Multi-direct-current power supply input elevator control method and control device

Abstract

The invention relates to the technical field of elevator control, and particularly discloses a multi-direct-current power supply input elevator control method and device. The method comprises the steps that power supply parameters of each direct-current input power supply are obtained; performing power supply capability evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result; acquiring the power supply demand of the current elevator; generating a multi-input power supply scheme based on the power supply demand and the evaluation result; and executing corresponding power supply operation based on the multi-input power supply scheme. On the basis of a traditional single access power supply, the multi-direct-current input power supply is accessed to the direct-current elevator, so that the elevator is allowed to run in a most economical mode, the use cost of the elevator is reduced, and customer requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator control, and in particular to an elevator control method with multiple direct current power supply inputs and an elevator control device with multiple direct current power supply inputs. Background Art

[0002] In modern urban buildings, elevators are key facilities for vertical transportation, and their safety, comfort and energy efficiency have always been important considerations in design and manufacturing. In traditional elevator power supply methods, AC power supply systems are basically used because AC has good energy transmission advantages.

[0003] With the continuous development of energy storage technology and new energy technology, DC power supply will occupy an increasingly large proportion in people's daily lives, which will have an impact on the power supply system of elevators. On the other hand, elevator systems with DC power input usually use DC motors as drive devices. This system is more common in early elevators. The advantages of DC motors include excellent starting and braking performance, smooth speed control and high efficiency, so they are more in line with customers' actual elevator experience requirements, thus giving rise to the application demand for DC elevators.

[0004] However, in actual application, the current DC power supply equipment is still not perfect, and its economic efficiency is still not comparable to that of AC power, so it is difficult to implement a single DC power supply. At present, there is no elevator control solution for multiple DC input power supplies, so it cannot meet the actual needs of enterprises. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems existing in the prior art, the embodiments of the present invention provide an elevator control method and a control device with multiple DC power supply inputs. By connecting multiple DC input power supplies to the DC elevator on the basis of the traditional single access power supply, it allows the elevator to operate in the most economical way, reduces the cost of elevator use, and meets customer needs.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides an elevator control method with multiple DC power supply inputs, the method comprising: obtaining power supply parameters of each DC input power supply; performing power supply capacity evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result; obtaining the power supply demand of the current elevator; generating a multi-input power supply scheme based on the power supply demand and the evaluation result; and performing corresponding power supply operations based on the multi-input power supply scheme.

[0007] Preferably, performing power supply capability evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result includes: determining a parameter weight of each parameter based on the importance of each parameter in the power supply parameters; acquiring historical input data of each DC input power supply; determining unit input data of each DC input power supply within a preset time period based on the historical input data, the unit input data including unit input intensity, unit input duration, and input regularity; performing power supply capability evaluation on each DC input power supply based on the unit input intensity, the unit input duration, the input regularity and the parameter weight to generate an evaluation result.

[0008] Preferably, the generating of a multi-input power supply scheme based on the power supply demand and the evaluation result includes: determining the individual electricity cost of each DC input power supply; determining a preliminary input power supply configuration based on the power supply demand and the evaluation result; determining a comprehensive electricity cost of the preliminary input power supply configuration based on the individual electricity cost; optimizing the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; optimizing the preliminary input power supply configuration based on the optimized electricity cost to generate a multi-input power supply scheme.

[0009] Preferably, the power supply requirement includes power supply current intensity, power supply duration and power supply power, and determining the preliminary input power supply configuration based on the power supply requirement and the evaluation result includes: screening each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminary screened power supply; screening the preliminary screened power supply based on the power supply duration to obtain a re-screened power supply; and combining and configuring the re-screened power supplies based on the power supply power to generate a preliminary input power supply configuration.

[0010] Preferably, the method also includes: after generating the multi-input power supply scheme, evaluating the riding comfort of the multi-input power supply scheme based on the unit input duration, and generating a comfort evaluation result; optimizing the multi-input power supply scheme based on preset comfort requirements and the comfort evaluation result, and generating an optimized multi-input power supply scheme.

[0011] Correspondingly, the present invention also provides an elevator control device with multiple DC power supply inputs, the device comprising: a parameter acquisition unit, used to acquire the power supply parameters of each DC input power supply; an evaluation unit, used to perform power supply capacity evaluation on each DC input power supply based on the power supply parameters and generate an evaluation result; a demand acquisition unit, used to acquire the power supply demand of the current elevator; a scheme generation unit, used to generate a multi-input power supply scheme based on the power supply demand and the evaluation result; and a power supply unit, used to perform corresponding power supply operations based on the multi-input power supply scheme.

[0012] Preferably, the evaluation unit includes: a weight determination module, used to determine the parameter weight of each parameter based on the importance of each parameter in the power supply parameters; a historical data acquisition module, used to acquire the historical input data of each DC input power supply; a unit data determination module, used to determine the unit input data of each DC input power supply within a preset time period based on the historical input data, the unit input data including unit input intensity, unit input duration, input regularity; an evaluation module, used to evaluate the power supply capacity of each DC input power supply based on the unit input intensity, the unit input duration, the input regularity and the parameter weight, and generate an evaluation result.

[0013] Preferably, the scheme generating unit comprises: a first cost determination module, used to determine the individual electricity cost of each DC input power supply; a preliminary configuration module, used to determine the preliminary input power supply configuration based on the power supply demand and the evaluation result; a second cost determination module, used to determine the comprehensive electricity cost of the preliminary input power supply configuration based on the individual electricity cost; an optimization module, used to optimize the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; and a scheme generating module, used to optimize the preliminary input power supply configuration based on the optimized electricity cost to generate a multi-input power supply scheme.

[0014] Preferably, the power supply requirement includes power supply current intensity, power supply duration and power supply power, and the preliminary configuration module is specifically used to: screen each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminary screened power supply; screen the preliminary screened power supply based on the power supply duration to obtain a re-screened power supply; and combine and configure the re-screened power supplies based on the power supply power to generate a preliminary input power supply configuration.

[0015] Preferably, the device also includes a comfort optimization unit, which is specifically used to: after generating the multi-input power supply scheme, evaluate the riding comfort of the multi-input power supply scheme based on the unit input duration, and generate a comfort evaluation result; optimize the multi-input power supply scheme based on preset comfort requirements and the comfort evaluation result, and generate an optimized multi-input power supply scheme.

[0016] Through the technical solution provided by the present invention, the present invention has at least the following technical effects: By combining the actual situation of DC power supply, configuring a variety of DC input power supplies for elevators can effectively make up for the technical problems of insufficient power supply capacity or high power supply cost of a single DC input power supply. By evaluating the power supply capacity of each DC input power supply and configuring the elevator DC input in the most reliable and economical way, the actual needs of users are effectively met and the user experience is improved.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0019] Figure 1 is a specific implementation flow chart of the elevator control method with multiple DC power supply inputs provided by an embodiment of the present invention;

[0020] Figure 2 is a specific implementation flow chart of performing power supply capability evaluation on each DC input power supply provided by an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of an elevator control device with multiple DC power supply inputs provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0023] The terms "system" and "network" in the embodiments of the present invention can be used interchangeably. "Multiple" means two or more than two. In view of this, "multiple" can also be understood as "at least two" in the embodiments of the present invention. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship. In addition, it should be understood that in the description of the embodiments of the present invention, the words "first", "second", etc. are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0024] The background technology of the present invention is first introduced below.

[0025] In traditional elevator systems, elevators driven by AC 380V or AC 220V are mainly used. However, with the continuous development of new energy technologies, there are more and more DC power supplies, DC microgrids and other power supplies, and their power supply costs are lower. At the same time, the feedback power in traditional elevator systems cannot be directly used because it is DC power, so it is often wasted. Therefore, in order to make the elevator system adapt to a wider range of input power supplies and achieve lower use costs and lower energy consumption, technicians are paying more and more attention to multi-input DC power supplies. However, the existing technology does not have an elevator system that controls multi-input DC power supplies, so it cannot meet actual needs.

[0026] See also Figure 1 The embodiment of the present invention provides a method for controlling an elevator with multiple DC power supply inputs, the method comprising: S10) obtaining power supply parameters of each DC input power supply; S20) performing power supply capability evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result; S30) obtaining the current power supply demand of the elevator; S40) generating a multi-input power supply solution based on the power supply demand and the evaluation result; S50) Execute a corresponding power supply operation based on the multi-input power supply scheme.

[0027] In a possible implementation, the power supply parameters of each DC input power supply are first obtained, and the DC input power supply includes but is not limited to a DC input power supply after AC conversion of the mains, a DC microgrid, a DC energy storage system, an energy feedback device (for feedback of regenerated electric energy) and other DC input power supplies, such as DC power input from the power battery of a new energy vehicle. The above power supply parameters include but are not limited to the maximum input current, maximum input power, input stability (continuous input time, input regularity) and other parameters of the DC input power supply. For example, for the DC input power supply after the mains conversion, its continuous input time is infinite; for the DC energy storage system, its continuous input time is, for example, 2h; for the energy feedback device, its continuous input time is, for example, 30s, etc. For different DC input power supplies, the different input parameters have different effects on the normal operation and economic operation of the elevator system, which will affect the subsequent control strategy.

[0028] After obtaining the power supply parameters of each DC input power supply, perform power supply capability evaluation on each DC input power supply and generate evaluation results. Figure 2 In an embodiment of the present invention, the step of performing power supply capability evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result includes: S21) determining a parameter weight of each parameter based on the importance of each parameter in the power supply parameters; S22) obtaining historical input data of each DC input power source; S23) determining unit input data of each DC input power source within a preset time period based on the historical input data, wherein the unit input data includes unit input intensity, unit input duration, and input regularity; S24) Evaluating the power supply capability of each DC input power source based on the unit input intensity, the unit input duration, the input regularity and the parameter weight, and generating an evaluation result.

[0029] In a possible implementation, the parameter weight of each parameter is first determined according to the importance of each parameter in the power supply parameters. For example, in this embodiment, the importance of each power supply parameter is first scored on a 10-point scale. For example, the maximum input current is the most important parameter, which is related to whether it can be used to provide input current, so it is scored 10 points. The input regularity (whether the input is stable input or accidental input, for example, the regenerative electric energy belongs to the energy generated according to the operation status of the elevator, and the elevator operation status occurs accidentally according to the user's use, so it is an accidental input) plays a more important role in the stability of the input, so it is set to 7 points. The maximum input power does not have a substantial impact on the final operation of the elevator, so it is set to 3 points, etc. After completing the above scoring, it is processed in a normalized manner to obtain the value of each power supply parameter, and the value is used as the parameter weight of each power supply parameter.

[0030] Then, the historical input data of each DC input power supply is obtained, and the unit input data of each DC input power supply within a preset time period is further determined. The unit input data specifically includes the unit input current, the unit input duration, the input regularity, etc. Finally, the power supply capacity is evaluated according to the above unit input data and parameter weights to generate an evaluation result. Specifically, the unit input current is multiplied by its corresponding weight to obtain a current evaluation value, and the unit input duration is multiplied by the corresponding weight to obtain a duration evaluation value. According to the input regularity, for example, the input duty cycle of the regenerative electric energy is used as its input regularity within a unit time, and the input regularity is multiplied by the sum of the above current evaluation value and the duration evaluation value, so as to obtain the evaluation result.

[0031] In an embodiment of the present invention, the power supply capacity of each DC input power supply is evaluated in combination with its actual input characteristics, thereby providing data support for the subsequent evaluation of the demand support capacity of each DC input power supply. In the subsequent power supply control process, the optimal control solution that meets the stable operation of the elevator can be generated based on the above data support, avoiding abnormal elevator operation caused by frequent power switching and power shortage and avoiding affecting the elevator riding experience.

[0032] After obtaining the evaluation results, the current power supply demand of the elevator is further obtained, and a multi-input power supply solution is finally generated. In actual application, if it is only to meet the needs of stable operation of the elevator, the algorithm may eventually give priority to a multi-input power supply solution that uses a DC microgrid or a large energy storage system as a DC input. However, although DC power sources such as renewable energy and new energy vehicle power battery energy are unstable and sporadic, they can provide lower-cost or even free-cost input, so they can effectively reduce the cost of elevator use and meet users' low-power consumption needs.

[0033] In an embodiment of the present invention, generating a multi-input power supply scheme based on the power supply demand and the evaluation result includes: determining the individual electricity cost of each DC input power supply; determining a preliminary input power supply configuration based on the power supply demand and the evaluation result; determining a comprehensive electricity cost of the preliminary input power supply configuration based on the individual electricity cost; optimizing the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; optimizing the preliminary input power supply configuration based on the optimized electricity cost to generate a multi-input power supply scheme.

[0034] In a possible implementation, the individual electricity cost of each DC input power supply is first determined. For example, for a DC input power supply directly converted from the mains, its individual electricity cost can be determined based on the real-time price and conversion efficiency of the mains; for a DC energy storage system, since it can only be charged during the off-peak period of electricity prices, thereby obtaining a relatively low electricity cost, its individual electricity cost can be determined based on the off-peak electricity price and conversion efficiency; for renewable electric energy, since it is converted from the residual kinetic energy or potential energy of the elevator, its individual electricity cost is zero. In the process of generating a power supply plan, a preliminary input power supply configuration is first determined based on the above power supply demand and evaluation results. The preliminary input power supply configuration, for example, directly determines the optimal input power supply configuration plan based on the maximum input current demand and duration demand of the power supply demand, such as directly using a DC energy storage system combined with a DC microgrid as the preliminary input power supply configuration.

[0035] In an embodiment of the present invention, the power supply requirement includes power supply current intensity, power supply duration and power supply power, and determining the preliminary input power supply configuration based on the power supply requirement and the evaluation result includes: screening each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminary screened power supply; screening the preliminary screened power supply based on the power supply duration to obtain a re-screened power supply; and combining and configuring the re-screened power supplies based on the power supply power to generate a preliminary input power supply configuration.

[0036] Specifically, each DC input power supply is first screened according to the power supply current intensity and the evaluation results to obtain a DC input power supply that can meet the basic parameters of the elevator operation, and obtain a power supply after preliminary screening; then the power supply after preliminary screening is screened according to the power supply duration, so as to give priority to the DC input power supply that can provide stable power supply for the elevator, and obtain the power supply after further screening, thereby obtaining all DC input power supplies that can meet the stable operation of the elevator.

[0037] On this basis, the power supplies that have been screened again are combined and configured according to the power supply power to configure the preliminary input power configuration that best meets the elevator operating conditions. However, in actual application, the implementation cost of the preliminary input power configuration may be high, and there is room for optimization.

[0038] Therefore, the comprehensive electricity cost of the preliminary input power supply configuration is further determined based on the above-mentioned individual electricity cost, and then the comprehensive electricity cost is optimized based on the individual electricity cost of each DC input power supply. Specifically, the lowest electricity cost among all DC input power supplies can be determined through the individual electricity cost, but the configuration plan with the lowest electricity cost may not be able to meet the input current, input duration and other requirements for the normal operation of the elevator. Therefore, the minimum input current, minimum input duration and other parameters of the elevator are determined based on the above-mentioned power supply demand, and the comprehensive electricity cost is optimized based on the above-mentioned individual electricity cost to obtain the optimized electricity cost. According to the optimized electricity cost, the corresponding input power configuration plan can be determined, and the preliminary input power configuration is adjusted according to the plan to obtain the final multi-input power supply plan.

[0039] In the embodiment of the present invention, during the generation process of a multi-input power supply scheme, a comprehensive evaluation is performed based on the input capacity and economy of each DC input power supply, thereby achieving a balance between stable operation of the elevator and operational economy, providing users with the best input power supply scheme, improving user experience, and meeting users' actual needs.

[0040] It is easy for technical personnel in this field to know that if the continuous input time of a DC input power supply is short, the elevator may need to switch the power supply frequently during operation to meet its normal operation. However, during the switching process, there is inevitably a shortage of driving force, which will cause obvious jitter and reduce user experience on the one hand; on the other hand, it may cause damage to electrical components.

[0041] To solve the above technical problems, in an embodiment of the present invention, the method further includes: after generating the multi-input power supply scheme, evaluating the riding comfort of the multi-input power supply scheme based on the unit input duration, and generating a comfort evaluation result; optimizing the multi-input power supply scheme based on the preset comfort requirements and the comfort evaluation result, and generating an optimized multi-input power supply scheme.

[0042] In one possible implementation, after generating the above-mentioned multi-input power supply scheme, the elevator comfort of the multi-input power supply scheme is further evaluated based on the unit input duration to generate a comfort evaluation result. For example, in one implementation scenario, if the number of power switching during a single operation is set to exceed 3 times, the comfort of the elevator ride will cause trouble to the passengers. According to the above-mentioned unit input duration combined with the duration of this elevator operation, the corresponding comfort evaluation result is determined, and the multi-input power supply scheme is optimized according to the result to generate a final optimized multi-input power supply scheme. Through this scheme, a power supply configuration scheme with moderate comfort can be provided to users.

[0043] In the embodiment of the present invention, by comprehensively considering various aspects of power supply capacity, economy and comfort during the multi-DC input power supply configuration process of the DC elevator, an optimal input power supply configuration scheme is generated, thereby effectively meeting the customer's needs in terms of making full use of DC power supply resources, low-cost elevator rides, and comfortable elevator rides, thereby improving the user experience.

[0044] The elevator control device with multiple DC power supply inputs provided by the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0045] See also Figure 3 Based on the same inventive concept, an embodiment of the present invention provides an elevator control device with multiple DC power supply inputs, the device comprising: a parameter acquisition unit, used to acquire the power supply parameters of each DC input power supply; an evaluation unit, used to perform power supply capacity evaluation on each DC input power supply based on the power supply parameters and generate an evaluation result; a demand acquisition unit, used to acquire the power supply demand of the current elevator; a solution generation unit, used to generate a multi-input power supply solution based on the power supply demand and the evaluation result; a power supply unit, used to perform corresponding power supply operations based on the multi-input power supply solution.

[0046] In an embodiment of the present invention, the evaluation unit includes: a weight determination module, which is used to determine the parameter weight of each parameter based on the importance of each parameter in the power supply parameters; a historical data acquisition module, which is used to acquire the historical input data of each DC input power supply; a unit data determination module, which is used to determine the unit input data of each DC input power supply within a preset time period based on the historical input data, and the unit input data includes unit input intensity, unit input duration, and input regularity; an evaluation module, which is used to evaluate the power supply capacity of each DC input power supply based on the unit input intensity, the unit input duration, the input regularity and the parameter weight, and generate an evaluation result.

[0047] In an embodiment of the present invention, the scheme generation unit includes: a first cost determination module, used to determine the individual electricity cost of each DC input power supply; a preliminary configuration module, used to determine the preliminary input power supply configuration based on the power supply demand and the evaluation result; a second cost determination module, used to determine the comprehensive electricity cost of the preliminary input power supply configuration based on the individual electricity cost; an optimization module, used to optimize the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; a scheme generation module, used to optimize the preliminary input power supply configuration based on the optimized electricity cost to generate a multi-input power supply scheme.

[0048] In an embodiment of the present invention, the power supply requirement includes power supply current intensity, power supply duration and power supply power, and the preliminary configuration module is specifically used to: screen each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminary screened power supply; screen the preliminary screened power supply based on the power supply duration to obtain a re-screened power supply; and combine and configure the re-screened power supplies based on the power supply power to generate a preliminary input power supply configuration.

[0049] In an embodiment of the present invention, the device also includes a comfort optimization unit, which is specifically used to: after generating the multi-input power supply scheme, evaluate the elevator comfort of the multi-input power supply scheme based on the unit input duration, and generate a comfort evaluation result; optimize the multi-input power supply scheme based on preset comfort requirements and the comfort evaluation result, and generate an optimized multi-input power supply scheme.

[0050] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0052] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0053] In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. A method for controlling an elevator with multiple DC power supply inputs, characterized in that: The method comprises: Obtain the power supply parameters of each DC input power supply; Performing power supply capability evaluation on each DC input power supply based on the power supply parameters to generate an evaluation result; Get the current power supply demand of the elevator; generating a multi-input power supply solution based on the power supply demand and the evaluation result; A corresponding power supply operation is performed based on the multi-input power supply scheme.

2. The method according to claim 1, characterized in that: The performing power supply capability evaluation on each DC input power supply based on the power supply parameter to generate an evaluation result includes: Determining a parameter weight of each parameter based on the importance of each parameter in the power supply parameters; Get historical input data of each DC input power source; Determine unit input data of each DC input power source within a preset time period based on the historical input data, wherein the unit input data includes unit input intensity, unit input duration, and input regularity; The power supply capability of each DC input power supply is evaluated based on the unit input intensity, the unit input duration, the input regularity and the parameter weight, and an evaluation result is generated.

3. The method according to claim 2, characterized in that The generating a multi-input power supply solution based on the power supply demand and the evaluation result includes: Determine the individual electricity cost for each DC input source; Determining a preliminary input power configuration based on the power supply demand and the evaluation result; Determining a comprehensive electricity cost of the preliminary input power configuration based on the individual electricity cost; Optimizing the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; The preliminary input power configuration is optimized based on the optimized electricity cost to generate a multi-input power supply solution.

4. The method according to claim 3, characterized in that The power supply requirement includes power supply current intensity, power supply duration and power supply power, and determining the preliminary input power configuration based on the power supply requirement and the evaluation result includes: Screening each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminarily screened power supply; Screening the initially screened power source based on the power supply duration to obtain a re-screened power source; The re-screened power supplies are combined and configured based on the power supply power to generate a preliminary input power supply configuration.

5. The method according to claim 3, characterized in that: The method further comprises: After generating the multi-input power supply scheme, evaluating the riding comfort of the multi-input power supply scheme based on the unit input duration, and generating a comfort evaluation result; The multi-input power supply scheme is optimized based on the preset comfort requirement and the comfort evaluation result to generate an optimized multi-input power supply scheme.

6. A method and device for controlling an elevator with multiple DC power supply inputs, characterized in that: The device comprises: A parameter acquisition unit, used to acquire power supply parameters of each DC input power supply; An evaluation unit, configured to perform a power supply capability evaluation on each DC input power supply based on the power supply parameters and generate an evaluation result; A demand acquisition unit, used to obtain the current power supply demand of the elevator; A scheme generating unit, configured to generate a multi-input power supply scheme based on the power supply demand and the evaluation result; A power supply unit is used to perform a corresponding power supply operation based on the multi-input power supply scheme.

7. The device according to claim 6, characterized in that The evaluation unit comprises: A weight determination module, used to determine a parameter weight of each parameter in the power supply parameters based on the importance of each parameter; A historical data acquisition module, used to acquire historical input data of each DC input power supply; A unit data determination module, configured to determine unit input data of each DC input power source within a preset time period based on the historical input data, wherein the unit input data includes unit input intensity, unit input duration, and input regularity; An evaluation module is used to evaluate the power supply capability of each DC input power supply based on the unit input intensity, the unit input duration, the input regularity and the parameter weight, and generate an evaluation result.

8. The device according to claim 7, characterized in that The solution generating unit comprises: A first cost determination module, used to determine the individual power cost of each DC input power source; A preliminary configuration module, used to determine a preliminary input power configuration based on the power supply demand and the evaluation result; A second cost determination module, configured to determine a comprehensive electricity cost of the preliminary input power configuration based on the individual electricity cost; An optimization module, configured to optimize the comprehensive electricity cost based on the individual electricity cost to generate an optimized electricity cost; A scheme generating module is used to optimize the preliminary input power configuration based on the optimized electricity cost to generate a multi-input power supply scheme.

9. The device according to claim 8, characterized in that The power supply requirements include power supply current intensity, power supply duration and power supply power. The preliminary configuration module is specifically used for: Screening each DC input power supply based on the power supply current intensity and the evaluation result to obtain a preliminarily screened power supply; Screening the initially screened power source based on the power supply duration to obtain a re-screened power source; The re-screened power supplies are combined and configured based on the power supply power to generate a preliminary input power supply configuration.

10. The device according to claim 8, characterized in that The device further comprises a comfort optimization unit, wherein the comfort optimization unit is specifically used for: After generating the multi-input power supply scheme, evaluating the riding comfort of the multi-input power supply scheme based on the unit input duration, and generating a comfort evaluation result; The multi-input power supply scheme is optimized based on the preset comfort requirement and the comfort evaluation result to generate an optimized multi-input power supply scheme.

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