Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
  • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M1/00—Details of apparatus for conversion
  • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • H02M1/4208—Arrangements for improving power factor of AC input
  • H02M1/4266—Arrangements for improving power factor of AC input using passive elements
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
  • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
  • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
  • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
  • H02M7/062—Avoiding or suppressing excessive transient voltages or currents
• • 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
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
  • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
• • 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
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P80/00—Climate change mitigation technologies for sector-wide applications
  • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

• Rectifier circuit adapted for power factor correction
• the present invention relates to a rectifier circuit adapted for power factor correction, comprising a first, a second, a third and a fourth diode in a bridge arrangement, an inductance and a capacitance, a first and a second pole of the bridge arrangement being connected to a source, which has at least one AC voltage component, and the inductance is arranged in series with the third or fourth pole.
• the bridge arrangement comprises a first pole 10, a second pole 12, a third pole 14 and a fourth pole 16, the poles 10 and 12 being connected to a source which has at least one AC voltage component.
• the poles 14 and 16 are connected to one another via a capacitance C1, the capacitance C1 preferably being small, in particular in the range of a few dozen nF.
• the pole 16 is connected to ground, while at the pole 14 there is first a diode D5, followed by an inductor L1.
• the arrow 18 points in the direction of the further circuit, with a larger storage capacity following in the direction of the arrow, which then supplies the operating device with DC voltage. It is particularly advantageous, as shown here, to connect the line rectifier to an inductor in order to load it appropriately.
• the PFC circuit there is also (not shown) at least one high-frequency switching element which controls the mains current in such a way that it becomes as proportional as possible to the voltage, that is to say sinusoidal in most cases.
• Block 20 summarizes the elements that are part of the PFC circuit.
• Fig. Lb shows a slightly modified variant in which the fast diode D5 is connected between the pole 16 and ground, while the inductor is connected directly to the pole 14.
• the pole 16 is connected to ground via the inductance L1
• the fast diode D5 is arranged at the pole 14.
• the series connection of fast diode D5 and L1 is arranged between pole 16 and ground.
• the present invention is based on the object of developing a generic rectifier circuit in such a way that it can be implemented with fewer components, in particular that diode D5 can be dispensed with.
• the invention is based on the idea that the diode D5 can be replaced by the fact that two of the four diodes of the rectifier are designed as fast diodes, the capacitance C1 then having to be switched between the first and the second pole. With this measure, the fifth diode can be omitted. Another advantage results from the fact that the capacitance also acts as an x-capacitor for radio interference suppression.
• the capacitance C1 is formed by the series connection of a first and a second partial capacitance. det, the connection point of the first and the second partial capacitance being connected to the third or the fourth pole of the bridge arrangement.
• This measure has the advantage that the individual potentials can be defined even more reliably in relation to RF voltage.
• the connection point between the two partial capacitances is preferably connected to the pole which is common to the two slow diodes.
• the first diode is connected between the first and third poles, the second diode between the first and fourth poles, the third diode between the fourth and second poles, and the fourth diode between the second and third poles.
• the first embodiment is characterized in that the first and fourth diodes are designed as fast diodes, the inductance is arranged in series with the third pole and the fourth pole is connected to ground.
• the second and third diodes are designed as fast diodes, the inductance is arranged in series with the third pole and the fourth pole is connected to ground.
• the first and fourth diodes are designed as fast diodes, the inductance is arranged in series with the fourth pole and the fourth pole is connected to ground via the inductance.
• the second and third diodes are designed as fast diodes, the inductance is arranged in series with the fourth pole and the fourth pole is connected to ground.
• the diodes which are not explicitly designed as fast diodes, can be designed as slow diodes.
• Fast diode means that the duration of the switch-off reverse current is 10 ns to 100 s.
• FIGS. 2a to 3d The embodiments according to the invention are shown by way of example in FIGS. 2a to 3d.
• the embodiments according to FIGS. 2a and 3a go back to FIG. 1a, the embodiments according to FIGS. 2b and 3b to FIG. 1b, the embodiments according to 2c and 3c to FIG. 1c and the embodiments according to 2d and 3d to FIG , Components in Figures 2a to 2d and Figures 3a to 3d, the components of Figures la to ld correspond, have the same reference numerals and are therefore not explained again.
• FIG. 2a to 2d differ from the embodiments of Figures la to ld in that the two diodes, which are combined in block 22 with the inductor L1 as components of the PFC circuit, are implemented as fast diodes, and the Capacitor C1 is now arranged between the first pole 10 and the second pole 12.
• FIG. 3a to 3b differ from the embodiments of Figures 2a to 2d in that the capacitance C1 is realized by two partial capacitances C2 and C3, the connection point of the partial capacitances C2 and C3 being connected to the pole which the have two diodes in common, which do not have to be designed as fast diodes, ie the diodes which are not arranged in block 22.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Rectifiers (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=7654000

Family Applications (1)

Country Status (9)

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• 2000
  • 2000-08-28 DE DE10042141A patent/DE10042141A1/de not_active Withdrawn
• 2001
  • 2001-07-19 TW TW090117660A patent/TWI239709B/zh not_active IP Right Cessation
  • 2001-08-10 WO PCT/DE2001/003076 patent/WO2002019505A1/de not_active Application Discontinuation
  • 2001-08-10 CA CA002389409A patent/CA2389409C/en not_active Expired - Fee Related
  • 2001-08-10 AU AU81728/01A patent/AU776346B2/en not_active Ceased
  • 2001-08-10 KR KR1020027005198A patent/KR100830244B1/ko not_active IP Right Cessation
  • 2001-08-10 US US10/070,887 patent/US6778373B2/en not_active Expired - Fee Related
  • 2001-08-10 EP EP01960171A patent/EP1314237A1/de not_active Withdrawn
  • 2001-08-10 CN CNB018025994A patent/CN1258862C/zh not_active Expired - Fee Related

Non-Patent Citations (2)

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