WO2009054640A2 - Compresseur alternatif - Google Patents

Compresseur alternatif Download PDF

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Publication number
WO2009054640A2
WO2009054640A2 PCT/KR2008/006019 KR2008006019W WO2009054640A2 WO 2009054640 A2 WO2009054640 A2 WO 2009054640A2 KR 2008006019 W KR2008006019 W KR 2008006019W WO 2009054640 A2 WO2009054640 A2 WO 2009054640A2
Authority
WO
WIPO (PCT)
Prior art keywords
section
reciprocating compressor
piston
cylinder
power
Prior art date
Application number
PCT/KR2008/006019
Other languages
English (en)
Other versions
WO2009054640A3 (fr
Inventor
Yang-Jun Kang
Young-Hoan Jeon
Original Assignee
Lg Electronics, Inc.
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 Lg Electronics, Inc. filed Critical Lg Electronics, Inc.
Priority to CN2008801132797A priority Critical patent/CN101836354B/zh
Publication of WO2009054640A2 publication Critical patent/WO2009054640A2/fr
Publication of WO2009054640A3 publication Critical patent/WO2009054640A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/10—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures

Definitions

  • the present invention relates to a reciprocating compressor in which a piston is linearly reciprocated inside a cylinder, for sucking a refrigerant into a compression space, and compressing and discharging the refrigerant, and more particularly, to a reciprocating compressor which includes a power supply apparatus whose circuit unit is simplified due to a reduction in the number of inverter switches.
  • a compressor is a mechanical apparatus for compressing the air, refrigerant or other various operation gases and raising a pressure thereof, by receiving power from a power generation apparatus such as an electric motor or turbine.
  • the compressor has been widely used for an electric home appliance such as a refrigerator and an air conditioner, or in the whole industry.
  • the compressors are roughly classified into a reciprocating compressor in which a compression space for sucking or discharging an operation gas is formed between a piston and a cylinder, and the piston is linearly reciprocated inside the cylinder, for compressing a refrigerant, a rotary compressor in which a compression space for sucking or discharging an operation gas is formed between an eccentrically -rotated roller and a cylinder, and the roller is eccentrically rotated along the inner wall of the cylinder, for compressing a refrigerant, and a scroll compressor in which a compression space for sucking or discharging an operation gas is formed between an orbiting scroll and a fixed scroll, and the orbiting scroll is rotated along the fixed scroll, for compressing a refrigerant.
  • Fig. 1 is a view illustrating a conventional power supply apparatus applied to a reciprocating compressor.
  • a DC power supply unit 22 for rectifying an AC power (not shown) for home use or industrial use and converting it into a DC
  • a separate control unit (not shown) controls inverter switches S 1 to S4 in a pulse width modulation (PWM) fashion to supply an AC power Vm to a linear motor.
  • PWM pulse width modulation
  • the DC power supply unit 22 includes a rectifier section for rectifying an AC power and a DC link section, the illustration and explanation thereof are omitted because they are generally known.
  • the DC power controlled through the rectifier section (not shown) and the DC link section (not shown) is converted into an AC power Vm having an appropriate amplitude and frequency through the inverter switches Sl to S4, and the AC power Vm is applied to the linear motor (more precisely, a coil of the motor).
  • a reciprocating compressor which comprises a piston, a cylinder, a coil section provided in the cylinder and linearly reciprocating the piston, and a power supply apparatus for supplying power to the coil section, comprises: a rectifier section for rectifying an AC voltage supplied from an AC power supply unit; a DC link section for stabilizing the amplitude of the rectified voltage; and an inverter switch unit consisting of a pair of inverter switches connected to the DC link section, for applying the stabilized voltage to the coil section, both ends of the coil section being connected between the DC link section and the pair of inverter switches to allow the coil section to directly receive power from the DC link section, thus reducing the numnber of inverter switches.
  • the rectifier section consists of full-bridge diodes.
  • the DC link section consists of a first capacitor and a second capacitor connected in series, both ends of the inverter switch unit are connected to both ends of the DC link section, and a connecting point of the first capacitor and the second capacitor is grounded.
  • the grounding portion of the AC power supply unit is connected to a connecting point of the first capacitor and the second capacitor.
  • the pair of inverter switches is alternately turned on/off.
  • the present invention can supply a desired AC power to a linear motor to drive the reciprocating compressor even if the number of required inverter switches is reduced. [16] Furthermore, the present invention makes it easy to control the inverter switch unit and simplifies the circuit configuration. [17] Furthermore, the present invention can simplify the circuit configuration and apply the maximum power to the linear motor by constructing an AC power supply path to the linear motor by a DC link section and inverter switches.
  • FIG. 1 is a view illustrating a conventional power supply apparatus applied to a reciprocating compressor
  • FIG. 2 is a cross sectional view of a reciprocating compressor to which a power supply apparatus is applied according to the present invention.
  • FIGs. 3 and 4 are views illustrating first and second embodiments of a power supply apparatus applied to the reciprocating compressor according to the present invention.
  • FIG. 2 is a cross sectional view of a reciprocating compressor to which a power supply apparatus is applied according to the present invention.
  • an inlet tube 2a and an outlet tube 2b through which refrigerants are sucked and discharged are installed at one side of a closed vessel 2
  • a cylinder 4 is fixedly installed inside the closed vessel 2
  • a piston 6 is installed inside the cylinder 4 to be linearly reciprocated to compress the refrigerants sucked into a compression space P in the cylinder 4, and various springs are installed to be elastically supported in the motion direction of the piston 6.
  • the piston 6 is connected to a reciprocating motor 10 for generating a linear reciprocation driving force.
  • a suction valve 22 is installed at one end of the piston 6 contacting the compression space P
  • a discharge valve assembly 24 is installed at one end of the cylinder 4 contacting the compression space P.
  • the suction valve 22 and the discharge valve assembly 24 are automatically controlled to be opened or closed according to the inside pressure of the compression space P, respectively.
  • the top and bottom shells of the closed vessel 2 are coupled to hermetically seal the closed vessel 2.
  • the inlet tube 2a through which the refrigerants are sucked and the outlet tube 2b through which the refrigerants are discharged are installed at one side of the closed vessel 2.
  • the piston 6 is installed inside the cylinder 4 to be elastically supported in the motion direction to perform the linear reciprocation.
  • the reciprocating motor 10 is connected to a frame 18 outside the cylinder 4.
  • the cylinder 4, the piston 6 and the linear motor 10 compose an assembly.
  • the assembly is installed on the inside bottom surface of the closed vessel 2 to be elastically supported by a support spring 29.
  • the inside bottom surface of the closed vessel 2 contains oil, an oil supply device 30 for pumping the oil is installed at the lower end of the assembly, and an oil supply tube 18a for supplying the oil between the piston 6 and the cylinder 4 is formed inside the frame 18 at the lower side of the assembly. Accordingly, the oil supply device 30 is operated by vibrations generated by the linear reciprocation of the piston 6, for pumping the oil, and the oil is supplied to the gap between the piston 6 and the cylinder 4 along the oil supply tube 18a, for cooling and lubrication.
  • the cylinder 4 is formed in a hollow shape so that the piston 6 can perform the linear reciprocation, and has the compression space P at its one side.
  • the cylinder 4 is installed on the same straight line with the inlet tube 2a in a state where one end of the cylinder 4 is adjacent to the inside portion of the inlet tube 2a.
  • the piston 6 is installed inside one end of the cylinder 4 adjacent to the inlet tube 2a to perform linear reciprocation, and the discharge valve assembly 24 is installed at one end of the cylinder 4 in the opposite direction to the inlet tube 2a.
  • the discharge valve assembly 24 includes a discharge cover 24a for forming a predetermined discharge space at one end of the cylinder 4, a discharge valve 24b for opening or closing one end of the cylinder 4 near the compression space P, and a valve spring 24c which is a kind of coil spring for applying an elastic force between the discharge cover 24a and the discharge valve 24b in the axial direction.
  • An O-ring R is inserted onto the inside circumferential surface of one end of the cylinder 4, so that the discharge valve 24a can be closely adhered to one end of the cylinder 4.
  • An indented loop pipe 28 is installed between one side of the discharge cover 24a and the outlet tube 2b, for guiding the compressed refrigerants to be externally discharged, and preventing vibrations generated by interactions of the cylinder 4, the piston 6 and the reciprocating motor 10 from being applied to the whole closed vessel 2.
  • the reciprocating motor 10 is directly connected to one end of the piston 6 adjacent to the inlet tube 2a by a connection member 17, and the suction valve 22 is installed at one end of the piston 6 in the opposite direction to the inlet tube 2a.
  • the piston 6 is elastically supported in the motion direction.
  • the suction valve 22 is formed in a thin plate shape. The center of the suction valve
  • the piston 6 is installed to be elastically supported in the motion direction.
  • a piston flange 6b protruded in the radial direction from one end of the piston 6 adjacent to the inlet tube 2a is elastically supported in the motion direction of the piston 6 by mechanical springs 8a and 8b such as coil springs.
  • the refrigerants included in the compression space P in the opposite direction to the inlet tube 2a are operated as gas spring due to an elastic force, thereby elastically supporting the piston 6.
  • the mechanical springs 8a and 8b have constant mechanical spring constants K m regardless of the load, and are preferably installed side by side with a support frame 26 fixed to the reciprocating motor 10 and the cylinder 4 in the axial direction from the piston flange 6b. Also, preferably, the mechanical spring 8a supported by the support frame 26 and the mechanical spring 8a installed on the cylinder 4 have the same mechanical spring constant K m .
  • the driving means 10 comprises coil sections 12 and 14 and a magnet 16.
  • the magnet receives a force resulting from the magnetic field, and such a force results in a motive force for moving the piston 6.
  • the reciprocating motor 10 includes an inner stator 12 formed by stacking a plurality of laminations 12a in the circumferential direction, and fixedly installed outside the cylinder 4 by the frame 18, an outer stator 14 formed by stacking a plurality of laminations 14b at the periphery of a coil wound body 14a in the circumferential direction, and installed outside the cylinder 4 by the frame 18 with a predetermined gap from the inner stator 12, and a permanent magnet 16 positioned at the gap between the inner stator 12 and the outer stator 14, and connected to the piston 6 by the connection member 17.
  • the coil wound body 14a can be fixedly installed outside the inner stator 12.
  • FIGs. 3 and 4 are views illustrating first and second embodiments of a power supply apparatus applied to the reciprocating compressor according to the present invention.
  • the power supply unit comprises a rectifier section 202 for rectifying an AC power supplied from an AC power supply unit 201, a DC link section 203 for stabilizing the rectified power, and an inverter switch unit 204 for controlling power applied to the coil section 205.
  • the AC power is typically supplied from the outside through the AC power supply unit 201, such as power wires, cables, etc.
  • the rectifier section 202 functions to rectify an AC power so as to make it flow only in one direction
  • the DC link section 203 functions to reduce a variation in the amplitude of a rectified power (functions to stabilize). Since the purpose of the rectifier section 202 and DC link section 203 is to convert an AC power into a stable DC power, the two sections can be combined into a power conversion unit.
  • the inverter switch unit 204 controls an applied power through switches.
  • the controlled power is converted into an AC power having an appropriate amplitude and frequency through the inverter switch unit 204, and the AC power is applied to the coil section 205 (corresponding to the coil wound body 14a of Fig. 2).
  • FIG. 3 is a view illustrating a first embodiment of a power supply unit applied to the reciprocating compressor according to the present invention.
  • the rectifier section 202 functions to rectify an AC power, and, in Fig. 3, is composed by connecting four diodes in a full-bridge configuration, the configuration of the rectifier section is a well-known art, and therefore, anything that functions to rectify an AC power so as to make it flow in only one direction is available.
  • the DC link section 203 functions to reduce the width of variation of the rectified voltage for stabilization. As shown in Fig. 3, if rectification is implemented by connecting diodes in a full-bridge configuration, even though power is applied in only one direction but the amplitude thereof is part of a sine wave, thereby resulting in serious variations (e.g., ripples). In order to reduce such variations, the DC link section 203 is provided to stabilize power. Concretely, in Fig. 6, for instance, the DC link section 203 is comprised of a first capacitor Cl and a second capacitor C2. The first capacitor Cl and the second capacitor C2 are serially connected to each other, and their connecting point is separately grounded to a grounding portion of the AC power supply section 201.
  • the both end voltage V/2 of the first capacitor Cl and second capacitor C2 is not affected much even if a voltage with a wide variation is applied from the rectifier section 202. If the absolute value of a voltage of the first or second capacitor Cl or C2 is smaller than the absolute value of the power passed through the rectifier section 202, the diodes of the rectifier section 202 are closed, and the voltage of the DC link section 203 is applied to the inverter switch unit 204.
  • the diodes of the rectifier section 202 are closed, and the voltage of the DC link section 203 is affected by the power passed through the rectifier section 202 and thus the voltage passed through the rectifier section 202 is applied to the inverter switch unit 204. By this process, the width of variation of the voltage can be reduced.
  • the inverter switch unit 204 consists of a first switch (or first inverter switch) Sl and a second switch (or second inverter switch) S2 which are for applying power to the coil section 205. Both ends of the inverter switch unit 204 are connected to both ends of the DC link section 203. That is, one ends of the first switch Sl and second switch S2 are connected to the respective capacitors Cl and C2 of the DC link section 203, and the other ends thereof are connected to the coil section 205.
  • the coil section 205 is connected between the connecting point of the first capacitor Cl and second capacitor C2 and the connecting point of the first switch S 1 and second switch S2.
  • the power controlled through the first switch Sl and second switch S2 is converted into an AC power having an appropriate amplitude and frequency, and the AC power is applied to the coil section 205.
  • the coil section 205 of Fig. 3 is a brief illustration of the coil section 14a.
  • a control unit (not shown) of the reciprocating compressor alternately turns on/off the first switch Sl and the second switch S2 to thus apply power from the DC link section 203 to the coil section 205, whereby a suction stroke, compression stroke, discharge stroke, and re- expansion stroke of the reciprocating compressor are sequentially implemented.
  • FIG. 4 is a view illustrating a second embodiment of a power supply unit applied to the reciprocating compressor of the present invention.
  • a second node 102 connected to an AC power source 201 is connected to a grounding portion of the DC link section 203, i.e., a connecting point of the first capacitor Cl and second capacitor C2. Therefore, the grounding portion of the DC link section 203 and the grounding portion of the AC power 201 are connected, and a voltage of the second node 102 is always zero. Except this, the configuration of the rectifier section is the same as that of the previous embodiment. Accordingly, the both end voltage of the first capacitor Cl and second capacitor C2 of the DC link section 203 rises to V, and the voltage V is applied to the coil section 205.
  • the first and second switches Sl and S2 are alternately turned on/off, thereby sequentially implementing a suction stroke, compression stroke, discharge stroke, and re-expansion stroke of the reciprocating compressor.
  • a voltage of the first node 101 is higher than that of the third node 103, power flows toward the third node to make the voltage of the third node equal to a voltage of the AC power source 201. If a voltage of the first node 101 is lower than that of the fourth node 104, power flows from the fourth node 104 to make the voltage of the fourth node 104 equal to the voltage of the AC power source 201. If the voltage of the first node 101 is between the voltage of the third node 103 and the voltage of the fourth node, all the diodes are closed. If the capacitance of the capacitors constituting the DC link section 203 is large, the voltage of the DC link section 203 does not almost change.
  • the width of variation of the voltage applied to the inverter switch unit 204 through the DC link section 203 is decreased.
  • a stabilized DC power is converted into an AC power Vm having an appropriate amplitude and frequency through the inverter switch unit 204, and the AC power Vm is applied to the coil section 205.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Compressor (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

La présente invention concerne un compresseur alternatif dans lequel un piston est déplacé selon un mouvement alternatif linéaire à l'intérieur d'un cylindre, pour aspirer un fluide frigorigène dans un espace de compression, comprimer et évacuer le fluide frigorigène; et plus particulièrement, un compresseur alternatif qui comprend un appareil d'alimentation dont l'unité de circuit est simplifiée en raison d'une réduction du nombre de commutateurs inverseurs. L'invention concerne un compresseur alternatif qui comprend un piston, un cylindre, une section de bobine disposée dans le cylindre et déplaçant le piston selon un mouvement alternatif linéaire, et un appareil d'alimentation pour fournir du courant à la section de bobine qui comprend une section de redressement pour redresser une tension CA fournie par une unité d'alimentation CA; une section de liaison CC pour stabiliser l'amplitude de la tension redressée; et une unité commutateur inverseur constituée d'une paire de commutateurs inverseurs connectés à la section de liaison CC, pour appliquer la tension stabilisée à la section de bobine, les deux extrémités de la section de bobine étant raccordées entre la section de liaison CC et la paire de commutateurs inverseurs pour permettre à la section de bobine de recevoir du courant à partir de la section de liaison CC, ce qui permet de réduire le nombre de commutateurs inverseurs.
PCT/KR2008/006019 2007-10-26 2008-10-13 Compresseur alternatif WO2009054640A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008801132797A CN101836354B (zh) 2007-10-26 2008-10-13 往复式压缩机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0108398 2007-10-26
KR1020070108398A KR101316194B1 (ko) 2007-10-26 2007-10-26 왕복동식 압축기

Publications (2)

Publication Number Publication Date
WO2009054640A2 true WO2009054640A2 (fr) 2009-04-30
WO2009054640A3 WO2009054640A3 (fr) 2010-06-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/006019 WO2009054640A2 (fr) 2007-10-26 2008-10-13 Compresseur alternatif

Country Status (3)

Country Link
KR (1) KR101316194B1 (fr)
CN (1) CN101836354B (fr)
WO (1) WO2009054640A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101915967B1 (ko) * 2013-02-14 2018-11-07 한온시스템 주식회사 연료전지 차량용 공기 블로워
CN103532333A (zh) * 2013-09-22 2014-01-22 西安交通大学 一种往复电机
KR102253892B1 (ko) * 2014-10-31 2021-05-20 엘지전자 주식회사 압축기 제어 장치 및 제어 방법
CN106330051A (zh) * 2015-06-19 2017-01-11 珠海格力电器股份有限公司 一种直线电机控制电路及直线电机
US11434883B2 (en) * 2020-11-19 2022-09-06 Haier Us Appliance Solutions, Inc. Variable capacity drive circuit for a linear compressor in a refrigeration appliance

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4706180A (en) * 1985-11-29 1987-11-10 York International Corporation Pulse width modulated inverter system for driving single phase a-c induction motor
EP0585077A1 (fr) * 1992-08-25 1994-03-02 General Electric Company Alimentation d'énergie avec correction du facteur de puissance
US6268758B1 (en) * 1999-04-16 2001-07-31 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Circuit arrangement with half-bridge
CN101005243A (zh) * 2006-05-01 2007-07-25 燕山大学 柔性桥臂拓扑电路

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US4783729A (en) * 1987-09-25 1988-11-08 Zenith Electronics Corporation Automatic voltage doubler switch
JPH10189275A (ja) * 1996-12-27 1998-07-21 Toshiba Lighting & Technol Corp 電源装置、放電灯点灯装置および照明装置
JP2002034286A (ja) 2000-07-17 2002-01-31 Nec Corp Ｈブリッジ型モータ駆動回路
KR100641112B1 (ko) * 2004-07-28 2006-11-02 엘지전자 주식회사 왕복동식 압축기 및 그의 제조 방법
KR100576032B1 (ko) * 2004-10-01 2006-05-02 엘지전자 주식회사 리니어 압축기의 제어장치 및 제어방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706180A (en) * 1985-11-29 1987-11-10 York International Corporation Pulse width modulated inverter system for driving single phase a-c induction motor
EP0585077A1 (fr) * 1992-08-25 1994-03-02 General Electric Company Alimentation d'énergie avec correction du facteur de puissance
US6268758B1 (en) * 1999-04-16 2001-07-31 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Circuit arrangement with half-bridge
CN101005243A (zh) * 2006-05-01 2007-07-25 燕山大学 柔性桥臂拓扑电路

Also Published As

Publication number Publication date
CN101836354A (zh) 2010-09-15
WO2009054640A3 (fr) 2010-06-03
CN101836354B (zh) 2013-09-25
KR20090042563A (ko) 2009-04-30
KR101316194B1 (ko) 2013-10-08

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