Elevator groups are known have very high peak power demand. The peak power capacity of the power line can be reduced by using a power arrangement involving a battery. The battery can be discharged for operating elevators when the power demand exceeds the capacity of the power line. The battery may be further used for reducing power cost by charging the battery during lower cost time.

This invention provides a frequency converter and bypass frequency conversion control system, and its switching control method, belonging to the technical field of motor drive control. The frequency converter of this invention accesses a network voltage signal with a corresponding first frequency and first phase, wherein the frequency converter is configured to be able to operate in tracking and synchronization mode, and in tracking and synchronization mode, the frequency converter tracks the first frequency and first phase of the network voltage signal in order to basically synchronize the second frequency and second phase of its output voltage signal with the first frequency and corresponding first phase of the network voltage signal. The frequency converter of this invention achieves simple, low cost, fast synchronization with good synchronism.

Embodiments herein relate to an elevator system of a facility with multiple floors. The elevator system can comprise elevator cars and an elevator controller. The elevator controller includes a memory and a processor. The memory stores computer program instructions executable by the processor to cause the elevator system to determine a current utilization of the elevator system, automatically activate an adaptive split group operation on a per floor basis when the current utilization of the elevator system is greater than a threshold utilization of the elevator system, and dispatch the elevator cars under the adaptive split group operation in accordance with elevator calls.

A lift system comprises a rail (1) and a carriage assembly (2) comprising a seat (21) or platform (21) for supporting a person to be conveyed along the rail (1), drive means arranged to engage the rail (1) and controllable to drive the carriage assembly (2) along the rail (1), energy storage means arranged to power the drive means, input means operable by a user to provide an input signal indicative of a desired movement of the carriage assembly (2) along the rail (1), and control means arranged to receive the input signal and control the drive means in response to the input signal. The system includes charging means arranged to charge the energy storage means when the carriage assembly (2) is at a first charging position on the rail (1). The control means is arranged to monitor at least one voltage (VI, V2) characteristic of the energy storage means and/or at least one operational characteristic of the stair lift, and generate an alert signal in response to one or more of those characteristics, or a difference between one or more of those characteristics, fulfilling a defined criterion, criteria, condition, or conditions.

In the method for increasing the availability of an elevator standing unused at a landing the ambient temperature of at least one electrical device of the elevator is measured; and when the ambient temperature falls below a threshold value, electric current is conducted to at least one electrical device of the elevator for warming the electrical device in question. The patent application also includes an independent claim for a system for increasing the availability of an elevator standing unused at a landing.

The disclosure is related to systems and methods regarding transit and movement of people. The Articulated Funiculator is a continuous and connected system of trains that moves people in mass. The trains lie horizontal at specific floor levels (designated as stations) in tall buildings or underground levels (designated as stations) in mining operations and underground subway stations. The Articulated Funiculator transitions from horizontal alignments at the stations to vertical, slanted or curved alignments between the stations, albeit the passengers remain horizontal in a standing position. The Articulated Funiculator captures the energy from the braking, dynamic braking of the trains and stores it. The stored energy is then used to accelerate the Articulated Funiculator. This re-use of energy makes the Articulated Funiculator sustainable.

An elevator system having: an elevator car vertically movable in an elevator shaft; a traction medium for raising and lowering the elevator car and being guided around at least one roller to the car and being fixed merely at ends thereof; a traction medium reservoir including at least one first deflecting axle and at least one second deflecting axle around which the traction medium is guided in alternation between the first and second axles so that a section, the length depending on the spacing of the first and second axles, of the traction medium is received in the reservoir; and a fixing unit to which the second deflecting axle is fixed, wherein the fixing unit is fastenable at different positions in the elevator shaft so that the spacing between the first and second axles is settable to determine the length of the traction medium received in the reservoir.

A method of assigning destination call in an elevator group forms chromosomes including genes where each gene is a correlation of a call and an elevator trip, the possible round trips are calculated, each round trip is evaluated for optimization procedure. The calls are assigned to the elevators by the destination call control based on the best chromosome determined.

An elevator car power supply system comprises an elevator car, a counterweight including one or a plurality of storage batteries charged by a non-contact power transmission system and a compensation rope with one end connected to the elevator car and the other end connected to the counterweight, the compensation rope including a power line for transmitting power from the storage batteries of the counterweight to the elevator car. The elevator car power supply system may further comprise a wireless communication system for communicating elevator signals between an elevator controller and a car controller.

An elevator system includes an elevator car; a guide rail; and a linear synchronous reluctance motor including: a primary circuit having a plurality of primary poles and windings about the primary poles; a secondary circuit having a plurality of secondary poles; the primary circuit coupled to one of the elevator car and the guide rail, the secondary circuit coupled to the other of the elevator car and the guide rail.