KR200454421Y1 - Power Equipment Reduced High Efficiency Elevator - Google Patents

Power Equipment Reduced High Efficiency Elevator Download PDF

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KR200454421Y1
KR200454421Y1 KR2020090009716U KR20090009716U KR200454421Y1 KR 200454421 Y1 KR200454421 Y1 KR 200454421Y1 KR 2020090009716 U KR2020090009716 U KR 2020090009716U KR 20090009716 U KR20090009716 U KR 20090009716U KR 200454421 Y1 KR200454421 Y1 KR 200454421Y1
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power
elevator
high efficiency
voltage signal
power equipment
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KR2020090009716U
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KR20110001078U (en
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정종태
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대한엘리베이터사업협동조합
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/302—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor for energy saving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/306—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor with DC powered elevator drive

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)

Abstract

본 고안은 전원설비 저감형 고효율 승강기에 대한 것으로서, 보다 상세하게는 전력제어회로내에 에너지저장매체를 탑재하여 제어함으로서 상기의 종래 발명의 문제점을 해소하고, 에너지 저장매체를 이용하여 가감속시 발생하는 Peak Power를 분산시켜 전원설비용량를 저감하며, 정전시 매체에 저장된 에너지를 이용하여 승강기를 최근접층으로 이동시켜 승객을 구출하는 데 활용할 수 있는 전원설비 저감형 고효율 승강기에 관한 것이다.The present invention relates to a power-efficient equipment high-efficiency elevator, and more particularly, to solve the problems of the conventional invention by mounting and controlling the energy storage medium in the power control circuit, which occurs during acceleration and deceleration using the energy storage medium. Distributing Peak Power reduces power equipment capacity and relates to a power equipment reduced type high efficiency elevator that can be utilized to rescue passengers by moving the elevator to the nearest floor using energy stored in the medium during power failure.

전원설비, 고효율 승강기, PWM 인버터, PWM 컨버터 Power equipment, high efficiency elevator, PWM inverter, PWM converter

Description

전원설비 저감형 고효율 승강기{High-effective elevator saving of power equipment}High-efficiency elevator saving of power equipment

본 고안은 전원설비 저감형 고효율 승강기에 대한 것으로서, 보다 상세하게는 전력제어회로 내에 에너지저장매체를 탑재하여 저장된 에너지를 작동시에 사용케 함으로 전원설비를 통해 공급되는 에너지를 감소시킬 수 있도록 제어함으로써, 종래의 문제점을 해소하고, 에너지 저장매체를 이용하여 가감속시 발생하는 Peak Power를 분산시켜 전원설비용량를 저감하며, 정전시 매체에 저장된 에너지를 이용하여 승강기를 최근접층으로 이동시켜 승객을 구출하는데 활용할 수 있는 전원설비 저감형 고효율 승강기에 관한 것이다.The present invention relates to a high-efficiency elevator for power supply reduction, and more specifically, by installing an energy storage medium in a power control circuit to use stored energy at the time of operation to control the energy supplied through the power supply to be reduced. In order to solve the conventional problem, to reduce the power equipment capacity by distributing the peak power generated during acceleration and deceleration by using the energy storage medium, and to rescue passengers by moving the elevator to the nearest layer by using the energy stored in the medium during power failure. The present invention relates to a power-efficient low efficiency elevator.

구동제어방식 측면에서의 승강기 기술은 1990년도를 전후한 대용량 전력용 반도체소자의 개발 및 초고속 집적회로의 등장에 따라 인버터 제어방식으로 급속히 전환되었다. Elevator technology in terms of drive control method has been rapidly converted to inverter control method according to the development of high-capacity power semiconductor devices around the 1990s and the emergence of ultra-high speed integrated circuits.

이와 같은 급속한 시장변화의 원인은 인버터제어만의 월등한 전력절감 효과와 유지보수 용이, 설치시간 단축 등과 같은 공급자 측면의 잇점이 복합됨으로써 소비자들의 요구에 부응하였기 때문이다.The reason for this rapid market change is that it meets the needs of consumers by combining the advantages of inverter control, such as superior power saving effect, ease of maintenance, and shortening installation time.

이러한 인버터 구동방식은 제동시의 에너지를 저항을 통해 소모하는 방식과 전원으로 회생시키는 방식으로 나누어진다. 주로 중,소용량 승강기가 저항제동 방식을 채택하는 반면에 대용량 승강기는 전원회생제동 방식을 채용한다. 근래에 에너지 자원의 고갈이라는 상황에 대처하기 위한 일환으로, 중국을 필두로 중,소용량 승강기에도 전원회생제동 방식이 권장되고 있는 실정이다.The inverter driving method is divided into a method of consuming energy during braking through a resistor and a method of regenerating the power. The medium and small capacity elevators adopt the resistance braking method, while the large capacity elevators adopt the power regenerative braking method. Recently, as a part of dealing with the depletion of energy resources, power regenerative braking is recommended for medium and small capacity elevators, especially in China.

이러한 시장변화의 저변에는 에너지 절감이라는 시대적인 요구와 전력반도체 가격의 하락에 따른 전원회생제동 방식의 제조원가 저하 등과 같은 공급자의 이해가 일치하기 때문이다. The reason behind this market change is that the demands of the energy savings coincide with the interests of suppliers such as the reduction of manufacturing cost of power regenerative braking method due to the drop in power semiconductor prices.

따라서, 향후 2~3년 내에 기존의 저항제동방식의 승강기는 전원회생제동 방식을 채용한 승강기에 그 자리를 내 줄 것이 거의 확실시 된다.Therefore, in the next two to three years, it is almost certain that the existing resistance braking type elevator will give its place to the elevator adopting the power regenerative braking method.

본 고안은 회생형 컨버터기술을 이용하여 에너지를 절감하고, 감속시 발전되는 에너지를 활용한 전원설비 저감형 고효율 승강기를 제공하는데 목적이 있다.The object of the present invention is to reduce energy by using regenerative converter technology and to provide a power-efficient high efficiency elevator using energy generated during deceleration.

본 고안은 3상 전원과 연결된 변압기를 통해 모터를 제어하는 전원설비 저감형 고효율 승강기에 있어서, 승강기를 구동하기 위하여 직류 전압 신호를 교류전압 신호로 펄스 변복조하는 PWM 인버터와, 전원을 회생하기 위하여 교류전압 신호를 직류 전압 신호로 펄스 변복조하는 PWM 컨버터와, 상기 PWM 컨버터의 직류 전압 신호를 전달받아 양방향 DC-DC 컨버터를 통해 회생 전력을 저장하는 저장장치를 포함한다.The present invention is a power efficient low-efficiency elevator for controlling a motor through a transformer connected to a three-phase power source, a PWM inverter for pulse-modulating and demodulating a DC voltage signal into an AC voltage signal to drive the elevator, and an AC to regenerate power. And a PWM converter for pulse-modulating and demodulating the voltage signal into a DC voltage signal, and a storage device receiving the DC voltage signal of the PWM converter and storing regenerative power through a bidirectional DC-DC converter.

본 고안의 전원설비 저감형 고효율 승강기는, 출력 전력이

Figure 112009045184140-utm00001
이다.The power supply reduction type high efficiency elevator of the present invention has a high output power.
Figure 112009045184140-utm00001
to be.

본 고안은 회생형 컨버터기술을 이용하므로 전원설비를 통해 공급되는 에너지를 절감할 수 있고, 감속시 발전되는 에너지를 저장하여 활용할 수 있는 효과가 있다.The present invention uses the regenerative converter technology to reduce the energy supplied through the power installation, there is an effect that can be used to store the energy generated during deceleration.

이하 본 고안의 실시를 위한 구체적인 내용을 도면을 참조하여 자세히 설명한다.Hereinafter, with reference to the drawings in detail for the implementation of the present invention will be described in detail.

삭제delete

도 2에서 보는 바와 같이 종래 발명의 저항제동형 구동방식 전원설비용량을 비교한 것으로, 세부적으로 설명하면 승강기 작동을 단순화하여 부하상승, 정지, 부하하강 및 제동, 정지의 주기로 작동된다. 작동시에는 가감속을 하게 되므로 정격에너지보다 매우 큰 Peck Power를 포함한다. 이같은 주기를 감안하여 승강기 작동주기를 유효값을 RMS(Root mean square)법을 이용하여 계산하면,
(a) 종래 승강기의 제동에너지(전력) 흐름으로 에너지를 소비하는 경우의
계산 예를 보면,

Figure 112010081291376-utm00002
이고, 여기서 상수 1.6은 승강기 작동주기와 Peck Power를 고려한 경험적 상수이다.
(b)회생제동형 구동방식의 전원설비용량 계산은
제동에너지 전원환원에 따른 주기가 제동형 대비 주기(T) 두 번 발생됨을 고려한
Figure 112010081291376-utm00003
이다.
이에 대한 근거는 에너지 저장형 및 전원설비 저감을 위한 고효율 전력변환기술개발(A development of efficient power conversion technology for reduction of power equipment; 저자명 : 구명완; 석사논문 한국산업기술대학교)를 참조하면 된다.As shown in FIG. 2, the resistance braking driving power supply capacity of the present invention is compared. In detail, the operation of the elevator is simplified to operate the cycle of load raising, stopping, loading and braking, and stopping. In operation, acceleration and deceleration are included, so it contains a Peck Power that is much larger than the rated energy. Taking these cycles into account, the effective value of the elevator operating cycle is calculated using the root mean square (RMS) method.
(a) When energy is consumed by the flow of braking energy (power) of a conventional elevator
In the calculation example,
Figure 112010081291376-utm00002
Where the constant 1.6 is the empirical constant taking into account the lift operating cycle and the Peck Power.
(b) Calculation of power supply capacity of regenerative braking drive type
Considering that the cycle according to the braking energy power reduction occurs twice the period compared to the braking type
Figure 112010081291376-utm00003
to be.
The reason for this can be found in A development of efficient power conversion technology for reduction of power equipment;

여기에서 Pin : 입력전력, Pout : 출력전력, T : 주기 이다.Here, Pin: input power, Pout: output power, T: period.

그러나 본 고안에 따른 전원설비 저감형 고효율 승강기는 고효율 구동회로를 통과하는 에너지의 평균치는 그대로 유지하면서, 그 RMS 값을 낮출 수 있는 시스템을 제시함과 동시에 고효율 구동회로 내에 에너지 저장장치를 이용하여 에너지를 조절할 수 있다.However, the power-saving type high efficiency elevator according to the present invention maintains the average value of the energy passing through the high efficiency driving circuit, while presenting a system capable of lowering the RMS value and using energy storage in the high efficiency driving circuit. Can be adjusted.

즉, 도 3에서 보는 바와 같이 본 고안에 따른 전원설비 저감형 고효율 승강기는 감속시 제동으로 발전되는 에너지를 저장하여 승강기 작동시 사용케 하여 종래의 회생제동형 구동방식의 전원설비용량과 달리 RMS(Root mean square)공식을 사용하여 아래와 같이 계산되며,

Figure 112011027303595-utm00004

이 결과는 기존의 저항제동형과 같이 되어 전원설비용량이 증가되지 않아 기존의 전원설비를 이용하여 이 고안을 이용할 수 있게 되는 것이다.That is, as shown in Figure 3, the power equipment reduced efficiency high-efficiency elevator according to the present invention stores the energy generated by the braking at deceleration to be used during operation of the elevator, unlike the power equipment capacity of the conventional regenerative braking driving method RMS ( Using the formula Root mean square),
Figure 112011027303595-utm00004

This result is the same as the existing resistance braking type, the power equipment capacity is not increased, it is possible to use this design by using the existing power equipment.

또한, 본 고안에 따른 전원설비 저감형 고효율 승강기는 전력제어회로내에 에너지저장매체를 탑재하여 제어함으로서 상기의 종래 발명의 문제점을 해소하고, 에너지 저장매체를 이용하여 가감속시 발생하는 Peak Power를 분산시켜 전원설비용량를 저감하며, 정전시 매체에 저장된 에너지를 이용하여 승강기를 최근접층으로 이동시켜 승객을 구출하는 데 활용할 수 있는 것이다.In addition, the power equipment reduced type high efficiency elevator according to the present invention solves the problems of the conventional invention by mounting the energy storage medium in the power control circuit, and distributes the peak power generated during acceleration and deceleration using the energy storage medium. It can be used to rescue passengers by moving the elevator to the nearest floor using energy stored in the medium during power failure.

즉, 입력전력의 평균값은 유지하면서, 상기 입력전력의 실효값을 저감할 수 있는, 피크전력 분산수단을 구비함이 바람직하다 할 것이다.That is, it would be desirable to provide a peak power dispersing means capable of reducing the effective value of the input power while maintaining the average value of the input power.

이때, 상기 에너지 저장장치로는 고체전극과 전해질용액에 직류전압을 흘려주면 그 접한 면에 전기가 저장되는 전기이중층현상을 작동원리로 한 전기이중층커패시터(EDLC: Electric Double Layer Capacitor)를 사용할 수 있다.In this case, as the energy storage device, an electric double layer capacitor (EDLC) using an electric double layer phenomenon in which electricity is stored on a surface in contact with a solid electrode and an electrolyte solution may be used. .

구체적으로 도면을 참조하여 본 고안에 따른 슈퍼캐패시터를 이용한 전원설비 저감형 고효율 승강기를 살펴보면, 본 고안은 3상 전원과 연결된 변압기를 통해 모터를 제어하는 슈퍼캐패시터를 이용한 전원설비 저감형 고효율 승강기에 있어서, 승강기를 구동하기 위하여 직류 전압 신호를 교류전압 신호로 펄스 변복조하는 PWM 인버터(50)와, 전원을 회생하기 위하여 교류전압 신호를 직류 전압 신호로 펄스 변복조하는 PWM 컨버터(30)와, 상기 PWM 컨버터의 직류 전압 신호를 전달받아 양방향 DC-DC 컨버터(40)를 통해 회생 전력을 저장하는 저장장치(45)를 포함하여 구성된다.
즉, 상기 저장장치(45)의 일종인 슈퍼캐패시터를 이용한 전원설비 저감형 고효율 승강기는 전력제어회로 내에 슈퍼캐패시터(Super Capacitor) 등의 에너지저장매체를 탑재하여 제어함으로서 종래의 문제점을 해소하고, 에너지 저장매체를 이용하여 가감속시 발생하는 Peak Power를 분산시켜 전원설비용량을 저감할 수 있다.
여기에서 상기 슈퍼 캐패시터는 다공성 전극(electrode : 양극 및 음극), 격리막(separator), 전해질(electrolyte), 집전체(current collector) 및 케이스로 구성되되, 전극재료가 전도성 고분자인 슈퍼 캐패시터임이 바람직하다.Specifically, referring to the drawings, a power equipment reduced type high efficiency elevator using a supercapacitor according to the present invention, the present invention is a power equipment reduced type high efficiency elevator using a supercapacitor for controlling a motor through a transformer connected to a three-phase power source. And a PWM inverter (50) for pulse demodulating the DC voltage signal into an AC voltage signal to drive the elevator, a PWM converter (30) for pulse demodulating the AC voltage signal into a DC voltage signal to regenerate the power supply, and the PWM converter. It is configured to include a storage device 45 for receiving the DC voltage signal of the to store the regenerative power through the bi-directional DC-DC converter 40.
That is, the power-efficient equipment-efficient high-efficiency elevator using the supercapacitor, which is a kind of the storage device 45, solves the conventional problem by controlling and installing an energy storage medium such as a supercapacitor in the power control circuit. The capacity of power equipment can be reduced by dispersing peak power generated during acceleration and deceleration using a storage medium.
Herein, the supercapacitor is composed of a porous electrode (electrode: anode and cathode), a separator, an electrolyte, a current collector, and a case, and the electrode material is preferably a supercapacitor of a conductive polymer.

삭제delete

이상의 설명은, 본 고안의 바람직한 실시예에 대해서만 도시하고 몇 가지에 한정하여 설명하였지만, 이로써만 한정되는 것은 아니며, 상기 설명된 본 고안이 갖는 많은 기능들의 조합 및 선택적 부가 등의 변경은 물론이고, 이하에서 기재되는 본 고안의 특허청구범위에 의해 마련되는 기술사상 및 그와 균등한 범위에서 다양하게 변경 실시할 수 있다는 것을, 본 고안이 속하는 기술분야에서 통상의 지식을 습득한 자라면 이해할 수 있을 것이다.Although the above description is only limited to the preferred embodiments of the present invention and described in a few, it is not limited to this, as well as changes in the combination and optional addition of many functions of the present invention described above, Those skilled in the art to which the present invention pertains can understand that the technical spirit provided by the claims of the present invention described below and various modifications can be made in the equivalent range. will be.

도 1은 종래 발명에 따른 에너지절감형 승강기의 전체적인 구성을 보여주는 도면.1 is a view showing the overall configuration of the energy-saving elevator according to the prior invention.

도 2는 종래 발명에 따른 저항제동형 구동방식과 회생제동형 구동방식의 설비용량을 비교한 비교도.Figure 2 is a comparison diagram comparing the capacity of the resistance braking drive method and the regenerative braking drive method according to the prior invention.

도 3은 본 고안에 따른 전원설비 저감형 고효율 승강기의 설비용량을 종래 발명인 회생제동형과 비교하기 위해 도시한 도면.Figure 3 is a view showing the capacity of the power plant reduced efficiency high-efficiency elevator according to the present invention to compare with the regenerative braking type of the present invention.

도 4는 본 고안에 따른 전원설비 저감형 고효율 승강기의 전체적인 구성을 보여주는 도면.Figure 4 is a view showing the overall configuration of the power equipment reduced type high efficiency elevator according to the present invention.

*도면의 주요부분에 대한 설명*Description of the Related Art [0002]

10 : 3상 전원 20 : 변압기(전원설비)10: three-phase power 20: transformer (power supply)

30 : PWM 컨버터 40 : 양방향 DC-DC 컨버터30: PWM converter 40: bidirectional DC-DC converter

45 : 슈퍼캐패시터 50 : PWM 인버터45: supercapacitor 50: PWM inverter

60 : 모터 70 : 승강기60: motor 70: elevator

Claims (3)

3상 전원과 연결된 변압기를 통해 모터를 제어하는 전원설비 저감형 고효율 승강기에 있어서,In the power-efficient low-efficiency elevator that controls the motor through a transformer connected to a three-phase power source, 승강기를 구동하기 위하여 직류 전압 신호를 교류전압 신호로 펄스 변복조하는 PWM 인버터와;A PWM inverter for pulse-demodulating a DC voltage signal into an AC voltage signal to drive the elevator; 전원을 회생하기 위하여 교류전압 신호를 직류 전압 신호로 펄스 변복조하는 PWM 컨버터와;A PWM converter for pulse-demodulating an AC voltage signal into a DC voltage signal to regenerate a power supply; 상기 PWM 컨버터의 직류 전압 신호를 전달받아 양방향 DC-DC 컨버터를 통해 회생 전력을 저장하는 캐패시터를 포함하여 구성되고,Receiving a DC voltage signal of the PWM converter is configured to include a capacitor for storing the regenerative power through a bidirectional DC-DC converter, 상기 전원설비 저감형 고효율 승강기는,The power equipment reduced type high efficiency elevator, 출력 전력이
Figure 112011027303595-utm00005
(여기에서 Pin : 입력전력, Pout : 출력전력, T : 주기)인 것을 특징으로 하는 전원설비 저감형 고효율 승강기.Output power
Figure 112011027303595-utm00005
High efficiency elevator with reduced power equipment, characterized in that (Pin: input power, Pout: output power, T: cycle). 삭제delete 삭제delete
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57199766A (en) * 1981-06-01 1982-12-07 Mitsubishi Electric Corp Power saving operating device for elevator
JPS58202268A (en) * 1982-05-21 1983-11-25 三菱電機株式会社 Power-saving operation controller for elevator
JP2004120981A (en) * 2002-09-30 2004-04-15 Rohm Co Ltd Dc-ac converter and ac power feeding method
KR100511644B1 (en) * 2002-12-30 2005-09-02 한국철도기술연구원 Parallel dc voltage supply system for recycled electric train cope

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57199766A (en) * 1981-06-01 1982-12-07 Mitsubishi Electric Corp Power saving operating device for elevator
JPS58202268A (en) * 1982-05-21 1983-11-25 三菱電機株式会社 Power-saving operation controller for elevator
JP2004120981A (en) * 2002-09-30 2004-04-15 Rohm Co Ltd Dc-ac converter and ac power feeding method
KR100511644B1 (en) * 2002-12-30 2005-09-02 한국철도기술연구원 Parallel dc voltage supply system for recycled electric train cope

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