WO2001035516A1 - Moteur a courant alternatif a demarreur integre - Google Patents

Moteur a courant alternatif a demarreur integre Download PDF

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Publication number
WO2001035516A1
WO2001035516A1 PCT/CN1999/000182 CN9900182W WO0135516A1 WO 2001035516 A1 WO2001035516 A1 WO 2001035516A1 CN 9900182 W CN9900182 W CN 9900182W WO 0135516 A1 WO0135516 A1 WO 0135516A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
starter
capacitor
starting
power
Prior art date
Application number
PCT/CN1999/000182
Other languages
English (en)
Chinese (zh)
Inventor
Lifa Yuan
Original Assignee
Guangdong Provincial Special Economic Zones Industry Co. Ltd.
Great Sino Industries Limited
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 Guangdong Provincial Special Economic Zones Industry Co. Ltd., Great Sino Industries Limited filed Critical Guangdong Provincial Special Economic Zones Industry Co. Ltd.
Priority to PCT/CN1999/000182 priority Critical patent/WO2001035516A1/fr
Priority to AU10268/00A priority patent/AU1026800A/en
Publication of WO2001035516A1 publication Critical patent/WO2001035516A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
    • 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
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

Definitions

  • the present invention relates to an AC motor with a starter, and more particularly, to an AC motor with a new type of starter, particularly a starter composed of a capacitor.
  • a motor starter is usually attached to reduce the starting current.
  • a common starter is a resistance or inductance connected in series to the motor winding circuit at startup, or a three-phase motor winding is used as a person / ⁇ connection. . Resistive starters dissipate a lot of energy in the starting resistance, especially for the occasion of frequent starting.
  • the energy loss of an inductive starter will be smaller, but the cost is higher.
  • the inductor with an iron core is used to reduce the volume of the inductor, the weight increases, and it may also increase the harmonic pollution of the power grid.
  • the man / ⁇ start method requires that each phase of the motor winding is led out during the manufacture of the motor coil.
  • the three-phase winding constitutes a triangular connection during operation.
  • the spark on the switch contact of the starter is large, and the contact is easy to burn. Too much power.
  • An object of the present invention is to provide an AC motor with a starter composed of a capacitor, which has low starting power consumption and low cost compared with the conventional starter.
  • Another object of the present invention is to provide an AC motor with a starter composed of a capacitor.
  • the starting capacitor can double as a compensator and has the function of compensating the power factor of the power grid.
  • Yet another object of the present invention is to provide an AC motor with a starter composed of a capacitor. When the motor is stalled, it has a limited current effect and has a short-circuit protection function for the motor.
  • An AC motor with a starter whose starter is connected between the power terminal of each phase and the input end of the motor, is characterized in that the starter is composed of at least one capacitor; ⁇ Control the switching on or off of the capacitor.
  • the capacitor of the starter is switched by the switching device and stays between the grid circuit or the input terminals of the motor, and then acts as a compensator to compensate the power factor of the grid in situ.
  • the starting capacitor is composed of a capacitor for power factor compensation through replacement.
  • the starting capacitor may be a capacitor combination composed of a plurality of capacitors, and a lead wire may be provided at a node of each capacitor in series and parallel to provide a multi-stage starter with a gradually increased capacitance.
  • This solution can not only make the start-up process be multi-stage, in order to obtain a better effect of suppressing the start-up current, but also can be a scheme of a multi-stage speed regulation device.
  • the scheme of the present invention for forming a starter with a capacitor has obvious advantages. Due to the loss of the capacitor itself In order to make it extremely small, the energy consumption of the starter during startup is small. Capacitive impedance not only improves the power factor during the startup process, but also can be left in the line after startup. It can be used as a compensator with the function of local compensation. The investment of a component can be fully utilized. In addition, the device of the present invention has a simple structure and low cost.
  • the starter of the present invention When the starter of the present invention is in the starting position, that is, when it is between the power source and the motor, once the motor stalls, the current limiting effect of the capacitor of the starter of the present invention will inhibit the stalled current at this time, which will appear as a short circuit. Protected function.
  • FIG. 1 is a schematic diagram of a starter structure in a first embodiment of the present invention
  • Fig. 2 is a circuit configuration diagram of a second embodiment of the present invention.
  • FIG. 1 is a schematic diagram of the structure of a starter according to a first embodiment of the present invention.
  • the figure shows only the structure of a starter. If the motor is three-phase, such a starter will have one for each phase.
  • the starter of this example is an example of a four-stage starter composed of a combination of two capacitors. It is a scheme based on a basic scheme in which a capacitor is used as a starting element. Since this basic scheme passes the embodiment, The explanation can be clearly understood, so it is no longer explained by example alone. As can be seen in the figure, two capacitors C 2 and C 3 are arranged in a box body 5, and their capacitances C 2 ⁇ C 3 are connected in series with each other.
  • K s is a start switch and has four sets of fixed contacts 1 and 2-2. ', 3-3', 4- 4 ', where 1' and 2 'are unused empty contacts, the capacitor (: one end of 2 is connected to contact 1, contact 3, and contact 4', and the other end It is connected to one end of capacitor C 3 , and its connection point is also connected to contacts 2, 4, and 3 '.
  • One of the moving contacts (K s ' -K s ") of KS is connected to the power source, and the other is connected to the above capacitor C 3 To the other end of the motor.
  • the start-up process is a process in which the switch ⁇ is gradually changed from the l- contact group to the 4-4 'contact group.
  • the first level K s is in the 1-1 'contact group, there are two capacitors C 2 and C 3 connected in series between the power supply and the motor line, and the capacitance (C 2 XC 3 ) I (C 2 + C 3 )
  • the second and third stages K s are in turn on the contact groups 2-2 ′ and 3-3 ′, and there are capacitors between the power supply and the motor ( 3 and C 2 , at the fourth level! ⁇
  • the contact group 4 -4 ' there are capacitors (: 2 and (: 3 , capacitors (C 2 + C 3 )) connected in parallel between the power supply and the motor.
  • the setting condition C 2 ⁇ C 3 is to ensure that the starting capacitance is gradually reduced.
  • Fig. 2 is a circuit diagram showing a second embodiment of the present invention.
  • This is an example of a three-phase motor 7.
  • Reference numeral 6 in the figure is a starter similar to the above-mentioned first embodiment.
  • the reference numerals are still applicable in this example, K is a three-phase linkage power switch, and ⁇ is a three-phase double-pole double Throw a conversion pass.
  • the pole is short, i.e., ⁇ switch ⁇ 1 ⁇ ', ⁇ 1 ⁇ ', K 1C; knife and the fixed contacts 16, respectively, 10, 13 communicates boot is completed,!
  • the switch when starting, the switch is in the starting position.
  • the starter 6 When the power switch K is closed, the starter 6 is connected to the circuit. After the start switch K s (see the example above), the motor 7 is gradually increased until the final stage (as above). Example fourth level). Then the transfer switch is switched to the running position. At this time, the motor 7 is running at full voltage, and the capacitor in the starter is connected across the three-phase power lines to become a parallel compensation capacitor. The starter is turned into a compensator.
  • the important feature of this example compared to the previous example is that in this example, the capacitor in the starter is the starting element during the startup process and the compensation element is in the running state after the startup. Therefore, the function is neat and the degree of component utilization! 3 ⁇ 4
  • the transfer switch and the start switch K s of the starter in this example can be combined into one switch, which has both the start and changeover functions, and even incorporates the function of the power switch ⁇ on this switch.
  • All of these switches can be any type of switch known to meet the requirements, electromagnetic, mechanical, or electronic.
  • the switch in order to ensure that the starting capacitor must be connected between the power source and the motor during startup, the switch can be attached with control measures to ensure that once the motor stops or is powered off, the switch immediately switches to the initial starting position, which is shown in the figure. 1 of 2! ⁇ And! ⁇ Return to fixed contacts 1-1 'and 16, 10, 13 respectively.
  • control measures are currently well known to those skilled in the art and need not be illustrated one by one. Therefore, the embodiments listed in the present invention are merely examples for illustrating the inventive concept, and are not a limitation on the present invention. Any equivalent transformation or replacement according to the technical essence of the present invention still belongs to the scope of the inventive concept.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

L'invention concerne un moteur à courant alternatif à démarreur intégré dont l'élément de démarrage est un condensateur ou un ensemble de condensateur venant entre une alimentation et le moteur. Lors du démarrage par étape, la réactance capacitive est réduite par étape. Lors du fonctionnement normal du moteur, le condensateur peut servir d'élément de compensation du facteur de puissance. Lors d'une panne provoquée par le bourrage du moteur, l'effet permettant le limiter le courant faible consommation empêche que la bobine du moteur ne brûle. Ce démarreur a une faible consommation, est facile à fabriquer, peu coûteux, répond aux besoins de compensation du réseau électrique et efficace.
PCT/CN1999/000182 1999-11-05 1999-11-05 Moteur a courant alternatif a demarreur integre WO2001035516A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN1999/000182 WO2001035516A1 (fr) 1999-11-05 1999-11-05 Moteur a courant alternatif a demarreur integre
AU10268/00A AU1026800A (en) 1999-11-05 1999-11-05 An alternating motor with starter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN1999/000182 WO2001035516A1 (fr) 1999-11-05 1999-11-05 Moteur a courant alternatif a demarreur integre

Publications (1)

Publication Number Publication Date
WO2001035516A1 true WO2001035516A1 (fr) 2001-05-17

Family

ID=4575150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1999/000182 WO2001035516A1 (fr) 1999-11-05 1999-11-05 Moteur a courant alternatif a demarreur integre

Country Status (2)

Country Link
AU (1) AU1026800A (fr)
WO (1) WO2001035516A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013134161A1 (fr) * 2012-03-03 2013-09-12 Sturm Harry N Montage électrique permettant de réaliser des économies d'énergie et d'argent

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297627A (en) * 1978-04-17 1981-10-27 Franklin Electric Co., Inc. Electric motor construction
JPS5728579A (en) * 1980-07-28 1982-02-16 Hitachi Ltd Starting device of squirrel-cage induction motor
CN2068731U (zh) * 1989-08-19 1991-01-02 天津市微特电机技术开发实验厂 小型木工刨专用的双值电容单相异步电动机
US5300571A (en) * 1988-09-28 1994-04-05 Basf Lacke+Farben Aktiengesellschaft Hardenable composition based on a Michael addition product, process for its preparation and its use
CN2315709Y (zh) * 1997-12-29 1999-04-21 曲阜市电机厂 双电压单相电容起动电动机
CN2362231Y (zh) * 1998-11-26 2000-02-02 广东省经济特区实业有限公司 带有新型起动器的电机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297627A (en) * 1978-04-17 1981-10-27 Franklin Electric Co., Inc. Electric motor construction
JPS5728579A (en) * 1980-07-28 1982-02-16 Hitachi Ltd Starting device of squirrel-cage induction motor
US5300571A (en) * 1988-09-28 1994-04-05 Basf Lacke+Farben Aktiengesellschaft Hardenable composition based on a Michael addition product, process for its preparation and its use
CN2068731U (zh) * 1989-08-19 1991-01-02 天津市微特电机技术开发实验厂 小型木工刨专用的双值电容单相异步电动机
CN2315709Y (zh) * 1997-12-29 1999-04-21 曲阜市电机厂 双电压单相电容起动电动机
CN2362231Y (zh) * 1998-11-26 2000-02-02 广东省经济特区实业有限公司 带有新型起动器的电机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013134161A1 (fr) * 2012-03-03 2013-09-12 Sturm Harry N Montage électrique permettant de réaliser des économies d'énergie et d'argent

Also Published As

Publication number Publication date
AU1026800A (en) 2001-06-06

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