Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B25/00—Control of escalators or moving walkways
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Definitions

• the invention relates to a method for the electronic control of passenger conveyor systems, such as escalators or moving walks.
• escalator drives can be switched on or off depending on the presence or absence of people, so that the escalator either stands or runs at normal speed. The same naturally applies to moving walks. It is disadvantageous to note here that, due to the constant switching on and off, high current peaks occur, which have a disadvantageous effect on the service life of the drive.
• the aim of the subject matter of the invention is to design a method for the electronic control of passenger conveyor systems, such as escalators or moving walkways, with which the passenger conveyor can be regulated on the one hand as required.
• passenger conveyor systems such as escalators or moving walkways
• current peaks and costs for reactive power are to be eliminated and the total energy consumption is to be reduced.
• this goal is achieved in that the drive of the personal conveyor system is switched on and the personal conveyor system is regulated to a predetermined standby speed by means of at least one frequency converter, which is maintained until a monitoring device detects personal operation and the passenger conveyor system via the frequency converter is regulated to a predetermined transport speed and the drive is switched to mains operation when the transport speed is reached or a predetermined load or number of people is exceeded.
• the speed of the personal conveyor system in particular an escalator or an escalator, can be regulated on the basis of a standby speed, with the aid of the frequency converter, as required.
• Current peaks and costs for reactive current are eliminated, in particular in view of the fact that the frequency converter is not designed in accordance with the power of the motor but rather is dimensioned smaller.
• the total energy consumption can be reduced by the measures according to the invention.
• the flow diagram shows the circuit diagram for example of an escalator.
• the escalator is switched on and started.
• the escalator is regulated on a ramp via frequency converters to a standby speed of 0.2 m / s in this example. This speed is maintained until a monitoring device, for example a light barrier 3, is actuated. The light barrier 3 then controls the further process.
• the escalator is also regulated on a ramp via the frequency converter to a normal speed of, for example, 0.5 m / s.
• This state is maintained until a predetermined load or number of people is exceeded, for example the slip of the drive motor as the starting criterion. This is defined by phase 5.
• phase 6 i.e. If the specified load or number of people is exceeded, the drive is switched to mains operation.
• This diagram shows two different modes of operation.
• mode of operation 7 a single drive motor 8 with a star-delta connection is specified, the switchover to mains operation first being switched over to the mode of operation of the less powerful star mode 9.
• the drive 8 is switched from star 9 to delta operation 10.
• a plurality of drive motors 12 are provided, which are switched on or off in line with the load in line operation, with criteria such as the slippage of the motor or motors being able to be used as a basis for the connection or disconnection.
• the remaining motor is switched to the frequency converter in phase 13 when there is no longer any user on the escalator and in phase 14 the speed is regulated to standby mode, as assumed here 0.2 m / s .
• the frequency converter is only dimensioned for half the drive power of the motor, a voltage-controlled frequency converter being used instead of the reactive current-intensive frequency-controlled frequency converter.
• the escalator can then be switched off again from the standby speed of 0.2 m / s.

Landscapes

• Escalators And Moving Walkways (AREA)
• Control Of Conveyors (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=6486259

Family Applications (1)

Country Status (10)

Families Citing this family (9)

Family Cites Families (8)

• 1993
  • 1993-04-26 DE DE4313424A patent/DE4313424C2/de not_active Expired - Lifetime
• 1994
  • 1994-01-21 KR KR1019950700499A patent/KR950704178A/ko not_active Application Discontinuation
  • 1994-01-21 EP EP94905670A patent/EP0696255A1/de not_active Withdrawn
  • 1994-01-21 JP JP6523790A patent/JPH08512273A/ja active Pending
  • 1994-01-21 BR BR9406508A patent/BR9406508A/pt unknown
  • 1994-01-21 WO PCT/EP1994/000151 patent/WO1994025386A1/de not_active Application Discontinuation
  • 1994-04-15 HR HRP4313424.6A patent/HRP940249A2/xx not_active Application Discontinuation
  • 1994-04-22 YU YU21794A patent/YU21794A/sh unknown
  • 1994-04-25 CN CN94104633A patent/CN1099005A/zh active Pending
  • 1994-04-25 SI SI9400192A patent/SI9400192A/sl unknown

Non-Patent Citations (1)

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