CN212486125U - Single-phase alternating current double-power-supply parallel connection self-adaptive synchronous controller - Google Patents
Single-phase alternating current double-power-supply parallel connection self-adaptive synchronous controller Download PDFInfo
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- CN212486125U CN212486125U CN202021596048.0U CN202021596048U CN212486125U CN 212486125 U CN212486125 U CN 212486125U CN 202021596048 U CN202021596048 U CN 202021596048U CN 212486125 U CN212486125 U CN 212486125U
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Abstract
The utility model discloses a single-phase alternating current dual power parallel connection self-adaptive synchronous controller, which comprises a main control board, and a pulse generator, a synchronous voltage selector, a power module, an interlocking door, a first isolation driving module, a second isolation driving module, a first IGBT isolation door module and a second IGBT isolation door module which are arranged on the main control board; the pulse generator is connected with the synchronous voltage selector, the synchronous voltage selector is connected with the interlocking gate, and the interlocking gate is respectively connected with the first isolation driving module and the second isolation driving module; the first isolation driving module is connected with the control end of the first IGBT isolation gate module; the second isolation driving module is connected with the control end of the second IGBT isolation gate module; the live wire input end of the first IGBT isolation gate module is connected with L1, and the zero line input end of the first IGBT isolation gate module is connected with N1; and the live wire input end of the second IGBT isolation gate module is connected with L2, and the zero wire input end of the second IGBT isolation gate module is connected with N2. The utility model discloses can realize the fast switch over.
Description
Technical Field
The utility model belongs to the technical field of industry alternating current dual supply, concretely relates to single phase alternating current dual supply meets self-adaptation synchronous controller.
Background
In order to improve the power supply reliability, a double-circuit power supply is often adopted, two circuits of power supplies from different systems are easily obtained in an industrial place, however, two circuits of alternating current cannot be simply connected together in parallel, if a change-over switch is adopted, in order to ensure arc extinguishing, the action time of a mechanism is added, the power failure clearance is more than 0.5 second, the time interval can lead a plurality of load devices to be powered off and then powered on again, the working state cannot be continuously kept, and the mutual standby effect of double power supplies cannot be realized.
Therefore, it is necessary to develop a new single-phase ac dual-power parallel adaptive synchronous controller.
Disclosure of Invention
The utility model aims at providing a single phase alternating current dual supply meets self-adaptation synchronous controller can realize the fast switch-over between the dual supply.
The utility model discloses a single-phase alternating current dual supply parallel connection self-adaptation synchronous controller, including the main control board to and impulse generator, synchronous voltage selector, power module, interlock door, first isolation drive module, second isolation drive module, first IGBT isolation door module and second IGBT isolation door module that set up on the main control board;
the pulse generator is connected with a synchronous voltage selector, the synchronous voltage selector is connected with an interlocking gate, and the interlocking gate is respectively connected with the first isolation driving module and the second isolation driving module;
the first isolation driving module is connected with the control end of the first IGBT isolation gate module;
the second isolation driving module is connected with the control end of the second IGBT isolation gate module;
the synchronous voltage selector is respectively connected with the first path of input power supply and the second path of input power supply, and is used for detecting whether the first path of input power supply or the second path of input power supply is electrified, if the first path of input power supply is electrified, the first path of input power supply is selected, otherwise, the second path of input power supply is selected, and when one path of power supply is selected, synchronous pulses are output to the pulse generator; the synchronous voltage selector adopts two output ports to be connected to an interlocking gate to perform interlocking confirmation again;
the power supply module acquires power from the first input power supply or the second input power supply and supplies power to all loops on the main control board;
the pulse generator is used for generating control pulses which can be synchronized by the synchronization pulses, and after synchronization, the frequency of the control pulses is consistent with that of the synchronization pulses;
the interlocking gate is used for enabling the 2-path output of the synchronous voltage selector and the 2 isolation driving modules to keep only one channel to be connected and locking the other channel when one channel is connected;
the first isolation driving module is used for providing a first driving signal for the first IGBT isolation gate module, and the first driving signal is synchronous with the selected power supply frequency;
the second isolation driving module is used for providing a second driving signal for the second IGBT isolation gate module, and the second driving signal is synchronous with the selected power supply frequency;
the live wire input end of the first IGBT isolation gate module is connected with a live wire L1 of the first input power supply, and the zero line input end of the first IGBT isolation gate module is connected with a zero line N1 of the first input power supply;
the live wire input end of the second IGBT isolation gate module is connected with a live wire L2 of a second path of input power supply, and the zero line input end of the second IGBT isolation gate module is connected with a zero line N2 of the second path of input power supply;
the live wire output end of the first IGBT isolation gate module and the live wire output end of the second IGBT isolation gate module are connected together in parallel;
and the zero line output end of the first IGBT isolation gate module and the zero line output end of the second IGBT isolation gate module are connected together in parallel.
And the two ends of the resistor R are respectively connected with the zero line N1 of the first path of input power supply and the zero line N2 of the second path of input power supply.
The power supply module comprises a power supply unit, a diode D1, a diode D2 and a capacitor C, wherein the power supply unit is connected with the cathode of a diode D1, the anode of the diode D1 is connected with the live wire L1 of the first input power supply, the power supply unit is connected with the cathode of a diode D2, the anode of a diode D2 is connected with the live wire L2 of the second input power supply, one end of the capacitor C is connected with the connection points of the diode D1, the diode D2 and the power supply unit, and the other end of the capacitor C is connected with the power supply unit and the zero wire N2 of the second input power supply; the power supply module obtains power supply from the first path of input power supply or the second path of input power supply, when obtaining power supply from the first path of input power supply, half-wave rectification and isolation are carried out through the diode D1, power supply is provided for all loops on the main control board after being filtered by the capacitor C, when obtaining power supply from the second path of input power supply, half-wave rectification and isolation are carried out through the diode D2, power supply is provided for all loops on the main control board after being filtered by the capacitor C, when the first path of input power supply and the second path of input power supply are electrified, power supply is obtained from the first path of input power supply and the second path of input power supply, and due to the isolation effect of the diode D1 and the diode D2, the two paths of power supply can work normally.
Further, the pulse generator adopts a 50Hz oscillator.
The utility model has the advantages of it is following: through the use of the IGBT high-voltage-resistance and high-power thyristor electronic switch and the adoption of power supply synchronous pulse drive, the double-circuit alternating current switching time is greatly shortened, the alternating current switching power failure time can be controlled within 40 milliseconds, namely within two cycles, so that the requirement of most loads on a power supply can be met, a common single power supply load can conveniently enjoy dual power supply, and the reliability of equipment operation is improved.
Drawings
Fig. 1 is a schematic block diagram of the single-phase ac dual power parallel adaptive synchronous controller according to the present embodiment;
FIG. 2 is a schematic block diagram of a power module according to the present embodiment;
in the figure: 1. the device comprises a main control board, 2, a pulse generator, 3, a synchronous voltage selector, 4, a power module, 5, an interlocking gate, 6, a first isolation driving module, 7, a second isolation driving module, 8, a first IGBT isolation gate module, 9 and a second IGBT isolation gate module.
Detailed Description
As shown in fig. 1, in this embodiment, a single-phase ac dual power parallel connection adaptive synchronous controller includes a main control board 1, and a pulse generator 2, a synchronous voltage selector 3, a power module 4, an interlock gate 5, a first isolation driving module 6, a second isolation driving module 7, a first IGBT isolation gate module 8, a second IGBT isolation gate module 9, and a resistor R that are disposed on the main control board 1.
In this embodiment, the pulse generator 2 is connected to a synchronous voltage selector 3, the synchronous voltage selector 3 is connected to an interlock gate 5, and the interlock gate 5 is connected to a first isolation driving module 6 and a second isolation driving module 7 respectively; the first isolation driving module 6 is connected with the control end of the first IGBT isolation gate module 8; and the second isolation driving module 7 is connected with the control end of the second IGBT isolation gate module 9.
In this embodiment, the synchronous voltage selector 3 is respectively connected to the first input power supply and the second input power supply, the synchronous voltage selector 3 is configured to detect whether the first input power supply or the second input power supply is charged, select the first input power supply if the first input power supply is charged, otherwise select the second input power supply, and output a synchronous pulse to the pulse generator 2 when one of the input power supplies is selected; the synchronous voltage selector 3 adopts two output ports to be connected to the interlocking gate 5 to perform interlocking confirmation again;
in this embodiment, the power module 4 obtains power from the first input power or the second input power, and provides power supply for all loops on the main control board 1; the method specifically comprises the following steps:
as shown in fig. 2, the power module 4 includes a power unit, a diode D1, a diode D2, and a capacitor C, where the power unit is connected to a cathode of the diode D1, an anode of the diode D1 is connected to a live line L1 of the first input power, the power unit is connected to a cathode of the diode D2, an anode of the diode D2 is connected to a live line L2 of the second input power, one end of the capacitor C is connected to a connection point of the diode D1, the diode D2, and the power unit, and the other end of the capacitor C is connected to the power unit and a neutral line N2 of the second input power; the power module 4 obtains power from the first path of input power or the second path of input power, when obtaining power from the first path of input power, half-wave rectification and isolation are performed through the diode D1, power supply is provided for all loops on the main control board 1 after filtering through the capacitor C, when obtaining power from the second path of input power, half-wave rectification and isolation are performed through the diode D2, power supply is provided for all loops on the main control board 1 after filtering through the capacitor C, when the first path of input power and the second path of input power are electrified, power is obtained from the first path of input power and the second path of input power at the same time, and due to the isolation effect of the diode D1 and the diode D2, the power can work normally.
In this embodiment, the synchronous voltage selector 3 is configured to select a first input power source or a second input power source, and output a synchronous pulse to the pulse generator 2 when one of the input power sources is selected. In this embodiment, if the first input power supply is charged, the first input power supply is preferentially selected, and if the first input power supply is not charged and the second input power supply is charged, the second input power supply is selected.
The pulse generator 2 is used to generate control pulses. In the embodiment, the device is used for generating control pulses of about 50Hz, the control pulses can be synchronized by the synchronous pulses, and after synchronization, the frequency of the control pulses is consistent with that of the synchronous pulses;
the interlocking gate 5 is used for enabling the 2-path output of the synchronous voltage selector 3 and the 2 isolation driving modules to keep only one channel to be switched on, namely, when one channel is switched on, the other channel is locked; so as to ensure that only one path of isolation driving module outputs driving signals. In this embodiment, the interlock gate 5 adopts a digital logic circuit, and only 1 output is ensured.
In this embodiment, the first isolation driving module 6 is configured to provide a first driving signal to the first IGBT isolation gate module 8, where the first driving signal is synchronized with the selected power frequency; so as to ensure that the signal output by the first IGBT isolation gate module 8 is synchronous with the power supply and is not distorted.
In this embodiment, the second isolation driving module 7 is configured to provide a second driving signal to the second IGBT isolation gate module 9, where the second driving signal is synchronized with the selected power frequency; so as to ensure that the signal output by the second IGBT isolation gate module 9 is synchronous with the power supply and is not distorted.
In this embodiment, the live wire input end of the first IGBT isolation gate module 8 is connected to the live wire L1 of the first input power, and the zero line input end of the first IGBT isolation gate module 8 is connected to the zero line N1 of the first input power. The first IGBT isolation gate module 8 is an IGBT electronic gate switch of the first input power supply.
In this embodiment, the live wire input end of the second IGBT isolation gate module 9 is connected to the live wire L2 of the second input power supply, and the zero wire input end of the second IGBT isolation gate module 9 is connected to the zero wire N2 of the second input power supply. The second IGBT isolation gate module 9 is an IGBT electronic gate switch of the second input power supply.
In this embodiment, the live wire output end of the first IGBT isolation gate module 8 and the live wire output end of the second IGBT isolation gate module 9 are connected in parallel (i.e., the live wire output end L). And the zero line output end of the first IGBT isolation gate module 8 and the zero line output end of the second IGBT isolation gate module 9 are connected together in parallel (namely the zero line output end N). Because only one IGBT isolation gate module is conducted, only one path of power supply is output, and the problem of short circuit does not exist.
In this embodiment, two ends of the resistor R are respectively connected with the zero line N1 of the first input power supply and the zero line N2 of the second input power supply; and the resistor R is an isolation resistor and is used for limiting current so as to prevent the zero line from being burnt when the ground potentials of the two power supplies deviate.
In this embodiment, the pulse generator 2 employs a 50Hz oscillator. The pulse generator 2 has a synchronizing terminal which is synchronized upon input of a synchronizing signal.
The working principle of the embodiment is as follows: if the first input power supply (L1, N1) loses power, the synchronous voltage selector 3 can immediately make a judgment, the second input power supply (L2, N2) is used, the synchronous pulse generator 3 sends out a pulse signal, the interlocking door 5 can immediately lock the first isolation driving module 6, the first IGBT isolation door module 8 can immediately cut off, the interlocking door 5 can immediately open a switch of the second isolation driving module 7 to output an isolation driving signal to drive the second IGBT isolation door module 9, and the second IGBT isolation door module 9 normally outputs voltage under the triggering of the synchronous signal. The pulse switching interval is 20mS, and during the period, the two power supplies pass through zero passage twice, so that the two power supplies are prevented from short circuit, and the two power supplies are switched in the shortest time.
In this embodiment, the single-phase ac refers to domestic 50Hz, 220V mains. The double power supplies refer to 2 paths of alternating current power supplies from different systems, and have different voltages, frequencies and initial phase angles. The self-adaptation means that as long as one of the power supplies is normal, or both the power supplies are normal, 220V and 50Hz alternating current power supplies can be output normally. The synchronization means that the pulse generator generates about 50Hz pulses, and the pulses need to be synchronized by two power supplies to drive the IGBT electronic gate switch.
Claims (4)
1. The utility model provides a single phase alternating current duplicate supply meets self-adaptation synchronous controller which characterized in that: the device comprises a main control board (1), and a pulse generator (2), a synchronous voltage selector (3), a power module (4), an interlocking gate (5), a first isolation driving module (6), a second isolation driving module (7), a first IGBT isolation gate module (8) and a second IGBT isolation gate module (9) which are arranged on the main control board (1);
the pulse generator (2) is connected with a synchronous voltage selector (3), the synchronous voltage selector (3) is connected with an interlocking gate (5), and the interlocking gate (5) is respectively connected with a first isolation driving module (6) and a second isolation driving module (7);
the first isolation driving module (6) is connected with the control end of the first IGBT isolation gate module (8);
the second isolation driving module (7) is connected with the control end of the second IGBT isolation gate module (9);
the synchronous voltage selector (3) is respectively connected with the first path of input power supply and the second path of input power supply, the synchronous voltage selector (3) is used for detecting whether the first path of input power supply or the second path of input power supply is electrified, if the first path of input power supply is electrified, the first path of input power supply is selected, otherwise, the second path of input power supply is selected, and when one path of power supply is selected, synchronous pulses are output to the pulse generator (2); the synchronous voltage selector (3) adopts two output ports to be connected to the interlocking gate (5) for interlocking confirmation again;
the power supply module (4) acquires power from the first input power supply or the second input power supply and supplies power supply to all loops on the main control board (1);
the pulse generator (2) is used for generating control pulses which can be synchronized by the synchronization pulses, and after synchronization, the frequency of the control pulses is consistent with that of the synchronization pulses;
the interlocking gate (5) is used for enabling the 2-path output of the synchronous voltage selector (3) and the 2 isolation driving modules to be kept to be connected with only one channel;
the first isolation driving module (6) is used for providing a first driving signal for the first IGBT isolation gate module (8), and the first driving signal is synchronous with the selected power supply frequency;
the second isolation driving module (7) is used for providing a second driving signal for the second IGBT isolation gate module (9), and the second driving signal is synchronous with the selected power supply frequency;
the live wire input end of the first IGBT isolation gate module (8) is connected with a live wire L1 of the first input power supply, and the zero line input end of the first IGBT isolation gate module (8) is connected with a zero line N1 of the first input power supply;
the live wire input end of the second IGBT isolation gate module (9) is connected with a live wire L2 of the second input power supply, and the zero line input end of the second IGBT isolation gate module (9) is connected with a zero line N2 of the second input power supply;
the live wire output end of the first IGBT isolation gate module (8) and the live wire output end of the second IGBT isolation gate module (9) are connected together in parallel;
and the zero line output end of the first IGBT isolation gate module (8) and the zero line output end of the second IGBT isolation gate module (9) are connected together in parallel.
2. The single-phase alternating-current dual-power parallel connection adaptive synchronous controller according to claim 1, characterized in that: the power supply control circuit further comprises a resistor R arranged on the main control board (1), and two ends of the resistor R are respectively connected with the zero line N1 of the first path of input power supply and the zero line N2 of the second path of input power supply.
3. The single-phase alternating-current dual-power parallel connection adaptive synchronous controller according to claim 2, characterized in that: the power supply module (4) comprises a power supply unit, a diode D1, a diode D2 and a capacitor C, wherein the power supply unit is connected with the cathode of the diode D1, the anode of the diode D1 is connected with the live wire L1 of the first input power supply, the power supply unit is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the live wire L2 of the second input power supply, one end of the capacitor C is connected with the connection points of the diode D1, the diode D2 and the power supply unit, and the other end of the capacitor C is connected with the power supply unit and the neutral wire N2 of the second input power supply; the power supply module (4) obtains power supply from the first path of input power supply or the second path of input power supply, when obtaining power supply from the first path of input power supply, half-wave rectification and isolation are carried out through the diode D1, power supply is provided for all loops on the main control board (1) after filtering through the capacitor C, when obtaining power supply from the second path of input power supply, half-wave rectification and isolation are carried out through the diode D2, power supply is provided for all loops on the main control board (1) after filtering through the capacitor C, when the first path of input power supply and the second path of input power supply are electrified, power supply is obtained from the first path of input power supply and the second path of input power supply, and due to the isolation effect of the diode D1 and the diode D2, the power supply can work normally.
4. The single-phase alternating-current dual-power-supply parallel connection adaptive synchronous controller according to any one of claims 1 to 3, characterized in that: the pulse generator (2) adopts a 50Hz oscillator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021596048.0U CN212486125U (en) | 2020-08-04 | 2020-08-04 | Single-phase alternating current double-power-supply parallel connection self-adaptive synchronous controller |
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| CN202021596048.0U CN212486125U (en) | 2020-08-04 | 2020-08-04 | Single-phase alternating current double-power-supply parallel connection self-adaptive synchronous controller |
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Effective date of registration: 20231205 Address after: 510700 3 / F, 4 / F, 5 / F, building J1 and 3 / F, building J3, No. 11, Kexiang Road, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Southern Power Grid Energy Storage Co.,Ltd. Western Maintenance and Testing Branch Address before: 562400 No.1 Beijing Road, Jushan street, Xingyi City, Qianxinan Buyi and Miao Autonomous Prefecture, Guizhou Province Patentee before: China Southern power grid peak load regulation and frequency modulation power generation Co.,Ltd. Western maintenance test branch |