Abstract: A method and an elevator for moving an elevator car to a landing floor in case of a predefined event related to a main electrical power supply of an elevator are disclosed. The method includes charging energy from the main electrical power supply into an external electrical energy storage prior to detecting the predefined event related to the main electrical power supply, controlling an operation of an electric motor for moving the elevator car with an electrical drive to decelerate the elevator car and to produce regenerative electrical energy, selectively utilizing said energy charged from the main electrical power supply into the external electrical energy storage and said produced regenerative electrical energy to maintain an elevator brake in deactivated state.

Abstract: A wireless power transfer arrangement for an elevator, an elevator, and a method for transferring power wirelessly in an elevator are presented in this document. The arrangement includes at least one first unit including a first winding, a first alignment unit and a first base. The arrangement further includes at least one second unit comprising a second winding, a second alignment unit, and a second base. One of the at least one first unit and the at least one second unit is adapted for arranging to an elevator shaft and the other to a movable unit of the elevator. The first alignment unit and the second alignment unit are configured to be utilized for indicating when the first winding and the second winding are aligned with respect to each other for transferring power wirelessly therebetween.

Abstract: A motor drive includes a rectifier bridge for connection with mains, a converter bridge configured to connect with an elevator motor and an intermediate DC circuit in-between. A capacitor and/or battery is connected between positive and negative branches of the intermediate DC circuit. At the mains side of the rectifier bridge a controlled main relay with contacts are configured to connect or disconnect the rectifier bridge with the corresponding mains phase. The motor drive comprises a charging circuit which comprises a charging switch connected with a current limiting component. The motor drive comprises a voltage sensor between positive and negative branches of the intermediate DC circuit. The voltage sensor is connected to a circuit comprising a reference value and a comparator. The evaluation circuit is configured to compare the actual sensor signal of the voltage sensor to the reference value and to operate the main relay based on the comparison.

Abstract: A method and an elevator for moving an elevator car to a landing floor in case of a predefined event related to a main electrical power supply of an elevator are disclosed. The method includes charging energy from the main electrical power supply into an external electrical energy storage prior to detecting the predefined event related to the main electrical power supply, controlling an operation of an electric motor for moving the elevator car with an electrical drive to decelerate the elevator car and to produce regenerative electrical energy, selectively utilizing said energy charged from the main electrical power supply into the external electrical energy storage and said produced regenerative electrical energy to maintain an elevator brake in deactivated state.

Abstract: The invention relates to a motor drive comprising a rectifier bridge for connection with mains, a converter bridge configured to be connected with an elevator motor and an intermediate DC circuit in-between, whereby between a positive and a negative branch of the intermediate DC circuit at least one capacitor and/or battery is connected, whereby at the mains side of the rectifier bridge a controlled main relay with contacts is arranged, which are configured to connect or disconnect the rectifier bridge with the corresponding mains phase, characterized in that the motor drive comprises a charging circuit being connected between the mains and the rectifier bridge and/or intermediate DC circuit, which charging circuit comprises at least one charging switch connected in series with at least one current limiting component, and which motor drive comprises a voltage sensor connected between the positive and the negative branch of the intermediate DC circuit, which voltage sensor is connected to a fault evaluation c