Abstract: A motor driving apparatus applicable to various types of motor driving apparatuses and having a power storage section for storing a regenerative current and supplying power to an inverter section at the time of acceleration. The motor driving apparatus further comprises a converter section, a DC link, and an inverter section, thereby driving a motor. Connected to the DC link is the power storage section including a capacitor, a charging circuit, a discharging circuit and a diode. The regenerative current produced at the motor deceleration is stored in the capacitor through the diode. The power stored in the capacitor is outputted to the DC link by turning a switching element of the discharging circuit ON at the motor acceleration. Furthermore, the charging circuit has a boost switching regulator circuit for charging the capacitor to the given upper limit voltage equal to or larger than voltage of the DC link and a current limitation circuit for limiting a charging current to the given upper limit.

Abstract: A method for energy storage and recovery for load hoisting equipment powered by an induction hoist motor controlled by a first inverter and having a dual inverter controlling a capacitor utilizing rest power such as reverse power generated from the motor when lowering a load, and unused power at small load or idle, to charge the capacitor whereby energy is stored in the capacitor and the system is reversed when a load is lifted and power is consumed whereby the capacitor is discharged to deliver power to the hoist motor.

Abstract: An elevator having a power feeding apparatus effective for reducing the installation space for the elevator is disclosed. The dimension of the power transmission part disposed at the hoist way and the dimension of the power receiving part mounted on the counter weight, each measured in the direction along which the counter weight moves are made different from each other.

Abstract: An elevator door restrictor system for preventing an elevator door from being opened unless the elevator car is near a floor landing, utilizing battery backed electronics for sensing the presence of a building landing such that the system will continue to maintain the mechanism in the correct state, either locked or unlocked, even if the elevator car continues to move. Wherein even if the battery backup were to become completely discharged, the mechanism will remain in the last state, either locked or unlocked and prevent the elevator car door from being opened until an authorized person takes the appropriate step to move the car or open the car door.

Abstract: An emergency safeguard system for elevator includes an emergency push-button disposed in the elevator car applied to cooperate with an auxiliary control panel and an auxiliary door opening system, furthermore, on the elevator car and in the elevator shaft are provided with photoinduced system and positioning and direction judging system, such that the stranded users are able to extricate themselves from the elevator car under an automatic and safety program.

Abstract: A method for intelligent control includes an exchange of historical parameters of events for operating a system and operating a hoist where an electric motor, preferably a DC-motor, is used for lifting and lowering a lifting belt. It can take place at different speeds by registering amperage through the motor and to perform a switching between fast and slow speed when a given current level is reached. The change in hoisting/lowering speed is achieved when a control unit changes the voltage supplied by the battery unit to the DC-motor or changes the frequency of power supply to an AC-motor. The method makes it possible to control the system and to optimize the hoisting/lowering speed for the lifting belt depending on the load thereon.

Abstract: When there is a breakdown in either one of first and second power converters supplying electrical power to a multi-winding motor comprising a wind-up mechanism, a rescue operation can be safely and reliably carried out by using the remaining power converter. A wind-up mechanism comprises a two-winding motor having first and second windings, and, during normal operation, power is supplied to the first and second windings from first and second inverters respectively. When the first inverter has broken down due to excessive current, first and second contactors are switched off, and a third contactor comprising a short-circuiting unit is switched on. Consequently, both windings receive power from the second inverter, enabling the rescue operation to be carried out without causing vibrations.

Abstract: Backup power device for an elevator comprises a brake including a brake controller and a manual brake rod, a damping assembly including a roller at one end of a lever, and a wheel having alternate recesses and risers, an electro-magnetic controller having a control rod, a pulley having a rope run through the manual brake rod and the control rod, an electro-magnetic brake actuator, and a backup power supply. A passenger trapped in the car can pull down the rope in case of the failure of the electro-magnetic controller, the electro-magnetic brake actuator, and the backup power supply as the lever turns to cause the roller to contact the recess or the riser. The lever moves intermittently to cause the manual brake rod to activate the brake controller for braking and releasing a motor shaft again in intervals. Eventually, the passenger can escape.

Abstract: An emergency drive is a toothed element such as a gear rim, is arranged on a traction sheave of an elevator drive. During emergency operation, the gear rim is driven by means of a pinion of an auxiliary engine. The engine is installed on the elevator drive only during an emergency operation. After emergency operation, the engine is removed from the drive unit. The gear rim may be composed of several layers of interlocked segments. The layers are mutually shifted in a circumferential direction. Each segment consists of laminated/interlocked sheet metal segments, which are, as mass-produced goods, cheaply producible through cutting and punching procedures.

Abstract: Emergency current supply equipment for lift installations with electric motor drives has the task of bridging over temporary drops or interruptions in main voltage and of supplying, in the event of failure of the mains supply during a lift travel, all components of the lift installation needed for an evacuation travel with energy until such time as the lift car has reached the level of a story. The energy storage unit used for that purpose comprises as the storage medium exclusively capacitors in the form of super capacitors or a combination of super capacitors and electrochemically acting batteries.

Abstract: An elevator car (1) includes, a support frame (8) of a cable-driven elevator system without a machine room, with a compact driving pulley driving machine (7), combine with a brake, integrated in this car (1) and/or its support frame (8). This is to provide an elevator car which can be preassembled outside of an elevator shaft as a unit ready to be installed, with as many functional parts as possible. To this end, the elevator car (1) has the following feathers: the driving machine (7) is equipped with a permanent magnet-excited synchronous motor as the driving source; the operating electronics of the driving machine and the control electronics required for the operation of the entire elevator system from a common, interactive functional unit in the form of an electronic central unit (10); and the electronic central unit (10) is permanently connected to the elevator car and/or its support frame.

Abstract: An elevator control apparatus which, when a power failure of the A.C. power source is detected, effectively and usefully uses stored power in a power accumulator and when the A.C. power source is restored, returns an elevator back to the original service to make proper operation possible. The control system includes a control for, when a power failure is detected with a power failure detector, supplying power from the power accumulator to an inverter, to control circuits, and to an illumination circuit of the elevator with a charge/discharge control circuit to continue the operation of the elevator.

Abstract: An elevator without the provision of mechanical room is disclosed. A drive motor can be provided in one of rear side top, underside, and either side of the car. The invention has the following advantages. The vibration of inner car is reduced within an acceptable level for bringing a degree of comfort to passengers in the inner car while hoisting or lowering. The hoist ropes are prevented from slipping when a load of the car changes suddenly as in a case that many persons steps in or out of the car in a short period of time. An alignment of a bottom of the car with each of a plurality of levels is made possible when the elevator is stopped at each level. A manual escape device is provided for assisting passengers to escape in case of emergency.

Abstract: Elevator installations with electric drive systems are equipped with devices (10) to reduce the power supply connection rating which have energy storage units (11) which are formed entirely or partly from so-called supercapacitors (13). The device (10) according to the invention has the effect on the one hand that power peaks during starting and braking operations are compensated by the exchange of energy between the storage unit (11) and motor supply, and on the other hand that the power consumption occurring during a trip is also spread over a part of the at-rest time. Supercapacitors (13) as energy stores tolerate by comparison with electrochemically acting accumulators a much higher number of charging and discharging cycles at high values of current.

Abstract: A lift system with reduced power includes a car running inside a special lift-shaft, and at least a drive unit which allows the raising and the lowering of the car, with the drive unit having at least two power systems, and with the car including a sensor system to detect the load in the car in order to switch the drive unit of the lift system to one of the power systems.

Abstract: An a.c. elevator of the invention has a commercial power source (1), an inverter (3) operable with the power from the commercial power source (1) for generating a.c. power, and an electric motor to be driven with the a.c. power generated by the inverter (3). A power source device includes a rechargeable battery (E), a power source circuit (10) for charging and discharging the battery (E), and a control circuit (9) for controlling the voltage to be input to the inverter (3) by controlling the operation of the power source circuit (10). The battery (E) is charged with regenerative power from the motor, the power generated by the battery (E) is supplied to the inverter (3).

Abstract: The object of the present invention to obtain an elevator control apparatus which is capable of, when a power failure of the A.C. power source is detected, using effectively and usefully a quantity of charged power in a power accumulator and when recovering the power supply, returning an elevator back to the original service to make the proper operation possible. The control system is provided with control means for, when a power failure is detected with a power failure detector, supplying the power of the power accumulator to an inverter and to control circuits and an illumination circuit of the elevator with a charge/discharge control circuit to continue the operation of the elevator.

Abstract: Fixture for an Elevator System A fixture using an electrophoretic display system is disclosed. Various construction details are developed which enable simplification of the wiring system for the elevator system.

Abstract: An onboard power generation apparatus for a hoist conveyance includes a drive wheel carried by the conveyance. The drive wheel is positioned to engage the surface of a stationary structure adjacent the conveyance, such as a shaft guide, so that movement of the conveyance relative to the structure causes rotation of the drive wheel. A charging generator coupled to the drive wheel is operable to produce an electric current upon rotation of the drive wheel. A battery may be electrically connected to the generator so that the generator provides an electric current to recharge the battery. The drive wheel may be mounted for movement relative to the conveyance with biasing mechanism for resiliently biasing the drive wheel toward the surface of the adjacent structure.

Abstract: Emergency current supply equipment (10) for lift installations with electric motor drives has the task of bridging over temporary drops or interruptions in main voltage and of supplying, in the event of failure of the mains supply during a lift travel, all components of the lift installation needed for an evacuation travel with energy until such time as the lift car has reached the level of a storey. The energy storage unit (11) used for that purpose comprises as the storage medium exclusively capacitors in the form of supercapacitors (13) or a combination of supercapacitors (13) and electrochemically acting batteries (14).

Abstract: Elevator installations with electric drive systems are equipped with devices (10) to reduce the power supply connection rating which have energy storage units (11) which are formed entirely or partly from so-called supercapacitors (13). The device (10) according to the invention has the effect on the one hand that power peaks during starting and braking operations are compensated by the exchange of energy between the storage unit (11) and motor supply, and on the other hand that the power consumption occurring during a trip is also spread over a part of the at-rest time. Supercapacitors (13) as energy stores tolerate by comparison with electrochemically acting accumulators a much higher number of charging and discharging cycles at high values of current.

Abstract: A double brake protection device for elevator is provided. The device comprises at least one of emergency means and electromagnetic means coupled to brake in order to effect a stepwise stopping procedure for preventing elevator from free falling after brake is released.

Abstract: An elevator control apparatus includes a converter, an inverter, a controller for controlling a motor based on AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing DC power; a charge/discharge control circuit that issues a drive signal such that discharge from the power storage unit increases within a range of power that can be discharged when an elevator is driven immediately following completion of uniform charging; and a charge/discharge circuit for charging the power storage unit in accordance with the drive signal. This arrangement permits quick discharging while effectively using discharge electric power until a state of charge is reached wherein regenerative electric power can be used for charging.

Abstract: An elevator control apparatus includes a converter, an inverter, a controller for controlling a motor based on AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing DC power; a charge/discharge control circuit that issues a drive signal such that discharge from the power storage unit increases within a range of power that can be discharged when an elevator is driven immediately following completion of uniform charging; and a charge/discharge circuit for starting uniform charging of the power storage unit in accordance with the drive signal. This arrangement permits quick discharging while effectively using discharge electric power until a state of charge is reached wherein regenerative electric power can be used for charging.

Abstract: An elevator system, elevator retrofit kit, and detachable counterweight for providing a self-generating elevator emergency power source. The system converts kinetic energy of an elevator cab descending due to gravity into electrical energy used to regulate the speed of descent. The elevator system can be structured in numerous ways and includes either a generator or a motor in generator mode, driven by a cable attached to the elevator cab and activated by the descent of the cab. The elevator cab descends due to gravity, either by using a counterweight being sufficiently light relative to the cab to cause the cab to descend, or by using a counterweight system whereby power loss or interruption causes the unlocking of a detachable counterweight from a permanent counterweight.

Abstract: A double brake protection device for elevator is provided. The device comprises at least one of emergency means and electromagnetic means coupled to brake in order to effect a stepwise stopping procedure for preventing elevator from free falling after brake is released.

Abstract: An elevator control apparatus solves a major problem with a conventional elevator control apparatus in that a state of charge of a battery is not always maintained at 100% because of the need for securing an allowance for charging regenerative electric power, causing generation of an inert material in the battery with a resultant decrease in an apparent charging capacity of the battery and a shortened life of the battery.

Abstract: An elevator control apparatus solves a major problem with a conventional elevator control apparatus in that a state of charge of a battery is not always maintained at 100% because of the need for securing an allowance for charging regenerative electric power, causing generation of an inert material in the battery with a resultant decrease in an apparent charging capacity of the battery and a shortened life of the battery.

Abstract: An elevator system, elevator retrofit kit, and detachable counterweight for providing a self-generating elevator emergency power source. The system converts kinetic energy of an elevator cab descending due to gravity into electrical energy used to regulate the speed of descent. The elevator system can be structured in numerous ways and includes either a generator or a motor in generator mode, driven by a cable attached to the elevator cab and activated by the descent of the cab. The elevator cab descends due to gravity, either by using a counterweight being sufficiently light relative to the cab to cause the cab to descend, or by using a counterweight system whereby power loss or interruption causes the unlocking of a detachable counterweight from a permanent counterweight.

Abstract: To reduce a total power amount required to drive an elevator by a commercial power supply during a peak power-consumption time period, for instance, afternoon in summer time, a control apparatus for this elevator is arranged by employing: a converter for rectifying AC electric power to be converted into DC electric power; and inverter for inverting the DC electric power into AC electric power having a variable voltage and a variable frequency; a motor driven by said AC electric power having the variable voltage and the variable frequency so as to operate an elevator; a power storage apparatus for charging thereinto electric power; and a power controller for using both the power storage apparatus and the commercial power supply so as to supply the electric power to the inverter, and for controlling at least any one of the power storage apparatus and the commercial power supply in order to supply electric power which is required for the inverter.

Abstract: An onboard power generation apparatus for a hoist conveyance includes a drive wheel carried by the conveyance. The drive wheel is positioned to engage the surface of a stationary structure adjacent the conveyance, such as a shaft guide, so that movement of the conveyance relative to the structure causes rotation of the drive wheel. A charging generator coupled to the drive wheel is operable to produce an electric current upon rotation of the drive wheel. A battery may be electrically connected to the generator so that the generator provides an electric current to recharge the battery. The drive wheel may be mounted for movement relative to the conveyance with biasing mechanism for resiliently biasing the drive wheel toward the surface of the adjacent structure.

Abstract: The invention relates to a device for operating elevators in a special mode which comprises at least one control element for controlling at least one allocated functional unit of the elevator. At least one indicator is assigned to the functional unit, which indicates at least one condition of the functional unit that can be influenced by one or several control elements and which can be perceived by the operator of the one or several control elements.

Abstract: An apparatus for controlling an elevator which has a high energy-saving effect based on charging while using a low-capacity and low-priced secondary battery. The apparatus has a converter for converting an alternating current from an ac power supply into a dc power by rectifying the alternating current, an inverter for driving an electric motor by converting the dc power from the converter into variable-voltage variable-frequency ac power, the motor being driven for the operation of the elevator, and a power accumulator connected to a dc bus between the converter and the inverter. The power accumulator accumulates dc power from the dc bus during regenerative operation of the elevator, and supplies the accumulated dc power to the dc bus during power-drive operation of the elevator.

Abstract: An emergency lifting or lowering device of an elevator includes a transmission toothed wheel fitted to a top of a passage receiving a carriage of the elevator. The transmission wheel has teeth locking into an adjacent one of several toothed wheels arranged in a low. The toothed wheels are each associated with a reeling member having first end portions of steel ropes of the elevator wound therearound. The emergency lifting or lowering device further has an emergency switch disposed in the carriage member, and electrically connected to an emergency power to activate the transmission wheel in order to lift or lower the carriage member to a nearest floor when a main motor of the elevator stops due to power failure.

Abstract: An elevator control apparatus includes a power storage unit for storing the DC power; a charge/discharge control circuit that controls a state of charge of the power storage unit, outputs a drive signal to charge the power storage unit with the DC power during a halt of the elevator based on operational information regarding the elevator received from the controller, and outputs a stop signal to stop charging when a voltage of the power storage unit reaches a preset voltage; and a charge/discharge circuit for starting charging the power storage unit with the DC power in response to the drive signal, and stopping the charging in response to the stop signal. This arrangement ensures landing of the elevator in case of a power failure, eliminates a peak in power consumption, and permits energy saving by effectively using power produced in a regenerative mode of the elevator.

Abstract: An elevator control apparatus includes a converter, an inverter, a controller for controlling a motor based on AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing DC power; a charge/discharge control circuit that issues a drive signal such that discharge from the power storage unit increases within a range of power that can be discharged when an elevator is driven immediately following completion of uniform charging; and a charge/discharge circuit for discharging the power storage unit in accordance with the drive signal. This arrangement permits quick discharging while effectively using discharge electric power until a state of charge is reached wherein regenerative electric power can be used for charging.

Abstract: An elevator control apparatus includes a converter; an inverter; a controller for controlling a motor based on the AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing the DC power; a thermistor for detecting temperature of the power storage unit; a charge/discharge control circuit for controlling a charging and discharging of the power storage unit based on the detected temperature and issuing a drive signal; and a charge/discharge circuit for charging and discharging the power storage unit based on the drive signal. The elevator control apparatus estimates a charging and discharging capability of the power storage unit and protecting the power storage unit, restraining sudden deterioration of the power storage unit.

Abstract: A controller of an elevator for stably controlling regenerated power by using a cheap secondary battery of a low capacity without damaging energy saving effects obtained by charging.

Abstract: An elevator control apparatus includes: a converter for rectifying AC power into DC power; an inverter for converting the DC power into AC power having a variable voltage and a variable frequency; a controller for controlling a motor based on the AC power having the variable voltage and the variable frequency, operating an elevator; a power storage unit for storing the DC power; a required power computing circuit for computing required power of the elevator based on a speed command of the controller; a charge/discharge control circuit for issuing a drive signal for changing charge current, supplied to the power storage unit, based on regenerative electric power so as to charge the power storage unit with the regenerative electric power if the required power of the elevator is negative, meaning that the regenerative electric power is available; and a charge/discharge circuit for charging the power storage unit with the regenerative electric power in accordance with the drive signal.

Abstract: An elevator having a power feeding apparatus effective for reducing the installation space for the elevator is disclosed.

Abstract: An elevator controller for stably controlling charging and discharging of a power accumulating device by using a cheap secondary battery having a low capacity, without damaging energy saving effects obtained by charging.

Abstract: An elevator control device includes: a convertor which rectifies a.c. power and converts the a.c. power into d.c. power; an inverter which converts the d.c. power into a.c. power having a variable voltage and a variable frequency; an electric motor which is driven by the a. c. power having a variable voltage and a variable frequency to operate an elevator; a power storing unit which is charged with electric power; a required-power arithmetically operating circuit which calculates power required by the elevator, which is an electric power required for the operation of the elevator or an electric power caused by the operation of the elevator; and a charging/discharging control circuit which controls charging and discharging of the power storing unit based on the power required by the elevator.

Abstract: A controller of an elevator for smooth speed control, using a cheap power accumulating device having a low capacity, even during a power failure.

Abstract: A controller of an elevator for reducing the number of execution times of uniform charging of a power accumulating device and having higher energy saving effects. The controller has a converter, an inverter, a power accumulating device arranged between DC buses, a charging-discharging control circuit for controlling charging and discharging operations of the power accumulating device, and a charging-discharging state measuring device for measuring at least one of temperature, charging and discharging currents, and charging and discharging voltages of the power accumulating device. The charging-discharging control circuit sets the execution of uniform charging of the power accumulating device on the basis of an output of the charging-discharging state measuring device, and executes only the required uniform charging. Thus, an elevator with the power accumulating device having larger energy saving effects is constructed.

Abstract: To reduce total power required to drive an elevator by a commercial power supply during a peak power-consumption time period, for instance, an afternoon in summer time, a control apparatus includes a converter for rectifying AC electric power into DC electric power; an inverter for inverting the DC electric power into AC electric power having a variable voltage and a variable frequency; a motor driven by the AC electric power having the variable voltage and the variable frequency to operate an elevator; a power storage apparatus for storing electric power; and a charge/discharge control for controlling charging and discharging operation of the power storage apparatus based upon a charging target value.

Abstract: A double backup power device for an elevator including a motor; a control within a car of the elevator, the control including a startup button, an up button, and a down button; and a backup power assembly including a primary battery, a secondary battery, an electrolytic container in fluid communication with the secondary battery, a check valve on the electrolytic container for controlling a flow of the electrolyte, and a switch in a series connection with the primary and the secondary batteries which are parallel connected to the motor means.

Abstract: An elevator controller providing stable speed control using a cheap power accumulating device having a low capacity even in discharging. The controller has a converter, an inverter, a power accumulating device arranged between DC buses, a charging-discharging control circuit for controlling charging and discharging of the power accumulating device, a power failure detector, a current measuring instrument and a voltage measuring instrument for respectively detecting an output current and an output voltage of the inverter, a car load measuring instrument, an encoder, and a speed control circuit for controlling the inverter. The speed control circuit calculates output power of the inverter, and calculates discharging power of the power accumulating device on the basis of a measured value of charging and discharging states.

Abstract: A controller of an elevator in which space for mounting a power accumulating device can be saved and the controller can be applied to an elevator having no machine room. The controller has a power accumulating device arranged between DC buses connected to a converter and an inverter, and accumulating DC power from the DC buses during a regenerative operation of the elevator and supplying the DC power accumulated to the DC buses during a power operation; and a charging-discharging control for controlling charging and discharging of the power accumulating device with respect to the DC buses. The power accumulating device includes a secondary battery and a DC—DC converter for controlling charging and discharging of the secondary battery, and the secondary battery includes plural cells connected in series. The secondary battery is arranged at any one of four corners within an elevator shaft, near a rail, or near a cable within the elevator shaft.

Abstract: A vehicle of a transportation system is moved by a drive supplied with electrical energy from an energy store. For the purpose of loading the energy store at a stop, a supply unit is provided, by which energy from a stationary energy supply, for example the public power supply or a solar generator, is transferred wirelessly to the energy store. A modulator raises the frequency of the energy to a higher level. The energy is transferred from the primary winding of a coupling transformer across an air gap to a secondary winding. The primary winding is stationary and the secondary winding is located on the vehicle. The energy, whose frequency is set at a high level to improve the energy density, is delivered to a demodulator on the vehicle side which, under the control of a controller, converts the energy into a form suitable for charging the energy store.

Abstract: An elevator capable of supplying electric power to accessory hall devices such as up/down elevator buttons and position indicators without requiring power supply lines between the cage and each hall. A drive battery which supplies electric power to hall devices provided in each hall and a receptor connected to the battery are provided on the hall. A feeder contactable with the respective receptors, a charging device that charges the battery via the feeder and receptor are provided on the top of the cage. When the charging voltage, for example, used in a hall of the floor drops below a predetermined voltage value, the cage stops automatically at the floor and the charger charges the drive battery in the hall of the floor via the receptors and feeder.