Energy storage elevator regeneration system

Abstract

To provide an energy storage elevator regeneration system that reduces operating costs, increases safety in use, and increases practicality over the entire range of use. [Solution] This energy storage elevator regenerative system mainly combines a regenerative energy storage system 20 with an elevator control system 1, in which a supercapacitor module 206 is connected to a DC / DC bidirectional converter 207 installed in the regenerative energy storage system, and when power is normally supplied from the commercial power source, the supercapacitor module is charged and auxiliary electrical energy is supplied by the supercapacitor module while the elevator car is moving. When power is not normally supplied from the commercial power source or when an accident such as an earthquake occurs, electrical energy is supplied by the supercapacitor module, the elevator car is stopped at the nearest floor, and passengers in the elevator car are quickly evacuated.

Description

[Technical field]

[0001] The present invention relates to an energy storage elevator regeneration system, and more specifically to a novel design for an energy storage elevator regeneration system, which not only charges a supercapacitor module when power is normally supplied from the commercial power source, but also uses the supercapacitor module to supply auxiliary electrical energy while the elevator car is moving, thereby reducing overall electrical energy consumption and lowering operating costs; and even if power is not normally supplied from the commercial power source or an accident such as an earthquake occurs, the supercapacitor module can continue to supply electrical energy, stop the elevator car at the nearest floor, and quickly evacuate passengers in the elevator car, thereby improving safety in use and practicality in overall use. [Background technology]

[0002] In modern society, due to the concentration of population, various buildings are becoming taller and the number of floors is increasing. For this reason, elevator facilities are universally installed in various buildings to make it easier for people to move up and down the floors and to get to the desired floor. Summary of the Invention [Problem to be solved by the invention]

[0003] However, the weight of the elevator car is very heavy, and when a user is in the car, the weight must be even heavier, resulting in high power consumption during use of the elevator car. Related companies have been researching and developing various energy-saving devices for elevator cars, enabling more effective use of limited electrical energy.

[0004] Therefore, the inventor believed that the above-mentioned shortcomings could be improved, and after extensive research, he came up with the present invention, which effectively improves the above-mentioned problems through rational design.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide an energy storage elevator regenerative system.

[0006] The present invention has been made in view of the above circumstances, and aims to solve the above problems. That is, the present invention aims to provide an energy storage elevator regeneration system. According to the present invention, when the power supply from the commercial power source is normal, not only the supercapacitor module is charged, but also the supercapacitor module supplies auxiliary electric energy while the elevator car is moving, thereby reducing the overall electric energy consumption and the usage cost. Furthermore, even if the power supply from the commercial power source is not normal or an accident such as an earthquake occurs, the supercapacitor module supplies electric energy, stops the elevator car at the nearest floor, and quickly evacuates passengers in the elevator car. The safety of use is improved, and the practicality is improved in general use. [Means for solving the problem]

[0007] To achieve the above objectives, the energy storage elevator regeneration system of the present invention adopts the following measures: The energy storage elevator regenerative system according to one aspect of the present invention is mainly a regenerative energy storage system connected to an elevator control system of an elevator device. The elevator control system is provided with an elevator control panel, which is provided with a motor driver and a control panel controller. The control panel controller controls the operation of the motor driver to connect the motor driver to a motor, which drives the elevator car to move. The motor is connected to an encoder, which can measure the angle and rotation speed of the motor. The dynamic behavior of the elevator car is linearly proportional to the driving direction of the motor, and a brake device is connected to the motor. The regenerative energy storage system is provided with a microcontroller, which is electrically connected to the control panel controller of the elevator control panel of the elevator control system and the encoder of the motor. The microcontroller controls the operation of the motor driver through the control panel controller, and controls the microcontroller to receive the angle and rotation speed of the motor measured by the encoder. A voltage detection unit and a switch are respectively connected to the microcontroller. The voltage detection unit is connected to a commercial power source, and detects the input status of the commercial power source through the voltage detection unit, and the microcontroller receives the detection signal of the voltage detection unit, the switch is connected to the motor driver, and the microcontroller controls the switching operation of the switch. A DC / AC bidirectional converter is connected to the microcontroller, and the microcontroller controls the operation of the DC / AC bidirectional converter. The DC / AC bidirectional converter is respectively connected to the switch and a first step-down module, and the first step-down module is connected to a supercapacitor module. A DC / DC bidirectional converter is connected to the supercapacitor module, and the DC / DC bidirectional converter is connected to the motor driver of the elevator control panel. A second step-down module and a step-up circuit are respectively connected to the first step-down module, the second step-down module is connected to the encoder of the motor, and the second step-down module supplies the necessary power to the encoder. The step-up circuit is respectively connected to the microcontroller, the control switch, and the dynamic guiding circuit, and the microcontroller controls the step-up circuit to perform a step-up operation. The control switch is connected to the brake device, and the dynamic guiding circuit is connected to the microcontroller and the motor so that the control switch can control the operation of the brake device and the microcontroller can control the motor through the dynamic guiding circuit.

[0008] In addition, in the energy storage elevator regenerative system of the present invention, an earthquake sensor is connected to the microcontroller, and the earthquake sensor detects the occurrence of an earthquake and transmits a signal to the microcontroller.

[0009] In addition, in the energy storage elevator regeneration system of the present invention, a DC / DC bidirectional converter circuit is installed in the DC / DC bidirectional converter, a digital compensator is connected to the output end of the DC / DC bidirectional converter circuit, and a switch driver is connected to the digital compensator, and the switch driver is connected to send feedback to the DC / DC bidirectional converter circuit.

[0010] At least the following points will become apparent from the following specification and drawings. [Brief description of the drawings]

[0011] [Figure 1] 1 is a schematic diagram of an elevator energy storage regenerative system according to an embodiment of the present invention; FIG. [Diagram 2] 1 is a schematic diagram showing a DC / DC bidirectional converter according to an embodiment of the present invention; [Diagram 3] 1 is a schematic diagram showing a first operating state of an energy storage elevator regenerative system in accordance with an embodiment of the present invention; FIG. [Figure 4] 4 is a schematic diagram showing a second operating state of the energy storage elevator regeneration system in accordance with an embodiment of the present invention; FIG. [Diagram 5] 4 is a schematic diagram showing a third operating state of the energy storage elevator regeneration system in accordance with an embodiment of the present invention; [Figure 6] 4 is a schematic diagram showing a fourth operating state of the energy storage elevator regenerative system in accordance with an embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not limited to the following examples, and can be modified as desired without departing from the spirit and scope of the present invention.

[0013] FIG. 1 is a schematic diagram showing an elevator energy storage regenerative system according to an embodiment of the present invention. The present invention mainly relates to an elevator control system (1) of an elevator device, which is connected to a regenerative energy storage system (20). The elevator control system (1) is provided with an elevator control panel (11), which is provided with a motor driver (111) and a control panel controller (112). The control panel controller (112) controls the operation of the motor driver (111) to connect the motor driver (111) to a motor (12), which drives the motor (12) to move the elevator car. An encoder (121) is connected to the motor (12), which can measure the angle and rotation speed of the motor (12), and the dynamic behavior of the elevator car is linearly proportional to the driving direction of the motor (12), and a brake device (13) is connected to the motor (12).

[0014] The regenerative energy storage system (20) is provided with a microcontroller (201), which is electrically connected to the control panel controller (112) of the elevator control panel (11) of the elevator control system (1) and the encoder (121) of the motor (12), and the microcontroller (201) controls the operation of the motor driver (111) through the control panel controller (112) and controls the microcontroller (201) to receive the angle and rotation speed of the motor (12) measured by the encoder (121). A voltage detection unit (202) and a switch (203) are respectively connected to the microcontroller (201), and the voltage detection unit (202) is connected to a commercial power source, and the voltage detection unit (202) detects the input status of the commercial power source, and the microcontroller (201) receives the detection signal of the voltage detection unit (202). The switch (203) is connected to the motor driver (111), and the microcontroller (201) controls the switching operation of the switch (203). A DC / AC bidirectional converter (204) is connected to the microcontroller (201), and the microcontroller (201) controls the operation of the DC / AC bidirectional converter (204). The DC / AC bidirectional converter (204) is connected to the switch (203) and a first step-down module (205), respectively, and the first step-down module (205) can step-down an input voltage to 24V. The first step-down module (205) is connected to a supercapacitor module (206), and a DC / DC bidirectional converter (207) is connected to the supercapacitor module (206), and the DC / DC bidirectional converter (207) is connected to the motor driver (111) of the elevator control panel (11). A second step-down module (208) and a step-up circuit (209) are connected to the first step-down module (205), and the second step-down module (208) steps down an input voltage to 5V.The second step-down module (208) is connected to the encoder (121) of the motor (12), and the second step-down module (208) supplies the necessary power to the encoder (121). The step-up circuit (209) is connected to the microcontroller (201), a control switch (210), and a dynamic guiding circuit (211), and the microcontroller (201) controls the step-up circuit (209) to perform a step-up operation. The control switch (210) is connected to the brake device (13), and the control switch (210) can control the operation of the brake device (13). The dynamic guiding circuit (211) is connected to the microcontroller (201) and the motor (12), and the microcontroller (201) controls the motor (12) to rotate through the dynamic guiding circuit (211). In addition, an earthquake sensor (212) is connected to the microcontroller (201), and the earthquake sensor (212) detects the occurrence of an earthquake and transmits a signal to the microcontroller (201).

[0015] 2 is a schematic diagram showing a DC / DC bidirectional converter (207) according to an embodiment of the present invention. A DC / DC bidirectional converter circuit (2071) is installed in the DC / DC bidirectional converter (207), a digital compensator (2072) is connected to the output end of the DC / DC bidirectional converter circuit (2071), a switch driver circuit (2073) is connected to the digital compensator (2072), and the switch driver circuit (2073) is connected to send feedback to the DC / DC bidirectional converter circuit (2071). The design process of the digital compensator (2072) will be described below. 1. The mathematical expressions for the states constituting the DC / DC bidirectional converter circuit (2071) are shown below. JPEG0003249740000002.jpg52150Usage state averaging method gives the following: JPEG0003249740000003.jpg881502.Using the A, B, C, and E matrices of the above state equation, the open loop transfer function of the duty ratio signal and the output voltage is listed. The equation is as follows: JPEG0003249740000004.jpg46150 JPEG0003249740000005.jpg211504. The digital compensator (2072) is designed to adopt a Type III transfer function as follows: JPEG0003249740000006.jpg83150The design steps are as follows: JPEG0003249740000007.jpg155150 JPEG0003249740000008.jpg41150The program logic of the digital compensator is shown below. JPEG0003249740000009.jpg6150In the formula, e[n] is the digital sampling error signal, and d[n] is the digital duty ratio.

[0016] In this way, in the process of using the present invention, the voltage detection unit (202) of the regenerative energy storage system (20) continuously detects whether the commercial power supply is normally supplied. When the commercial power supply is normally supplied to the elevator control panel (11), the motor driver (111) drives the motor (12) to rotate and drive the elevator car to move up or down. In the example of Figure 3, the motor (12) rotates to drive the elevator car to move in one direction, either up or down, and when the elevator car is moving up when empty or down when full, the motor (12) generates electricity, and the generated electrical energy is transmitted to the supercapacitor module (206) by the DC / DC bidirectional converter (207), which recovers electrical energy [potential energy conversion] and charges the supercapacitor module (206). When the motor (12) rotates to drive the elevator car to move in another direction, the supercapacitor module (206) releases the stored electrical energy and supplies it to the motor (12) via the DC / DC bidirectional converter (207) to rotate the motor (12), driving the elevator car to move and consuming less electrical energy.

[0017] 4 is a schematic diagram showing a second operating state of the energy storage elevator regenerative system according to an embodiment of the present invention. When the voltage detection unit (202) detects an abnormality in the commercial power supply voltage (e.g., a voltage drop), the voltage detection unit (202) sends a signal to the microcontroller (201), which controls the microcontroller (201) to switch the switch (203). At the same time, the microcontroller (201) controls the DC / AC bidirectional converter (204) to operate, and the electric energy stored in the supercapacitor module (206) is converted by the first step-down module (205) and the DC / AC bidirectional converter (204), and then supplied to the elevator control panel (11) by the switch (203). The motor driver (111) drives the motor (12) to rotate, and drives the elevator car to move up or down to the nearest floor, so as to safely evacuate the people in the elevator car.

[0018] FIG. 5 is a schematic diagram showing a third operating state of the energy storage elevator regenerative system according to an embodiment of the present invention. When the voltage detection unit (202) detects an abnormality in the commercial power supply voltage (e.g., voltage drop), and the supercapacitor module (206) supplies power, the microcontroller (201) controls the boost circuit (209) to gradually boost the voltage, and supplies electrical energy to the brake device (13) through the control switch (210), gradually opens the brake, slides the elevator car, and then controls the brake through the control switch (210) to adjust the sliding speed of the elevator car, so that the elevator car moves to the nearest floor and stops. FIG. 6 is a schematic diagram showing a fourth operating state of the energy storage elevator regenerative system according to an embodiment of the present invention. In the example of FIG. 6, if the elevator car is not moving in this state, indicating that the weight of the elevator car and the counterweight are in equilibrium, the microcontroller (201) controls the dynamic guide circuit (211) to operate and drives the motor (12) to operate, thus breaking this equilibrium state and moving the elevator car to the nearest floor and stopping it.

[0019] An earthquake sensor (212) is connected to the microcontroller (201). When an earthquake occurs, the earthquake sensor (212) detects the occurrence of the earthquake and transmits a signal to the microcontroller (201). The microcontroller (201) then controls the elevator car to move to the nearest floor and stop there, facilitating the quick evacuation of passengers in the elevator car.

[0020] In summary, from the description of the use and implementation of the present invention, compared with the prior art, the present invention not only mainly charges the supercapacitor module when the elevator car is normally powered by the commercial power supply, but also uses the supercapacitor module to supply auxiliary electrical energy while the elevator car is moving, thereby reducing the overall electrical energy consumption and the usage cost. Furthermore, even if the commercial power supply is not normally powered or an accident such as an earthquake occurs, the supercapacitor module can still supply electrical energy to stop the elevator car at the nearest floor and quickly evacuate the passengers in the elevator car. This improves the safety of use and the practicality of the overall use.

[0021] The above embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit of the present invention, and that the present invention includes equivalents thereof. [Explanation of symbols]

[0022] 1. Elevator control system 11 Elevator control panel 111 Motor Driver 112 Control panel control device 12 Motor 121 Encoder 13 Brake system 20 Regenerative Energy Storage System 201 Microcontroller 202 Voltage detection unit 203 Switch 204 DC / AC bidirectional converter 205 First Step-Down Module 206 Supercapacitor Module 207 DC / DC bidirectional converter 2071 DC / DC bidirectional converter circuit 2072 Digital Compensator 2073 Switch driver circuit 208 Second step-down module 209 Boost circuit 210 Control Switch 211 Dynamic Guide Circuit 212 Earthquake Sensor

Claims

1. An energy storage elevator regenerative system, comprising: a regenerative energy storage system connected to an elevator control system of an elevator device, The elevator control system includes an elevator control panel, a motor driver and a control panel controller respectively installed in the elevator control panel, the control panel controller controlling the operation of the motor driver to connect the motor driver to a motor, the motor being driven to move an elevator car, an encoder connected to the motor, the encoder being capable of measuring the angle and rotation speed of the motor, the dynamic behavior of the elevator car being linearly proportional to the driving direction of the motor, and a brake device connected to the motor, The regenerative energy storage system is provided with a microcontroller, the microcontroller is electrically connected to the control panel controller of the elevator control panel of the elevator control system and the encoder of the motor, the microcontroller controls the operation of the motor driver through the control panel controller and controls the microcontroller to receive the angle and rotation speed of the motor measured by the encoder, a voltage detection unit and a switch are respectively connected to the microcontroller, the voltage detection unit is connected to a commercial power source and detects the input status of the commercial power source through the voltage detection unit, the microcontroller receives the detection signal of the voltage detection unit, the switch is connected to the motor driver, the microcontroller controls the switching operation of the switch, a DC / AC bidirectional converter is connected to the microcontroller and the microcontroller controls the operation of the DC / AC bidirectional converter, the DC / AC bidirectional converter is connected to the switch and a first step-down module and a motor driver of the elevator control panel, the first step-down module is connected to a supercapacitor module, a DC / DC bidirectional converter is connected to the supercapacitor module, the DC / DC bidirectional converter is connected to the motor driver of the elevator control panel, the first step-down module is connected to a second step-down module and a step-up circuit, the second step-down module is connected to the encoder of the motor, the second step-down module supplies required power to the encoder, the step-up circuit is connected to the microcontroller, a control switch, and a dynamic guiding circuit, respectively, the microcontroller controls the step-up circuit to perform a step-up operation, the control switch is connected to the brake device, the control switch can control the operation of the brake device, and the dynamic guiding circuit is connected to the microcontroller and the motor so that the microcontroller can control the motor through the dynamic guiding circuit.

2. 2. The energy storage elevator regenerative system according to claim 1, wherein the microcontroller is connected to an earthquake sensor, the earthquake sensor detects the occurrence of an earthquake and transmits a signal to the microcontroller.

3. 2. The energy storage elevator regeneration system according to claim 1, wherein the DC / DC bidirectional converter is provided with a DC / DC bidirectional converter circuit, a digital compensator is connected to an output end of the DC / DC bidirectional converter circuit, the digital compensator is connected to a switch driving circuit, and the switch driving circuit is connected to send a feedback to the DC / DC bidirectional converter circuit.

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