Limitation of the loading of a power source
First Claim
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1. Arrangement for limiting power from an alternating electricity power source equipped with a status determination unit that determines a status of the power source, the power source generating a status determination signal based on the determined status, the arrangement comprising:
- one or more power supply appliances fitted between the power source and a load to be supplied, the one or more power supply appliances including one or more of an AC/DC transformer, an inverter, and a frequency converter, anda data transfer channel arranged between the power source and a power supply appliance to transfer the status signal from the power source to the power supply appliance;
whereinthe generated status signal indicates a loading state of the power source and a supply frequency of the power source;
the power supply appliance includes an input for the status signal; and
the power supply appliance is fitted to limit input power of the power supply appliance to prevent overloading of the power source, based on a change in the supply frequency indicated by the generated status signal.
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Abstract
The invention relates to an arrangement and a method for limiting the input power of a power supply appliance (1) fitted between a power source (2) and a load (3). The arrangement according to the invention comprises a power supply appliance (1) fitted between a power source (2) and the load to be supplied (3), which power supply appliance (1) is fitted to limit its input power on the basis of the status of the aforementioned power source (2).
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Citations
15 Claims
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1. Arrangement for limiting power from an alternating electricity power source equipped with a status determination unit that determines a status of the power source, the power source generating a status determination signal based on the determined status, the arrangement comprising:
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one or more power supply appliances fitted between the power source and a load to be supplied, the one or more power supply appliances including one or more of an AC/DC transformer, an inverter, and a frequency converter, and a data transfer channel arranged between the power source and a power supply appliance to transfer the status signal from the power source to the power supply appliance; wherein the generated status signal indicates a loading state of the power source and a supply frequency of the power source; the power supply appliance includes an input for the status signal; and the power supply appliance is fitted to limit input power of the power supply appliance to prevent overloading of the power source, based on a change in the supply frequency indicated by the generated status signal. - View Dependent Claims (2, 3, 4, 5, 6, 12, 13, 14)
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7. Elevator system, operably connected to an alternating electricity power source equipped with a status determination unit that determines a status of the power source, the power source generating a status determination signal based on the determined status, the elevator system comprising:
an arrangement for limiting power, the arrangement including one or more power supply appliances fitted between the power supply circuit of the elevator and the power source, the one or more power supply appliances including one or more of an AC/DC transformer, an inverter, and a frequency converter, and a data transfer channel arranged between the power source and a power supply appliance to transfer the status signal from the power source to the power supply appliance; wherein the generated status signal indicates a loading state of the power source and a supply frequency of the power source; the power supply appliance includes an input for the status signal; and the power supply appliance is fitted to limit input power of the power supply appliance to prevent overloading at the power source based on a change in the supply frequency indicated by the generated status signal.
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8. Method for limiting input power of a power supply appliance based on a status signal generated by an alternating electricity power source, the status signal indicating a loading state of the power source and a supply frequency of the power source, the method comprising:
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providing one or more power supply appliances connected to the power source, the one or more power supply appliances including one or more of an AC/DC transformer, an inverter, and a frequency converter; receiving the generated status signal at an input of a power supply appliance via a data transfer channel arranged between the power source and the power supply appliance; and limiting the input power of the power supply appliance to prevent overloading of the power source, based on a change in the supply frequency indicated by the generated status signal. - View Dependent Claims (9, 10, 11, 15)
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Specification