Traction elevator back-up power system with inverter timing
First Claim
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1. A back-up power system for a traction elevator comprising:
- a power loss sensing device, wherein the power loss sensing device senses a power irregularity of normal control power;
an inverter timing system operatively connected to the power loss sensing device, wherein the inverter timing system receives a power irregularity signal from the power loss sensing device; and
a back-up power generating means communicating with the inverter timing system, wherein the back-up power generating means generates an output to provide back-up power,wherein the inverter timing system includes a job cycle lockout timer, which limits an amount of time that the back-up power generating means supplies output power and ensures operation of a full elevator cycle prior to returning to normal control power; and
a main power lockout timer, which prevents simultaneous operation of the back-up power system and normal control power.
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Abstract
A back-up power system for a traction elevator includes a power sensing device to sense a power loss or irregularity of the normal control power. An inverter timing system is connected to the power loss sensing device. The inverter timing system receives a power sensing signal from the power sensing device. A back-up power generating system communicates with the inverter timing system and generates an output to provide back-up power to the elevator system.
46 Citations
8 Claims
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1. A back-up power system for a traction elevator comprising:
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a power loss sensing device, wherein the power loss sensing device senses a power irregularity of normal control power; an inverter timing system operatively connected to the power loss sensing device, wherein the inverter timing system receives a power irregularity signal from the power loss sensing device; and a back-up power generating means communicating with the inverter timing system, wherein the back-up power generating means generates an output to provide back-up power, wherein the inverter timing system includes a job cycle lockout timer, which limits an amount of time that the back-up power generating means supplies output power and ensures operation of a full elevator cycle prior to returning to normal control power; and a main power lockout timer, which prevents simultaneous operation of the back-up power system and normal control power. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A back-up power system for a traction elevator comprising:
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a power loss sensing device, wherein the power loss sensing device senses a power irregularity of normal control power; an inverter timing system operatively connected to the power loss sensing device, wherein the inverter timing system receives a power irregularity signal from the power loss sensing device; and a back-up power generating means communicating with the inverter timing system, wherein the back-up power generating means generates an output to provide back-up power, the back-up power generating means including; a dc battery; a dc/dc converter operatively connected to the battery, wherein the dc/dc converter includes an H-bridge inverter connected to a single-phase transformer and a rectifier connected to a secondary winding of the single-phase transformer; and a three-phase generating means operatively connected to an output of the dc/dc converter. - View Dependent Claims (8)
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Specification