Patent Application
20220376547
The present invention relates to the field of power supplying, and more particularly to an uninterruptible power system and an operation method thereof.
At present, uninterruptible power systems (UPS) with multiple output ports have appeared on the market. The output ports of such an uninterruptible power system are divided into multiple groups (or called banks) to control them respectively. However, since the output port groups of such an uninterruptible power system are all defined at the time of manufacture, this makes the uninterruptible power system lack flexibility in use.
An object of the present invention is to provide an uninterruptible power system, which can define members of at least one group from the output ports according to a system setting inputted by a user, thereby improving flexibility in use.
Another object of the present invention is to provide an operation method of the above-mentioned uninterruptible power system.
To achieve the above objective, the present invention provides an uninterruptible power system, which comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units, a plurality of output ports and a control unit. Each switch has a first terminal, a second terminal and a control terminal, and the first terminals are electrically coupled to an output terminal of the DC-AC conversion circuit. An input terminal of each sensing unit is electrically coupled to one of the second terminals for sensing at least one of voltage and current. Each output port is electrically coupled to an output terminal of one of the sensing units. The control unit is electrically coupled to the DC-AC conversion circuit, the control terminals of the switches and the sensing units. The control unit is configured to define members of at least one group from the output ports according to a system setting, and define which members of each group are non-critical output ports according to the system setting. The control unit is further configured to set, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.
To achieve the above objective, the present invention also provides an operation method of an uninterruptible power system. The uninterruptible power system comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units and a plurality of output ports. Each switch has a first terminal, a second terminal and a control terminal, and the first terminals are electrically coupled to an output terminal of the DC-AC conversion circuit. An input terminal of each sensing unit is electrically coupled to one of the second terminals for sensing at least one of voltage and current. Each output port is electrically coupled to an output terminal of one of the sensing units. The operation method comprises the following steps: defining members of at least one group from the output ports according to a system setting; defining which members of each group are non-critical output ports according to the system setting; and setting, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.
In order to make the above objects, technical features and gains after actual implementation more obvious and easy to understand, in the following, the preferred embodiments will be described with reference to the corresponding drawings and will be described in more detail.
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:
The characteristics, contents, advantages and achieved effects of the present disclosure will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present disclosure.
As required, detailed embodiments are disclosed herein. It must be understood that the disclosed embodiments are merely exemplary of and may be embodied in various and alternative forms, and combinations thereof. As used herein, the word “exemplary” is used expansively to refer to embodiments that serve as illustrations, specimens, models, or patterns. The figures are not necessarily to scale and some features may be exaggerated or minimized to show details of particular components. In other instances, well-known components, systems, materials, or methods that are known to those having ordinary skill in the art have not been described in detail in order to avoid obscuring the present disclosure. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art.
As shown in
In addition, the temperature sensing unit 126 and the sensing unit 128 are both electrically coupled to the battery 116. In this embodiment, the temperature sensing unit 126 is configured to sense at least one of temperature of the battery 116, internal temperature of the uninterruptible power system 110, and ambient temperature outside the uninterruptible power system 110. The sensing unit 128 is configured to sense remaining energy of the battery 116. The control unit 120 is electrically coupled to the switch unit 104, the power factor correction circuit 106, the DC-AC conversion circuit 108, the charging circuit 112, and the DC-DC conversion circuit 114, and is configured to provide control signals C1 to C5 to control their operations, respectively. For example, the control unit 120 can use the control signal C1 to control the operation of the switch unit 104, so that the switch unit 104 electrically couples the output terminal of the filtering unit 102 to the bypass path 118, or electrically couples the output terminal of the filtering unit 102 to the input terminal of the power factor correction circuit 106. The control unit 120 is further electrically coupled to the control terminal of each of the switches 140_1 to 140_N, and is configured to provide control signals D1 to DN to control the operations of these switches, respectively. For example, the control unit 120 can use the control signal D1 to control the switch 104_1 to be in on state or in off state.
The control unit 120 is further electrically coupled to the sensing units 150_1-150_N to control their operations, and receives the sensing data S1-SN respectively obtained by the sensing units 150_1-150_N. In this way, the control unit 120 can calculate the power consumption of the corresponding load according to the sensing data S1-SN. The control unit 120 is further electrically coupled to the temperature sensing unit 126 and the sensing unit 128 to control their operations, and receives the sensing data T and the sensing data Q obtained by the temperature sensing unit 126 and the sensing unit 128, respectively. In addition, the control unit 120 is further electrically coupled to the input interface 122, the communication interface 124 and the input terminal of the filtering unit 102. In this embodiment, the control unit 120 is further configured to receive the signal A on the input terminal of the filtering unit 102, and determine whether the AC power source (i.e., the AC mains) fails. In addition, in this embodiment, the control unit 120 is further configured to receive a system setting inputted by a user through the input interface 122 (details will be described later). The input interface 122 can be implemented by a touch panel or multiple physical buttons; however, this is not intended to limit the present invention.
After receiving the system setting, the control unit 120 defines members of at least one group from the output ports 160_1-160_N according to the system setting, and defines which members of each group are non-critical output ports according to the system setting. Take 8 output ports as an example. Assuming that the system setting received by the control unit 120 is used to create two groups, group 1 and group 2; assuming that in this system setting, group 1 consists of output ports 160_1, 160_3, 160_4, 160_5, and 160_6, and group 2 consists of output ports 160_2, 160_7, and 160_8; and assuming that the output ports 160_1-160_4 are non-critical output ports, then the control unit 120 will define the output ports 160_1, 160_3, 160_4, 160_5, and 160_6 as the members of group 1 according to the system setting, and define the output ports 160_2, 160_7, and 160_8 as the members of group 2 according to the system setting. In addition, the control unit 120 will define the output ports 160_1, 160_3, and 160_4 in the group 1 as non-critical output ports according to the system setting, and define the output port 160_2 in the group 2 as non-critical output ports according to the system setting. As for the other output ports in group 1 and the other output ports in group 2, the control unit 120 will automatically define them as critical output ports.
Next, the control unit 120 sets, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches. The parameters considered in the conditions comprise at least one of power consumption of load, whether the AC mains fails, remaining energy of the battery 116, temperature of the battery 116, internal temperature of the uninterruptible power system 100, ambient temperature outside the uninterruptible power system 100, and a set counting time set by a user.
Assume that the system setting received by the control unit 120 sets three conditions for each of group 1 and group 2, as follows:
It must be noted that the system setting described above is only for example, and is not intended to limit the present invention. Those skilled in the art should know that the content of the above system setting can be changed according to actual needs. For example, the system setting can create only one group, or create more than three groups. For another example, the system setting can define all members in at least one group as non-critical output ports, or define all members in at least one group as critical output ports. In addition, from the three conditions corresponding to group 1 and the three conditions corresponding to group 2, it can be seen that the parameters considered in these conditions comprise power consumption of load, whether the AC mains fails, and remaining energy of the battery 116. However, this is not intended to limit the present invention. Those skilled in the art should know that the quantity of the above conditions and the parameters considered in the conditions can be changed according to actual needs. For example, the system setting can set a single condition for one of the groups, and the parameter considered in this condition is, for example, a set counting time set by a user. Therefore, when the counting time reaches the set counting time set by the user (for example, four hours), the control unit 120 controls the operations of the corresponding switches of all non-critical output ports in this group, thereby causing all non-critical output ports in this group to simultaneously stop supplying power.
In addition, although in the above description, the control unit 120 receives the system setting inputted by the user through the input interface 122, this is not intended to limit the present invention. For example, assuming that the control unit 120 is further configured to execute a web server program to provide a web-based user interface, and that the web-based user interface is configured for a user to enter the system setting, then the control unit 120 can receive the system setting inputted by the user through the communication interface 124. Certainly, the web-based user interface comprises a Web interface, a SNMP interface (simple network management protocol interface) or a Telnet interface. In addition, the communication interface 124 can be a wired communication interface or a wireless communication interface, which is not limited by the present invention.
It is worth mentioning that, in this embodiment, whether to adopt the filtering unit 102, the filtering unit 110, the DC-DC conversion circuit 114, the input interface 122, the communication interface 124, the temperature sensing unit 126, and the sensing unit 128 can be determined by actual needs. In addition, the designer can further decide whether to electrically couple the control unit 120 to the input terminal of the filtering unit 102 according to actual needs.
Similarly, the functions performed by the aforementioned uninterruptible power system 100 can also be applied to uninterruptible power systems of different architectures, as illustrated in
Based on the above description, a person skilled in the art can conclude some basic operation steps of the uninterruptible power system of the present invention, as illustrated by
After performing step S404, the control unit defines which members of each group are non-critical output ports according to the system setting (as shown in step S406). Then, the control unit sets, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches (as shown in step S408).
Certainly, in step S408, the parameters considered in the conditions comprise at least one of power consumption of load, whether the AC mains fails, remaining energy of the battery of the uninterruptible power system, temperature of the battery of the uninterruptible power system, internal temperature of the uninterruptible power system, ambient temperature outside the uninterruptible power system, and a set counting time.
In summary, since the uninterruptible power system of the present invention can define members of at least one group from the output ports according to a system setting inputted by a user, the uninterruptible power system of the present invention is more flexible in use than the conventional uninterruptible power systems.
While the disclosure has been described by way of example and in terms of the preferred embodiments, it is to be understood that the disclosure is not limited to the disclosed embodiments. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110551789.X | May 2021 | CN | national |
