Mixed power elevator uninterruptible power system

Abstract

To provide a mixed power elevator uninterruptible power system that reduces losses due to conversion and increases conversion efficiency. [Solution] The mixed power elevator uninterruptible system includes a motor driver 1, an uninterruptible device 2, and an AC load 3. The motor driver has a DC / AC conversion unit 12, which is electrically connected to a motor 13. The uninterruptible device includes a solar energy charge controller 21 and a charger 22. An input terminal of the solar energy charge controller is electrically connected to a solar panel 211. An input terminal of the charger is electrically connected to a commercial power source. Output terminals of the solar energy charge controller and the charger are electrically connected to a rechargeable battery 23, a bidirectional DC converter 24, and an inverter 25, respectively. The rechargeable battery is charged with electrical energy generated by the solar energy charge controller and the charger, and the electrical energy is supplied to the bidirectional DC converter and the inverter.

Description

[Technical field]

[0001] The present invention relates to a mixed-power elevator uninterruptible system, and particularly to a mixed-power elevator uninterruptible system which, during actual operation and use, only requires one conversion to supply electrical energy to a DC / AC conversion unit of a motor driver to operate the motor, thereby reducing conversion loss and improving conversion efficiency, reducing waste when using electrical energy, and achieving excellent practical utility in overall use. [Background technology]

[0002] In modern society, due to limited land and high population density, various buildings are getting taller and taller with more and more floors. Therefore, various buildings are generally equipped with elevators so that people can easily move up and down between floors and go to the desired floor. However, during the operation of the elevator, the power supply to the elevator car may become abnormal due to a power system failure or a power outage, and the operation may stop, and the elevator car may not stop at the correct position and may stop in the middle of the floor, threatening the life and safety of the users.

[0003] Some companies use uninterruptible power supply devices to assist in the supply of power, so that if the elevator car stops operating due to a power issue, the uninterruptible power supply device can assist in the supply of power, move the elevator car to the nearest floor, and safely evacuate the passengers inside the elevator car.

[0004] FIG. 7 is a block diagram showing a conventional configuration. An elevator motor driver 4 is provided with an AC / DC conversion unit 41 and a DC / AC conversion unit 42 that are electrically connected to each other. A motor 43 is connected to an output terminal of the DC / AC conversion unit 42. An uninterruptible power supply unit 44 is electrically connected to the AC / DC conversion unit 41. An uninterruptible power supply unit 44 is provided with a DC / DC converter 441 and a DC / AC converter 442 that are electrically connected to each other. The DC / AC converter 442 is electrically connected to the AC / DC conversion unit 41. The DC / DC converter 441 is electrically connected to a solar energy supply device 45, a charging circuit 46, and a charging battery 47. The solar energy supply device 45 electrically connects a solar panel 451 to a solar energy charging controller 452. The solar energy charging controller 452 is electrically connected to the DC / DC converter 441 and the charging battery 47. The charging circuit 46 is electrically connected to a commercial power source, and the output terminal of the charging circuit 46 is electrically connected to the DC / DC converter 441 and the rechargeable battery 47, respectively.

[0005] In actual operation, when the solar panel 451 of the solar energy supply device 45 is irradiated with sunlight, electricity is generated, and the rechargeable battery 47 is charged with the electric energy generated by the electrically connected solar energy charge controller 452, or the rechargeable battery 47 can be directly supplied to the uninterruptible power supply device 44. When the electric energy of the commercial power supply is supplied to the charging circuit 46, the electric energy is converted in the same manner to charge the rechargeable battery 47, or the uninterruptible power supply device 44 can be directly supplied to the uninterruptible power supply device 44. When DC electric energy is supplied from the solar energy supply device 45, the charging circuit 46, or the rechargeable battery 47, the DC / DC converter 441 of the uninterruptible power supply device 44 performs a first conversion to boost the DC electric energy, and supplies the boosted DC electric energy to the DC / AC converter 442 to perform a second conversion, and converts the boosted DC current into an AC current. The AC current is transmitted to the AC / DC conversion unit 41 of the motor driver 4 for a third conversion, where the input AC current is rectified and then output to the DC / AC conversion unit 42, which operates the motor 43 to move the elevator car.

[0006] The above-mentioned uninterruptible power supply device can achieve the expected effect of assisting in power supply when the operation of the elevator car stops due to a power factor. However, as can be seen when actually operating it, the uninterruptible power supply device first performs a first conversion by a DC / DC converter, then a second conversion by a DC / AC converter, and finally transmits the power to the motor driver before performing a third conversion by an AC / DC conversion unit. However, the three conversion steps result in large energy loss, significantly reducing the conversion efficiency, and resulting in wasted electrical energy, so there is still room for improvement in the overall structural design.

[0007] The present invention has been made in consideration of the above-mentioned shortcomings of the prior art, and the inventor has completed a mixed power elevator uninterruptible power system according to the present invention as a result of extensive research. Summary of the Invention [Problem to be solved by the invention]

[0008] The main objective of this invention is to provide a mixed-power elevator uninterruptible power system, which, in practical operation and use, can supply electrical energy to the DC / AC conversion unit of the motor driver to operate the motor with only one conversion using the bidirectional DC converter of the uninterruptible power device, thereby reducing conversion loss, improving conversion efficiency, reducing waste when using electrical energy, and providing excellent practical utility in overall use. [Means for solving the problem]

[0009] In order to solve the above problems, according to a first aspect of the present invention, there is provided a mixed power elevator uninterruptible system including a motor driver, an uninterruptible device, and an AC load, wherein the motor driver has a DC / AC conversion unit, and the DC / AC conversion unit is electrically connected to a motor, the uninterruptible device has a solar energy charge controller and a charger, respectively, an input terminal of the solar energy charge controller is electrically connected to a solar panel, an input terminal of the charger is electrically connected to a commercial power supply, and an output terminal of the solar energy charge controller and the charger are electrically connected to a rechargeable battery, a bidirectional DC converter, and an inverter, respectively, the rechargeable battery is charged with the electric energy generated by the solar energy charge controller and the charger, and the electric energy is supplied to the bidirectional DC converter and the inverter, the bidirectional DC converter is electrically connected to the DC / AC conversion unit of the motor driver, the inverter converts the input DC current into AC current, and the AC load is electrically connected to the inverter of the uninterruptible device,

[0010] The AC load is preferably an elevator-related device that uses electricity.

[0011] The AC load is preferably an elevator controller, an elevator brake, a door controller, a car lighting or a ventilation fan. Effect of the Invention

[0012] In practical operation, the mixed-power elevator uninterruptible power system of the present invention only requires one conversion using the bidirectional DC converter of the uninterruptible power device to supply electrical energy to the DC / AC conversion unit of the motor driver to operate the motor, thereby reducing conversion loss and improving conversion efficiency, reducing waste when using electrical energy, and providing excellent practical utility in terms of overall usage. [Brief description of the drawings]

[0013] [Figure 1] 1 is a circuit diagram illustrating the configuration and use of a mixed power elevator uninterruptible power system according to an embodiment of the present invention; FIG. [Diagram 2] 1 is a circuit diagram showing the use of a mixed power elevator uninterruptible power system according to a first embodiment of the present invention; FIG. [Diagram 3] 4 is a circuit diagram showing the use of a mixed power elevator uninterruptible power system according to a second embodiment of the present invention; FIG. [Figure 4] 4 is a circuit diagram showing the use of a mixed power elevator uninterruptible power system according to a third embodiment of the present invention; FIG. [Diagram 5] FIG. 10 is a circuit diagram showing the use of a mixed power elevator uninterruptible power system according to a fourth embodiment of the present invention; [Figure 6] FIG. 5 is a circuit diagram showing the use of a mixed power elevator uninterruptible power system according to a fifth embodiment of the present invention; [Figure 7] FIG. 1 is a circuit diagram showing a state of use of a configuration of the prior art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] In order to more completely and clearly disclose the technical means, objectives and effects achievable thereby of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and symbols disclosed.

[0015] First, please refer to Fig. 1. Fig. 1 is a circuit diagram showing the configuration and use of a mixed-power elevator uninterruptible system according to an embodiment of the present invention. As shown in Fig. 1, the mixed-power elevator uninterruptible system according to an embodiment of the present invention includes a motor driver 1, an uninterruptible device 2, and an AC load 3.

[0016] The motor driver 1 has a conventional structural design and includes an AC / DC conversion unit 11. The AC / DC conversion unit 11 is electrically connected to a DC / AC conversion unit 12. The DC / AC conversion unit 12 is electrically connected to a motor 13, and the motor 13 is operated by the DC / AC conversion unit 12.

[0017] The uninterruptible power supply 2 has a solar energy charge controller 21 and a charger 22. A solar panel 211 is electrically connected to an input terminal of the solar energy charge controller 21. An input terminal of the charger 22 is electrically connected to a commercial power source. Output terminals of the solar energy charge controller 21 and the charger 22 are electrically connected to a rechargeable battery 23, a bidirectional DC converter 24, and an inverter 25, respectively, and the rechargeable battery 23 is charged with the electric energy generated by the solar energy charge controller 21 and the charger 22, and supplied to the bidirectional DC converter 24 and the inverter 25. The bidirectional DC converter 24 is electrically connected to the DC / AC conversion unit 12 of the motor driver 1. The inverter 25 converts the input DC current into AC current.

[0018] The AC load 3 is electrically connected to the inverter 25 of the uninterruptible power supply device 2. The AC load 3 may be an elevator-related device that uses electricity, such as an elevator controller, an elevator brake, a door controller, a car room light, a ventilation fan, or the like.

[0019] (First Example) Please refer to Fig. 2. Fig. 2 is a circuit diagram showing the use of the mixed-power elevator uninterruptible system according to the first embodiment of the present invention. The mixed-power elevator uninterruptible system according to the first embodiment of the present invention supplies electric energy from a commercial power source to the charger 22 of the uninterruptible device 2. The charger 22 charges the rechargeable battery 23, supplies it to the DC / AC conversion unit 12 of the motor driver 1 via the bidirectional DC converter 24, converts it to AC by the DC / AC conversion unit 12 to operate the motor 13, and converts it to AC by the inverter 25 to supply it to the AC load 3 to operate it.

[0020] (Second Example) Please refer to Figure 3. Figure 3 is a circuit diagram showing the use of the mixed power elevator uninterruptible system according to the second embodiment of the present invention. As shown in Figure 3, in the mixed power elevator uninterruptible system according to the second embodiment of the present invention, the solar panel 211 electrically connected to the solar energy charging controller 21 is irradiated with sunlight and converted into electric energy. The solar energy charging controller 21 charges the rechargeable battery 23, transmits the energy to the DC / AC conversion unit 12 of the motor driver 1 via the bidirectional DC converter 24, and converts it to AC current by the DC / AC conversion unit 12 to operate the motor 13, and converts it to AC current by the inverter 25 to supply it to the AC load 3 to operate it. By installing the bidirectional DC converter 24, when the motor 13 operates to move the elevator car, the motor 13 generates electricity to generate regenerative energy, and the bidirectional DC converter 24 charges the rechargeable battery 23.

[0021] (Third Example) Please refer to Figure 4. Figure 4 is a circuit diagram showing the use of the mixed power elevator uninterruptible system according to the third embodiment of the present invention. As shown in Figure 4, the mixed power elevator uninterruptible system according to the third embodiment of the present invention further converts sunlight into electric energy when the solar panel 211 electrically connected to the solar energy charging controller 21 is irradiated with the solar energy, and charges the rechargeable battery 23 through the solar energy charging controller 21. The electric energy is also transmitted from the bidirectional DC converter 24 to the DC / AC conversion unit 12 of the motor driver 1, and is converted by the DC / AC conversion unit 12 to operate the motor 13. The inverter 25 converts the electric current into AC current, and supplies the AC load 3 to operate it.

[0022] (Fourth Example) Please refer to Fig. 5. Fig. 5 is a circuit diagram showing the usage state of the mixed power elevator uninterruptible system according to the fourth embodiment of the present invention. As shown in Fig. 5, when the solar panel 211 cannot generate power at night, the rechargeable battery 23 can be fully charged by charging it with sufficient solar energy during the day, and even if there is no additional power, the power can be directly transmitted from the rechargeable battery 23 via the bidirectional DC converter 24 to the DC / AC conversion unit 12 of the motor driver 1, which converts it to operate the motor 13, and also converts it to AC current by the inverter 25 and supplies it to the AC load 3 to operate it.

[0023] (Fifth Example) Please refer to Fig. 6. Fig. 6 is a circuit diagram showing the use of a mixed power elevator uninterruptible system according to the fifth embodiment of the present invention. As shown in Fig. 6, when a power outage occurs and the supply of commercial power is stopped, the power is directly transmitted from the rechargeable battery 23 to the DC / AC conversion unit 12 of the motor driver 1 through the bidirectional DC converter 24, converted through the DC / AC conversion unit 12 to operate the motor 13, and converted into AC current by the inverter 25 to supply power to the AC load 3 to operate it. In the process of moving the elevator car by the operation of the motor 13, the regenerative energy generated by the motor 13 charges the rechargeable battery 23 through the bidirectional DC converter 24. When the sunlight during the day is sufficient, the sunlight irradiated to the solar panel 211 may be similarly converted into electrical energy, and the rechargeable battery 23 may be charged by the solar energy charging controller 21.

[0024] As can be seen from the above, the mixed power elevator uninterruptible power system of the present invention has the following advantages (1) to (3) compared with the prior art. (1) During actual operation and use, a single conversion using the uninterruptible power supply's bidirectional DC converter allows electrical energy to be supplied to the motor driver's DC / AC conversion unit to operate the motor, reducing conversion loss, improving conversion efficiency, and reducing waste when using electrical energy. (2) It operates on single-phase power supply only, eliminating the need for three-phase power supply, and can be easily installed on a circuit. (3) Not only can the rechargeable battery be charged using commercial power, but it can also be charged using solar energy. The regenerative energy generated when the elevator car moves can be used to charge the rechargeable battery via a bidirectional DC converter, greatly improving power saving efficiency and providing excellent practical utility in terms of overall use.

[0025] The preferred embodiments of the present invention have been disclosed above so that those skilled in the art can understand, but they are not intended to limit the present invention. Various changes and modifications can be made within the scope of the present invention. Therefore, the scope of the utility model registration claims of the present invention should be broadly interpreted to include such changes and modifications. [Explanation of symbols]

[0026] 1 Motor driver 2 Uninterruptible device 3 AC load 4 Motor Driver 11 AC / DC conversion unit 12 DC / AC conversion unit 13 Motor 21 Solar Energy Charge Controller 22 Charger 23 Rechargeable battery 24 Bidirectional DC converter 25 Inverter 41 AC / DC conversion unit 42 DC / AC conversion unit 43 Motor 44 Uninterruptible equipment 45 Solar energy supply device 46 Charging circuit 47 Rechargeable battery 211 Solar Panel 441 DC / DC Converter 442 DC / AC Converter 451 Solar Panel 452 Solar Energy Charge Controller

Claims

1. A mixed power elevator uninterruptible system comprising a motor driver, an uninterruptible device and an AC load, The motor driver has a DC / AC conversion unit, the DC / AC conversion unit is electrically connected to a motor, The uninterruptible power supply device has a solar energy charge controller and a charger, an input terminal of the solar energy charge controller is electrically connected to a solar panel, an input terminal of the charger is electrically connected to a commercial power supply, and an output terminal of the solar energy charge controller and the charger are electrically connected to a rechargeable battery, a bidirectional DC converter and an inverter, respectively, the rechargeable battery is charged with the electric energy generated by the solar energy charge controller and the charger, and the electric energy is supplied to the bidirectional DC converter and the inverter, the bidirectional DC converter is electrically connected to the DC / AC conversion unit of the motor driver, and the inverter converts the input DC current into AC current, The AC load is electrically connected to the inverter of the uninterruptible power supply. Mixed power elevator uninterruptible system.

2. 2. The mixed power elevator uninterruptible power system according to claim 1, wherein the AC load is an elevator-related device that uses electricity.

3. 3. The mixed power elevator uninterruptible power system according to claim 1, wherein the AC load is an elevator controller, an elevator brake, a door controller, a car room lighting, or a ventilation fan.

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