WO2018150240A1 - Démarreur souple résistif pour moteur électrique - Google Patents

Démarreur souple résistif pour moteur électrique Download PDF

Info

Publication number
WO2018150240A1
WO2018150240A1 PCT/IB2017/057773 IB2017057773W WO2018150240A1 WO 2018150240 A1 WO2018150240 A1 WO 2018150240A1 IB 2017057773 W IB2017057773 W IB 2017057773W WO 2018150240 A1 WO2018150240 A1 WO 2018150240A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromotor
soft
main
circuit
coil
Prior art date
Application number
PCT/IB2017/057773
Other languages
English (en)
Inventor
Gholamabbas DAVOODABADI
Original Assignee
Davoodabadi Gholamabbas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Davoodabadi Gholamabbas filed Critical Davoodabadi Gholamabbas
Publication of WO2018150240A1 publication Critical patent/WO2018150240A1/fr

Links

Classifications

    • 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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor

Definitions

  • the present invention is related to electronics field, and it is a device to start the electromotors in a soft gradual way.
  • Hall Effect sensor mounted to the bus bar in a small current sensing region that is created by having a pair slots in the bus bar to direct current.
  • a pair of magnetic pins extended perpendicular from the bus bar to create the magnetic flux for the Hall Effect sensor to sense current flow through the current sensing region.
  • the Hall Effect sensor circuit board also contains a thermostat which is mounted with adequate insulation yet in thermal communication with the bus bar.
  • the next similar invention under publication number of US9160257 B2 in 2013 is "Soft Starter system and method of operating same" registered in USPTO.
  • the invention is a system and method for automatically defining and tuning operating parameters for a motor control device electrically connectible to an AC motor and a controller that is programmed to define a motor start-up function based on a rated current of the motor, the motor start-up function comprising an initial torque factor and an initial ramp time.
  • the controller also triggers switching devices of the motor according to the motor start-up function to inject current into the motor during a first trial run, monitors operating conditions of the motor and motor control device during the first trial run, modifies the motor start-up function based on the monitored operating conditions , and triggers the plurality of switching devices according to the modified motor start-up function to inject current into the motor during the subsequent trial run.
  • the present invention is a new method for resolving the mentioned problems and drawbacks such as reducing the initial startup stress (shock) of electromotor, which in turn leads to energy conservation and is also cheaper.
  • the purposes of the invention of the resistive soft start except for the points mentioned above, are as follows:
  • the inventive method of the invention is the employment of resistive soft start electromotor (soft operation) instead of the existing soft starters such that the initial coil resistance change can reduce the initial shock( stress) entering the electromotor. In this starter, no heat is produced which causes the energy waste by heat.
  • inverters and existing soft starts are separate devices which are connected to machineries and cause soft start, for the preparation of which a great amount of expenses should be covered so they could be attached to related device and machinery whereas this invention has a very low expense and does not consume energy and creates the resistance by changing electromotor coil and brings about the soft start.
  • soft starter or inverter This method removes the expenses of these devices purchase. We had better mention that this design is appropriate for almost 80% of electromotors.
  • Resistive soft starter of electromotors creates resistance by changing coil design itself instead of frequency change, and the electromotor starts operating by low speed. When it obtained 60 to 80 percent of its own RPM (revolutions per min), the system disconnects the resistance by the help of contactor and timer from the circuit and put the electromotor in a normal condition. Design calculations for all the electromotors follow the similar rule. The system of the rule starts by series electromotor and continues in parallel mode after two to three seconds under normal conditions of the engine. As to the AC motor, for changing the electromotors from simple to resistive soft start mode , main coins of copper wire s cross section are divided and no change is made in RPM. Thus, main resistance increases by two times. This system returns to main circuit by contactor. In electromotors of compressors and pumps and electromotors of other applications, an installation of part for preliminary control can cause soft start. It had better be mentioned that this plan has been tested in single-phase and double-phase centrifugal pumps
  • main electric fuse switch (Fig. 3)
  • the current first passes through the main coil LI and permanent contact of connection. ( 6 th column, Figures number 5) and then the main coil (L2).
  • the other path of the electric connection by permanent contact KMl is through (the third column of the figures) is in the path of timer KT 1 which triggers the operation of the timer.
  • the electromotor shaft is mounted in central rotor hole by hydraulic press.
  • This resistive soft start electromotor (soft startup), can be applied with respect to 80% electromotors and compressors and pumps which are employed for different usages. Resolving the rush-in current primary shock leads to the longevity of electromotors, which causes more energy conservation, is cost-effective and available.
  • Figure number three Soft start special coil for single-phase copper wire cross section
  • Figure number four Switching primary coil after two seconds to normal condition (single phase)
  • Figure number six Soft starter coil system and wiring position in triple- phase motor
  • Figure number seven Wiring and switching mode of winding in triple- phase motor after startup
  • Figure number eight Schematic of centrifugal electropump
  • Figure number nine Explosive figure of electropump
  • the present invention is able to be used in up to 80% of the electromotors. However, we hereby describe its application in centrifugal pumps.
  • Two fixing stands of pump one steel pipe of internal crust, four 8- millimeter stud bolts, 8 eight-millimeter nuts, three steel bushings , two mechanical seals, two cylindrical rings, one shaft, One flat bearing, triple multi-core wire, two steel head pumps, O-ring, one stator as explained above, one rotor as explained above, 6204 ball bearing, 6203 ball bearing, ten 6-millimeter bolt of 1.5 centimeter long , two spring rings, O-ring for cable , 100 cc edible paraffin wax, 4 impellers, countersunk screws , eight Allen screws, one steel pipe of external crust of pump, 5 diffusers, cable socket 1- Three-ply cable is tied by O-ring cable of number 25 (Fig. 9) upon part 24(Fig. 9) (steel head pump) which is sealed by cylindrical O-ring inside gland.
  • This single-phase circuit is tested by resistive soft start electromotor.
  • the first example is a normal coil for an electromotor with system of single-phase circuit capacitor (Fig. 2)
  • the second example Simple coil for three-phase circuit electromotor (Fig. 5)
  • circuit (Fig. 7) which is a parallel circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

L'invention d'un moteur électrique à démarrage progressif résistif est un nouveau procédé pour résoudre les problèmes et les inconvénients des présents démarreurs souples comprenant un choc primaire d'appel de courant et conserve à la fois l'énergie et est rentable. L'invention concerne l'utilisation d'un moteur électrique à démarrage souple (démarrage progressif) résistif au lieu des démarreurs actuels. Ainsi, le changement de résistance de bobine peut réduire le choc primaire frappant le moteur électrique. Dans ce démarreur, aucune chaleur n'est produite. Il n'y a donc pas de dissipation d'énergie par la chaleur. Il n'y a pas besoin d'obtenir des dispositifs tels qu'un démarreur ou un onduleur souple et, en conséquence, les dépenses d'acquisition pour ces dispositifs sont supprimées.
PCT/IB2017/057773 2017-02-15 2017-12-11 Démarreur souple résistif pour moteur électrique WO2018150240A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IR139550140003014565 2017-02-15
IR13953014565 2017-02-15

Publications (1)

Publication Number Publication Date
WO2018150240A1 true WO2018150240A1 (fr) 2018-08-23

Family

ID=83231059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/057773 WO2018150240A1 (fr) 2017-02-15 2017-12-11 Démarreur souple résistif pour moteur électrique

Country Status (1)

Country Link
WO (1) WO2018150240A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3780378A1 (fr) * 2019-08-13 2021-02-17 Davoodabadi, Gholamabbas Démarreur progressif résistif pour électromoteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1901891B1 (fr) * 2005-07-11 2016-09-28 Black & Decker Inc. Demarrage doux pour moteur electrique d'un outil electrique
CN205945566U (zh) * 2016-06-02 2017-02-08 湖南科太电气有限公司 一种一体化高压电动机软起动柜

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1901891B1 (fr) * 2005-07-11 2016-09-28 Black & Decker Inc. Demarrage doux pour moteur electrique d'un outil electrique
CN205945566U (zh) * 2016-06-02 2017-02-08 湖南科太电气有限公司 一种一体化高压电动机软起动柜

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3780378A1 (fr) * 2019-08-13 2021-02-17 Davoodabadi, Gholamabbas Démarreur progressif résistif pour électromoteur

Similar Documents

Publication Publication Date Title
KR100337688B1 (ko) 유도전동기로의전력공급방법
Larabee et al. Induction motor starting methods and issues
KR101776354B1 (ko) 전기 기기의 보호 회로 및 보호 방법
CN101673980B (zh) 用于电机的组件
CN101469697B (zh) 压缩机驱动装置及制冷循环装置
KR20120031876A (ko) 압축기 및 밀폐형 회전 전기 기기
WO1995017779A3 (fr) Machines electriques
WO2018150240A1 (fr) Démarreur souple résistif pour moteur électrique
EP3780378B1 (fr) Démarreur progressif résistif pour électromoteur
CN102723833B (zh) 一种具有不平衡电压补偿作用的三相感应电动机
Kudelina et al. Heat Pump Induction Motor Faults Caused by Soft Starter Topology—Case Study
JP2010213510A (ja) ドライ真空ポンプ用電源装置、及びその運転方法
Giceva et al. Single phasing of three phase induction motors under various load conditions
JP2798033B2 (ja) 誘導電動機による駆動装置及びその始動運転方法
CN102035334A (zh) 直驱潜油螺杆泵的开关磁阻电机
US8028540B2 (en) Four terminal hermetic bushing for use with single-phase electrical service line and three-winding motor
CN215733900U (zh) 一种矿山防爆用开关磁阻调速牵引电动机
CN205160427U (zh) 一种电机驱动器
CN216252287U (zh) 一种限流电机
Soderholm Selecting and using electric motors
Sitorus et al. The Comparison Of Starting Current In Three-Phase Induction Using Direct And Autotransformer Using Matlab Simulation
US3609430A (en) Armature with high resistance end rings and heat dissipation arrangement
RU81603U1 (ru) Погружной электродвигатель с системой защиты от перегрева
Finley Advantages of optimizing motor & drives to ensure best performance & total cost of ownership
CN111293925A (zh) 大功率电机分级启动运行的方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17896636

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17896636

Country of ref document: EP

Kind code of ref document: A1