Co-located energy storage and regeneration system

Abstract

To provide a level-equal energy storage and regeneration system which enables passengers in an elevator car to smoothly escape and can be used safely when a commercial power source stops supplying electricity. [Solution] The homogeneous energy storage and regeneration system comprises an elevator control system 1, a switching device 2, a storage and regeneration device 3 and a protection device 4. The elevator control system connects a commercial power source to a control panel 11 and a rectifier 12. The control panel controls all overall operations. The rectifier is connected in parallel to a DC capacitor 13 and a modulator 14, and the modulator is connected to a motor 15. The commercial power source is rectified by the rectifier and modulated by the modulator to rotate the motor, and the elevator car moves up and down via the motor. The switching device includes a voltage detection unit 21 and a change-over switch 22 provided between the control panel and the rectifier of the elevator control system.

Description

[Technical field]

[0001] This invention relates to an iso-potential / equi-potential energy storage and regeneration system, and in particular to an iso-potential / equi-potential energy storage and regeneration system that reduces the overall electrical energy consumption, thereby lowering operating costs, enables passengers in the elevator car to escape smoothly when the commercial power supply is cut off, is safe to use, and has excellent practical utility in terms of overall use. [Background technology]

[0002] In modern society, land is limited and population density is high, so buildings are getting taller and have more and more floors. Therefore, it is common for buildings to be equipped with elevators so that people can move up and down between floors and easily go to the desired floor. However, elevator cars are very heavy, and when passengers are inside the car, the total weight becomes even heavier. In addition, a large amount of electricity is consumed when the elevator is used. Therefore, related manufacturers are developing energy-saving devices related to various elevator equipment that can effectively use electrical energy, which is a limited resource.

[0003] The present invention has been made in consideration of the above-mentioned shortcomings of the conventional technology, and the inventor has completed the homogenous energy storage and regeneration system according to the present invention as a result of extensive research. Summary of the Invention [Problem to be solved by the invention]

[0004] The main object of the present invention is to provide a level-equilibrium energy storage and regeneration system which reduces the overall electrical energy consumption, lowers operating costs, allows passengers in the elevator car to escape smoothly when the commercial power supply is cut off, is safe to use, and has excellent practical utility in terms of overall use. [Means for solving the problem]

[0005] In order to solve the above problems, according to a first aspect of the present invention, there is provided a homogeneous energy storage and regeneration system including an elevator control system, a switching device, a storage and regeneration device, and a protection device, wherein the elevator control system connects a commercial power supply to a control panel and a rectifier, respectively, the control panel controls each operation of the entire system, the rectifier is connected in parallel with a DC capacitor and a modulator, and the modulator is connected to a motor, the commercial power supply is rectified by the rectifier and modulated by the modulator to rotate the motor, and an elevator car moves up and down via the motor, the switching device includes a voltage detection unit and a changeover switch provided between the control panel and the rectifier of the elevator control system, the voltage detection unit is connected to the commercial power supply and detects whether the commercial power supply is conductive, the voltage detection unit is connected to one contact of the changeover switch, the other contact of the changeover switch is connected to the control panel and the rectifier, and the other contact of the changeover switch is connected to a DC / AC converter (DC-to-ACThe switching device has a microcontroller and controls the operation of the switching device by the microcontroller. The energy storage and regeneration device has one end of a DC power supply terminal connected between the DC capacitor and the modulator of the elevator control system and the other end connected to the DC / AC converter of the switching device. The anode of the DC power supply terminal is connected to the anode of a capacitor, the cathode of a first diode, the cathode of a second diode, a first end of an auxiliary control box unit, and an anode of a supercapacitor module. The supercapacitor module is configured by connecting a plurality of supercapacitors, and the anode of the first diode is connected to the collector of a first switch and the collector of a first switch. a cathode of the first switch diode is connected to a first end of an inductor, an anode of the second diode is connected to a collector of a second switch, a cathode of the second switch diode and a second end of the inductor, a cathode of the DC power supply end is connected to a cathode of the capacitor, an emitter of the first switch, an anode of the first switch diode, a collector of a fourth switch and a cathode of the fourth switch diode, an emitter of the fourth switch and an anode of the fourth switch diode are connected to a second end of the auxiliary control box unit, an emitter of a third switch and an anode of the third switch diode, and an emitter of the second switch and an anode of the second switch diode are connected to the collector of the third switch, a cathode of the third switch diode and a cathode of the supercapacitor module; The protection device is configured by a series connection of a control switch and a resistor, the control switch is connected to the DC capacitor of the elevator control system, the modulator and the DC power supply terminal of the energy storage and regeneration device, the resistor is connected to the supercapacitor module, and the control switch of the protection device is controlled and operated by the microcontroller of the switching device.

[0006] It is preferable that the first switch and the second switch are switched by a PWM (Pulse Width Modulation) method.

[0007] It is preferable that the energy storage and regeneration system is connected in parallel to a DC power supply voltage detection unit corresponding to the DC power supply terminal, and uses the DC power supply voltage detection unit to detect a voltage value of the DC power supply terminal, and is connected in parallel to a supercapacitor module voltage detection unit corresponding to the supercapacitor module, and uses the supercapacitor module voltage detection unit to detect a voltage value of the supercapacitor module. Effect of the Invention

[0008] The coordinated energy storage and regeneration system of the present invention reduces the overall electrical energy consumption, lowers operating costs, and allows passengers in the elevator car to escape smoothly when the commercial power supply is cut off, making it safe to use and providing excellent practical utility in terms of overall usage. [Brief description of the drawings]

[0009] [Figure 1] 1 is a circuit diagram showing the overall configuration of a homogenized energy storage and regeneration system according to an embodiment of the present invention; [Diagram 2] 1 is a circuit diagram of an energy storage and regeneration device of a coordinated energy storage and regeneration system according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a circuit diagram illustrating a circuit operation in a start-up mode of the homogenized energy storage and regeneration system according to an embodiment of the present invention; [Figure 4] FIG. 2 is a circuit diagram illustrating a circuit operation in a charging mode of the homogenous energy storage and regeneration system according to an embodiment of the present invention; [Diagram 5] FIG. 1 is a circuit diagram (1) showing the circuit operation in regeneration mode of the homogenized energy storage and regeneration system according to an embodiment of the present invention. [Figure 6]FIG. 2 is a circuit diagram (2) illustrating the circuit operation in regeneration mode of the homogenous energy storage and regeneration system according to the embodiment of the present invention. [Figure 7] FIG. 3 is a circuit diagram (3) showing the circuit operation in regeneration mode of the homogenous energy storage and regeneration system according to the embodiment of the present invention. [Figure 8] FIG. 1 is a circuit diagram (1) showing the circuit operation in power consumption mode of the homogenous energy storage and regeneration system according to an embodiment of the present invention; [Figure 9] FIG. 2 is a circuit diagram illustrating a discharge mode circuit operation of the energy storage and regeneration device of the homogeneous energy storage and regeneration system according to the embodiment of the present invention; [Figure 10] FIG. 2 is a circuit diagram (2) illustrating the circuit operation in power consumption mode of the homogenous energy storage and regeneration system according to the embodiment of the present invention. [Figure 11] FIG. 2 is a circuit diagram illustrating a circuit operation in rescue mode of the homogenous energy storage and regeneration system according to the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 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.

[0011] Please refer to Fig. 1. Fig. 1 is a circuit diagram showing the overall configuration of a homogenized energy storage and regeneration system according to an embodiment of the present invention. As shown in Fig. 1, the homogenized energy storage and regeneration system according to an embodiment of the present invention includes an elevator control system 1, a switching device 2, an energy storage and regeneration device 3, and a protection device 4.

[0012] In the elevator control system 1, a commercial power supply is connected to a control panel 11 and a rectifier 12. The control panel 11 controls each operation of the entire system. The rectifier 12 is connected in parallel to a DC capacitor 13 and a modulator 14, and the modulator 14 is connected to a motor 15. When the commercial power supply is rectified by the rectifier 12 and modulated by the modulator 14, the motor 15 is rotated, and the elevator car moves up and down via the motor 15.

[0013] The switching device 2 includes a voltage detection unit 21 and a change-over switch 22 provided between the control panel 11 and the rectifier 12 of the elevator control system 1. The voltage detection unit 21 is connected to a commercial power source and detects whether the commercial power source is conductive or not, and the voltage detection unit 21 is connected to one contact of the change-over switch 22. The other contact of the change-over switch 22 is connected to the control panel 11 and the rectifier 12, and the other contact of the change-over switch 22 is connected to a DC-to-AC converter 23. The change-over switch 22 can control the connection and switching between the voltage detection unit 21 or the DC-to-AC converter 23 and the control panel 11 and the rectifier 12. The switching device 2 may have a microcontroller 24, and the operation of the switching device 2 may be controlled by the microcontroller 24.

[0014] Please refer to Fig. 2. Fig. 2 is a circuit diagram of an energy storage and regeneration device of a homogeneous energy storage and regeneration system according to an embodiment of the present invention. As shown in Fig. 2, in the energy storage and regeneration device 3, one end of the DC power supply end 30 is connected between the DC capacitor 13 and the modulator 14 of the elevator control system 1, and the other end is connected to the DC / AC converter 23 of the switching device 2. The DC power supply end 30 is connected in parallel to the DC power supply voltage detection unit 301, and the DC power supply voltage detection unit 301 is used to detect the voltage value of the DC power supply end 30. The anode of the DC power supply end 30 is connected to the anode of the capacitor 31, the cathode of the first diode 321, the cathode of the second diode 322, the first end of the auxiliary control box unit 33, and the anode of the supercapacitor module 34. The supercapacitor module 34 is configured by connecting a plurality of supercapacitors 341, corresponding to the supercapacitor module 34, and the supercapacitor module voltage detection unit 342 is connected in parallel, and the voltage value of the supercapacitor module 34 is detected by using the supercapacitor module voltage detection unit 342. The auxiliary control box unit 33 is a voltage converter, which may be a DC / DC converter. The anode of the first diode 321 is connected to the collector of the first switch 35, the cathode of the first switch diode 351, and the first end of the inductor 36. The anode of the second diode 322 is connected to the collector of the second switch 37, the cathode of the second switch diode 371, and the second end of the inductor 36. The cathode of the DC power supply terminal 30 is connected to the cathode of the capacitor 31, the emitter of the first switch 35, the anode of the first switch diode 351, the collector of the fourth switch 38, and the cathode of the fourth switch diode 381. The emitter of the fourth switch 38 and the anode of the fourth switch diode 381 are connected to the second terminal of the auxiliary control box unit 33, the emitter of the third switch 39, and the anode of the third switch diode 391.The emitter of the second switch 37 and the anode of the second switch diode 371 are connected to the collector of the third switch 39, the cathode of the third switch diode 391, and the cathode of the supercapacitor module 34.

[0015] The protection device 4 is configured by a series connection of a control switch 41 and a resistor 42. The control switch 41 is connected to the DC capacitor 13, the modulator 14, and the DC power supply terminal 30 of the energy storage and regeneration device 3 of the elevator control system 1. The resistor 42 is connected to the supercapacitor module 34. The control switch 41 of the protection device 4 may be controlled and operated by the microcontroller 24 of the switching device 2.

[0016] When the present invention is actually used, it will enter into a startup mode immediately after starting up. The voltage detection unit 21 detects whether commercial power is supplied. When the voltage detection unit 21 detects that commercial power is supplied, the commercial power is supplied to the DC capacitor 13 through the rectifier 12, and charging is performed to the output terminal (see also FIG. 3, which shows the circuit operation of the homogenous energy storage and regeneration system in the startup mode according to an embodiment of the present invention). When the voltage value of the DC power supply terminal 30 detected by the DC power supply voltage detection unit 301 of the energy storage and regeneration device 3 is equal to the voltage value of the supercapacitor module detected by the supercapacitor module voltage detection unit 342, the voltage value of the DC power supply terminal 30 detected by the supercapacitor module voltage detection unit 342 is equal to the voltage value of the supercapacitor module voltage detection unit 342. When it detects that the voltage of the supercapacitor module 34 is higher than that of the DC power supply terminal 30, it immediately performs pre-charging (see FIG. 4, which is a circuit diagram showing the circuit operation of the charge mode of the homogeneous energy storage and regeneration system according to an embodiment of the present invention). Electric energy flows from the DC power supply terminal 30 to the supercapacitor module 34, and flows through the conduction of the second switch diode 371. The first switch 35 is switched to control the magnitude of the current, and the current is controlled to ensure that it is within a suitable range. During the switching process of the first switch 35, the PWM (Pulse Width Modulation) is performed. The pre-charging is completed when the voltage of the supercapacitor module 341 is charged until the threshold voltage reaches a first preset value (the first preset value in this embodiment is 560V). At this time, the voltage of the charging curve rises linearly and the current does not fall attenuate, which greatly shortens the pre-charging time, reduces the loss of thermal energy (power saving), and reduces costs.

[0017] When the elevator starts to be used, it enters regeneration mode and the motor 15 raises or lowers the elevator car. When the elevator car rises when empty and lowers when full, the motor 15 generates electricity and continues to charge each supercapacitor 341 of the supercapacitor module 34 through gravitational potential energy conversion until the voltage exceeds the first preset value (see also FIG. 5, which shows the circuit diagram (1) of the circuit operation of the homogenous energy storage regeneration system in the regeneration mode according to an embodiment of the present invention). At this time, the rectifier diode installed in the rectifier 12 does not allow the regenerative energy to flow back to the input terminal, so the regenerative energy is regeneratively charged to each supercapacitor 341 of the supercapacitor module 34 until it reaches the second preset value (the second preset value in this embodiment is 680V). When the regenerative charging exceeds the second preset value, the microcontroller 24 controls the control switch 41 of the protection device 4 to be conductive to perform discharge protection operation (see also FIG. 6, which shows the circuit operation of the homogeneous energy storage and regeneration system in the regeneration mode according to an embodiment of the present invention), and waits until the voltage value of the supercapacitor module 34 is smaller than the second preset value, and the microcontroller 24 controls the control switch 41 of the protection device 4 to be non-conductive (see also FIG. 7, which shows the circuit operation of the homogeneous energy storage and regeneration system in the regeneration mode according to an embodiment of the present invention), and repeats the above-mentioned operation, so that the supercapacitor module 34 keeps the voltage value at the second preset value state, and the next time electricity is used, power will be preferentially supplied from the supercapacitor module 34.

[0018] When the elevator starts to consume power, in the power consumption mode, the power potential energy stored in the supercapacitor module 34 is higher, so the supercapacitor module voltage detection unit 342 detects the voltage value of the supercapacitor module 34, which is higher than the voltage value of the DC power terminal 30 detected by the DC power voltage detection unit 301, and the supercapacitor module 34 preferentially supplies the required power to the motor 15 (see also FIG. 8, which shows the circuit diagram (1) of the power consumption mode of the homogenized energy storage and regeneration system according to an embodiment of the present invention). The electric energy flows from the supercapacitor module 34 to the DC power terminal 30 (see also FIG. 9, which shows the circuit diagram of the energy storage and regeneration device of the homogenized energy storage and regeneration system according to an embodiment of the present invention in the discharge mode). The electric energy flows through the first switch diode 351, and the magnitude of the current is controlled by switching the second switch 37 to ensure that the current is within an appropriate range. The switching of the second switch 37 is performed in a PWM (Pulse Width Modulation) mode. When the second switch 37 is off, there is charged energy on the inductor 36, so the second diode 322 is used as a path to release the high voltage on the inductor 36 when high voltage is accumulated on the inductor 36, and the magnitude of the entire discharge current can be controlled by simply switching the second switch 37. During the discharge process, when the voltage of the supercapacitor module 34 is lower than the first preset value, the power potential energy of the supercapacitor module 34 is lower than that of the DC power supply terminal 30, so the supercapacitor module 34 does not continue to discharge, and the power consumed by the motor 15 is supplied from the commercial power supply (see also the circuit diagram (2) of FIG. 10 showing the circuit operation of the power consumption mode of the homogeneous energy storage and regeneration system according to an embodiment of the present invention).

[0019] When the supply of commercial power is stopped and the electricity is cut off, the system enters rescue mode. When the voltage detection unit 21 cannot detect the input of commercial power (see also FIG. 11, which is a circuit diagram showing the circuit operation of the coordinated energy storage and regeneration system in rescue mode according to an embodiment of the present invention), the microcontroller 24 controls and switches the change-over switch 22 to connect the DC / AC converter 23 to the control panel 11 and the rectifier 12, the electric energy stored in the supercapacitor module 34 is converted by the DC / AC converter 23, the necessary electricity is supplied to the entire elevator control system 1, and the motor 15 raises or lowers the elevator car to the set floor or the nearest floor, and the passengers in the elevator car are safely evacuated.

[0020] As can be seen from the above, compared with the prior art, the homogeneous energy storage and regeneration system of the present invention not only can charge the supercapacitor module when the commercial power is normally supplied, but also can assist the supercapacitor module in supplying electrical energy while the elevator car is moving, thereby reducing the overall electrical energy consumption and lowering the operating costs; when the commercial power supply stops supplying electricity, the supercapacitor module can be used to supply electrical energy to the elevator car to move it, allowing the passengers in the elevator car to escape smoothly, which can be used safely and has excellent practical utility in terms of overall use.

[0021] 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]

[0022] 1. Elevator control system 2 Switching device 3. Energy storage and regeneration device 4 Protective device 11 Control Panel 12 Rectifier 13 DC Capacitor 14 Modulator 15 Motor 21 Voltage detection unit 22 Changeover switch 23 DC-to-AC converter 24 Microcontrollers 30 DC power supply terminal 31 Capacitor 33 Auxiliary Control Box Unit 34 Supercapacitor Module 35 First Switch 36 Inductor 37 Second Switch 38 The Fourth Switch 39 The Third Switch 41 Control Switch 42 Resistance 301 DC power supply voltage detection unit 321 First Diode 322 Second Diode 341 Supercapacitor 342 Supercapacitor module voltage detection unit 351 First Switch Diode 371 Second Switch Diode 381 4th Switch Diode 391 Third Switch Diode

Claims

1. A homogeneous energy storage and regeneration system including an elevator control system, a switching device, a storage and regeneration device, and a protection device, The elevator control system connects a commercial power supply to a control panel and a rectifier, the control panel controls each operation of the entire system, the rectifier is connected in parallel with a DC capacitor and a modulator, the modulator is connected to a motor, the commercial power supply is rectified by the rectifier and modulated by the modulator to rotate the motor, and the elevator car moves up and down via the motor, the switching device includes a voltage detection unit and a change-over switch provided between the control panel and the rectifier of the elevator control system, the voltage detection unit is connected to a commercial power source and detects whether the commercial power source is conductive, the voltage detection unit is connected to one contact of the change-over switch and connects the other contact of the change-over switch to the control panel and the rectifier, and connects the other contact of the change-over switch to a DC-to-AC converter, the change-over switch can control connection switching between the voltage detection unit or the DC-to-AC converter and the control panel and the rectifier, the switching device has a microcontroller and the operation of the switching device is controlled by the microcontroller, The energy storage and regeneration device has one end of a DC power supply terminal connected between the DC capacitor and the modulator of the elevator control system, and the other end connected to the DC / AC converter of the switching device, and an anode of the DC power supply terminal connected to an anode of a capacitor, a cathode of a first diode, a cathode of a second diode, a first end of an auxiliary control box unit, and an anode of a supercapacitor module, the supercapacitor module being configured by connecting a plurality of supercapacitors, an anode of the first diode connected to a collector of a first switch, a cathode of a first switch diode, and a first end of an inductor, and an anode of the second diode connected to a collector of a second switch, a cathode of a first switch diode, and a first end of an inductor. a cathode of the first switch diode and the second end of the inductor; a cathode of the DC power supply end is connected to the cathode of the capacitor, the emitter of the first switch, the anode of the first switch diode, the collector of a fourth switch and the cathode of the fourth switch diode; the emitter of the fourth switch and the anode of the fourth switch diode are connected to the second end of the auxiliary control box unit, the emitter of a third switch and the anode of the third switch diode; and the emitter of the second switch and the anode of the second switch diode are connected to the collector of the third switch, the cathode of the third switch diode and the cathode of the supercapacitor module; The protection device is configured by a series connection of a control switch and a resistor, the control switch is connected to the DC capacitor, the modulator and the DC power supply terminal of the energy storage and regeneration device of the elevator control system, and the resistor is connected to the supercapacitor module, and the control switch of the protection device is controlled and operated by the microcontroller of the switching device. Co-located energy storage and regeneration system.

2. 2. The homogenous energy storage and regeneration system according to claim 1, wherein the first switch and the second switch are switched by a PWM (Pulse Width Modulation) method.

3. 2. The homogeneous energy storage and regeneration system of claim 1, wherein the energy storage and regeneration system is configured to: connect a DC power supply voltage detection unit in parallel to the DC power supply terminal; detect a voltage value of the DC power supply terminal using the DC power supply voltage detection unit; connect a supercapacitor module voltage detection unit in parallel to the supercapacitor module; and detect a voltage value of the supercapacitor module using the supercapacitor module voltage detection unit.

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