KR20100137072A - The method of saving an energy by efficiency increase of a motor - Google Patents

The method of saving an energy by efficiency increase of a motor Download PDF

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Publication number
KR20100137072A
KR20100137072A KR1020090055296A KR20090055296A KR20100137072A KR 20100137072 A KR20100137072 A KR 20100137072A KR 1020090055296 A KR1020090055296 A KR 1020090055296A KR 20090055296 A KR20090055296 A KR 20090055296A KR 20100137072 A KR20100137072 A KR 20100137072A
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KR
South Korea
Prior art keywords
motor
inverter
frequency
rpm
increase
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KR1020090055296A
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Korean (ko)
Inventor
도영수
Original Assignee
장기운
도영수
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Priority to KR1020090055296A priority Critical patent/KR20100137072A/en
Publication of KR20100137072A publication Critical patent/KR20100137072A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency

Abstract

PURPOSE: A method of saving energy by increasing the efficiency of a motor is provided to obtain power gain more than 50% while maintain the same RPM as a conventional mechanism by reducing the speed of the motor in a half. CONSTITUTION: An inverter has more than double capacity of a motor to be replaced. According to the v / f characteristic curve of the motor, the frequency of the inverter is increased to be fit for a motor. All related parameters are controlled. A motor having a haft of capacity of the motor mounted in a conventional mechanism is used. A suitable wiring is performed in the motor. The RPM of the pulley connected with the conventional mechanism and the motor is reduced in a half. The increase of the RPM is controlled as the speed of an initial load according the increase of the frequency.

Description

모터의 효율 증가에 따른 에너지 절감 방법{The method of saving an energy by efficiency increase of a motor}The method of saving an energy by efficiency increase of a motor}

본 발명은 모터의 효율 증가에 따른 에너지 절감 방법에 관한 것으로, 더욱 상세하게는 모터의 v/f특성곡선에 따라 인버터의 주파수를 상승시키고, 공급되는 전압보다 낮은 전압에서 사용되는 모터를 사용하고, 주파수 상승에 따른 R.P.M의 증가를 모터의 풀리를 바꾸어 에너지를 절약하는 방법에 관한 것이다.The present invention relates to an energy saving method according to an increase in the efficiency of the motor, and more specifically, to increase the frequency of the inverter according to the v / f characteristic curve of the motor, using a motor used at a voltage lower than the supplied voltage, The increase in RPM as the frequency rises is related to a method of saving energy by changing the pulley of the motor.

일반적으로 기존 기계의 R.P.M이 최적이라고 전제할 때, 공급되는 전압과 동일한 전압의 모터를 사용하고 있고. 속도 조절을 위해서 D.C 모터, v.s모터, 유도전동기(인버터)를 사용하고 있으나, 동일한 R.P.M을 내면서 에너지를 절감하는 방법은 없었다.In general, assuming that the R.P.M of the existing machine is optimal, the motor is using the same voltage as the supplied voltage. D.C motor, v.s motor, and induction motor (inverter) are used to control the speed, but there is no way to save energy while paying the same R.P.M.

본 발명은 모터의 v/f특성곡선에 따라 인버터의 주파수를 상승시키고, 공급되는 전압보다 낮은 전압에서 사용되는 모터를 사용하고, 모터의 풀리를 바꾸어 50％이상의 에너지를 절약하는데 그 목적이 있다.An object of the present invention is to increase the frequency of the inverter according to the v / f characteristic curve of the motor, to use the motor used at a voltage lower than the supplied voltage, and to save 50% or more of energy by changing the pulley of the motor.

본 발명은 공급되는 전압에 적합하면서 교체될 모터의 2배 이상의 용량이 되는 인버터를 사용하여 모터의 v/f특성곡선에 따라 인버터의 주파수를 공급되는 전압보다 낮은 전압에서 사용되는 모터에 맞추어 상승시키면서 관련 파라메터도 전부 맞추어 주는 단계, 기존 기계에 장착되어 사용하고 있는 모터의 용량보다 1/2이하로 줄인 모터를 사용하여 모터에 맞는 결선을 하는 단계, 상기 단계 후 기존 기계와 모터에 연결된 풀리를 바꾸어 회전을 2배 감속시켜줌으로서 주파수 상승에 따른 R.P.M 증가를 처음의 부하속도와 동일하게 맞추어 50％이상의 전력 이득을 얻을 수 있는 단계로 이루어진 것에 특징이 있다.The present invention uses an inverter that is suitable for the supplied voltage and is twice as large as the motor to be replaced, while raising the frequency of the inverter according to the v / f characteristic curve of the motor to match the motor used at a voltage lower than the supplied voltage. Match all the relevant parameters, connect the motor with the motor which is less than 1/2 of the capacity of the existing motor, change the pulley connected to the existing machine and the motor after the above step. By decelerating the rotation by 2 times, it is characterized by consisting of a step of obtaining a power gain of 50% or more by adjusting the RPM increase according to the frequency increase to the same as the initial load speed.

본 발명은 모터의 v/f특성곡선에 따라 인버터의 주파수를 상승시키고, 공급되는 전압보다 낮은 전압에서 사용되는 모터로서 기존 기계에 장착되어 사용하고 있는 모터의 용량보다 1/2이하로 줄인 모터를 사용하고, 모터의 풀리를 바꾸어 2배의 감속을 통하여 기존기계와 동일한 회전수를 유지하면서 50％이상의 전력 이득을 얻을 수 있다.The present invention is to increase the frequency of the inverter according to the v / f characteristic curve of the motor, the motor used at a voltage lower than the supplied voltage as a motor that is reduced to less than 1/2 of the capacity of the motor used in the existing machine It is possible to change the pulley of the motor and reduce the power by 2 times to obtain more than 50% power gain while maintaining the same rotation speed as the existing machine.

본 발명은 공급되는 전압을 이용하여 기존 기계의 R.P.M이 최적이라고 전제하고 작동시킬 때, 공급되는 전압에 적합하면서 교체될 모터의 2배 이상의 용량이 되는 인버터를 사용한다.The present invention uses an inverter that is suitable for the supplied voltage and has twice the capacity of the motor to be replaced when operating under the assumption that R.P.M of the existing machine is optimal using the supplied voltage.

모터 v/f특성곡선에 따라 인버터의 주파수를 공급되는 전압보다 낮은 전압에 서 사용되는 모터에 맞추어 상승시키면서 관련 파라메터도 전부 바꾸어 준다.According to the motor v / f characteristic curve, the frequency of the inverter is increased according to the motor used at the voltage lower than the supplied voltage, and all related parameters are changed.

기존 기계에 장착되어 사용하고 있는 모터의 용량보다 1/2이하로 줄인 모터를 사용하고 모터에 맞는 결선을 하면 √3이상의 힘이 더 생기게 되어 모터의 힘이 부족하지 않으면서, 인버터의 주파수 상승을 통행서 회전은 2배가 된다.If you use the motor which is less than 1/2 of the capacity of the motor installed in the existing machine and connect it to the motor, the power of √3 or more is generated, so that the frequency increase of the inverter can be achieved without the power of the motor. Toll turn doubles.

모터에 연결된 풀리를 바꾸어 회전을 2배 감속을 시키면 기존 기계와의 동일한 회전수를 유지하면서 50％이상의 전력 이득을 얻을 수 있다.By changing the pulley connected to the motor and decelerating the rotation twice, power gain of more than 50% can be achieved while maintaining the same rotation speed as the existing machine.

상기와 같은 본 발명인 모터의 효율 증가에 따른 에너지 절약방법을 실시예를 통하여 상세히 설명하면 다음과 같다.When explaining the energy saving method according to the increase of the efficiency of the present invention as described above in detail through the embodiment.

380v 전압이 들어오고 기존 기계의 모터가 100마력 380V이고, R.P.M이 최적이라고 전제를 할 때,When the 380v voltage comes in and the motor of the existing machine is 100 horsepower 380V, and the R.P.M is optimal,

제1단계 : 400v용 인버터(교체될 220V 모터의 2배 이상의 용량)의 Base 주파수를 60Hz에서 120Hz롤 바꾸고 관련 파라메터도 전부 맞추어 주는 단계Step 1: Change the base frequency of the 400V inverter (more than twice the capacity of the 220V motor to be replaced) from 60Hz to 120Hz and match all related parameters.

제2단계 : 50마력 220v모터를 사용하여 제1공정에서의 인버터와의 결선을 220v으로 하는 단계The second step: using a 50 hp 220v motor to wire 220v with the inverter in the first step

제3단계 : 기존 기계와 모터에 연결된 풀리를 바꾸어 주는 단계Step 3: change the pulley connected to the existing machine and motor

제1단계의 인버터를 통하여 120Hz에 380v가 인가되므로 제2단계의 50마력 220v모터에 √3이상의 힘이 증대되면서 100마력 380V모터를 사용할 때 비해 힘이 떨어지지 않고, Base 주파수를 60Hz에서 120Hz롤 바꿔 줌으로서 회전도 2배가 되므로, 2배 빨라진 회전을 기존 기계의 회전과 동일하게 맞추어야 하기 때문에 제3단 계에서 풀리를 바꿔 2배 감속을 하면 토크는 2배로 늘어난다.Since 380v is applied at 120Hz through the inverter of the first stage, the power of √3 or more is increased to the 50hp 220v motor of the second stage, and the power does not drop as compared with the 100hp 380V motor.The base frequency is changed from 60Hz to 120Hz. Since the rotation is also doubled by zooming, the rotation that is twice as fast should be matched with the rotation of the existing machine, so when the pulley is changed twice in step 3 and decelerated twice, the torque is doubled.

따라서 제1단계와 2단계를 통하여 모터에서는 √3이상의 힘과 2배의 회전이 발생되는 효과가 있고, 제3단계에서 제1,2단계를 통하여서 2배 빨라진 회전을 풀리를 바꾸어 2배의 감속을 함으로써 50％이상의 전력 이득을 얻을 수 있다.Therefore, through the first and second stages, the motor has an effect of generating more than √3 force and twice the rotation, and in the third stage, through the first and second stages, the rotation is doubled and the deceleration is doubled. By doing this, a power gain of 50% or more can be obtained.

Claims (1)

기존 기계의 R.P.M이 최적이라고 전제를 하고 기계를 작동시킴에 있어서, 공급되는 전압에 적합하면서 교체될 모터의 2배 이상의 용량이 되는 인버터를 사용하여 모터의 v/f특성곡선에 따라 인버터의 주파수를 공급되는 전압보다 낮은 전압에서 사용되는 모터에 맞추어 상승시키면서 관련 파라메터도 전부 맞추어 주는 단계,In operating the machine on the premise that the RPM of an existing machine is optimal, the frequency of the inverter is adjusted according to the v / f characteristic curve of the motor using an inverter that is suitable for the supplied voltage and is twice as large as the motor to be replaced. While raising the motor to be used at a voltage lower than the supplied voltage to match all the relevant parameters, 기존 기계에 장착되어 사용하고 있는 모터의 용량보다 1/2이하로 줄인 모터를 사용하여 모터에 맞는 결선을 하는 단계,The steps for connecting to the motor using the motor which is less than 1/2 of the capacity of the motor installed in the existing machine, 상기 단계 후 기존 기계와 모터에 연결된 풀리를 바꾸어 회전을 2배 감속시켜줌으로서 주파수 상승에 따른 R.P.M 증가를 처음의 부하속도와 동일하게 맞추어 50％이상의 전력 이득을 얻을 수 있는 단계로 이루어진 것을 특징으로 하는 모터의 효율 증가에 따른 에너지 절감 방법After the step, by changing the pulley connected to the existing machine and the motor to reduce the rotation by 2 times, the step of increasing the RPM according to the frequency rise to the same as the initial load speed, characterized in that the step of obtaining a power gain of more than 50% Energy saving method by increasing motor efficiency
KR1020090055296A 2009-06-22 2009-06-22 The method of saving an energy by efficiency increase of a motor KR20100137072A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101703973B1 (en) 2016-07-04 2017-02-09 한국디지탈콘트롤 주식회사 A system using the best efficiency point for squared torque load
KR102582402B1 (en) 2023-04-06 2023-09-25 한국디지탈콘트롤 주식회사 Operation system and method for optimizing energy ficiency of induction motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101703973B1 (en) 2016-07-04 2017-02-09 한국디지탈콘트롤 주식회사 A system using the best efficiency point for squared torque load
KR102582402B1 (en) 2023-04-06 2023-09-25 한국디지탈콘트롤 주식회사 Operation system and method for optimizing energy ficiency of induction motor

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