CN110739730A - Connection control device and method for automatically switching connection relation and power supply system - Google Patents
Connection control device and method for automatically switching connection relation and power supply system Download PDFInfo
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- CN110739730A CN110739730A CN201911168741.XA CN201911168741A CN110739730A CN 110739730 A CN110739730 A CN 110739730A CN 201911168741 A CN201911168741 A CN 201911168741A CN 110739730 A CN110739730 A CN 110739730A
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
The invention discloses connection control devices and methods for automatically switching connection relations and a power supply system, wherein the devices comprise a detection module, a switch module, a controller and a end, the detection module is connected between a direct current bus of a converter and a power supply in parallel and used for detecting the th voltage between the th line and the second line of the direct current bus of the converter and the second voltage between the th pole and the second pole of the power supply, the switch module is used for changing the connection relation between the direct current bus and the power supply by changing the conduction state of a switch, the end of the controller is connected with the detection module, the end of the controller is connected with the switch module and used for controlling the conduction state of the switch in the switch module according to the th voltage and the second voltage and further controlling the connection relation between the direct current bus and the power supply.
Description
Technical Field
The invention relates to the technical field of electronic power, in particular to connection control devices and methods for automatically switching connection relations and a power supply system.
Background
With the opening of a direct current bus of a current transformer, the current transformer is taken as a core, more and more direct current power supply systems can be accessed, such as a photovoltaic solar panel, a wind power generation device, an energy storage system, other current transformers and the like, fig. 1 is a structural diagram of the existing power supply system, but manufacturers of various direct current power supply systems are different, so that the definition of a direct current interface is not unified , when the whole system is subjected to field installation and combined debugging, in order to avoid the situation that a positive electrode and a negative electrode are short-circuited when the power supplies are connected, fig. 2 is a structural diagram of an access device of the existing power supply system, a large amount of experienced technicians are required to guide and detect during installation of the existing structure, the positive electrode and the negative electrode of the current transformer are confirmed to be corresponding to the positive electrode and the negative electrode of the interface of other direct current systems, namely the.
Aiming at the problems of long wiring time and low working efficiency caused by manually judging the positive and negative electrodes of the circuit in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides connection control devices and methods for automatically switching connection relations and a power supply system, and aims to solve the problems that wiring time is long and working efficiency is low due to the fact that the positive and negative poles of a circuit are judged manually in the prior art.
In order to solve the above technical problem, the present invention provides connection control devices for automatically switching connection relations, wherein the device comprises:
the detection module is connected with the switch module in parallel and arranged between a direct current bus and a power supply of the converter and is used for detecting a th voltage between an th line of the direct current bus of the converter and a second line of the direct current bus and a second voltage between a th pole and a second pole of the power supply;
the switch module is used for changing the connection relation between the direct current bus and the power supply by changing the conduction state of the switch;
and the end of the controller is connected with the detection module, and the end of the controller is connected with the switch module and is used for controlling the conducting state of a switch in the switch module according to the th voltage and the second voltage so as to control the connection relation between the direct current bus and the power supply.
, the detection module includes:
the detection unit is arranged between a th line of a direct current bus and a second line of the direct current bus of the converter and is used for detecting th voltage between a th line of the direct current bus and the second line of the direct current bus;
and the second detection unit is arranged between the th pole of the power supply and the second pole of the power supply and is used for detecting a second voltage between the th pole of the power supply and the second pole of the power supply.
In embodiments, the switch module includes:
selection switch, the end is connected with the line of the DC bus, the second end is connected with the pole of the power supply or the second pole of the power supply, for realizing the connection between the line of the DC bus and the pole of the power supply or the pole of the power supply, and/or,
and a second selector switch, wherein the th end is connected with the second line of the direct current bus, the second end is connected with the second pole of the power supply or the th pole of the power supply, and the second selector switch is used for realizing the connection between the th line of the direct current bus and the second pole of the power supply or the th pole of the power supply.
In embodiments, the switch module includes:
a third selector switch, wherein the th end is connected with the th pole of the power supply, the th end is connected with the th pole of the direct current bus or the second line of the direct current bus, and is used for realizing the connection of the th pole of the power supply with the th pole of the direct current bus or the second line of the direct current bus , and/or,
and a fourth selector switch, wherein the th end is connected with the second pole of the power supply, the second end is connected with the second line of the direct current bus or the th line of the direct current bus, and the fourth selector switch is used for realizing selective connection between the second pole of the power supply and the second line of the direct current bus or the th line of the direct current bus.
In embodiments, the switch module includes:
an switch, disposed between the th line of the DC bus and the th pole of the power supply, for connecting the th line of the DC bus with the th pole of the power supply;
the second switch is arranged between the th line of the direct current bus and the second pole of the power supply and is used for realizing the connection between the th line of the direct current bus and the second pole of the power supply;
the third switch is arranged between the second line of the direct current bus and the second pole of the power supply and is used for realizing the connection between the second line of the direct current bus and the second pole of the power supply;
and the fourth switch is arranged between the second line of the direct current bus and the th pole of the power supply and is used for realizing the connection between the second line of the direct current bus and the th pole of the power supply.
, the controller includes:
an control unit for controlling the DC bus line to be connected with the th pole of the power supply and the DC bus second line to be connected with the second pole of the power supply when the th voltage is in the same direction as the second voltage;
and the second control unit is used for controlling the th line of the direct current bus to be connected with the second pole of the power supply when the th voltage is different from the second voltage in direction, and the second line of the direct current bus is connected with the th pole of the power supply.
The invention also provides power supply systems, which comprise at least connection control devices.
The invention also provides connection control methods for automatically switching connection relations, wherein the method comprises the following steps:
acquiring a th voltage between a th line of a direct current bus of the converter and a second line of the direct current bus, and a second voltage between a th pole of a power supply and a second pole of the power supply;
and controlling the connection relation between the direct current bus and the power supply according to the th voltage and the second voltage.
, controlling the connection between the DC bus and the power source according to the th voltage and the second voltage includes:
judging whether the th voltage and the second voltage are in the same direction or not;
if the current is the same as the current, controlling an th line of the direct current bus to be connected with a th pole of a power supply, and controlling a second line of the direct current bus to be connected with a second pole of the power supply;
if not, the second line of the DC bus is controlled to be connected with the second pole of the power supply, and the second line of the DC bus is controlled to be connected with the th pole of the power supply.
In , the method for controlling the connection of the line of the dc bus to the th pole of the power supply and the connection of the second line of the dc bus to the second pole of the power supply comprises:
a second end of the th selection switch is controlled to be connected with the th pole of the power supply, and a second end of the second selection switch is connected with the second pole of the power supply;
control the direct current busbar line and be connected with the power second pole, direct current busbar second line and power utmost point is connected, includes:
the second end of the th selection switch is connected with the second pole of the power supply, and the second end of the second selection switch is connected with the th pole of the power supply;
the end of the selective switch is connected with the th wire of the direct current bus, the second end is connected with the th pole or the second pole of the power supply, the end of the second selective switch is connected with the second wire of the direct current bus, and the second end is connected with the second pole of the power supply or the th pole of the power supply.
In , the method for controlling the connection of the line of the dc bus to the th pole of the power supply and the connection of the second line of the dc bus to the second pole of the power supply comprises:
the second end of the third selector switch is controlled to be connected with the th line of the direct current bus, and the second end of the fourth selector switch is connected with the second line of the direct current bus;
control the direct current busbar line and be connected with the power second pole, direct current busbar second line and power utmost point is connected, includes:
the second end of the third selector switch is controlled to be connected with the second line of the direct current bus, and the second end of the fourth selector switch is connected with the line of the direct current bus;
the th end of the third selector switch is connected with the th pole of the power supply, the th end of the third selector switch is connected with the th pole of the direct current bus or the second line of the direct current bus, the th end of the fourth selector switch is connected with the second pole of the power supply, and the th end of the fourth selector switch is connected with the second line of the direct current bus or the th line of the direct current bus.
In , the method for controlling the connection of the line of the dc bus to the th pole of the power supply and the connection of the second line of the dc bus to the second pole of the power supply comprises:
controlling the th switch and the third switch to be turned on, and the second switch and the fourth switch to be turned off;
control the direct current busbar line and be connected with the power second pole, direct current busbar second line and power utmost point is connected, includes:
controlling the th switch and the third switch to be switched off, and controlling the second switch and the fourth switch to be switched on;
the th switch is arranged between the th line of the direct current bus and the th pole of the power supply, the second switch is arranged between the th line of the direct current bus and the second pole of the power supply, the third switch is arranged between the second line of the direct current bus and the second pole of the power supply, and the fourth switch is arranged between the second line of the direct current bus and the th pole of the power supply.
The present invention also provides computer-readable storage media having stored thereon a computer program which, when executed by a processor, performs the above-described method.
By applying the technical scheme of the invention, according to the voltage between the th line of the direct current bus of the converter and the second line of the direct current bus and the voltage between the th pole and the second pole of the power supply, the corresponding connection relation between the th line of the direct current bus and the second line of the direct current bus and the th pole and the second pole of the power supply is controlled, the automatic switching of the connection relation can be realized, manual judgment is not needed, the connection efficiency is improved, meanwhile, different forms of direct current power supply systems can be connected to the direct current bus, the applicability of the converter device is improved, and the overall application cost of the direct current system is reduced.
Drawings
FIG. 1 is a block diagram of a prior art power supply system;
fig. 2 is a block diagram of an access device of a conventional power supply system;
fig. 3 is a structural diagram of a connection control apparatus according to an embodiment of the present invention;
FIG. 4 is a block diagram of a connection control apparatus according to another embodiment of the invention;
FIG. 5 is a block diagram of a connection control apparatus according to yet another embodiment of the invention;
FIG. 6 is a block diagram of a connection control apparatus according to yet another embodiment of the invention;
FIG. 7 is a circuit diagram of a connection control apparatus connection state according to still another embodiment of the present invention;
fig. 8 is a circuit diagram of a connection control apparatus according to a further embodiment of the present invention in a second connection state;
fig. 9 is a structural diagram of a dc power supply system according to an embodiment of the present invention;
fig. 10 is a flowchart of a connection control method according to an embodiment of the present invention.
Detailed Description
For purposes of clarity, technical solutions and advantages of the present invention, the present invention will be described in further detail with reference to the accompanying drawings , and it is obvious that the described embodiment is only a partial embodiment of the , rather than a complete embodiment.
As used in this specification and the appended claims, the singular forms "", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plural" includes at least two.
It should be understood that the term "and/or" is used herein only to describe kinds of association relationships that describe association objects, meaning that there may be three kinds of relationships, for example, a and/or B, and may mean that there are three cases of a alone, a and B together, and B alone.
For example, the th switch may also be referred to as the second switch, and similarly the second switch may also be referred to as the th switch without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or apparatus that comprises an series of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or apparatus.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
connection control apparatuses for automatically switching connection relations are provided in this embodiment, fig. 3 is a structural diagram of a connection control apparatus according to an embodiment of the present invention, and as shown in fig. 3, the apparatus includes a detection module 11, which is disposed between a dc bus of a converter and a power supply in parallel with a switch module 12, and is configured to detect a th voltage between a th line 141 of the dc bus of the converter and a second line 142 of the dc bus, and a second voltage between a th pole 151 of the power supply and a second pole 152 of the power supply, in which in specific implementation, the detection module 11 may collect th voltage data and the second voltage data through a voltage sensor and transmit the voltage data to a controller, the switch module 12 is configured to change a connection relation between the dc bus and the power supply by changing a conduction state of a switch, a controller 13, ends of the detection module 11 are connected to the detection module 11, another end is connected to the switch module 12, and is configured to receive the th voltage data and the second voltage data collected by the detection module 11, and control a connection relation between the dc bus 151 and the dc bus 151, and the second pole of the power supply according to the second voltage, the switch module 12, and the dc bus is connected to the dc bus 5392, and the dc bus is connected to the dc bus 151, and the dc bus 6857.
It should be noted that the connection between the controller 13 and the detection module 11 may be a wired connection or a wireless connection, and the voltage data collected by the detection module 11 can be transmitted to the controller 13 through wired transmission or wireless transmission, and similarly, the connection between the controller 13 and the switch module 12 may also be a wired connection or a wireless connection, and the control signal of the controller 13 can be transmitted to the switch module 12 through wired transmission or wireless transmission, which is not limited in the present invention.
In a specific implementation, the detection module 11 is a virtual functional module, the function of the detection module may be implemented by an analog-to-digital converter, the controller 13 may be implemented by a DSP control chip, the analog-to-digital converter of the access circuit converts measurement data of the th voltage and the second voltage into digital signals, which are used as initial input signals of the DSP control chip, based on a corresponding control principle, for example, if the second voltage and the second voltage are in the same direction, the dc bus th line 141 is controlled to be connected with the power th pole 151, the dc bus 142 is connected with the power source second pole 152, if the second voltage and the second voltage are in the same direction, the dc bus 853 th line 141 is controlled to be connected with the power source second pole 152, the dc bus 142 is connected with the power source second pole 151, based on the 5 basic principle, the DSP control chip performs a logic operation on the initial input signals, for example, the dc bus th voltage and the second voltage are operated, the second voltage th voltage is in the same direction as the power source second voltage, the power source second pole 151 is connected with the power source second pole th pole 151, based on the basic principle, the DSP bus 638 is connected with the power source second dc bus 150, the power source second pole contact, the DSP relay is connected with the DSP relay , the DSP relay is connected with the DSP relay, the dc bus 150, the DSP relay is connected with the DSP relay, the DSP relay is connected with the DSP relay, the power source second pole 638, the DSP relay is connected with the DSP relay, the DSP relay is connected with the DSP relay, the switch is connected with the DSP relay, the DSP relay is connected with the.
According to the voltage between the th line 141 of the direct current bus of the converter and the second line 142 of the direct current bus and the voltage between the th pole and the second pole of the power supply, the connection control device for automatically switching the connection relation controls the corresponding connection relation between the th line 141 of the direct current bus and the th pole and the second pole of the direct current bus 142 of the power supply, can realize the automatic switching of the connection relation, does not need manual judgment, improves the connection efficiency, can access direct current power supply systems of different forms on the direct current bus, improves the applicability of the converter device, and reduces the overall application cost of the direct current system.
Example 2
In order to implement the voltage between the th line 141 of the dc bus of the converter and the second line 142 of the dc bus, and the separate measurement of the second voltage between the th pole 151 and the second pole 152 of the power supply, in the specific implementation, based on the above embodiments, the detecting module 11 includes the th detecting unit 111 and the second detecting unit 112, as shown in fig. 4, the th detecting unit 111 is disposed between the th line 141 of the dc bus of the converter and the second line 142 of the dc bus for detecting the th voltage between the th line 141 of the dc bus and the second line 142 of the dc bus, the second detecting unit 112 is disposed between the th pole 151 of the power supply and the second pole 152 of the power supply for detecting the second voltage between the th pole 151 of the power supply and the second pole 152 of the power supply, the detected second voltage and the second voltage of the power supply, and the data transmission unit 73713 of the data transmission medium, and the data transmission unit 13 is also capable of directly detecting the data transmission control data transmission from the data transmission unit 3813 to the data transmission medium.
In order to realize that the connection relationship between the dc bus second line 141 and the dc bus second line 142 and the power supply second pole 151 and the power supply second pole 152 is switchable, in the present embodiment, the switch module 12 includes a 0 th selection switch K, a 1 st end of which is connected to the dc bus second line 141, a second end of which is connected to the power supply 4 th pole 151 or the power supply second pole 152 in a 3-to-3 manner, for realizing that the dc bus 5 th line 141 is connected to the power supply 6 th pole 151 or the power supply second pole 152 in a 7-to-7 manner, and/or a second selection switch K, a 8 th end of which is connected to the dc bus second line 142, a second end of which is connected to the power supply second pole 152 or the power supply first pole 151 in a 9-to realize that the dc bus 0 th line 141 is connected to the power supply second pole 152 or the power supply 1 st pole 151 in a 2-to-achieve that the dc bus 0 th line 141 is connected to the power supply second pole 152 or the power supply 1 st pole 151 in a 2-to-be-connected to-a power supply second pole contact 151, specifically, the 3 th selection switch K and the second relay, when the second relay is connected to the second relay, the second relay is connected to be connected to the second relay, and the second relay, and the second relay.
In order to control the connection between the dc bus and the power supply according to the th voltage and the second voltage according to different connection relations, in a specific implementation, as shown in fig. 4, the controller 13 includes a th control unit 131 for controlling a th relay switch and a second relay switch to be powered on when the th voltage is in the same direction as the second voltage, so as to control the th line 141 of the dc bus to be connected with the th pole 151 of the power supply, and the second 142 th line of the dc bus to be connected with the second pole 152 of the power supply, and a second control unit 132 for controlling a th relay switch and a second relay switch to be powered off when the th voltage is in the different direction from the second voltage, so as to control the th line 141 of the dc bus to be connected with the second pole 152 of the power supply, and the 142 th line of the dc bus to be connected with the th pole 151 of the power supply.
Example 3
The present embodiment provides another connection control device for automatically switching connection relations, fig. 5 is a structure diagram of a connection control device according to another embodiment of the present invention and an embodiment , as shown in fig. 5, in order to implement a dc bus th line 141 and a dc bus second line 142 by another 0 way, the connection relation between the dc bus th line 151 and a power supply second pole 152 is switchable, the present embodiment is different from the above embodiments in that the switch module 12 includes a third selection switch, a 593 rd end is connected to the power supply second th line 151, a second selection switch is connected to the dc bus th line 141 or the dc bus second line 142 for implementing the power supply second pole 151 and the dc bus second line 141 or the dc bus second line 142, and/or the fourth selection switch, a th end is connected to the power supply second pole 152, a second selection switch 827 th line 141 or the dc bus 142 is connected to the dc bus 141 or the dc bus second line for implementing selective conduction of the power supply second armature 151 and the dc bus 141, and the dc bus 26 th pole 141, and the dc bus second selection switch may be connected to the dc contact 365 th contact , and the dc contact 365 of the power supply second selection switch may be connected to the dc contact 366, and the dc bus , and the second selection switch 367 th pole may be connected to the dc contact 367 th line, and the dc contact 367 th line may be connected to the dc contact 367 th line, and the dc contact 367 th line of the dc contact 367 th line, and the dc bus, and the dc contact 367 th line may be connected to the dc contact 367 th line of the dc contact 367 th line, and the dc contact of the dc relay, and the dc contact 367 dc contact of the dc contact 367 th line may be connected to the dc contact of the power supply, and the dc contact 367 dc contact of the power supply, and the dc contact of the dc contact 367 dc contact of the dc relay, and the dc contact of the dc relay, the dc contact of the dc contact 367 dc contact of the dc contact 367 dc contact, and the dc contact of the dc contact 367 dc contact of the dc contact 367 dc contact, and the dc contact of the dc contact, the.
Example 4
Another connection control devices for automatically switching connection relations are provided in this embodiment, fig. 6 is a structural diagram of a connection control device according to another embodiment of the present invention, and as shown in fig. 6, in order to implement the second 1 line 141 and the second dc line 142 of the dc bus in another manner, the connection relation between the second pole 151 and the second power pole 152 of the power supply is switchable, this embodiment is different from the above embodiments in that the switch module 12 includes a third switch disposed between the second line 141 of the dc bus and the third pole 151 of the power supply for implementing the connection between the third line 141 of the dc bus and the second pole 151 of the power supply, a second switch disposed between the second line 141 of the dc bus and the second power pole 152 of the power supply for implementing the connection between the third line 141 of the dc bus and the second power pole 152 of the power supply, a second switch disposed between the second dc bus 142 and the second power pole 152 of the power supply for implementing the connection between the second dc bus line 141 and the second power supply, a fourth switch 3884 of the dc bus may be disposed between the second IGBT 3884 and the second switch, and the fourth switch may be disposed between the second switch switch, and the second switch may be disposed between the IGBT 3884, and the second switch may be disposed between the second switch, and the second switch.
Example 5
In the embodiment, another connection control device for automatically switching connection relations is provided, in the state that a second switch K of a first switch K is disconnected, a control system respectively samples a 1 st voltage between a fixed end K-3 of the 0 th switch K and the fixed end K-3 of the second switch K, and a second voltage between a pre-connection end K-1 and a pre-connection end K-2 of a 2 nd switch K or between a pre-connection end K-1 and a pre-connection end K-2 of the second switch K, judges whether polarities of K-3 and K-1 are the same or not according to the positive and negative of the first voltage and the second voltage, if the first voltage and the second voltage are both positive, the fixed end K-3 of the first switch K and the pre-connection end K-1 are both positive, the fixed end K-3 of the second switch K and the pre-connection end K-1 are both negative, if the first voltage and the second voltage are both negative, the fixed end K-3 of the first switch K and the pre-connection end K-1 are both negative, the fixed end K-3 and the second switch K-3 and the positive and negative end K-1 are both negative, and the direct current control device is connected with a direct current according to the embodiment of the invention, wherein the first voltage and the direct current control device are in the state shown in the direct current control circuit diagram, and the direct current control circuit, the direct current control device is in the first embodiment, and the second direct current control system, the embodiment, the direct current control device, the direct current control system, the direct.
If the voltage and the second voltage are positive negative, it is indicated that the th switch K1 stationary end K1-3 and the pre-connection end K1-1 are positive negative, and the second switch K2 stationary end K2-3 and K2-1 are also positive negative, so that the connection control device controls the power supply system to be connected according to the second connection state, fig. 8 is a circuit diagram of the connection control device according to the further embodiment of the present invention in the second connection state, as shown in fig. 8, in which state, K1-3 and K1-2 are conducted, and K2-3 and K2-2 are conducted, so as to achieve the effect that the dc bus positive electrode P and the dc line negative electrode N are correspondingly connected with the dc positive electrode P1 and the dc negative electrode N1 .
Example 6
In this embodiment, dc power supply systems are provided, and fig. 9 is a structural diagram of a dc power supply system according to an embodiment of the present invention, as shown in fig. 9, the dc power supply system includes two dc power supplies, i.e., a th dc power supply 71 and a second dc power supply 72, which are connected in parallel between dc buses of a converter, and also includes two connection control devices (the detection module and the controller are not shown) described above, which are used to realize that a positive electrode P of the dc bus and a negative electrode N of the dc bus are correspondingly connected to a positive electrode of each of the dc power supplies and a negative electrode of each of the dc power supplies.
Example 7
This embodiment provides connection control methods for automatically switching connection relationships, and fig. 10 is a flowchart of a connection control method according to an embodiment of the present invention, as shown in fig. 10, the method includes:
s101, acquiring a th voltage between an th line of a direct current bus of the converter and a second line of the direct current bus, and a second voltage between a th pole of a power supply and a second pole of the power supply;
in a specific implementation, in order to realize the respective measurement of a voltage between an th line of a direct current bus of the converter and a second line of the direct current bus and a second voltage between a 0 th pole of a power supply and a second pole of the power supply, a voltage between a th line of the direct current bus and the second line of the direct current bus is detected by a detection unit, and a second voltage between a th pole of the power supply and the second pole of the power supply is detected by a second detection unit, wherein the detection unit is arranged between the th line of the direct current bus of the converter and the second line of the direct current bus, the second detection unit is arranged between an th pole of the power supply and the second pole of the power supply, and the detected th voltage data and the detected second voltage data are respectively transmitted to the controller;
and S102, controlling the connection relation between the direct current bus and the power supply according to the th voltage and the second voltage.
In a specific implementation, in order to realize the second line of the dc bus, the second line of the dc bus is connected to the pole of the power supply and the second pole of the power supply is correctly connected, step S102 includes determining whether the directions of the second voltage and the second voltage are the same, if the directions are the same, there are two cases where the directions are the same, and type is 2 voltage and the second voltage are the same as positive, which indicates that the polarity of the connection between the second line of the dc bus and the pole of the power supply is the same as positive, and the polarity of the connection between the second line of the dc bus and the second pole of the power supply is the same as negative, and another type is the second voltage and the second voltage is the same as negative, which indicates that the polarity of the connection between the second line of the dc bus and the 638 pole of the power supply is the same as negative, and that the polarity of the connection between the second line of the dc bus and the second pole of the power supply is the same as positive, therefore, in both cases, the dc bus line is connected to the pole of the power supply, the connection between the second line and the power supply is the negative, and the second line 3527, and the connection between the dc bus is the power supply, and the positive pole of the power supply is the 3684, and the second bus is the negative pole of the , and the control bus , and the.
In a specific implementation, the connection control device according to embodiment 2 controls the th line of the dc bus to be connected to the th pole of the power supply and the second line of the dc bus to be connected to the second pole of the power supply, and includes controlling the 0 th selector switch to have its second end connected to the 1 th pole of the power supply and its second end connected to the second pole of the power supply, controlling the dc bus 2 th line to be connected to the second pole of the power supply and its second line to be connected to the 3 th pole of the power supply, including controlling the 4 th selector switch to have its second end connected to the second pole of the power supply and its second end connected to the 5 th pole of the power supply, wherein the th end of the th selector switch is connected to the th pole of the dc bus, and its second end is connected to the th pole of the power supply or the second pole of the power supply, and its second end is connected to the second pole of the dc bus and its second end is connected to the second pole th pole of the power supply.
In a specific implementation, the connection control device of embodiment 3 controls a th line of the direct current bus to be connected with a th pole of a power supply, controls a second pole of the direct current bus to be connected with a second pole of the power supply, and comprises a third selector 0 connected with a 1 th line of the direct current bus, controls a second end of a fourth selector to be connected with a second pole of the direct current bus, controls a 2 th line of the direct current bus to be connected with a second pole of the power supply, and controls a 3 th line of the direct current bus to be connected with a th pole of the power supply, and comprises a third selector 4 connected with a second pole of the direct current bus, and a fourth selector having a second end connected with a th line of the direct current bus, wherein a th end of the third selector is connected with a th pole of the power supply, a second end of the direct current bus is connected with a second pole of the direct current bus or the second line of the direct current bus, and a second end of the fourth selector is connected with a second pole of the power supply or the direct current bus.
In specific implementation, based on the connection control device of embodiment 4, the connection between the th line of the dc bus and the th pole of the power supply is controlled, the connection between the second line of the dc bus and the second pole of the power supply is controlled, the connection between the second line of the dc bus and the th pole of the power supply is controlled, the connection between the th switch and the third switch is controlled, the connection between the second switch and the fourth switch is controlled, the th switch is arranged between the th line of the dc bus and the nd pole of the power supply, the connection between the th line of the dc bus and the second pole of the power supply is controlled, and the connection between the second switch and the fourth switch is arranged between the second line of the dc bus and the th pole of the power supply is controlled.
The connection control method of the embodiment judges the polarity between the th line and the second line of the direct current bus and the th pole and the second pole of the power supply by detecting the voltage between the th line of the direct current bus of the converter and the second line of the direct current bus and the voltage between the th pole and the second pole of the power supply, thereby realizing the automatic and accurate connection between the th line and the second line of the direct current bus and the th pole and the second pole of the power supply.
Example 8
The present embodiment provides computer-readable storage media having stored thereon a computer program which, when executed by a processor, implements the above-described method.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, that is, may be located in places, or may be distributed on multiple network units.
Based on the understanding that the above technical solutions essentially or contributing to the prior art can be embodied in the form of a software product that can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing computer devices (which may be personal computers, servers, or network devices, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
- A connection control apparatus of the type 1, , comprising:the detection module is connected with the switch module in parallel and arranged between a direct current bus and a power supply of the converter and is used for detecting a th voltage between an th line of the direct current bus of the converter and a second line of the direct current bus and a second voltage between a th pole and a second pole of the power supply;the switch module is used for changing the connection relation between the direct current bus and the power supply by changing the conduction state of the switch;and the end of the controller is connected with the detection module, and the end of the controller is connected with the switch module and is used for controlling the conducting state of a switch in the switch module according to the th voltage and the second voltage so as to control the connection relation between the direct current bus and the power supply.
- 2. The apparatus of claim 1, wherein the detection module comprises:the detection unit is arranged between a th line of a direct current bus and a second line of the direct current bus of the converter and is used for detecting a th voltage between a th line of the direct current bus and the second line of the direct current bus;and the second detection unit is arranged between the th pole of the power supply and the second pole of the power supply and is used for detecting a second voltage between the th pole of the power supply and the second pole of the power supply.
- 3. The apparatus of claim 1, wherein the switch module comprises:selection switch, the end is connected with the line of the DC bus, the second end is connected with the pole of the power supply or the second pole of the power supply, for realizing the connection between the line of the DC bus and the pole of the power supply or the pole of the power supply, and/or,and a second selector switch, wherein the th end is connected with the second line of the direct current bus, the second end is connected with the second pole of the power supply or the th pole of the power supply, and the second selector switch is used for realizing the connection between the th line of the direct current bus and the second pole of the power supply or the th pole of the power supply.
- 4. The apparatus of claim 1, wherein the switch module comprises:a third selector switch, wherein the th end is connected with the th pole of the power supply, the th end is connected with the th pole of the direct current bus or the second line of the direct current bus, and is used for realizing the connection of the th pole of the power supply with the th pole of the direct current bus or the second line of the direct current bus , and/or,and a fourth selector switch, wherein the th end is connected with the second pole of the power supply, the second end is connected with the second line of the direct current bus or the th line of the direct current bus, and the fourth selector switch is used for realizing selective connection between the second pole of the power supply and the second line of the direct current bus or the th line of the direct current bus.
- 5. The apparatus of claim 1, wherein the switch module comprises:an switch, disposed between the th line of the DC bus and the th pole of the power supply, for connecting the th line of the DC bus with the th pole of the power supply;the second switch is arranged between the th line of the direct current bus and the second pole of the power supply and is used for realizing the connection between the th line of the direct current bus and the second pole of the power supply;the third switch is arranged between the second line of the direct current bus and the second pole of the power supply and is used for realizing the connection between the second line of the direct current bus and the second pole of the power supply;and the fourth switch is arranged between the second line of the direct current bus and the th pole of the power supply and is used for realizing the connection between the second line of the direct current bus and the th pole of the power supply.
- 6. The apparatus of claim 1, wherein the controller comprises:an control unit for controlling the DC bus line to be connected with the th pole of the power supply and the DC bus second line to be connected with the second pole of the power supply when the th voltage is in the same direction as the second voltage;and the second control unit is used for controlling the th line of the direct current bus to be connected with the second pole of the power supply when the th voltage is different from the second voltage in direction, and the second line of the direct current bus is connected with the th pole of the power supply.
- A power supply system of , comprising at least connection control devices of any of of claims 1-6.
- 8, A connection control method, comprising:acquiring a th voltage between a th line of a direct current bus of the converter and a second line of the direct current bus, and a second voltage between a th pole of a power supply and a second pole of the power supply;and controlling the connection relation between the direct current bus and the power supply according to the th voltage and the second voltage.
- 9. The method of claim 8, wherein controlling the connection between the dc bus and the power source according to the th voltage and the second voltage comprises:judging whether the th voltage and the second voltage are in the same direction or not;if the current is the same as the current, controlling an th line of the direct current bus to be connected with a th pole of a power supply, and controlling a second line of the direct current bus to be connected with a second pole of the power supply;if not, the second line of the DC bus is controlled to be connected with the second pole of the power supply, and the second line of the DC bus is controlled to be connected with the th pole of the power supply.
- 10. The method of claim 9,the control direct current bus line is connected with the pole of the power supply, and the second line of the direct current bus is connected with the second pole of the power supply, and the control direct current bus comprises a control selection switch, a second end of which is connected with the pole of the power supply, and a second end of which is connected with the second pole of the power supply;the control direct current bus line is connected with the power supply second pole, the direct current bus second line is connected with the power supply pole, the control direct current bus comprises a control selection switch, a control switch and a control switch, wherein the second end of the control switch is connected with the power supply second pole, and the second end of the control switch is connected with the power supply pole;the end of the selective switch is connected with the th wire of the direct current bus, the second end is connected with the th pole or the second pole of the power supply, the end of the second selective switch is connected with the second wire of the direct current bus, and the second end is connected with the second pole of the power supply or the th pole of the power supply.
- 11. The method of claim 9,the method comprises the steps of controlling a second end of a third selector switch to be connected with a th line of the direct-current bus in a mode, and controlling a second end of a fourth selector switch to be connected with a second line of the direct-current bus;controlling a th line of the direct current bus to be connected with a second pole of the power supply, and connecting a th pole of the direct current bus, wherein the second end of a third selector switch is controlled to be connected with the second line of the direct current bus, and the second end of a fourth selector switch is connected with a th line of the direct current bus;the th end of the third selector switch is connected with the th pole of the power supply, the th end of the third selector switch is connected with the th pole of the direct current bus or the second line of the direct current bus, the th end of the fourth selector switch is connected with the second pole of the power supply, and the th end of the fourth selector switch is connected with the second line of the direct current bus or the th line of the direct current bus.
- 12. The method of claim 9,controlling the th line of the direct current bus to be connected with the th pole of the power supply, and controlling the second line of the direct current bus to be connected with the second pole of the power supply, wherein the steps of controlling the th switch and the third switch to be switched on and the second switch and the fourth switch to be switched off are included;controlling the th line of the direct current bus to be connected with the second pole of the power supply, and controlling the th pole of the power supply to be connected with the second line of the direct current bus, wherein the steps of controlling the th switch and the third switch to be switched off and controlling the second switch and the fourth switch to be switched on are included;the th switch is arranged between the th line of the direct current bus and the th pole of the power supply, the second switch is arranged between the th line of the direct current bus and the second pole of the power supply, the third switch is arranged between the second line of the direct current bus and the second pole of the power supply, and the fourth switch is arranged between the second line of the direct current bus and the th pole of the power supply.
- Computer-readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the method according to any of claims 8 to 12 as .
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| CN111257786A (en) * | 2020-02-26 | 2020-06-09 | 维沃移动通信有限公司 | Working current self-checking circuit and method and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111257786A (en) * | 2020-02-26 | 2020-06-09 | 维沃移动通信有限公司 | Working current self-checking circuit and method and electronic equipment |
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