the control end of the switch tube is in a cut-off state, and the quick charging circuit is not conducted.
When the voltage of an energy storage element in the energy storage circuit is larger than or equal to a set value, the input voltage of the amplitude discriminator is larger than or equal to the set value, the amplitude discriminator outputs a low level, the voltage stabilizing tube is conducted, the control end of the switch tube is in a conducting state, the switch tube is further in the conducting state, and the quick charging circuit is conducted.
In order to enable the energy storage element to continuously store energy when the power supply of the fast charging circuit and/or the slow charging circuit is abnormally powered down, further, a protection diode is arranged in the fast charging circuit and/or the slow charging circuit.
The switch further comprises a freewheeling diode connected in parallel with the switch driving coil and used for absorbing residual energy of the switch driving coil when the switch is turned off.
In order to realize the driving of the switch, further, the driving circuit includes a switching tube connected in series between the switching driving coil and the ground, and a control end of the switching tube is connected with a current limiting resistor and a voltage dividing resistor respectively, wherein the current limiting resistor is used for connecting an input end of the driving circuit, and the voltage dividing resistor is used for grounding.
In order to protect the driving circuit from being damaged by surge current, the driving circuit further comprises a TVS (transient voltage suppression diode) of the control end, and the TVS is connected with the voltage dividing resistor in parallel and then grounded.
In order to avoid electromagnetic interference in a high-voltage environment, the driving circuit further comprises a photoelectric conversion circuit, the photoelectric conversion circuit comprises a receiving optical module and an optical pair, the input end of the receiving optical module is used for receiving an optical signal sent by the controller, the output end of the receiving optical module is connected with the primary side of the optical pair, and the secondary side of the optical pair is connected with the input end of the driving circuit and used for generating a switch control instruction.
Drawings
FIG. 1(a) is a schematic diagram of a half-bridge submodule in the prior art;
FIG. 1(b) is a schematic diagram of a full bridge submodule in the prior art;
FIG. 2 is a schematic view of a switch actuator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a photoelectric conversion circuit according to an embodiment of the driving apparatus of the present invention;
fig. 4 is a schematic diagram of another charging control circuit according to an embodiment of the driving apparatus of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Drive arrangement embodiment:
the driving apparatus of a switch shown in fig. 2 includes a photoelectric conversion circuit, a driving circuit, an energy storage circuit, a fast charging circuit, a slow charging circuit, and a charging control circuit. The photoelectric conversion circuit comprises a receiving optical module and an optical couple, wherein the input end of the receiving optical module is used for receiving an optical signal sent by the controller, the output end of the receiving optical module is connected with the primary side of the optical couple, and the secondary side of the optical couple is connected with the input end of the driving circuit and used for generating a switch control instruction.
The photoelectric conversion circuit is connected with the sub-module controller through an optical fiber, the specific circuit principle is as shown in fig. 3, the photoelectric conversion circuit comprises a receiving optical module OPT1, an optical couple OPT2 and a peripheral circuit, the input end of the receiving optical module OPT1 is used for receiving an optical signal sent by the controller, the output end of the receiving optical module OPT1 is connected with the primary side of the optical couple OPT2, and the secondary side of the optical couple OPT2 is connected with the input end of the driving circuit and used for generating a switch control instruction. When the receiving optical module OPT1 receives the optical signal sent by the sub-module controller, a low level is output, the optical couple OPT2 works to output a high level (namely, a trigger signal of the bypass switch), and the driving circuit is triggered. The peripheral circuit of the photoelectric conversion circuit comprises a capacitor C2 and a diode D5 which are connected with the primary side of the optical couple OPT2 in parallel and are used for absorbing interference signals input into the optical couple OPT 2.
In the embodiment, the photoelectric conversion circuit is connected with a submodule controller (the submodule is a half-bridge submodule or a full-bridge submodule) by adopting optical fibers, so that the anti-interference capability of the circuit is enhanced; and the use of the optical couple OPT2 realizes the isolation of control weak current and driving power supply strong current.
The driving circuit comprises a switching tube S1 connected in series between a switching driving coil and the ground, a control end of the switching tube S1 is respectively connected with a current limiting resistor R1, a voltage dividing resistor R2 and a bidirectional TVS (bidirectional transient voltage suppression diode) D2, wherein the current limiting resistor R1 is used for connecting an input end of the driving circuit, and the voltage dividing resistor R2 is connected with the bidirectional TVS tube D2 in parallel and then Grounded (GND).
The output end of the drive circuit is connected with one end of the switch drive coil, and the other end of the switch drive coil is connected with the energy storage element C1 in the energy storage circuit.
In this embodiment, the switching tube S1 used in the driving circuit is an IGBT, and the control of the bypass switch K is realized by driving the IGBT to turn on and off. The turn-on and turn-off speeds of the IGBT are both in nanosecond level, so that the trigger signal of the bypass switch can be quickly responded. In the driving circuit, a circuit formed by connecting a current-limiting resistor R1 and a voltage-dividing resistor R2 in series and a bidirectional TVS tube D2 are connected with the IGBT control end, a series resistor formed by the current-limiting resistor R1 and the voltage-dividing resistor R2 is used for limiting the current of the IGBT control end and ensuring the voltage of reliable conduction of the IGBT control end, the TVS tube D2 is a bipolar voltage-stabilizing tube, when two poles of the TVS tube receive transient impact, the TVS tube D2 changes from high impedance to low impedance, absorbs transient energy, clamps the voltage of the two poles to a rated value and protects the IGBT from being damaged.
The fast charging circuit and the slow charging circuit are connected to two ends of an energy storage element C1 respectively and used for supplying power to the energy storage element C1 in the energy storage circuit, a fast charging resistor Rq and a power supply source are arranged in the fast charging circuit, a slow charging resistor Rs and a power supply source are arranged in the slow charging circuit, the resistance of the fast charging resistor Rq is smaller than that of the slow charging resistor Rs, and a protection diode D4 is arranged in a public branch of the fast charging circuit and the slow charging circuit.
The charging control circuit mainly comprises an amplitude discriminator and a switch tube, wherein the amplitude discriminator comprises a power supply reference chip T, and voltage division resistors R3 and R4; the series end of the voltage dividing resistors R3 and R4 is used as the input end of the amplitude discriminator and is connected to two ends of the energy storage element C1, the input end of the power supply reference chip T is connected in parallel with the voltage dividing resistor R4, the output end of the power supply reference chip T is the output end of the amplitude discriminator, the output end of the amplitude discriminator is used for being connected with the control end of the switch tube S2 through the voltage stabilizing tube D3 and the voltage dividing resistor R5, the resistor R6 is connected between the control end (base electrode) and the collector electrode of the switch tube S2, and the switch tube S2 is connected in series in the quick charging circuit.
The charging control circuit realizes the switching between slow charging and fast charging, the large resistor (slow charging resistor Rs) is used for charging at the initial power supply stage of the power supply, and the large resistor and the small resistor (fast charging resistor Rq) are used for parallel charging when the switching condition is reached, and the fast charging is carried out to the stable state. The working process is as follows: when a trigger signal of the bypass switch exists, the bypass switch is closed, the energy storage circuit discharges, and when a switching condition is reached, the energy storage circuit is switched back to be charged by the large resistor, so that the charging resistors (the slow charging resistor Rs and the fast charging resistor Rq) are effectively protected from being burnt out. In the design of Rs and Rq in this embodiment, the condition that the bypass switch is abnormally closed after the sub-module is powered on needs to be considered, and the resistance values of Rs and Rq are calculated by using an RC circuit charging formula according to the required charging time, where the RC circuit charging formula is:
Vt＝Vo+(VCC-Vo)*[1-exp(-t/RC)]
wherein t is charging time, R is a resistance to be solved (Rs or Rq), C is a capacitance value of the energy storage element C1, VCC is charging stabilization voltage, Vt is charging t time voltage, and Vo is charging 0 time voltage.
By using the amplitude discriminator effect of the power supply reference chip T, when the voltage of a capacitor energy storage (namely an energy storage element) C1 is less than (R3+ R4) 2.5/R4, the output of the power supply reference chip T is at a high level, a voltage regulator tube D3 is not conducted, no voltage drop exists at two ends of a resistor R6, a switch tube S2 is cut off, a quick charging circuit is in a cut-off state, and a charging circuit is charged slowly and effectively; when the voltage of the energy storage capacitor C1 is greater than or equal to (R3+ R4) 2.5/R4 (namely the switching condition), the output of the power supply reference chip T is at a low level, the voltage stabilizing tube D3 is conducted, voltage drop exists at two ends of the resistor R6, the switch tube S2 is conducted, the quick charging circuit is in an on state, and the charging circuit is in parallel connection with the slow charging and the quick charging.
The energy storage circuit adopts energy storage capacitor C1, and power supply charges the electric capacity through charging resistor until the steady state, and energy storage capacitor C1 is connected with switch tube S1, bypass switch K 'S switch drive coil, and when bypass switch' S trigger signal was effective, make switch tube S1 among the drive circuit switch on, the switch drive coil is supplied with to the energy of energy storage capacitor C1 storage, under the magnetic force effect of switch drive coil, bypass switch K is closed.
In this embodiment, a protection diode D4 is provided in the fast charging circuit and/or the slow charging circuit, and when the power supply is abnormally powered down, the energy storage capacitor can continue to store energy for closing the bypass switch.
According to the driving device of the switch, after the power supply supplies power, the power supply firstly charges the energy storage capacitor through the slow charging circuit, when the voltage of the energy storage capacitor rises to a certain value in the charging process, the power reference chip T works to output low level, the switching tube connected in series with the fast charging branch circuit is conducted, and the charging circuit is switched into the slow charging circuit and the fast charging circuit to charge the energy storage capacitor simultaneously; when the drive signal of the bypass switch is effective, the switch tube in the drive circuit is closed, the bypass switch is closed, the energy storage capacitor discharges through the switch drive coil, after the voltage of the energy storage capacitor is reduced to a certain value, the power reference chip T works to output a high level, the switch tube connected in series with the fast charging branch circuit is closed, the charging circuit is switched back to the slow charging circuit, and only the slow charging circuit works.
The driving device controls the on-off of a switching tube in the driving circuit through a trigger signal output by the photoelectric conversion circuit, and realizes the action of a bypass switch by utilizing the energy of the energy storage circuit; meanwhile, the charging circuit adopts the quick charging circuit and the slow charging circuit which are connected in parallel, and the voltage at two ends of the energy storage capacitor in the energy storage circuit is utilized to control whether the quick charging circuit works or not, so that the switching of the charging circuit is realized, the problem that the charging resistor is burnt out due to the independent use of the quick charging circuit in the prior art is effectively avoided, and the reliable control of the whole driving device on the bypass switch is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. For example, the charging control circuit in this embodiment may also adopt the circuit shown in fig. 4, sample the voltage across the energy storage capacitor C1 through the sampling circuit Y1, and output a control signal for controlling the on/off of the switch S2 through the comparator Y2. When the voltage of the energy storage capacitor C1 is greater than or equal to a set value, the comparator Y2 outputs a signal to control the switch S2 to be switched on, and when the voltage of the energy storage capacitor C1 is less than the set value, the comparator Y2 outputs a signal to control the switch S2 to be switched off.
For another example, the protection diode D4 in this embodiment is disposed on the common branch of the fast charging circuit and the slow charging circuit as shown in fig. 2, and as another implementation, a diode may be disposed in the non-common branch of the fast charging circuit or the slow charging circuit.
For another example, the sub-module controller in this embodiment may be a computer, a microprocessor, such as an ARM, or a programmable chip, such as an FPGA, a DSP, or the like.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Converter embodiment:
the present embodiment provides a modular multilevel converter, including an upper bridge arm and a lower bridge arm (for example, 6 symmetrical bridge arms mentioned in the background art), where each of the upper bridge arm and the lower bridge arm is provided with a sub-module, a corresponding bypass switch, and a driving device for the bypass switch, and is used to drive the corresponding bypass switch.
It should be noted that when a certain sub-module on a certain bridge arm corresponding to the modular multilevel converter is not provided with a bypass switch, a driving device does not need to be provided; that is, the corresponding drive device is configured only for the corresponding submodule on the corresponding leg configured with the bypass switch.
Claims (8)
1. A drive device for a switch, comprising:
the input end of the driving circuit is used for receiving a switch control instruction, and the output end of the driving circuit is used for connecting one end of a switch driving coil;
the energy storage circuit is used for discharging electricity to the switch driving coil, and an energy storage element in the energy storage circuit is connected with the other end of the switch driving coil;
the fast charging circuit and the slow charging circuit are respectively connected with the energy storage circuit and used for supplying power to an energy storage element in the energy storage circuit, a fast charging resistor is arranged in the fast charging circuit, a slow charging resistor is arranged in the slow charging circuit, and the resistance value of the fast charging resistor is smaller than that of the slow charging resistor;
and the charging control circuit is used for controlling the quick charging circuit to be switched off when the voltage of the energy storage element in the energy storage circuit is less than a set value, and controlling the quick charging circuit to be switched on when the voltage of the energy storage element in the energy storage circuit is greater than or equal to the set value.
2. The driving apparatus of the switch according to claim 1, wherein the charge control circuit comprises: the input end of the amplitude discriminator is connected with an energy storage element in the energy storage circuit, the output end of the amplitude discriminator is connected with the control end of the switch tube through a voltage-stabilizing tube and a divider resistor, and the switch tube is connected in the quick charging circuit in series.
3. The driving device of the switch according to claim 1 or 2, wherein a protection diode is arranged in the fast charging circuit and/or the slow charging circuit.
4. The driving apparatus of the switch according to claim 1, further comprising a freewheeling diode for connecting the driving coils of the switch in parallel.
5. The driving device of the switch according to claim 1, wherein the driving circuit comprises a switching tube connected in series between the driving coil of the switch and the ground, and a control end of the switching tube is connected with a current limiting resistor and a voltage dividing resistor respectively, wherein the current limiting resistor is used for connecting an input end of the driving circuit, and the voltage dividing resistor is used for grounding.
6. The driving apparatus of the switch according to claim 5, further comprising a TVS transistor of the control terminal, wherein the TVS transistor is connected in parallel with the voltage dividing resistor and then grounded.
7. The driving device of the switch according to claim 1 or 5, further comprising a photoelectric conversion circuit, wherein the photoelectric conversion circuit comprises a receiving optical module and an optical pair, an input end of the receiving optical module is used for receiving the optical signal sent by the controller, an output end of the receiving optical module is connected to a primary side of the optical pair, and a secondary side of the optical pair is connected to an input end of the driving circuit for generating the switch control command.
8. Modular multilevel converter comprising an upper leg and a lower leg, characterized in that said upper and/or lower leg is provided with sub-modules and corresponding bypass switches, and further comprising driving means for the switches according to any of claims 1-7 for driving said corresponding bypass switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194350.5A CN112865159A (en) | 2019-11-28 | 2019-11-28 | Driving device of switch and modular multilevel converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194350.5A CN112865159A (en) | 2019-11-28 | 2019-11-28 | Driving device of switch and modular multilevel converter |
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| CN112865159A true CN112865159A (en) | 2021-05-28 |
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| CN201911194350.5A Pending CN112865159A (en) | 2019-11-28 | 2019-11-28 | Driving device of switch and modular multilevel converter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013158169A (en) * | 2012-01-31 | 2013-08-15 | Denso Corp | Driver of driven switching element |
| CN104009613A (en) * | 2014-05-28 | 2014-08-27 | 许继电气股份有限公司 | By-pass switch trigger device of MMC flexible direct-current electronic module |
| CN206211832U (en) * | 2016-11-30 | 2017-05-31 | 武汉兴通力电源技术有限公司 | A kind of power initiation switching circuit for Switching Power Supply |
| CN106849635A (en) * | 2017-04-01 | 2017-06-13 | 中国科学院电工研究所 | Cascade connection multi-level transverter submodule pressure bypass circuit out of control |
| CN109391131A (en) * | 2018-10-12 | 2019-02-26 | 许继集团有限公司 | A kind of submodule of MMC valve by-pass switch driving device |
-
2019
- 2019-11-28 CN CN201911194350.5A patent/CN112865159A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013158169A (en) * | 2012-01-31 | 2013-08-15 | Denso Corp | Driver of driven switching element |
| CN104009613A (en) * | 2014-05-28 | 2014-08-27 | 许继电气股份有限公司 | By-pass switch trigger device of MMC flexible direct-current electronic module |
| CN206211832U (en) * | 2016-11-30 | 2017-05-31 | 武汉兴通力电源技术有限公司 | A kind of power initiation switching circuit for Switching Power Supply |
| CN106849635A (en) * | 2017-04-01 | 2017-06-13 | 中国科学院电工研究所 | Cascade connection multi-level transverter submodule pressure bypass circuit out of control |
| CN109391131A (en) * | 2018-10-12 | 2019-02-26 | 许继集团有限公司 | A kind of submodule of MMC valve by-pass switch driving device |
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