| 主权项 |
1. An energy management system for an elevator installation coupled to a source of alternative energy, comprising:
a processor having a first input for coupling to an electrical energy storage device to obtain a parameter indicative of a charge status of the electrical energy storage device, a second input for coupling to the source of alternative energy to obtain a parameter indicative of power available from the source of alternative energy, a third input for coupling to an electrical power grid to obtain a parameter indicative of a status of the power grid, and a forth input for coupling to a controller of the elevator installation to obtain a parameter indicative of an operation of the elevator installation; and a switch module coupled to the processor to receive a control signal from the processor, the switch module having a first port for coupling to the electrical energy storage device, a second port for coupling to the source of alternative energy, a third port for coupling to the electrical power grid and a fourth port for coupling a drive motor of the elevator installation to one of the electrical energy storage device, the source of alternative energy and the electrical power grid, wherein the processor is configured to process at least one of the parameters to select one of a plurality of operational modes of the elevator installation, to generate the control signal as a function of the selected operational mode to cause an energy flow from one of the ports of the switch module to another port of the switch module, to detect via the parameter indicative of an operation of the elevator installation that the elevator installation is in a standby mode, and to control the switch module to supply energy from one of the first port and the second port of the switch module to the elevator controller. |
