CN211720481U - Active rectification control system of network electricity energy storage workover rig - Google Patents
Active rectification control system of network electricity energy storage workover rig Download PDFInfo
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- CN211720481U CN211720481U CN202020747900.3U CN202020747900U CN211720481U CN 211720481 U CN211720481 U CN 211720481U CN 202020747900 U CN202020747900 U CN 202020747900U CN 211720481 U CN211720481 U CN 211720481U
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Abstract
The utility model belongs to the technical field of net electricity energy storage workover rig complete equipment, especially, relate to a net electricity energy storage workover rig active rectification control system. The active rectification control system of the grid power storage workover rig is reliable in performance and simple in maintenance, well site power distribution resources of an oil field can be fully utilized, and the working requirement of the grid power storage workover rig can be met through integrated control. An active rectification control system of a network electricity energy storage workover rig comprises: a synchronous rectification circuit and a drive control circuit; the synchronous rectification circuit is of a three-phase full-bridge topology structure formed by IGBT (insulated gate bipolar transistor) switching units, and the alternating current input side of the synchronous rectification circuit is also connected with a voltage transformer; the drive control circuit consists of a voltage regulating circuit and a drive control chip; the voltage regulating circuit comprises a first comparator U1, a second comparator U2 and a third comparator U3; the driving control chip adopts a monolithic integrated circuit with a chip model TC 787.
Description
Technical Field
The utility model belongs to the technical field of net electricity energy storage workover rig complete equipment, especially, relate to a net electricity energy storage workover rig active rectification control system.
Background
The workover rig is used as important equipment for workover in an oil field and is mainly used for lifting and lowering down faulty and damaged underground equipment tools such as oil pipes, sucker rods and oil-well pumps. The traditional workover rig is driven by a diesel engine, so that the defects of high energy consumption, heavy pollution, high maintenance cost, low power utilization rate and the like exist. Under the vigorous advocation of China, technical personnel put forward the working idea of changing oil into electricity of a workover rig from the aspects of energy conservation, emission reduction, green and low carbon and the like. The oil-to-electricity conversion is specifically based on an alternating current frequency conversion technology, and the power supply of a power grid is used as a power source of the workover rig, so that the power grid workover work process is finally realized. However, in the actual operation process of the grid power well workover, research and development personnel find that the grid power well workover rig cannot always exert due efficiency due to the limitation of the capacity of the well site voltage transformation equipment and a matched motor, so that the working efficiency of the grid power well workover is insufficient, and the operation is very effective.
SUMMERY OF THE UTILITY MODEL
The utility model provides a net electric energy storage workover rig active rectification control system, this net electric energy storage workover rig active rectification control system dependable performance, maintenance are simple, but make full use of oil field well site distribution resource can satisfy the work demand that realizes net electric energy storage workover rig through integrated control.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an active rectification control system of a network electricity energy storage workover rig comprises:
a synchronous rectification circuit and a drive control circuit;
the synchronous rectification circuit is of a three-phase full-bridge topology structure formed by IGBT (insulated gate bipolar transistor) switching units, and the alternating current input side of the synchronous rectification circuit is also connected with a voltage transformer;
the drive control circuit consists of a voltage regulating circuit and a drive control chip; the voltage regulating circuit comprises a first comparator U1, a second comparator U2 and a third comparator U3; the positive pole input end of the first comparator U1 is grounded through a first resistor R1, and the negative pole input end of the first comparator U1 is connected with the output side of the voltage transformer; positive pole of second comparator U2The input terminal is grounded through a second resistor R2, and the negative input terminal of a second comparator U2 is connected with a reference voltage UIConnecting; the positive electrode input end of the third comparator U3 is grounded through a third resistor, and the negative electrode input end of the third comparator U3 is respectively connected with the output end of the first comparator U1 and the output end of the second comparator U2 through a deviation resistor R0; the driving control chip adopts a single-chip integrated circuit with the model number of TC 787; the 18 th pin, the 2 nd pin and the 1 st pin of the TC787 chip are respectively connected with the synchronous voltages of the A phase, the B phase and the C phase of the network power supply; the 12 th pin, the 10 th pin and the 8 th pin of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin, the 7 th pin and the 11 th pin of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm; the 4 th pin of the TC787 chip is connected to the output of a third comparator U3.
Further, the method also comprises the following steps: a filter circuit; the filter circuit is arranged on the DC output side of the synchronous rectification circuit and is composed of a rectifier diode DLFilter resistor RLAnd a filter capacitor CLForming; wherein, the rectifier diode DLAnd a filter resistor RLSeries arrangement, filter capacitor CLAnd a filter resistor RLAre connected in parallel.
Preferably, a first feedback resistor R4 is further connected between the negative input end and the output end of the first comparator.
Preferably, a second feedback resistor R5 is further connected between the negative input end and the output end of the second comparator.
Preferably, a third feedback resistor R6 is further connected between the negative input terminal and the output terminal of the third comparator.
Preferably, the 6 th pin of the TC787 chip is used for adjusting the working mode of the TC787 chip; when the 6 th pin of the TC787 chip is connected to a high level, the working mode of the TC787 chip is double narrow pulse output; when the 6 th pin of the TC787 chip is connected to a low level, the working mode of the TC787 chip is single-width pulse output.
Preferably, the 13 th pin of the TC787 chip is further connected with an output pulse adjusting capacitor; the output pulse adjusting capacitor is used for adjusting and controlling the width of an output pulse of the TC787 chip.
Preferably, the 17 th pin of the TC787 chip is connected to a positive power supply VDD, and the 3 rd pin is connected to a negative power supply Vss.
The utility model provides an active rectification control system of a network electricity energy storage workover rig, which comprises a synchronous rectification circuit, a drive control circuit and a filter circuit; the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switch units, and the drive control circuit is further composed of a voltage regulating circuit and a drive control chip. The active rectification control system of the grid power storage workover rig has the advantages of reliable performance and simple maintenance, can fully utilize the power distribution resources of the well field of an oil field, and can meet the working requirement of realizing the grid power storage workover rig through integrated control.
Drawings
Fig. 1 is a schematic diagram of a three-phase full-bridge topology structure formed by IGBT switch units in the synchronous rectification circuit of the present invention;
FIG. 2 is a schematic circuit diagram of the voltage regulation circuit of the present invention;
fig. 3 is a schematic circuit diagram of the driving control chip of the present invention;
fig. 4 is a schematic circuit diagram of the filter circuit of the present invention.
Detailed Description
The utility model provides a net electric energy storage workover rig active rectification control system, this net electric energy storage workover rig active rectification control system dependable performance, maintenance are simple, but make full use of oil field well site distribution resource can satisfy the work demand that realizes net electric energy storage workover rig through integrated control.
Example one
The utility model provides an active rectification control system of net electricity energy storage workover rig, it is specific, including synchronous rectifier circuit and drive control circuit two parts circuit constitutional unit in this net electricity energy storage workover rig active rectification control system. As shown in fig. 1, the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switching units; further preferably, each IGBT switching unit is further provided with an antiparallel zener diode. And a voltage transformer (not shown in fig. 1) is connected to the alternating current input side of the synchronous rectification circuit and used for mutually inducting the network electricity on the alternating current input side of the synchronous rectification circuit.
The drive control circuit is composed of a voltage regulating circuit and a drive control chip. Wherein the voltage regulating circuit is used for regulating the voltage according to a preset voltage (reference voltage U)I) And carrying out deviation regulation and control on the grid power derived by the voltage transformer. Specifically, as shown in fig. 2, the voltage regulation circuit includes a first comparator U1, a second comparator U2, and a third comparator U3; the positive input of the first comparator U1 is connected to ground via a first resistor R1, and the negative input of the first comparator U1 is connected to the output side of a voltage transformer, wherein the voltage value (U) derived by the voltage transformer is0) The synchronous rectification circuit is used for reflecting the grid voltage value of the alternating current input side of the synchronous rectification circuit; the positive input end of the second comparator U2 is grounded through a second resistor R2, and the negative input end of the second comparator U2 is connected with the reference voltage UIConnecting; the positive electrode input end of the third comparator U3 is grounded through a third resistor, and the negative electrode input end of the third comparator U3 is respectively connected with the output end of the first comparator U1 and the output end of the second comparator U2 through a deviation resistor R0; wherein the offset resistor R0 is used for adjusting U0And a reference voltage UIThe amplitude of the difference between the two signals is used for adjusting the sensitivity of the trigger signal of the drive control chip.
The driving control chip adopts a monolithic integrated circuit with a chip model TC787 as shown in FIG. 3; wherein, the 18 th pin (V) of the TC787 chipa) 2 nd pin (V)b) 1 st pin (V)c) The synchronous voltages of the A phase, the B phase and the C phase of the grid power are respectively connected; a 12 th pin (A), a 10 th pin (B) and an 8 th pin (C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin (-A), the 7 th pin (-B) and the 11 th pin (-C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm;pin 4 (V) of TC787 chiprI.e., the control voltage input value calculated by the voltage regulation circuit) is connected to the output of the third comparator U3.
The active rectification control system of the network power storage workover rig with the structure realizes the control of the IGBT switch unit in the synchronous rectification circuit through the time sequence control signal provided by the upper drive control circuit, thereby finally finishing the synchronous rectification effect.
Example two
The second embodiment describes all the technical features of the first embodiment, and specifically includes: the utility model provides an active rectification control system of net electricity energy storage workover rig, it is specific, including synchronous rectifier circuit and drive control circuit two parts circuit constitutional unit in this net electricity energy storage workover rig active rectification control system. As shown in fig. 1, the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switching units; further preferably, each IGBT switching unit is further provided with an antiparallel zener diode. And a voltage transformer (not shown in fig. 1) is connected to the alternating current input side of the synchronous rectification circuit and used for mutually inducting the network electricity on the alternating current input side of the synchronous rectification circuit.
The drive control circuit is composed of a voltage regulating circuit and a drive control chip. Wherein the voltage regulating circuit is used for regulating the voltage according to a preset voltage (reference voltage U)I) And carrying out deviation regulation and control on the grid power derived by the voltage transformer. Specifically, as shown in fig. 2, the voltage regulation circuit includes a first comparator U1, a second comparator U2, and a third comparator U3; the positive input of the first comparator U1 is connected to ground via a first resistor R1, and the negative input of the first comparator U1 is connected to the output side of a voltage transformer, wherein the voltage value (U) derived by the voltage transformer is0) The synchronous rectification circuit is used for reflecting the grid voltage value of the alternating current input side of the synchronous rectification circuit; the positive input end of the second comparator U2 is grounded through a second resistor R2, and the negative input end of the second comparator U2 is connected with the reference voltage UIConnecting; the positive input end of the third comparator U3 is grounded through a third resistor, and the negative input end of the third comparator U3 is grounded through a third resistorThe over-deviation resistor R0 is respectively connected with the output end of the first comparator U1 and the output end of the second comparator U2; wherein the offset resistor R0 is used for adjusting U0And a reference voltage UIThe amplitude of the difference between the two signals is used for adjusting the sensitivity of the trigger signal of the drive control chip.
The driving control chip adopts a monolithic integrated circuit with a chip model TC787 as shown in FIG. 3; wherein, the 18 th pin (V) of the TC787 chipa) 2 nd pin (V)b) 1 st pin (V)c) The synchronous voltages of the A phase, the B phase and the C phase of the grid power are respectively connected; a 12 th pin (A), a 10 th pin (B) and an 8 th pin (C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin (-A), the 7 th pin (-B) and the 11 th pin (-C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm; pin 4 (V) of TC787 chiprI.e., the control voltage input value calculated by the voltage regulation circuit) is connected to the output of the third comparator U3.
In addition, the second embodiment further discloses a circuit structure of the filter circuit. As shown in FIG. 4, the filter circuit is provided on the DC output side of the synchronous rectification circuit and includes a rectifier diode DLFilter resistor RLAnd a filter capacitor CLForming; wherein, the rectifier diode DLAnd a filter resistor RLSeries arrangement, filter capacitor CLAnd a filter resistor RLAre connected in parallel.
Specifically, the working process can be described as follows: filter capacitor CLAnd a filter resistor RLIn parallel, i.e. uRL＝uCL. Without incorporating filter capacitors CLBefore, the rectifier diode DLConducting in the positive half cycle and stopping in the negative half cycle; while incorporating a filter capacitor CLThen, after the current is turned on (during the gradual increase from zero), the rectifier diode DLIs conducted, and partial current flows to the filter capacitor C in addition to partial current flowing to the loadLAnd thus to the filter capacitor CLCharging; while ignoring the rectifier diode DLAt the filter capacitor CLAfter charging to the peak value, the filter capacitor CLStarting discharge and gradually dropping voltage; thus the filter capacitor CLPassing through a filter resistor R with a certain time constantLRegular discharges, i.e. uCLAnd (4) descending. Until the next positive half cycle, the rectifier diode DLIs turned on again, thereby enabling the filter capacitor CLThe voltage value becomes smooth.
EXAMPLE III
The third embodiment describes all the technical features of the first embodiment, and specifically includes: the utility model provides an active rectification control system of net electricity energy storage workover rig, it is specific, including synchronous rectifier circuit and drive control circuit two parts circuit constitutional unit in this net electricity energy storage workover rig active rectification control system. As shown in fig. 1, the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switching units; further preferably, each IGBT switching unit is further provided with an antiparallel zener diode. And a voltage transformer (not shown in fig. 1) is connected to the alternating current input side of the synchronous rectification circuit and used for mutually inducting the network electricity on the alternating current input side of the synchronous rectification circuit.
The drive control circuit is composed of a voltage regulating circuit and a drive control chip. Wherein the voltage regulating circuit is used for regulating the voltage according to a preset voltage (reference voltage U)I) And carrying out deviation regulation and control on the grid power derived by the voltage transformer. Specifically, as shown in fig. 2, the voltage regulation circuit includes a first comparator U1, a second comparator U2, and a third comparator U3; the positive input of the first comparator U1 is connected to ground via a first resistor R1, and the negative input of the first comparator U1 is connected to the output side of a voltage transformer, wherein the voltage value (U) derived by the voltage transformer is0) The synchronous rectification circuit is used for reflecting the grid voltage value of the alternating current input side of the synchronous rectification circuit; the positive input end of the second comparator U2 is grounded through a second resistor R2, and the negative input end of the second comparator U2 is connected with the reference voltage UIConnecting; the positive input end of the third comparator U3 is grounded through a third resistor, and the negative input end of the third comparator U3 is respectively connected with the first ratio through a deviation resistor R0The output end of the comparator U1 is connected with the output end of the second comparator U2; wherein the offset resistor R0 is used for adjusting U0And a reference voltage UIThe amplitude of the difference between the two signals is used for adjusting the sensitivity of the trigger signal of the drive control chip.
The driving control chip adopts a monolithic integrated circuit with a chip model TC787 as shown in FIG. 3; wherein, the 18 th pin (V) of the TC787 chipa) 2 nd pin (V)b) 1 st pin (V)c) The synchronous voltages of the A phase, the B phase and the C phase of the grid power are respectively connected; a 12 th pin (A), a 10 th pin (B) and an 8 th pin (C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin (-A), the 7 th pin (-B) and the 11 th pin (-C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm; pin 4 (V) of TC787 chiprI.e., the control voltage input value calculated by the voltage regulation circuit) is connected to the output of the third comparator U3.
In addition, the third embodiment further defines the voltage regulating circuit as follows. Specifically, as shown in fig. 2, the first comparator U1, the second comparator U2, and the third comparator U3 in the voltage regulation circuit are further provided with a first feedback resistor R4, a second feedback resistor R5, and a third feedback resistor R6, respectively. The first feedback resistor R4 is arranged between the negative input end and the output end of the first comparator; the second feedback resistor R5 is arranged between the negative input end and the output end of the second comparator; a third feedback resistor R6 is provided between the negative input terminal and the output terminal of the third comparator. The first feedback resistor R4, the second feedback resistor R5 and the third feedback resistor R6 are all used for eliminating return difference, and therefore the comparison accuracy of the first comparator U1, the second comparator U2 and the third comparator U3 is improved; in a preferred embodiment of the present invention, current limiting resistors R7, R8, and R9 are further provided in the output end sides of the first comparator U1, the second comparator U2, and the third comparator U3.
Example four
The fourth embodiment describes all the technical features of the first embodiment, and specifically includes: the utility model provides an active rectification control system of net electricity energy storage workover rig, it is specific, including synchronous rectifier circuit and drive control circuit two parts circuit constitutional unit in this net electricity energy storage workover rig active rectification control system. As shown in fig. 1, the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switching units; further preferably, each IGBT switching unit is further provided with an antiparallel zener diode. And a voltage transformer (not shown in fig. 1) is connected to the alternating current input side of the synchronous rectification circuit and used for mutually inducting the network electricity on the alternating current input side of the synchronous rectification circuit.
The drive control circuit is composed of a voltage regulating circuit and a drive control chip. Wherein the voltage regulating circuit is used for regulating the voltage according to a preset voltage (reference voltage U)I) And carrying out deviation regulation and control on the grid power derived by the voltage transformer. Specifically, as shown in fig. 2, the voltage regulation circuit includes a first comparator U1, a second comparator U2, and a third comparator U3; the positive input of the first comparator U1 is connected to ground via a first resistor R1, and the negative input of the first comparator U1 is connected to the output side of a voltage transformer, wherein the voltage value (U) derived by the voltage transformer is0) The synchronous rectification circuit is used for reflecting the grid voltage value of the alternating current input side of the synchronous rectification circuit; the positive input end of the second comparator U2 is grounded through a second resistor R2, and the negative input end of the second comparator U2 is connected with the reference voltage UIConnecting; the positive electrode input end of the third comparator U3 is grounded through a third resistor, and the negative electrode input end of the third comparator U3 is respectively connected with the output end of the first comparator U1 and the output end of the second comparator U2 through a deviation resistor R0; wherein the offset resistor R0 is used for adjusting U0And a reference voltage UIThe amplitude of the difference between the two signals is used for adjusting the sensitivity of the trigger signal of the drive control chip.
The driving control chip adopts a monolithic integrated circuit with a chip model TC787 as shown in FIG. 3; wherein, the 18 th pin (V) of the TC787 chipa) 2 nd pin (V)b) 1 st pin (V)c) Synchronous voltage respectively connected with A phase, B phase and C phase of network powerConnecting; a 12 th pin (A), a 10 th pin (B) and an 8 th pin (C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin (-A), the 7 th pin (-B) and the 11 th pin (-C) of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm; pin 4 (V) of TC787 chiprI.e., the control voltage input value calculated by the voltage regulation circuit) is connected to the output of the third comparator U3.
In addition, the fourth embodiment also provides the following supplementary explanation for the driving control chip. Specifically, as shown in fig. 3, the 6 th pin (Pc) of the TC787 chip is used to adjust the operating mode of the TC787 chip; the operating mode of a particular TC787 chip may be described as: when the 6 th pin of the TC787 chip is connected to a high level, the working mode of the TC787 chip is double narrow pulse output; when the 6 th pin of the TC787 chip is connected to a low level, the operation mode of the TC787 chip is a single-width pulse output. The 13 th pin (Cx) of the C787 chip is also connected with an output pulse adjusting capacitor; the output pulse adjusting capacitor is used for regulating and controlling the width of an output pulse of the TC787 chip; when the output pulse adjusting capacitor is larger, the width of the output pulse of the TC787 chip is wider. And, the 17 th pin of the TC787 chip is connected to a positive power supply VDD, and the 3 rd pin is connected to a negative power supply Vss.
The utility model provides an active rectification control system of a network electricity energy storage workover rig, which comprises a synchronous rectification circuit, a drive control circuit and a filter circuit; the synchronous rectification circuit is a three-phase full-bridge topology structure formed by IGBT switch units, and the drive control circuit is further composed of a voltage regulating circuit and a drive control chip. The active rectification control system of the grid power storage workover rig has the advantages of reliable performance and simple maintenance, can fully utilize the power distribution resources of the well field of an oil field, and can meet the working requirement of realizing the grid power storage workover rig through integrated control.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides an active rectification control system of net electric energy storage workover rig which characterized in that, including:
a synchronous rectification circuit and a drive control circuit;
the synchronous rectification circuit is of a three-phase full-bridge topology structure formed by IGBT (insulated gate bipolar transistor) switching units, and the alternating current input side of the synchronous rectification circuit is also connected with a voltage transformer;
the drive control circuit consists of a voltage regulating circuit and a drive control chip; the voltage regulating circuit comprises a first comparator U1, a second comparator U2 and a third comparator U3; the positive pole input end of the first comparator U1 is grounded through a first resistor R1, and the negative pole input end of the first comparator U1 is connected with the output side of the voltage transformer; the positive input end of the second comparator U2 is grounded through a second resistor R2, and the negative input end of the second comparator U2 is connected with the reference voltage UIConnecting; the positive electrode input end of the third comparator U3 is grounded through a third resistor, and the negative electrode input end of the third comparator U3 is respectively connected with the output end of the first comparator U1 and the output end of the second comparator U2 through a deviation resistor R0; the driving control chip adopts a single-chip integrated circuit with the model number of TC 787; the 18 th pin, the 2 nd pin and the 1 st pin of the TC787 chip are respectively connected with the synchronous voltages of the A phase, the B phase and the C phase of the network power supply; the 12 th pin, the 10 th pin and the 8 th pin of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the upper half bridge arm; the 9 th pin, the 7 th pin and the 11 th pin of the TC787 chip are respectively connected with the control ends of the A, B, C-phase IGBT switch units of the lower half bridge arm; the 4 th pin of the TC787 chip is connected to the output of a third comparator U3.
2. The active rectification control system of the grid electricity storage workover rig according to claim 1, further comprising: a filter circuit; the filter circuit is arranged on the DC output side of the synchronous rectification circuit and is composed of a rectifier diode DLFilter resistor RLAnd a filter capacitor CLForming; wherein, the rectifier diode DLAnd a filter resistor RLSeries arrangement, filter capacitor CLAnd a filter resistor RLAre connected in parallel.
3. The active rectification control system of the grid power storage workover rig according to claim 1, wherein a first feedback resistor R4 is further connected between the negative input end and the output end of the first comparator.
4. The active rectification control system of the grid electricity storage workover rig according to claim 1, wherein a second feedback resistor R5 is further connected between the negative input end and the output end of the second comparator.
5. The active rectification control system of the grid electricity storage workover rig according to claim 1, wherein a third feedback resistor R6 is further connected between the negative input end and the output end of the third comparator.
6. The active rectification control system of a grid electricity storage workover rig according to claim 1, wherein the 6 th pin of the TC787 chip is used for adjusting the working mode of the TC787 chip; when the 6 th pin of the TC787 chip is connected to a high level, the working mode of the TC787 chip is double narrow pulse output; when the 6 th pin of the TC787 chip is connected to a low level, the operation mode of the TC787 chip is a single-width pulse output.
7. The active rectification control system of the grid power storage workover rig according to claim 1, wherein the 13 th pin of the TC787 chip is further connected with an output pulse regulation capacitor; the output pulse adjusting capacitor is used for adjusting and controlling the width of an output pulse of the TC787 chip.
8. The active rectification control system of the grid electricity storage workover rig according to claim 1, wherein a 17 th pin of the TC787 chip is connected with a positive power supply VDD, and a 3 rd pin is connected with a negative power supply Vss.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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