Escalator energy recovery device
An energy recovery device and escalator technology, which can be used in escalators, transportation and packaging, etc., can solve the problem of low utilization rate of electric energy
Active Publication Date: 2017-09-26
HITACHI ELEVATOR GUANGZHOU ESCALATOR
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] Based on this, it is necessary to provide an escalator energy recovery device for the low utilization rate of electric energy in the prior art
Method used
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Embodiment Construction
[0013] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0014] figure 1 It is a schematic structural diagram of an energy recovery device for an escalator system in one embodiment. Such as figure 1 Shown, the escalator system energy recovery system of the present invention comprises:
[0015] The first frequency converter 10 installed on the downward escalator; the second frequency converter 20 installed on the upward escalator; the voltage comparator 30; the first switch 40;
[0016] The voltage comparator 30 is connected to the first DC bus 101 of the first inverter 10 and the second DC bus 201 of the second inverter 20, and receives the first DC bus 101 and the second DC bus 201 respectively. a voltage and a second voltage, and send a first control signal to the first switch 40 according to the difference between the first voltage and the second voltage;
[0017] The first switch 40 is connected to the...
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The invention relates to an energy recovery device for an escalator system, comprising: a first frequency converter arranged on a descending escalator; a second frequency converter arranged on an upward escalator; a voltage comparator; a first switch; the voltage comparator and the first frequency converter The first DC bus of the inverter and the second DC bus of the second frequency converter are connected to each other, receive the first voltage and the second voltage from the first DC bus and the second DC bus respectively, and receive the first voltage and the second voltage from the first DC bus and the second DC bus respectively. The difference between the two voltages sends a first control signal to the first switch; the first switch is connected to the first DC bus, the second DC bus and the voltage comparator, and is disconnected or disconnected according to the first control signal Closed; when closed, the electric energy generated by the first DC bus is supplied to the second DC bus. The energy recovery device of the escalator system can provide the energy generated by the descending escalator to the ascending escalator, thereby reducing the power of the braking resistor for consuming excess regeneration energy, and effectively improving the energy utilization efficiency.
Description
technical field [0001] The invention relates to the technical field of escalators, in particular to an energy recovery device for escalators. Background technique [0002] With the development of the times and the advancement of science and technology, the application of escalators has been greatly developed, and the use of escalators in shopping malls, hotels, stations, airports, and subways continues to increase. In these applications, escalators basically work continuously for more than 12 hours a day. In public transportation facilities such as airports, subways, and railway stations, escalators run all night long. From the perspective of usage, the energy consumption of escalators is huge. A group of ordinary escalators, the power is generally 8kW each, if working 12 hours a day, the annual power consumption can reach 70,000 kilowatts. Assuming that two sets of escalators are installed on each floor of a large shopping mall, and a shopping mall is counted as 9 floors,...
Claims
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IPC IPC(8): B66B31/00
Inventor 陈永金
Owner HITACHI ELEVATOR GUANGZHOU ESCALATOR