WO2010042118A1 - Bâtiment à multiples sources de génération d’énergie activées par un système d’ascenseur - Google Patents

Bâtiment à multiples sources de génération d’énergie activées par un système d’ascenseur Download PDF

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Publication number
WO2010042118A1
WO2010042118A1 PCT/US2008/079319 US2008079319W WO2010042118A1 WO 2010042118 A1 WO2010042118 A1 WO 2010042118A1 US 2008079319 W US2008079319 W US 2008079319W WO 2010042118 A1 WO2010042118 A1 WO 2010042118A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
bus
converter
building
generator
Prior art date
Application number
PCT/US2008/079319
Other languages
English (en)
Inventor
William A. Veronesi
Vladimir Blasko
Stella M. Oggianu
Joseph J. Sangiovanni
Raymond J. Moncini
Original Assignee
Otis Elevator Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otis Elevator Company filed Critical Otis Elevator Company
Priority to PCT/US2008/079319 priority Critical patent/WO2010042118A1/fr
Publication of WO2010042118A1 publication Critical patent/WO2010042118A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/302—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor for energy saving

Definitions

  • the present invention relates to distribution of electrical power in buildings, using power from a power distribution grid, as well as power from alternative energy generators.
  • Electrical power utilities generate electrical energy that is distributed to customers over a wide geographic area through an electrical power distribution grid.
  • the electrical energy generated by the power utilities may be generated using fossil fuel powered generators, hydroelectric generators, nuclear power generators, as well as other alternative sources such as solar power, wind power, and the like.
  • the power distributed over the distribution grid is often in the form of three-phase AC power, although DC power distribution is also used in some power lines.
  • Some customers supplement the electrical power received from the utility power distribution grid with electrical power generated by local electrical generator devices and systems.
  • the power generated by these devices and systems may be used as a backup to the power from the grid during times of power outages or brownout conditions, may be used to power specific electrical loads at the customer's facility, or may be used to generate electrical energy that is delivered onto the grid in order to reduce the net amount of electrical power consumed by that customer.
  • different converting and interfacing devices are needed to connect the energy generator to the particular load that it will serve, to the power distribution system of the customer's building, or to the grid.
  • elevators can appear as sources or sinks of electrical energy.
  • the power demands for operating elevators range from positive, in which externally generated power (e.g., from a power utility) is used, to negative, in which the difference in weight between the loaded elevator and the counterweight drives the motor so that it produces electricity as a generator.
  • the situation where the motor produces electricity as a generator is commonly called regeneration.
  • a regenerative elevator drive is an efficient means to deliver power to the elevator system from the grid or to deliver power to the grid from the elevator system as needed.
  • a typical regenerative elevator drive includes a converter (or rectifier) connected to a building power supply that is in turn connected to the grid, a DC bus, and a converter (or rectifier) to supply variable frequency and voltage to the elevator motor.
  • a controller coordinates operation of the converters.
  • Energy storage systems have also been used in conjunction with regenerative elevator drives to store regenerated electricity, and to power the elevator motor during power interruptions. It is also been suggested that alternative energy generators such as solar panels, fuel cells, or small wind turbines could be used to provide energy to appliances, such as lighting in elevators.
  • a regenerative elevator system is used, in conjunction with a building power distribution system and one or more electrical power generators, to deliver generated power to the building power distribution system for distribution to electrical loads of the building or for transmission onto a power distribution grid.
  • the regenerative elevator system includes a DC bus, an elevator motor, and converters between the bus and the building power distribution system, between the bus and the motor, and between each electrical power generator and the bus.
  • a controller coordinates operation of the converters to operate the elevator motor, as well as to deliver electrical power regenerated by the elevator system or generated by the electrical power generator to the building power distribution system.
  • an energy storage system is also interfaced with the DC bus through a power converter.
  • the energy storage system may store electrical energy regenerated by the elevator system or generated by the electrical power generators.
  • the stored energy may later be used to power the regenerative elevator system during periods when electrical power from the power distribution grid is not available, or is inadequate for proper operation of the elevator system.
  • the stored energy could also be used to power other critical building loads.
  • FIG. 1 is a block diagram of an integrated regenerative elevator and power generation system including a solar photovoltaic power generator.
  • FIG. 2 is a block diagram of an integrated regenerative elevator and power generation system including a photovoltaic solar power generator and an energy storage system.
  • FIG. 3 is an integrated regenerative elevator and power generation system including a wind turbine generator and an electrical energy storage system.
  • FIG. 4 is a block diagram of an integrated regenerative elevator and power generation system including an internal combustion engine and an electrical energy storage system.
  • FIG. 5 is a block diagram of the system of FIG. 3 configured to support a microgrid within a building to provide power to critical loads in the case of a building power failure.
  • FIG. 1 is a block diagram showing integrated regenerative elevator and power generation system 10 in conjunction with building power distribution system 12, non-elevator loads 14, and utility power grid 16.
  • System 10 is a regenerative drive elevator including power converter 20, DC bus 22, smoothing capacitor 24, power converter 26, elevator hoist motor 28, elevator car 30, counterweight 32, roping 34, and controller 36.
  • power conversion module 40 Also connected to DC bus 22 is power conversion module 40, which includes solar cell photovoltaic array 42 and converter 44.
  • Building power distribution system 12 is connected to utility power grid 16 to receive AC power that is delivered from a power utility over the power grid to numerous customers.
  • power on utility power grid 16 is typically provided by a power utility, other synchronous sources such as fuel cells, micro turbines, and diesel generators can be connected to or replace utility power grid 16 to supply AC power to building power distribution system 12.
  • Building power distribution system 12 distributes the AC power to elevator system 10, as well as to non-elevator loads 14 within the building.
  • AC power from utility power grid 16 is three-phase AC power, although in some cases single phase power may be delivered to building power distribution system 12.
  • Power converter 20 provides an interface between building power distribution system 12 and DC bus 22. Power converter 20 receives AC power and converts (rectifies) the AC power to DC power on DC bus 22. Power converter 20 also has the ability to convert DC power from DC bus 22 to AC power that is delivered back to building power distribution system 12. The AC power from power converter 20 may be distributed by building power distribution system 12 to non-elevator loads 14 within the building, or may be supplied to utility power grid 16 to reduce the overall power consumption by the building.
  • Power converter 26 operates as an inverter to convert DC power from DC bus 22 to three-phase AC power used to drive elevator motor 28. Power converter 26 varies the phase, frequency and voltage applied to elevator motor 28 to cause the elevator car to run up or run down as required. Elevator motor 28 controls the speed and direction of movement of elevator car 30 and counterweight 32 by applying a rotational drive to roping 34. The power required to drive hoist motor 28 varies with the acceleration and direction of movement of elevator car 30, as well as the load in elevator car 30.
  • elevator car 30 For example, if elevator car 30 is being accelerated, run up with a load greater than the weight of counterweight 42 (i.e., heavy load), or run down with a load less than the weight of counterweight 42 (i.e., light load), power from DC bus 22 is required to drive elevator motor 28. In this case, the power demand of elevator motor 28 is positive.
  • elevator car 30 and counterweight 32 drive elevator motor 28.
  • elevator motor 28 In this case of negative power demand, elevator motor 28 generates three-phase AC power that is converted by power converter 26 to DC power on DC power bus 22.
  • the converted regenerated DC power delivered to DC bus 22 may be returned to building power distribution system 12 by converting the DC power to AC power in power converter 22.
  • the regenerated DC power may be dissipated in a dynamic brake resistor that can be connected across power bus 22, or may be supplied to an electrical energy storage system, as will be discussed in conjunction with FIGS. 2-5.
  • Controller 36 coordinates the operation of converters 20 and 26 to cause elevator car 30 to move from floor-to-floor as required in order to satisfy requests for service from passengers.
  • FIG. 1 shows a single elevator motor and single elevator car
  • system 10 is intended to illustrate regenerative elevators having one or more elevator motors and elevator cars.
  • multiple power converters 26 can be connected in parallel to DC bus 22 so that operation of each elevator motor 28 may be individually controlled by controller 36.
  • power conversion module 40 is also connected to DC bus 22.
  • Power conversion module 40 includes solar photovoltaic generator 42 which receives solar radiation and converts the radiation to DC electrical power. The solar-generated DC power is then conditioned by DC/DC converter 44 and is supplied to DC bus 22.
  • Converter 44 provides energy flow in only one direction, from photovoltaic generator 42 to DC bus 22.
  • Converter 44 is also controlled by controller 36, so that the solar-generated power from photovoltaic generator 42 flows to DC bus 22.
  • controller 36 uses AC power from building power distribution system 12 in operating elevator motor 28. During periods of regeneration of power by elevator motor 28, controller 36 sends AC power back to building power distribution system 12, where it can be used to power non-elevator loads 14, or can be delivered back to utility power grid 16. In either case, total grid power demand of the building is reduced by the regenerated electrical energy.
  • Photovoltaic generator 42 provides an additional source of power that is available to be supplied to building power distribution system 12.
  • controller 36 may control converter 44 and converter 20 to deliver power generated by photovoltaic generator 42 during time periods when elevator motor 28 is not in operation.
  • FIG. 2 is a block diagram showing a system similar to FIG. 1, except that electrical energy storage (EES) system 50 and power converter 52 have been added to the system.
  • EES system 50 may include one or more devices capable of storing electrical energy that are connected in series or parallel.
  • EES system 50 includes at least one supercapacitor, which may include symmetric or asymmetric supercapacitors.
  • EES system 50 includes at least one secondary or rechargeable battery, which may be any of nickel-cadmium (NiCd), lead acid, nickel-metal hydride (NiMH), lithium ion (Li-ion), lithium ion polymer (Li-Poly), iron electrode, nickel- zinc, zinc/alkaline/manganese dioxide, zinc-bromine flow, vanadium flow, and sodium- sulfur batteries.
  • other types of electrical or mechanical devices such as flywheels, can be used to store energy.
  • EES system 50 may include one type of storage device or may include combinations of storage devices.
  • Power converter 52 is a DC/DC converter that interfaces DC EES system 50 with DC bus 22.
  • power converter 52 may be an AC/DC converter.
  • Power converter 52 is bidirectional; it operates when EES system 50 is being charged from DC bus 22, as well as when EES system 50 is delivering power to DC bus 22.
  • Elevator system 10 has the capability of operating based upon AC power delivered from building power distribution system 12, or may run in an off-grid (or grid-independent) mode using power stored in EES system 50, or directly use the energy being harvested in energy system 40.
  • Controller 36 controls power converter 52 to determine the direction in which power will flow between bus 22 and EES system 50.
  • controller 36 receives inputs from EES system 50 from which controller 36 can determine a state-of-charge of EES system 50.
  • Operation of power converter 52 may be controlled by controller 36 in order to maintain EES system 50 at a target state-of-charge, or within a desired operating range of EES system 50.
  • power conversion module 40 has included photovoltaic generator 42 and DC/DC converter 44.
  • Other power conversion modules can be used in conjunction with elevator system 10. Examples of electrical power generators that may be used in power conversion modules include wind power generators, fuel cells, thermoelectric generators, organic-Rankine-cycle (ORC) driven generators, and internal combustion engines.
  • the particular converter used to interface the generator with DC bus 22 will depend upon the form of the electrical power generated by the particular power generator.
  • FIG. 3 shows a system similar to the one shown in FIG. 2, except that power conversion module 60 has replaced power conversion module 40.
  • power conversion module 60 includes wind turbine generator 62 and power converter 64.
  • wind turbine generator 62 is a three-phase wind power generator that provides three-phase AC power to power converter 64.
  • power converter 64 is an AC/DC converter that rectifies the three-phase AC power to produce DC power at a voltage compatible with DC bus 22. Controller 36 controls operation of converter 64.
  • more than one power conversion module may be used. For example, both power conversion module 40 of FIGS. 1 and 2 and power conversion module 60 of FIG. 3 may be connected to DC bus 22.
  • Controller 36 controls the flow of power between all sources and loads connected to DC bus 22 according to the demand for elevator service and the availability of power. Controller 36 may also control the non-grid sources of power, such as the power generators, more directly as needed.
  • FIG. 4 shows an embodiment similar to those shown in FIGS. 2 and 3 accept that power conversion module 70 is connected to DC bus 22 rather than power conversion module 40 of FIG. 2 or power conversion module 60 of FIG. 3.
  • power conversion module 70 includes internal combustion engine/generator set 72 and power converter 74.
  • Controller 36 provides control signals to converter 74, and also provides throttle control and engine shut off control signals. Controller 36 has the capability of starting and stopping engine/generator set 72.
  • controller 36 In the case of a grid power failure, controller 36 detects the failure and enables the engine controls as necessary, and then controls converters 52 and 74 so that EES system 50 delivers power onto DC bus 22, which is then converted by power converter 74 to drive the generator of engine/generator set 72 as a motor starter, in order to start the internal combustion engine.
  • controller 36 can vary the engine throttle of internal combustion engine/generator 72 to maintain target power levels delivered to loads external to integrated elevator system 10. Controller 36 can control power to and from EES system 50 in order to buffer fluctuations on DC bus 22.
  • FIG. 5 shows another embodiment, similar to the embodiment shown in FIG. 3, with the addition of detection and disconnect circuitry 80 between building power distribution system 12 and power converter 20 of integrated regeneration elevator and power distribution system 10.
  • Detection and disconnect circuitry 80 allows controller 36 to detect loss of grid power, and to disconnect integrated elevator system 10 from building power distribution system 12 in the case of power failure or unreliable power conditions (such as a brownout condition).
  • critical non-elevator loads 14a are connected in a small power distribution network or microgrid within the building, so that they can be supported by integrated system 10 in the case of building power failure through a combination of wind-generated electric power from wind turbine generator 62 and stored electrical power from EES system 50.
  • Noncritical loads 14b are connected to building power distribution system 12, but do not receive power from integrated system 10 during grid power failure.
  • a variety of different distributed power sources can be connected to a regenerative elevator system by coupling the energy source to the DC bus of the elevator system.
  • the regenerative elevator drive electronics including converters and a controller, supply properly conditioned power to the building power distribution system from both the elevator and the distributed energy sources. In this way, a duplication of electronics needed for power conditioning and interfacing distributed energy sources to the building power distribution system is avoided.
  • the integrated regenerative elevator and power generation system is readily configurable, and can accommodate one distributed (non-grid) source or multiple sources.
  • Conversion of the generated power to DC power compatible with the DC bus allows the elevator electronics to accommodate a wide variety of different power sources.
  • the incorporation of alternative distributed or local power sources in an integrated elevator system allows the elevator to function off grid for an extended period of time that is limited only by the capabilities of the non-grid power sources.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)
  • Inverter Devices (AREA)

Abstract

L’organe d’entraînement régénérateur d’un système d’ascenseur sert d’interface de conditionnement d’énergie pour accoupler un large éventail de sources de génération d’énergie à un système de distribution d’énergie pour bâtiment. Un système de stockage d’énergie peut être également accouplé à l’organe d’entraînement régénérateur.
PCT/US2008/079319 2008-10-09 2008-10-09 Bâtiment à multiples sources de génération d’énergie activées par un système d’ascenseur WO2010042118A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2008/079319 WO2010042118A1 (fr) 2008-10-09 2008-10-09 Bâtiment à multiples sources de génération d’énergie activées par un système d’ascenseur

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Application Number Priority Date Filing Date Title
PCT/US2008/079319 WO2010042118A1 (fr) 2008-10-09 2008-10-09 Bâtiment à multiples sources de génération d’énergie activées par un système d’ascenseur

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WO2010042118A1 true WO2010042118A1 (fr) 2010-04-15

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139823A (zh) * 2011-03-28 2011-08-03 江苏通用电梯有限公司 具有双向功率流的太阳能光伏电梯控制系统
CN102205920A (zh) * 2011-03-28 2011-10-05 江苏通用电梯有限公司 基于无线传感器网络的电梯直流微网能量管理系统
CN103072854A (zh) * 2013-01-15 2013-05-01 福建省特种设备检验研究院 基于太阳能技术的电梯节能装置及其运行控制方法
WO2014014454A1 (fr) * 2012-07-18 2014-01-23 Otis Elevator Company Gestion d'électricité dans un ascenseur
CN103582604A (zh) * 2011-03-18 2014-02-12 因温特奥股份公司 用于太阳能动力电梯设备的能量管理系统
JP2015101448A (ja) * 2013-11-26 2015-06-04 三菱電機株式会社 エレベータ制御システム、及びエレベータ制御方法
WO2016045814A1 (fr) * 2014-09-24 2016-03-31 Inventio Ag Installation de transport de personnes comprenant au moins un onduleur
EP2944013A4 (fr) * 2013-01-09 2016-11-02 Kone Corp Système d'énergie électrique
CN107579697A (zh) * 2017-10-27 2018-01-12 浙江羿阳太阳能科技有限公司 一种混合发电的太阳能电板及其工作方式
US10389134B2 (en) 2017-06-21 2019-08-20 Katerra, Inc. Electrical power distribution system and method
EP3640177A1 (fr) * 2018-10-19 2020-04-22 Otis Elevator Company Alimentation électrique pour charges ca lors d'une panne d'alimentation dans un système d'ascenseur
US20200122960A1 (en) * 2018-10-19 2020-04-23 Otis Elevator Company Power management in an elevator system
US10790662B2 (en) 2018-04-03 2020-09-29 Katerra, Inc. DC bus-based electrical power router utilizing multiple configurable bidirectional AC/DC converters
US10897138B2 (en) 2018-04-12 2021-01-19 Katerra, Inc. Method and apparatus for dynamic electrical load sensing and line to load switching
EP4368553A1 (fr) * 2022-11-11 2024-05-15 OTIS Elevator Company Système de commande de puissance

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JP2001019310A (ja) * 1999-07-13 2001-01-23 Kitagawa Ind Co Ltd エレベータ
WO2007042603A1 (fr) * 2005-10-07 2007-04-19 Kone Corporation Système de commande d'ascenseur pour une puissance régénérative
WO2007044000A1 (fr) * 2005-10-07 2007-04-19 Otis Elevator Company Systeme electrique pour ascenseur
WO2008085171A1 (fr) * 2007-01-11 2008-07-17 Otis Elevator Company Système de gestion thermique thermoélectrique pour système de stockage d'énergie dans un élévateur à régénération

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001019310A (ja) * 1999-07-13 2001-01-23 Kitagawa Ind Co Ltd エレベータ
WO2007042603A1 (fr) * 2005-10-07 2007-04-19 Kone Corporation Système de commande d'ascenseur pour une puissance régénérative
WO2007044000A1 (fr) * 2005-10-07 2007-04-19 Otis Elevator Company Systeme electrique pour ascenseur
WO2008085171A1 (fr) * 2007-01-11 2008-07-17 Otis Elevator Company Système de gestion thermique thermoélectrique pour système de stockage d'énergie dans un élévateur à régénération

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026363A (zh) * 2011-03-18 2016-10-12 因温特奥股份公司 用于太阳能动力电梯设备的能量管理系统
CN106026363B (zh) * 2011-03-18 2019-06-21 因温特奥股份公司 用于太阳能动力电梯设备的能量管理系统
CN103582604A (zh) * 2011-03-18 2014-02-12 因温特奥股份公司 用于太阳能动力电梯设备的能量管理系统
CN102205920A (zh) * 2011-03-28 2011-10-05 江苏通用电梯有限公司 基于无线传感器网络的电梯直流微网能量管理系统
CN102139823A (zh) * 2011-03-28 2011-08-03 江苏通用电梯有限公司 具有双向功率流的太阳能光伏电梯控制系统
WO2014014454A1 (fr) * 2012-07-18 2014-01-23 Otis Elevator Company Gestion d'électricité dans un ascenseur
CN104470842A (zh) * 2012-07-18 2015-03-25 奥的斯电梯公司 电梯电力管理
US9914617B2 (en) 2012-07-18 2018-03-13 Otis Elevator Company Elevator power management to augment maximum power line power
EP2944013A4 (fr) * 2013-01-09 2016-11-02 Kone Corp Système d'énergie électrique
CN103072854A (zh) * 2013-01-15 2013-05-01 福建省特种设备检验研究院 基于太阳能技术的电梯节能装置及其运行控制方法
JP2015101448A (ja) * 2013-11-26 2015-06-04 三菱電機株式会社 エレベータ制御システム、及びエレベータ制御方法
WO2016045814A1 (fr) * 2014-09-24 2016-03-31 Inventio Ag Installation de transport de personnes comprenant au moins un onduleur
US10389134B2 (en) 2017-06-21 2019-08-20 Katerra, Inc. Electrical power distribution system and method
CN107579697A (zh) * 2017-10-27 2018-01-12 浙江羿阳太阳能科技有限公司 一种混合发电的太阳能电板及其工作方式
CN107579697B (zh) * 2017-10-27 2020-04-10 浙江羿阳太阳能科技有限公司 一种混合发电的太阳能电板及其工作方式
US10790662B2 (en) 2018-04-03 2020-09-29 Katerra, Inc. DC bus-based electrical power router utilizing multiple configurable bidirectional AC/DC converters
US10897138B2 (en) 2018-04-12 2021-01-19 Katerra, Inc. Method and apparatus for dynamic electrical load sensing and line to load switching
EP3640177A1 (fr) * 2018-10-19 2020-04-22 Otis Elevator Company Alimentation électrique pour charges ca lors d'une panne d'alimentation dans un système d'ascenseur
US20200122960A1 (en) * 2018-10-19 2020-04-23 Otis Elevator Company Power management in an elevator system
US20200122961A1 (en) * 2018-10-19 2020-04-23 Otis Elevator Company Power supply to ac loads during power source failure in elevator system
CN111082415A (zh) * 2018-10-19 2020-04-28 奥的斯电梯公司 电梯系统中的功率源失效期间对ac负载的功率供应
EP4368553A1 (fr) * 2022-11-11 2024-05-15 OTIS Elevator Company Système de commande de puissance

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