| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 187289000 | For electric power source | 73 |
| 20080283341 | ELEVATOR SYSTEM - The invention relates to an elevator system and a method for reducing total power in an elevator system. According to the invention, the elevator system comprises at least one elevator without counterweight for moving people and/or goods, which elevator without counterweight comprises a power converter unit, an elevator motor, a traction sheave, a set of hoisting ropes and an elevator car, and which elevator system comprises means for storing mechanical energy and discharging an energy storage. | 11-20-2008 |
| 20090211853 | BATTERY POWERED MECHANIZED RAISE CLIMBING SYSTEM - A battery powered raise climber system is provided that uses Lithium ion batteries to drive a single or double electric drive for an existing raise climber. The batteries offer a faster, safer, quieter and cleaner way to move workers and their equipment to and from the work face in a raise and eliminates the need for adding lengths of hose as the raise climber ascends and eliminates the emission of harmful inhalants. The battery powered system also enables high efficiency area lighting to be used at the work face, and as the raise climber descends in the raise, the electric drives can reverse operation to recharge the batteries. | 08-27-2009 |
| 20100116595 | MANAGEMENT OF POWER SOURCE VARIATIONS IN AN ELEVATOR DRIVE SYSTEM | 05-13-2010 |
| 20110036668 | ELECTRONIC SAFETY SYSTEM FOR AN ELEVATOR - Electronic safety system for an elevator with a controller ( | 02-17-2011 |
| 20120000730 | ELEVATOR REGENERATIVE DRIVE INCLUDING AN AIR CORE INDUCTOR - An exemplary elevator machine includes a motor that operates in a first mode to move an elevator car and in a second mode to generate power. A line reactor is associated with the motor for delivering power generated by the motor operating in the second mode. The line reactor comprises an air core inductor. | 01-05-2012 |
| 20120067673 | Transport System - A power supply system of a transport system includes: a direct-current intermediate circuit; a motor bridge connected to the direct-current intermediate circuit, for supplying power between the direct-current intermediate circuit and the motor that moves the transport appliance; and also an energy storage and a direct-current converter based on indirect power transmission connected between the energy storage and the direct-current intermediate circuit, for controlling the power supply between the energy storage and the direct-current intermediate circuit. The direct-current converter based on indirect power transmission includes: a controllable solid-state switch, for disconnecting the power supply occurring from the energy storage. | 03-22-2012 |
| 20120193172 | CONVEYOR SYSTEM COMPRISING AN ELECTROMAGNETIC BRAKE - The invention relates to a conveyor system comprising a transport device ( | 08-02-2012 |
| 20120279806 | OBSTRUCTION MONITORING METHOD AND SYSTEM FOR A VERTICAL RECIPROCATING CONVEYOR - A method and system for controlling the operation of a drive motor for a vertical reciprocating conveyor. The method initially activates a drive motor to move a carriage from a resting position. After initial start-up period, the method sets a threshold current value as the present current value being drawn by the drive motor. The method compares subsequent present current value measurements to the threshold current value and determines whether the present current value exceeds or falls below the threshold current value by more than an operating limit. If the present current value falls within the operating limits, the threshold current value is updated to the present current value on a periodic basis. In this manner, the method continuously updates the threshold current value to compensate for an increase in the weight being lifted by the vertical reciprocating conveyor. | 11-08-2012 |
| 20120285774 | ELECTRICAL POWER SYSTEM - The invention relates to an electrical power system for operating elevators. The electrical power system comprises: an electricity distribution network of a building, which comprises an interface to a public electricity network; a plurality of hoisting machines of an elevator, each of which hoisting machines of an elevator is equipped to move an elevator car in an elevator hoistway; and also a power supply system, which comprises an interface to the aforementioned hoisting machines of the elevator, and which power supply system comprises an interface to the electricity distribution network of the building, for supplying power between the hoisting machines of the elevator and the electricity distribution network of the building. | 11-15-2012 |
| 20130025974 | Braking Device - A braking device for an elevator is disclosed. The device may include a motor, a braking system, a first switch, and a second switch. The motor may be capable of generating a counter-electromotive force. The braking system may move to a disengaged position upon being energized and may move to an engaged position upon being de-energized. The first and second switches may have an open state. In the open state, the switches electrically couple the motor to the braking system so that the counter-electromotive force of the motor may energize the braking system. | 01-31-2013 |
| 20130112507 | ELEVATOR REGENERATIVE DRIVE CONTROL REFERENCED TO DC BUS - An exemplary elevator drive includes a DC bus. At least some power components in a power section are electrically referenced to the DC bus. At least some control components in a control section including a drive controller and associated inputs are electrically referenced to the DC bus. This eliminates any requirement for isolating the components referenced to the DC bus from each other. | 05-09-2013 |
| 20130192932 | ELEVATOR SAFETY SYSTEM AND METHOD - An elevator safety system including a controller, and a hoistway safety node arranged at a pit portion of an elevator hoistway. The hoistway node is operatively connected to one of a pit safety device and a lower hoistway device arranged at the elevator pit. A first bus links the hoistway node and the controller. The first bus passes communication signals directly from the hoistway node to the controller. A car node is arranged in an elevator car. The car node is operatively connected to a car safety device arranged at the elevator car. A second bus links the car node and the controller. The second bus passes communication signals directly from the car node to the controller. | 08-01-2013 |
| 20150053508 | SAFETY ARRANGEMENT OF AN ELEVATOR - A safety arrangement of an elevator, which includes sensors configured to indicate functions that are critical from the viewpoint of the safety of the elevator, and also a safety circuit, with which the data formed by the sensors indicating the safety of the elevator is read. The safety arrangement includes a drive device for driving the hoisting machine of the elevator. The drive device includes a DC bus, and also a motor bridge connected to the DC bus for the electricity supply of the elevator motor. The motor bridge includes high-side and low-side switches for supplying electric power from the DC bus to the elevator motor when driving with the elevator motor, and also from the elevator motor to the DC bus when braking with the elevator motor. The drive device also includes a control circuit of the motor bridge, with which control circuit the operation of the motor bridge is controlled by producing control pulses in the control poles of the high-side and low-side switches of the motor bridge, an input circuit for a safety signal, which safety signal can be disconnected/connected from outside the drive device, and also drive prevention logic, which is connected to the input circuit and is configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches of the motor bridge when the safety signal is disconnected. The signal conductor of the safety signal is wired from the safety signal to the drive device, and the safety circuit comprises means for disconnecting/connecting the safety signal. The safety circuit is arranged to bring the elevator into a state preventing a run by disconnecting the safety signal, and the safety circuit is arranged to remove the state preventing a run by connecting the safety signal. | 02-26-2015 |
| 20160002005 | ELEVATOR SAFETY CIRCUIT - An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay. | 01-07-2016 |
| 20160039633 | LOW PROFILE DRIVE UNIT FOR ELEVATOR SYSTEM - A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link. | 02-11-2016 |
| 20160145075 | ELEVATOR INSTALLATION AND A METHOD FOR CONTROLLING ELEVATORS - The invention relates to an elevator installation and also to a method for controlling elevators. In the method a run plan is formed for driving elevator cars on the basis of service requests, the elevator cars are driven according to the run plan, by supplying electric power via the electricity distribution network of the building to a hoisting machine driving an elevator car, and also by supplying electric power from a hoisting machine braking an elevator car back to the electricity distribution network of the building, alternatives for a run plan are formed for driving elevator cars on the basis of service requests, the electric power which the hoisting machines need for implementing the aforementioned alternatives is determined, and also a run plan is selected for use from the plurality of different alternatives, when implementing which run plan the electric powers of the hoisting machines, when summed together, smooth the power variation occurring in the electricity supply of the building. | 05-26-2016 |
| 20160194179 | ELEVATOR BRAKING IN A BATTERY POWERED ELEVATOR SYSTEM | 07-07-2016 |
| 187290000 | With auxiliary supply of electricity | 28 |
| 20080202859 | Method For Performing an Elevator Rescue Run - Method for performing an elevator rescue run in an emergency situation, the elevator comprising and elevator car, a counter weight, a rope suspending the car and the counterweight, a drive motor, an emergency brake for stopping the car in an emergency situation, and a motor drive unit for supplying drive power to and for controlling the drive motor, having the following rescue run sequence steps:
| 08-28-2008 |
| 20090014252 | ELEVATOR DRIVE ASSEMBLY INCLUDING A CAPACITIVE ENERGY STORAGE DEVICE - An elevator drive assembly ( | 01-15-2009 |
| 20090127029 | ELEVATOR RESCUE OPERATION CONTROL SYSTEM - A power supply for an elevator drive, comprising a voltage input, a comparator for comparing the input voltage with a predetermined threshold, a transformer having a primary winding and a secondary winding connected to the elevator drive; where the transformer has a single tapped primary winding and wherein, when the input voltage exceeds the predetermined threshold input, the comparator output causes power to be supplied to the primary winding via one of an end of the winding or the tapping of the winding, and when the input voltage is below the predetermined threshold, input power is supplied to the primary winding via the other of the end of the primary winding and the tapping of the winding. | 05-21-2009 |
| 20090173582 | Elevator Backup System - A method of controlling an elevator system comprises transferring power to an elevator car from a primary power supply to a backup power supply without interruption of power if the primary power supply fails or is disrupted. Following transfer of power to the elevator car from the primary power supply to the backup power supply either pending operations of the elevator car are completed or the elevator car is moved to a predetermined floor based on pending operations of the elevator car. The backup power supply can be attached to the elevator car. | 07-09-2009 |
| 20090218175 | Elevator Power System - A power system ( | 09-03-2009 |
| 20090301819 | Elevator Motor Drive Tolerant of an Irregular Power Source - A hoist motor ( | 12-10-2009 |
| 20100006378 | ELEVATOR DRIVE SYSTEM INCLUDING RESCUE OPERATION CIRCUIT - A system continuously drives an elevator hoist motor during normal and power failure conditions. A regenerative drive delivers power from a main power supply to the hoist motor during normal operation. A rescue operation circuit includes a backup power supply and is operable in the event of a failure of the main power supply to disconnect the regenerative drive from the main power supply and connect the back up power supply to the regenerative drive to provide substantially uninterrupted power to the hoist motor. | 01-14-2010 |
| 20100044160 | AUTOMATIC RESCUE OPERATION FOR A REGENERATIVE DRIVE SYSTEM | 02-25-2010 |
| 20100065380 | THERMOELECTRIC THERMAL MANAGEMENT SYSTEM FOR THE ENERGY STORAGE SYSTEM IN A REGENERATIVE ELEVATOR - A regenerative elevator system operates in three modes: motoring, idle and regeneration. During the regeneration mode, the elevator motor operates as a generator, and electrical energy is stored in an energy storage system for later use. The energy storage system may be located in a machine room or hoistway where temperature can vary widely. A thermoelectric thermal management system provides thermoelectric cooling or heating to maintain the energy storage system within a desired operating temperature range. | 03-18-2010 |
| 20100187045 | ELECTRIC-POWER SUPPLY SYSTEM FOR ELEVATOR - A power supplying system for an elevator includes: a first electric storage apparatus for storing thereinto electric power derived from a commercial power supply; a charging apparatus for charging the electric power derived from the commercial power supply to the first electric storage apparatus and for controlling a current when the electric power is charged into the first electric storage apparatus; a second electric storage apparatus for storing thereinto electric power used to operate an appliance of an elevator; and a power supplying apparatus for supplying the electric power derived from the first electric storage apparatus to the second electric storage apparatus. | 07-29-2010 |
| 20100258383 | STANDBY MODE OF AN ELEVATOR - The invention relates to an elevator system ( | 10-14-2010 |
| 20110100760 | CONTROL SYSTEM FOR AN ELEVATOR APPARATUS - The control system comprises energy accumulators ( | 05-05-2011 |
| 20110120810 | METHOD FOR OPERATING AN ELEVATOR IN AN EMERGENCY MODE - Method for operating an elevator ( | 05-26-2011 |
| 20110139550 | LINE CURRENT AND ENERGY STORAGE CONTROL FOR AN ELEVATOR DRIVE - Power distribution is managed between a regenerative drive ( | 06-16-2011 |
| 20110147130 | MANAGEMENT OF POWER FROM MULTIPLE SOURCES IN AN ELEVATOR POWER SYSTEM - Power is managed in an elevator system including an elevator hoist motor ( | 06-23-2011 |
| 20110226559 | BATTERY STATE-OF-CHARGE CALIBRATION - Calibration of the state-of-charge (SOC) of a battery-based energy storage system used with a regenerative drive uses an SOC-open circuit voltage (V?oc#191) correlation. The battery is partially charged or discharged to assure operation defined by V?oc#191 following a known V?oc#191-SOC profile, such as a charge or discharge boundary curve. The partial charging/discharging may be synchronized with a traffic profile of an elevator system driven by the regenerative drive. A V?oc#191 measurement is made, and by enhancing the relaxation dynamics of V?oc#191 through regulating battery usage with a reference to traffic profile, a V?oc#191 is estimated more reliably. Using the estimate V?oc#191 and the known V?oc#191-SOC profile, state-of-charge of the battery is determined. | 09-22-2011 |
| 20110290593 | TRANSPORTATION SYSTEM - A transportation system and a method are provided for backing up the operational state of a transportation system. The transportation system includes a control apparatus for controlling the operation of the transportation system. The control apparatus further includes capacitive energy storage and a power supply backup circuit adapted to maintain power supply from the said energy storage to a storage circuit for a given length of time in connection with an operational anomaly in power supply to the control apparatus. | 12-01-2011 |
| 20120261217 | REGENERATIVE DRIVE WITH BACKUP POWER SUPPLY - A system continuously drives a motor during normal and power failure operating conditions. A regenerative drive delivers power to the motor from a main power supply during the normal operating condition and from a backup power supply during the power failure operating condition. A controller operates the regenerative drive to provide available power on the regenerative drive to the backup power supply during the normal operating condition. | 10-18-2012 |
| 20130233652 | ELEVATOR SYSTEM WITH EMERGENCY OPERATION AND BACKUP POWER SUPPLY AT THE SAME LOCATION AS THE ELEVATOR DRIVE - An exemplary elevator system includes an elevator car situated for movement within a hoistway. An elevator drive provides control over a position of the elevator car in the hoistway. A backup power source provides power when the primary power source is unavailable. An emergency controller uses power from the backup power source for controlling the position or movement of the elevator car within the hoistway when the primary power source is unavailable. The elevator drive, the emergency controller and the backup power source are all supported together in a single location within the hoistway. | 09-12-2013 |
| 20130240301 | BACKUP CIRCUIT FOR ELECTRICITY SUPPLY, ELEVATOR SYSTEM, AND METHOD - The invention relates to a backup circuit for electricity supply for ensuring the electricity supply of an electronic overspeed governor in connection with a malfunction of the electricity supply. The backup circuit for electricity supply comprises an energy storage. The backup circuit for electricity supply is configured to disconnect the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor when the malfunction of the electricity supply continues. | 09-19-2013 |
| 20140008155 | ENERGY MANAGEMENT SYSTEM FOR SOLAR-POWERED ELEVATOR INSTALLATION - An energy management system for an elevator installation coupled to a source of alternative energy integrates various operational modes regarding optimization of energy usage. The energy management system selectively executes these modes depending on at least one predetermined parameter of a variety of parameters. The energy management system has a processor and a switch module coupled to the processor to receive a control signal from the processor. Upon processing of at least one of the parameters, the processor selects one of a plurality of operational modes of the elevator installation and generates the control signal as a function of the selected operational mode to cause via the switch module an energy flow from one of the inputs of the switch module to the output of the switch module. | 01-09-2014 |
| 20140116810 | METHOD OF ENABLING REGENERATIVE MOTOR DRIVE TO POWER AN ELEVATOR AND RECEIVE POWER FROM A RENEWABLE POWER SOURCE - A method of running an elevator system in both passenger operation mode and a renewable energy mode. The method includes determining if a request has been received for an elevator cab to move to a specific location; determining if a request has been received to operate the elevator cab in a specific alternative mode if there are no requests for the elevator cab to move to a specific location; signaling a semiconductor switch to connect a renewable energy source to a regenerative motor drive if it is determined there are no requests received to operate the elevator cab in a specific alternative mode; and absorbing regenerative power produced by the renewable power source until the elevator control system receives a request to enter passenger operation mode. Additional processes are provided for multiple car and multiple renewable source embodiments. | 05-01-2014 |
| 20140209415 | Emergency Back-Up Power System For Traction Elevators - An emergency power supply for a traction elevator system utilizes a microprocessor-based control arrangement with pulse-width modulator technology to create an efficient, cost-effective back-up power system for a traction elevator. The microprocessor-based control arrangement is used to sense a power loss, or any type of irregularity in the power supply. Upon sensing some type of power malfunction, the microprocessor-based control arrangement disconnects the elevator system from the main power source and then generates a control signal to initiate the supply of back-up power. Once the elevator electrical system has been recharged and stabilized, the microprocessor-based control arrangement will sense that recovery has occurred and will then provide an appropriate speed and direction command to the traction motor drive system. | 07-31-2014 |
| 20140238782 | REGENERATIVE ELECTRIC POWER STORAGE CONTROL SYSTEM FOR ELEVATORS - A regenerative electric power storage control system for elevators, including: a converter that converts AC electric power to DC electric power; an inverter that converts the DC electric power to the AC electric power, and drives an electric motor that ascends and descends a car; an electric power storage apparatus provided, via an electric power charge and discharge unit, across DC buses located between the converter and the inverter; an electric power charge and discharge control unit to which DC electric power is supplied from an electric power charge and discharge control power supply and that controls the charge and discharge unit. The charge and discharge control unit calculates on a time zone basis electrical energy stored in and electrical energy discharged from the energy storage apparatus during a predetermined period, and based on the calculation result, determines a discharge operation for each time zone posterior to the predetermined period. | 08-28-2014 |
| 20150083526 | Battery Mounting In Elevator Hoistway - A battery powered elevator system in which the battery and power electronics needed to connect the battery to the machine driving the elevator system are mounted in close proximity within the hoistway of the elevator system to minimize power transmission losses. | 03-26-2015 |
| 20150122589 | ELEVATOR SYSTEM WITH POWER STORAGE DEVICE - An elevator system is provided that includes an elevator car ( | 05-07-2015 |
| 20150136531 | ELEVATOR BACKUP POWER SUPPLY - A power architecture for an elevator system is described. The power architecture may comprise a panel receiving power from a power grid through a breaker, a power supply coupled to the breaker to receive power from the grid, a battery coupled to the power supply through a switch, an elevator motor controller coupled to the power supply, the power supply providing power from at least one of the grid and the battery to the controller, and a charger coupled to the breaker and the battery and configured to receive power from the power grid and provide power to the battery to charge the battery. | 05-21-2015 |
| 20160083220 | HYBRID ENERGY SOURCED BATTERY OR SUPER-CAPACITOR FED DRIVE TOPOLOGIES - Embodiments are directed to charging a lead acid battery, providing by the battery a majority of energy required by a load and providing a remainder of the energy required by the load via an energy storage device, and capturing by the battery a portion of energy regenerated by the load and capturing by the energy storage device a remainder of the energy regenerated by the load. | 03-24-2016 |
| 187291000 | Having means for final leveling | 2 |
| 20090250297 | Vehicle lifting and/or stabilising device, relative system and process - The invention provides for a lifting and/or stabilising device ( | 10-08-2009 |
| 20100294598 | DYNAMIC COMPENSATION DURING ELEVATOR CAR RE-LEVELING - An exemplary method of controlling elevator car position includes determining that an elevator car required re-leveling. Elevator car dynamics information associated with a current position of the elevator car is determined. A gain for controlling operation of a motor responsible for moving the elevator car for the re-leveling is adjusted based on the determined elevator car dynamics information. | 11-25-2010 |
| 187292000 | With means for stopping vibration or bump start | 6 |
| 20100140023 | CAR SWAY DETECTOR FOR ELEVATOR - Since there are a variety of models of elevators, it is extremely time consuming to set by each elevator a specified value for judging car sway. Also, when one specified value is made to represent criteria for all elevators in order to save time for the setting, detection results may vary. Specified values as judgment criteria for car sway are prestored as a table or a relational expression that employ elevator specifications as parameters and a means for automatically selecting a specified value by using information on the elevator specifications is provided, which saves time for the setting. Since the set specified value is suitable for that particular elevator, variation in detection results is suppressed to realize a highly reliable car sway detector. | 06-10-2010 |
| 20110132697 | ELEVATOR VIBRATION DAMPING SYSTEM HAVING DAMPING CONTROL - A vibration damping system for an elevator is provided with a damping device ( | 06-09-2011 |
| 20120103731 | VIBRATION DAMPING DEVICE FOR ELEVATOR - A vibration damping device for suppressing transverse vibrations occurring in an elevating body of an elevator is configured so that a coil provided on the actuator moving part side can be held firmly to a bobbin, and a minute slippage occurring in the coil can be prevented reliably. | 05-03-2012 |
| 20130240302 | Method And System For Active Noise Or Vibration Control Of Systems - A system for active control of noise and/or vibration includes an electric machine; at least one sensor for sensing at least one of noise and vibration in the machine and generating at least one of an audio signal representing noise and a vibration signal representing vibration; a controller obtaining at least one of the noise signal and the vibration signal, the controller generating control signals to reduce at least one of noise and vibration in the machine; and power electronics receiving the control signals and generating drive signals for the machine. | 09-19-2013 |
| 20130299283 | System and Method for Controlling Semi-Active Actuators Arranged to Minimize Vibration in Elevator Systems - A method controls a set of semi-active actuators arranged in an elevator system to minimize a vibration of an elevator car. The elevator system is represented with a model of a virtual elevator system having a single virtual semi-active actuator arranged to compensate a virtual disturbance. The virtual disturbance is determined using a motion profile of position of the elevator car during the operation and a disturbance profile of the virtual disturbance. A state of the elevator system is determined using the model of the virtual elevator system, the virtual disturbance and a signal indicative of a horizontal acceleration of the elevator car during the operation. Each actuator of the set of semi-active actuators is controlled based on the state of the elevator system and according to a control policy of the virtual semi-active actuator. | 11-14-2013 |
| 20150321880 | ACTIVELY DAMPING VERTICAL OSCILLATIONS OF AN ELEVATOR CAR - A system is provided for damping vertical oscillations of an elevator car stopped at an elevator landing. The system includes an elevator traction sheave that receives a torque, a sensor that provides a sensor signal indicative of the torque, a controller that provides a control signal based on the sensor signal, and a motor that applies the torque to the sheave. Oscillations in the torque correspond to the vertical oscillations of the car stopped at the landing during a first (e.g., position control) mode of operation. The motor drives the sensor signal towards a baseline value in response to receiving the control signal during a second (e.g., constant torque control) mode of operation in order to reduce the vertical oscillations of the car. | 11-12-2015 |
| 187293000 | Controls power source speed | 19 |
| 20090026021 | ELEVATOR CONTROL DEVICE - An elevator control device for controllably driving multiple traction units includes position sensors and current supplies. Each of the current supplies includes a position controller for generating a speed command for the corresponding traction unit based on input difference between a common position command for the traction units and a feedback signal derived from an output of the pertinent position sensor, a speed controller for generating a current command for the corresponding traction unit based on an input difference between the speed command generated by the position controller and a feedback signal obtained by differentiating the output of the pertinent position sensor, and a current controller for supplying an electric current to the corresponding traction unit based on the current command generated by the speed controller. | 01-29-2009 |
| 20090133966 | CONTROL DEVICE FOR ELEVATOR - A control apparatus for an elevator has a speed command issuing portion, a movement control portion, and an acceleration limiting portion. The speed command issuing portion calculates a speed command for controlling a speed of a car. The movement control portion controls a movement of the car based on the speed command. The acceleration limiting portion compares drive information corresponding to an output of a drive device during the movement of the car with a preset limit value to determine whether or not an acceleration of the car can be increased. The speed command issuing portion calculates, based on information from the acceleration limiting portion, a speed command to stop the acceleration from increasing when the drive information reaches the limit value. | 05-28-2009 |
| 20090255765 | ELEVATOR SPEED GOVERNOR, SPEED GOVERNING METHOD AND PROGRAM - The present invention provides an elevator speed governor that improves elevator service by exploiting the full use of motor capacity. In one embodiment of the present invention, an elevator speed governor for an elevator in which an elevator car ( | 10-15-2009 |
| 20090283367 | Elevator apparatus - In an elevator apparatus, a single car is raised and lowered by a plurality of hoisting machines. An elevator control device for controlling the hoisting machines generates speed commands separately for the hoisting machines. When a current value of one of the hoisting machines reaches a current set value, which is set in advance during acceleration of the car, the elevator control device applies the speed command for that one of the hoisting machines, whose current value has reached the current set value, to the other hoisting machine as well. | 11-19-2009 |
| 20100126809 | ELEVATOR MOTION PROFILE CONTROL FOR LIMITING POWER CONSUMPTION - An elevator system ( | 05-27-2010 |
| 20100187046 | RESTRICTION OF OUTPUT OF ELECTRICAL DRIVE AND PROTECTION OF AN ELEVATOR - The invention discloses a method for restricting the output of an electrical drive, and also a protection of an elevator. The electrical drive comprises a motor as well as a power supply appliance of the motor. In the method for restricting the output of an electrical drive the stator voltage vector is restricted to its limit value restricting only the component of the stator voltage in the direction of the q axis. In the protection of an elevator, the elevator comprises a machinery brake, a safety brake of the elevator car, and also an electrical drive. The protection of an elevator comprises a determination of at least one limit value, a restriction of the output of the electrical drive on the basis of at least one determined limit value, and also a restriction of the movement of the elevator car on the basis of at least one determined limit value. | 07-29-2010 |
| 20110108368 | ELEVATOR CONTROL APPARATUS AND ELEVATOR APPARATUS - To alleviate the ear block discomfort of passengers without causing any undue reduction in the operational efficiency of an elevator. A travel distance calculating section | 05-12-2011 |
| 20120217098 | BRAKING APPARATUS, ELECTRIC DRIVE, AND ELEVATOR SYSTEM - The invention relates to a braking apparatus, an electric drive and an elevator system. The braking apparatus comprises an apparatus for dynamic braking, for braking an electric machine with dynamic braking, an input for the control signal of the braking apparatus, and also a controller, for controlling the apparatus for dynamic braking as a response to the aforementioned control signal of the braking apparatus. | 08-30-2012 |
| 20120222917 | CONTROLLING A DRIVE MOTOR OF AN ELEVATOR INSTALLATION - A movement of an elevator cage is detected by an elevator control on the basis of signals of a rotary encoder, coupled with a rotational movement of the drive motor or the drive pulley. Before movement of the cage begins, a movement plot in the form of a trip/speed profile is calculated for travel of the elevator cage from an instantaneous elevator cage position to a destination stopping point position. An anticipated slip between the drive pulley and a support means is included in the calculation of the trip/speed profile, and during the travel of the elevator cage a rotational movement of the drive motor and thus of the drive pulley is controlled by the elevator control in dependence on the calculated trip/speed profile and on signals of the rotary encoder. | 09-06-2012 |
| 20130126276 | CONTROL DEVICE OF ELEVATOR - A control device of an elevator improving the speed control performance by performing feedforward compensation. The control device includes a model torque calculating section which calculates, based on a speed instruction value for an electric motor, a model torque instruction value of the electric motor, a storage section which stores the relationship between the speed-dependent loss torque of the electric motor which varies due to variations in the rotation speed of the electric motor and the rotation speed of the electric motor, a speed-dependent loss torque calculating section which calculates, based on a detected value of the rotation speed of the electric motor, a speed-dependent loss torque value correlated to the detected value, and a driving torque calculating section which calculates a torque instruction value by adding the speed-dependent loss torque value correlated to the detected value to the model instruction value. | 05-23-2013 |
| 20150329317 | ELEVATOR SPEED CONTROL - Embodiments are directed to calculating a current associated with a motor of an elevator based on an output of a speed regulator, and controlling the elevator based on the current. Embodiments are directed to examining a feeder current obtained via a converter current sensor of a regenerative drive during a peak power condition, and regulating a speed of an elevator based on the feeder current. | 11-19-2015 |
| 187294000 | Actuated near terminus of shaft | 1 |
| 20120267200 | METHOD FOR MONITORING THE MOVEMENT OF AN ELEVATOR CAR, AND AN ELEVATOR SYSTEM - The invention relates to an elevator system and also to a method for monitoring the movement an elevator car. In the method a first emergency braking procedure is activated for braking the elevator car at a first deceleration if the speed of the elevator car exceeds the first limit value for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car at a second deceleration that is greater than the first, if the speed of the elevator car exceeds the second limit value for permitted speed that is greater than the first limit value for permitted speed. | 10-25-2012 |
| 187295000 | Having control signal pattern generator | 1 |
| 20140060977 | HYDRAULIC ELEVATOR DYNAMIC LEVELING CONTROL - An apparatus for controlling a position of an elevator in a hoistway includes a fixed belt and a dynamic leveling control module adapted for attachment to the elevator and coupled to the fixed belt. The control module includes a position encoder coupled to the fixed belt, a processor electrically connected to the position encoder, and a communications interface electrically connected to the processor and adapted for communication with an elevator controller for the elevator. The control module determines a velocity, a position, and an acceleration of the elevator in response to a count signal output from the position encoder, and calculates a dynamic slowdown distance relative to an elevator landing for each elevator stop. The control module communicates the dynamic slowdown distance to the elevator controller to initiate slowdown of the elevator. The control module determines a new value of said dynamic slowdown distance for each elevator stop. | 03-06-2014 |
| 187296000 | Limited to power source (i.e., motor) utilizing A.C. power | 5 |
| 20080277209 | Elevator Drive Control Strategy - An elevator drive assembly ( | 11-13-2008 |
| 20100038186 | POWERED CONTROLLED ACCELERATION SUSPENSION WORK PLATFORM HOIST SYSTEM - A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to the work platform and in electrical communication with the motor control system. The motor control system is attached to the work platform and is in electrical communication with a constant frequency input power source and the hoist motors. The motor control system controls the acceleration of the work platform as it is raised and lowered by controlling the hoist motors. The controlled acceleration hoist system also includes a platform control system attached to the work platform that is in electrical communication with the motor control system and the hoist motors. Acceleration control is achieved by converting the constant frequency input power to a variable frequency power supply. This may be accomplished through the use of a variable frequency drive(s). | 02-18-2010 |
| 20100078267 | ELEVATOR - A car is suspended by suspension means and raised and lowered by means of a hoisting machine. Electric power supplied to a motor of the hoisting machine is controlled by an electric power converter. The electric power converter is controlled by means of a control apparatus. The control apparatus estimates a maximum value of a regenerative voltage at time of a regenerative operation of the hoisting machine when the car is running. When the estimated maximum value of the regenerative voltage reaches a predetermined voltage limit value, the control apparatus controls the electric power converter so as to stop an increase in estimated maximum value of the regenerative voltage. | 04-01-2010 |
| 20110056771 | ELEVATOR CONTROL DEVICE - An elevator control device includes a vector controller that calculates a voltage command required for driving an elevator cage, a carrier frequency switch circuit that outputs a carrier frequency signal, and a power converter that performs PWM control based on the voltage command and the carrier frequency signal, generates an AC power and supplies the AC power to an AC motor. The carrier frequency switch circuit changes the carrier frequency signal when a torque command for driving the AC motor reaches a torque limit value. Thus, it is possible to continuously operate an elevator without causing damage to a switching element of the power converter. | 03-10-2011 |
| 20110278100 | SUSPENSION WORK PLATFORM HOIST SYSTEM - A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a motor control system. The motor control system is attached to the work platform and is in electrical communication with a constant frequency input power source and the hoist motor. The motor control system controls the acceleration of the work platform as it is raised and lowered by controlling the hoist motor. The system may further include a tilt control system to allow the work platform to reach and maintain a tilt angle setpoint as the work platform is raised and lowered, and/or a system to reduce the reactive power associated with its operation. | 11-17-2011 |
| 187297000 | Limited to power source (i.e., motor) utilizing D.C. power | 1 |
| 20180022576 | DRIVE AND CONTROL FOR SIX-PHASE ELECTRICAL MACHINES WITH NEGLIGIBLE COMMON-MODE VOLTAGE | 01-25-2018 |
| 187298000 | Actuated by human operator engaging specific input part | 1 |
| 20120138392 | SUSPENSION WORK PLATFORM HOIST SYSTEM WITH COMMUNICATION, ROPE MONITORING, AND OPERATOR AUTHORIZATION SYSTEMS - A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system that may have a data transmitter to transmit data to a remote location, a data receiver to receive data from the remote location, and/or a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may also include a GPS tracking device that transmit a hoist location and may prevent operation of the motor if the hoist location is not in an authorized area of operation. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system. | 06-07-2012 |
