# US 11,114,887 B2 · Power system for vertical transportation, method and vertical transportation arrangements > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,887 B2 - Document ID: US11114887B2 - Status: Granted - Kind: B2 - Application number: 16/110,544 - Filed: 2018-08-23 - Published: 2019-02-28 - Granted: 2021-09-07 - Earliest claimed: 2017-08-24 - Assignees: Kone Corporation - Applicants: Kone Corporation - Inventors: Sami Saarela - Web page: https://patentgrep.com/patent/US11114887B2 ## CPC - H02J 7/14: for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle - B66B 1/30: effective on driving gear {, e.g. acting on power electronics, on inverter or rectifier controlled motor} - B66B 5/027: {to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door} - B66B 9/00: Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) - B66B 11/043: {actuated by rotating motor; Details, e.g. ventilation (roping on drum, sheave, winch or pulley B66B11/0065; power supply or control B66B1/28, H02P; motor construction H02K)} - B66B 23/02: Driving gear - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract The current disclosure relates to a power system for feeding power into a vertical transportation arrangement. The power system comprises a first interface for connecting to a primary power source; a second interface for connecting to a secondary power source; and power controlling means for controlling feeding of power from the primary power source and/or the secondary power source to a motor for driving a vertical transportation device. The power system is characterized in that the power controlling means is configured to control feeding at least some of the power used by the motor during normal operation from the secondary power source. The current disclosure also relates to a method and vertical transportation arrangements. ## Claims ### Claim 1 A power system for feeding power into a vertical transportation arrangement, the power system comprising: a first interface for connecting to a primary power source; a second interface for connecting to a secondary power source; and a controller configured to, determine a minimum level other than a zero level for energy available from the secondary power source based on an amount of energy needed for a rescue run of the vertical transportation arrangement, and control feeding of power from the primary power source and the secondary power source to a motor for driving the vertical transportation arrangement such that at least some of the power used by the motor during normal operation is fed from the secondary power source while always maintaining the energy available from the secondary power source at or above the minimum level by (i) adjusting the minimum level for the energy available from the secondary power source level based on a load of the vertical transportation arrangement and (ii) planning trips for the vertical transportation arrangement in view of always maintaining the energy level from the secondary power source at or above the minimum level during the normal operation. ### Claim 2 (depends on 1) The power system according to claim 1, further comprising: a monitoring device configured to monitor parameters relating to the primary power source, wherein the controller is configured to control feeding of the power based on the parameters. ### Claim 3 (depends on 1) The power system according to claim 1, further comprising: a monitoring device configured to monitor power usage of the vertical transportation arrangement, wherein the controller is configured to control feeding of the power based on the power usage. ### Claim 4 (depends on 1) The power system according to claim 1, wherein the controller is configured to discontinue feeding power from the secondary power source to the motor if the energy available from the secondary power source is reduced to the minimum level. ### Claim 5 (depends on 1) The power system according to claim 1, wherein the secondary power source includes at least one battery. ### Claim 6 A method of controlling a power system for feeding power into a vertical transportation arrangement, the power system including a first interface for connecting to a primary power source and a second interface for connecting to a secondary power source, the method comprising: determining a minimum level other than a zero level for energy available from the secondary power source based on an amount of energy used for a rescue run of the vertical transportation arrangement, and controlling feeding of power from the primary power source and the secondary power source to a motor driving the vertical transportation arrangement such that at least some of the power used by the motor during normal operation is fed from the secondary power source while always maintaining the energy available from the secondary power source at or above the minimum level by (i) adjusting the minimum level for the energy available from the secondary power source level based on a load of the vertical transportation arrangement and (ii) planning trips for the vertical transportation arrangement in view of always maintaining the energy level from the secondary power source at or above the minimum level during the normal operation. ### Claim 7 (depends on 6) The method according to claim 6, further comprising: monitoring parameters relating to the primary power source, wherein the controlling controls feeding of the power based on the parameters. ### Claim 8 (depends on 6) The method according to claim 6, further comprising: monitoring power usage of the vertical transportation arrangement, wherein the controlling controls feeding of the power based on the power usage. ### Claim 9 (depends on 6) The method according to claim 6, further comprising: discontinuing feeding power from the secondary power source to the motor, if the energy available from the secondary power source is reduced to the minimum level. ### Claim 10 (depends on 6) The method according to claim 6, wherein the secondary power source includes at least one battery. ### Claim 11 (depends on 1) An elevator arrangement comprising: the power system according to claim 1. ### Claim 12 (depends on 11) The elevator arrangement according to claim 11, wherein the elevator arrangement comprises: at least two elevator cars. ### Claim 13 (depends on 11) The elevator arrangement according to claim 11, wherein the elevator arrangement comprises: an elevator controller configured to plan elevator runs based on parameters relating to the primary power source. ### Claim 14 (depends on 11) The elevator arrangement according to claim 11, wherein the power system is configured to feed the power used by the motor during power failure of the primary power source from the secondary power source. ### Claim 15 (depends on 1) An escalator arrangement comprising: the power system according to claim 1. ### Claim 16 (depends on 1) An inclined moving walk arrangement comprising: the power system according to claim 1. ### Claim 17 (depends on 1) A vertical transportation arrangement comprising: two or more of at least one elevator, at least one escalator, at least one inclined moving walk; and the power system according to claim 1. ### Claim 18 (depends on 1) The power system of claim 1, wherein the controller is configured to determine the minimum level for the energy available from the secondary power source by determining an amount of energy used to drive an elevator car of the vertical transportation arrangement to a closest floor in relation thereto. ### Claim 19 (depends on 18) The power system of claim 18, wherein the controller is configured to, monitor, via one or more sensors, the load of the elevator car, determine the amount of energy used to drive the elevator car to the closest floor is based on the load of the elevator car, adjust the minimum level of the energy available from the secondary power source level such that the secondary power source always maintains at least the amount of energy used to drive the elevator car to the closest floor, and discontinue feeding power from the secondary power source to the motor if the energy available from the secondary power source is reduced to the adjusted minimum level. ### Claim 20 (depends on 1) The power system of claim 1, wherein the controller is configured to recharge the secondary power source using regenerative power generated by the motor. ### Claim 21 (depends on 2) The power system according to claim 2, wherein the monitoring device is configured to monitor one or more of a frequency of the power from the primary power source or an available current of the primary power source, wherein the controller is configured to control feeding of the power based on the one or more of the frequency of the power from the primary power source or the available current of the primary power source.