WO2010143239A1 - Direct-current power supply device and led lighting device - Google Patents

Direct-current power supply device and led lighting device Download PDF

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Publication number
WO2010143239A1
WO2010143239A1 PCT/JP2009/005117 JP2009005117W WO2010143239A1 WO 2010143239 A1 WO2010143239 A1 WO 2010143239A1 JP 2009005117 W JP2009005117 W JP 2009005117W WO 2010143239 A1 WO2010143239 A1 WO 2010143239A1
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WO
WIPO (PCT)
Prior art keywords
power supply
circuit
rectifier circuit
supply device
rectifier
Prior art date
Application number
PCT/JP2009/005117
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French (fr)
Japanese (ja)
Inventor
国華 王
Original Assignee
ニッタ株式会社
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Publication date
Priority claimed from JP2009138380A external-priority patent/JP2010287340A/en
Priority claimed from JP2009138371A external-priority patent/JP2010288329A/en
Application filed by ニッタ株式会社 filed Critical ニッタ株式会社
Publication of WO2010143239A1 publication Critical patent/WO2010143239A1/en

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    • 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
    • H02M7/08—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 arranged for operation in parallel
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • 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

Definitions

  • the present invention relates to a DC power supply for supplying DC power and an LED lighting device for lighting an LED (light emitting diode).
  • a DC power supply device that obtains a DC power supply using a commercial AC power supply rectifies the transformer (which may be transformerless) that steps down the voltage of the commercial AC power supply and rectifies the power source converted by this transformer.
  • a DC power supply device in order to suppress voltage fluctuation (ripple) at an AC frequency (50 Hz, 60 Hz, etc.), it is necessary to install a large capacity electrolytic capacitor in the smoothing circuit.
  • the electrolytic capacitor is weak against heat and overvoltage, and when used for a long time, the equivalent series resistance (ESR) increases and the function of smoothing the pulsating flow becomes weak.
  • ESR equivalent series resistance
  • the flickering of the light emission becomes remarkable and it becomes difficult to use as a light source. Therefore, there is a demand for the development of a DC power supply apparatus that does not use an electrolytic capacitor and that can ignore periodic voltage fluctuations (ripples).
  • an object of the present invention is to provide a DC power supply device and an LED lighting device that can reduce periodic voltage fluctuations (ripples) and have a small size and a long life.
  • the DC power supply device of the present invention is connected to a commercial AC power supply E, and generates a range from a first AC power supply to an nth (n is an integer of 2 or more) AC power supply having a phase difference from each other A phase shift circuit, a first rectifier circuit R0 that rectifies the first AC power supply to obtain a pulsating current, a second rectifier circuit R1 that rectifies the second AC power supply to obtain a pulsating current,... And an n-th rectifier circuit Rn-1 that rectifies the n-th AC power source to obtain a pulsating flow.
  • phase difference means a phase difference when one cycle of the commercial AC power source E is set to 360 degrees.
  • Pulsating flow means an output waveform of the rectifier circuit that is not smoothed by the smoothing circuit.
  • the symbol “...” Means that 1 to n are repeated.
  • the output line of the nth rectifier circuit Rn-1 are connected in series or in parallel to both terminals of the load. It is connected.
  • ZL indicates a load.
  • FIGS. 1 and 2 An example of the configuration of this apparatus is shown in FIGS. According to FIGS. 1 and 2, the phase shift circuit is inserted between the commercial AC power source E and the second to nth rectifier circuits R1 to Rn-1.
  • FIG. 1 shows a state in which output lines of first to nth rectifier circuits R0 to Rn-1 are connected in parallel to drive a load
  • FIG. 2 shows output lines of first to nth rectifier circuits R0 to Rn-1. Shows a state in which a load is driven by connecting them in series. With this configuration, pulsating currents out of phase with each other are output from the first to nth rectifier circuits R0 to Rn-1 for driving the load.
  • Each pulsating flow is connected in series or connected in parallel and supplied to both terminals of the load. Since the phase difference is set in the output waveform of the other rectifier circuit with respect to the output waveform of one of the rectifier circuits, the combined waveform has overlapping peaks and troughs of the pulsating current, and as a result It contains many frequency components higher than the fundamental frequency of the pulsating current (for example, if the commercial AC power supply E is 60 Hz, the fundamental frequency is 120 Hz). For this reason, voltage fluctuation and current fluctuation applied to the load are prevented.
  • both the first (hot side L) and second (cold side N) power lines of the commercial AC power source E and at least (n ⁇ 1) rectifier circuits A capacitor element may be inserted between each of the input lines.
  • the total number of capacitor elements is 2 (n ⁇ 1).
  • the outputs connected in series or in parallel from the first rectifier circuit R0,..., The nth rectifier circuit Rn-1 are symmetrical with respect to the hot side L and the cold side N of the commercial AC power source E, that is, with the hot side L. Even if the cold side N is replaced, the same configuration is obtained. Therefore, it is possible to reduce the influence of input voltage fluctuation and load fluctuation.
  • At least one of the power line on the hot side L or the cold side N of the commercial AC power source E and the first to nth rectifier circuits R0 to Rn ⁇ 1 (at least ( n-1)
  • a capacitor element inserted between one of the rectifier circuits and one input line may be used.
  • the total number of capacitor elements is (n ⁇ 1).
  • Outputs connected in series or in parallel from (n-1) rectifier circuits are not symmetric with respect to the commercial AC power supply E, but the effect of suppressing the ripple applied to the load can be sufficiently obtained. it can.
  • the DC power supply device of the present invention it is preferable that the first converter circuit for converting the output of the first rectifier circuit R0 is inserted into the output line of the first rectifier circuit R0.
  • 3 and 4 show a configuration example in which the converter circuit I0 is used between the output line of the first rectifier circuit R0 and the load. By adjusting the voltage of the converter circuit I0, the voltage or current applied to the load can be set to a desired value.
  • a second converter circuit I1 for converting the output of the second rectifier circuit R1 is inserted into the output line of the second rectifier circuit R1,.
  • the configuration may be such that the nth converter circuit In-1 for converting the output of the nth rectifier circuit Rn-1 is inserted into the output line of the n rectifier circuit Rn-1. Examples of this circuit configuration are shown in FIGS. With this circuit, the voltage or current applied to the load can be set to a desired value by adjusting the converter circuits I0 to In-1.
  • the ripple applied to the load can be suppressed.
  • the electrolytic capacitor which is said to have a short life, is not necessary, and the device can have a long life and can be downsized.
  • the flickering of the lighted LED can be suppressed to such an extent that it cannot be seen with the eyes.
  • FIG. 2 is a circuit diagram illustrating a configuration example of a DC power supply device of the present invention configured by adding one converter circuit to the circuit of FIG. 1.
  • FIG. 5 is a circuit diagram showing a modification of the DC power supply device of the present invention, which is configured by adding one converter circuit to the circuit of FIG. 2.
  • FIG. 2 is a circuit diagram showing a configuration example of a DC power supply device of the present invention configured by adding a plurality of converter circuits to the circuit of FIG. 1.
  • FIG. 3 is a circuit diagram showing a configuration example of a DC power supply device according to the present invention in which a plurality of converter circuits are added to the circuit of FIG. 2. It is a circuit diagram which shows the circuit structure of 10A (parallel connection) of DC power supply devices which concern on embodiment of this invention. It is a circuit diagram which shows the circuit structure of 10A (series connection) DC power supply device which concerns on embodiment of this invention.
  • FIG. 4 is a voltage waveform diagram at points a and b and a current waveform diagram at point c of the DC power supply device 10A.
  • the DC power supply device 10A is a device that drives a load.
  • the load is not particularly limited. Examples thereof include LEDs (light emitting diodes), discharge tubes such as cold cathode tubes, electronic devices such as personal computers, and electrical devices.
  • LEDs light emitting diodes
  • discharge tubes such as cold cathode tubes
  • electronic devices such as personal computers, and electrical devices.
  • electrical devices a case where an LED is used as a load will be described.
  • the DC power supply device 10A is connected to a commercial AC power supply E.
  • a phase shift circuit for generating an AC power supply having a phase difference ⁇ exceeding 0 degrees relative to each other (the AC cycle of the AC power supply is 360 degrees)
  • a hot side L and a cold side N of a commercial AC power supply E are used.
  • Capacitor elements C1 and C2 inserted between the power supply line and both input lines of the second rectifier circuit R1, respectively. With this capacitor element, it is possible to obtain a phase difference close to 90 degrees with respect to the power source input to the first rectifier circuit R0.
  • the DC power supply device 10A is connected to a commercial AC power supply E, and is connected to the first rectifier circuit R0 that rectifies the AC power supply to obtain a pulsating current through the capacitor elements C1 and C2, thereby obtaining the pulsating current. And a second rectifier circuit R1.
  • a DC / DC converter circuit for converting the output of the first rectifier circuit R0 is inserted into the output line of the first rectifier circuit R0.
  • This converter circuit is inserted in series with the output line of the first rectifier circuit R0, and the current maintaining diode that connects the switching elements SW1 and SW2 for switching the pulsating current output at a high frequency and the output lines of the switching elements.
  • D and current maintaining choke coils CH1 and CH2 inserted in series in the output lines of the switching elements SW1 and SW2, respectively.
  • In-phase pulse voltages are respectively supplied to the gates of the two switching elements SW1 and SW2. That is, when the gate of one switching element SW1 is turned on (off) by the pulse voltage, the gates of the other switching elements SW2 are also turned on (off).
  • the switching frequency that is, the frequency of the gate pulse voltage is not limited, but is set to about 10 2 to 10 4 times the frequency of the commercial AC power supply E.
  • the choke coils CH1 and CH2 are for absorbing the high frequency component of the switched high frequency current and maintaining the current applied to the load.
  • the voltage stepped down by the DC / DC converter circuit is applied to the load LED.
  • the difference between the stepped down voltage and the voltage of the commercial AC power supply E is applied to both ends of the capacitor element C1 and both ends of the capacitor element C2.
  • FIG. 9 (a) and 9 (b) are voltage waveform diagrams at points a and b of the DC power supply device 10A in FIG. 7, and FIG. 9 (c) is a current waveform diagram at point c.
  • FIG. 5A shows the voltage at the output point a of the first rectifier circuit R0, which is the pulsating output itself.
  • FIG. 2B shows the voltage at the output point b of the switching elements SW1 and SW2, which has a waveform in which the pulsating output is switched at a high frequency.
  • FIG. 4C shows the current flowing from the output point c of the choke coils CH1 and CH2 to the load.
  • the high-frequency current obtained by the on / off operation of the switching elements SW1 and SW2 is accumulated in the choke coils CH1 and CH2. Since the choke coils CH1 and CH2 absorb a high-frequency current having a frequency 10 2 to 10 4 times the frequency of the commercial AC power supply E, a large capacity is not necessary and a small one is sufficient.
  • the output lines of the two choke coils CH1 and CH2 and the output line of the second rectifier circuit R1 are connected in parallel as shown in FIG. This output line is connected to both terminals of the load LED.
  • the output lines of the two choke coils CH1 and CH2 and the output line of the second rectifier circuit R1 may be connected to each other in series as shown in FIG.
  • the output line of the choke coil CH1 and one output line of the second rectifier circuit R1 are connected to both terminals of the load LED.
  • the commercial alternating current rectified by the rectifying circuits R0 and R1 remains in the pulsating state, enters the switching circuits SW1 and SW2, is switched at a high frequency, and generally passes through the choke coils CH1 and CH2 and generally pulsating. It is supplied to the load LED as it is.
  • the phase advances as compared with the AC power source that enters the first rectifier circuit R0.
  • the phase difference ⁇ differs depending on the difference between the input voltage and the output voltage, but the closer the difference is, the closer to 90 degrees.
  • the material and type of the dielectric of the capacitor element can be arbitrarily selected from ceramic, paper, film and the like. Further, as described above, an inductor element which is a slow phase element may be used instead of the capacitor element.
  • the waveform combined by parallel or serial connection in this way overlaps the pulsating peaks and valleys, resulting in the pulsating flow frequency (for example, If the commercial AC power source E is 60 Hz, the frequency component is higher than 120 Hz). Therefore, voltage fluctuation and current fluctuation applied to the load LED can be suppressed.
  • a smoothing circuit including an electrolytic capacitor is not required, an electrolytic capacitor having a short lifetime is generally unnecessary, and the life and size of the DC power supply device can be increased.
  • FIG. 10 is a circuit diagram showing a DC power supply device 10B according to a modification obtained by partially modifying FIG.
  • the capacitor element C1 is inserted only between the power line on the hot side L of the commercial AC power supply E and one input line of the second rectifier circuit R1.
  • the phase difference ⁇ is obtained by the capacitor element C1, but since it is asymmetrical when viewed from the load, a ripple component increases in the synthesized waveform.
  • the effect of the present invention can be obtained in which the electrolytic capacitor is omitted and voltage fluctuation or current fluctuation applied to the load can be suppressed.
  • FIGS. 11 and 12 an improved version of FIG. 10 is shown in FIGS.
  • the capacitor element C1 is inserted only between the hot L power line of the commercial AC power supply E and one input line of the second rectifier circuit R1.
  • an inductor element that is a slow phase element may be employed.
  • the configuration and connection of the first rectifier circuit R0 and the second rectifier circuit R1 are the same as those shown in FIGS.
  • a transformer T0 having a function as an insulating circuit is connected to the output side of the converter circuit that converts the output of the first rectifier circuit R0.
  • a secondary rectifier circuit R ′ is connected to the secondary side of the transformer T0, and the secondary voltage of the transformer T0 is rectified and supplied to the load.
  • the converter circuit is connected to both output lines of the first rectifier circuit R0, and includes parallel switching elements SW3 and SW4 for switching the pulsating current output at high frequencies opposite to each other, and parallel switching elements SW3 and SW4. Capacitors C3 and C4 connected to both end points are provided.
  • the intermediate point of series switching elements SW3 and SW4 and the intermediate point of capacitors C3 and C4 are connected to the primary winding of transformer T0.
  • the opposite phase pulse voltages are supplied to the gates of the two switching elements SW3 and SW4.
  • the commercial AC rectified by the first rectifier circuit R0 enters the switching circuits SW3 and SW4 in a pulsating manner, is switched at a high frequency, and is stepped up or stepped down by the transformer T0 and supplied to the load.
  • the phase is advanced compared to the AC power source entering the first rectifier circuit R0.
  • the AC power supply whose phase has advanced and the AC power supply supplied from the secondary side of the transformer T0 are connected in parallel to each other and connected to both terminals of the load.
  • the two AC power supplies may be connected in series with each other and connected to both terminals of the load.
  • the peaks and valleys of the pulsating flow overlap each other (see FIG. 9C), and as a result, the waveform includes many frequency components higher than the frequency of the pulsating flow. . Therefore, voltage fluctuations and current fluctuations applied to the load can be suppressed.
  • the electrolytic capacitor which is said to have a short life, is not necessary, and the life and size of the DC power supply device can be increased.
  • a capacitor element C1 may be installed on the first rectifier circuit R0 side to advance the phase of the AC power supply entering the first rectifier circuit R0. .
  • FIGS. 13 and 14 are circuit diagrams showing the DC power supply device 10D when the capacitor element C1 is connected to the first rectifier circuit R0.
  • a voltage is directly applied from the second rectifier circuit R1 to the load.
  • the voltage applied to the load from the first rectifier circuit R0 is stepped down by the capacitor element C1 (that is, a voltage is applied to both ends of the capacitor element C1), and the stepped down voltage is applied to the load. Therefore, if it is desired to make the voltage applied to the load uniform, it is preferable to use a step-up transformer as the transformer T0.
  • FIGS. 17 and 18 show a circuit of a DC power supply device 10F that employs a switching element SW8 instead of the rectifier diode D.
  • FIG. A pulse voltage having the same frequency is applied to the gate of the switching element SW5 and the gate of the switching element SW8 in this circuit. Each pulse voltage has a phase opposite to each other, and when one gate is on, the other gate is off.
  • the same circuit as the circuit composed of the converter circuit, the transformer T0, and the subsequent rectifier circuit R ′ on the first rectifier circuit R0 side shown in FIGS. 13 and 14 is connected to the second rectifier circuit R1 side.
  • 19 and 20 are connected to both output lines of the second rectifier circuit R1, and are connected to the parallel switching elements SW6 and SW7 for switching the pulsating current outputs to each other, and both end points of the parallel switching elements SW6 and SW7.
  • Capacitors C6 and C7, a transformer T1, and a rectifier circuit R ′′ are shown.
  • the present invention is of course not limited to the embodiments.
  • a Cook method or the like other than the above-described chopper method may be used.
  • 21 and 22 show the converter circuit of the circuits of FIGS. 7 and 8 replaced with a Cuk type circuit. This Cuk-type converter circuit is inserted in parallel with both output lines of the first rectifier circuit R0, and a switching element SW9 for switching the pulsating current output at a high frequency, between both ends of the switching element SW9 and a load.
  • Capacitor elements C8 and C9 inserted into the capacitor elements, current maintaining diodes D connecting the output terminals of the capacitor elements C8 and C9, and current maintaining choke coils inserted in series at the output terminals of the capacitor elements C8 and C9, respectively. CH5 and CH6.
  • a high-frequency pulse voltage is supplied to the gate of the switching element SW9.
  • the switching frequency that is, the frequency of the gate pulse voltage is not limited, but is set to about 10 2 to 10 4 times the frequency of the commercial AC power supply E.
  • This high frequency is absorbed by the choke coils CH5 and CH6, but the pulsating current output from the first rectifier circuit R0 flows to the load.
  • a pulsating current also flows from the output line of the second rectifier circuit R1. Since the phase of these pulsating currents exceeds 0 degrees and shifts to 90 degrees due to the capacitor C1 inserted on the primary side of the second rectifier circuit R1, it is shown in FIG. As described above, a smooth current can be obtained.
  • the first rectifier circuit R0 and the second rectifier circuit R2 can be used without using a transformer. Another characteristic is that insulation with the rectifier circuit R1 is ensured. 21 and 22, the capacitor C1 is inserted only in the primary hot side L of the second rectifier circuit R1, but a capacitor may be inserted in the cold side N. The hot side L and the cold side N You may insert a capacitor in both. As a result, direct current insulation between the first rectifier circuit R0 and the second rectifier circuit R1 is ensured.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A direct-current power supply device is connected to a commercial alternating-current power supply (E) and provided with capacitor elements (C1, C2) for generating alternating-current power supplies with a phase difference (φ). The direct-current power supply device is also provided with a first rectifying circuit (R0) that obtains a pulsating flow by rectifying an alternating-current power supply, and a second rectifying circuit (R1) that is connected via the capacitor elements (C1, C2) and obtains a pulsating flow. A converter circuit is connected to the first rectifying circuit (R0), and outputs of the converter circuit and outputs of the second rectifying circuit (R1) are connected in parallel with each other and connected to both terminals of a load. Periodic voltage fluctuation and current fluctuation to be applied to the load can be suppressed by the converter circuit. Consequently, an electrolytic capacitor having a short life becomes unnecessary, thereby enabling an increase in the life of the device and a decrease in the size thereof.

Description

直流電源装置及びＬＥＤ点灯装置DC power supply device and LED lighting device
　本発明は、直流電力を供給する直流電源装置、及びＬＥＤ（発光ダイオード）を点灯させるＬＥＤ点灯装置に関するものである。 The present invention relates to a DC power supply for supplying DC power and an LED lighting device for lighting an LED (light emitting diode).
　商用の交流電源を用いて直流電源を得る直流電源装置は、商用の交流電源の電圧を降圧する変圧器（トランスレスの場合もある）と、この変圧器で変換された電源を整流して脈流を得る整流回路と、この整流回路によって得られた脈流を平滑する平滑回路とを備えている。これにより、きれいな直流を得て負荷に供給することができる。
　このような直流電源装置においては、交流周波数（５０Ｈｚ，６０Ｈｚ等）での電圧変動（リップル）を抑えるために、平滑回路に大容量の電解キャパシタを設置する必要がなる。 A DC power supply device that obtains a DC power supply using a commercial AC power supply rectifies the transformer (which may be transformerless) that steps down the voltage of the commercial AC power supply and rectifies the power source converted by this transformer. A rectifier circuit for obtaining a flow, and a smoothing circuit for smoothing a pulsating flow obtained by the rectifier circuit. Thereby, a clean direct current can be obtained and supplied to the load.
In such a DC power supply device, in order to suppress voltage fluctuation (ripple) at an AC frequency (50 Hz, 60 Hz, etc.), it is necessary to install a large capacity electrolytic capacitor in the smoothing circuit.
特開2009-038954号公報JP 2009-038954
　ところが、電解キャパシタは周知のように、熱や過電圧に弱く、長期間使用すると等価直列抵抗（ＥＳＲ）が増大して脈流を平滑する機能が弱くなってくる。こうなれば例えば負荷に蛍光灯や冷陰極管を採用したとき、発光のちらつきが顕著になり、光源として使用しづらいものになってしまう。
　そこで電解キャパシタを使用しないで、かつ、周期的な電圧変動（リップル）が無視できるような直流電源装置の開発が要望されている。 However, as is well known, the electrolytic capacitor is weak against heat and overvoltage, and when used for a long time, the equivalent series resistance (ESR) increases and the function of smoothing the pulsating flow becomes weak. In this case, for example, when a fluorescent lamp or a cold cathode tube is adopted as the load, the flickering of the light emission becomes remarkable and it becomes difficult to use as a light source.
Therefore, there is a demand for the development of a DC power supply apparatus that does not use an electrolytic capacitor and that can ignore periodic voltage fluctuations (ripples).
　そこで本発明は、周期的な電圧変動（リップル）が低減できると共に、小型で超寿命の直流電源装置及びＬＥＤ点灯装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a DC power supply device and an LED lighting device that can reduce periodic voltage fluctuations (ripples) and have a small size and a long life.
　本項において、参照符号は、後述する［発明を実施するための形態］における対応構成要素の参照符号を表すものであるが、これらの参照符号により特許請求の範囲を限定する趣旨ではない。
　本発明の直流電源装置は、商用の交流電源Ｅに対して接続され、互いに位相差がある、第１の交流電源から第ｎ（ｎは２以上の整数）の交流電源までを生成するための移相回路と、第１の交流電源を整流して脈流を得る第１の整流回路Ｒ0と、第２の交流電源を整流して脈流を得る第２の整流回路Ｒ1と、・・・第ｎの交流電源を整流して脈流を得る第ｎの整流回路Ｒn-1とを備えるものである。 In this section, reference numerals represent reference numerals of corresponding constituent elements in [Mode for Carrying Out the Invention] to be described later, but the scope of the claims is not limited by these reference numerals.
The DC power supply device of the present invention is connected to a commercial AC power supply E, and generates a range from a first AC power supply to an nth (n is an integer of 2 or more) AC power supply having a phase difference from each other A phase shift circuit, a first rectifier circuit R0 that rectifies the first AC power supply to obtain a pulsating current, a second rectifier circuit R1 that rectifies the second AC power supply to obtain a pulsating current,... And an n-th rectifier circuit Rn-1 that rectifies the n-th AC power source to obtain a pulsating flow.
　「位相差」とは商用の交流電源Ｅの１サイクルを３６０度としたときの位相差をいう。「脈流」とは平滑回路で平滑しない、整流回路の出力波形をいう。符号"・・・"は１からｎまで繰り返すことを意味する。
　第１の整流回路Ｒ0の出力線、第２の整流回路Ｒ1の出力線、・・・第ｎの整流回路Ｒn-1の出力線は、互いに直列又は並列に接続されて、負荷の両端子に接続されている。"ＺL"は負荷を示す。 The “phase difference” means a phase difference when one cycle of the commercial AC power source E is set to 360 degrees. “Pulsating flow” means an output waveform of the rectifier circuit that is not smoothed by the smoothing circuit. The symbol “...” Means that 1 to n are repeated.
The output line of the first rectifier circuit R0, the output line of the second rectifier circuit R1,... The output line of the nth rectifier circuit Rn-1 are connected in series or in parallel to both terminals of the load. It is connected. “ZL” indicates a load.
　この装置構成例を図１、図２に示す。図１、図２によれば、移相回路は、商用の交流電源Ｅと第２～第ｎの整流回路Ｒ1～Ｒn-1との間にそれぞれ挿入されている。図１は第１～第ｎの整流回路Ｒ0～Ｒn-1の出力線を並列に接続して負荷を駆動する状態、図２は第１～第ｎの整流回路Ｒ0～Ｒn-1の出力線を直列に接続して負荷を駆動する状態を示す。
　この構成であれば、負荷の駆動のために、第１～第ｎの整流回路Ｒ0～Ｒn-1から、互いに位相のずれた脈流が出力される。それぞれの脈流は、直列に接続され又は並列に接続されて、負荷の両端子に供給される。いずれかの整流回路の出力波形に対して、他の整流回路の出力波形に位相差が設定されているために、合波した波形は、当該脈流の山と谷どうしが重なり、結果的に脈流の基本周波数（例えば商用の交流電源Ｅが６０Ｈｚであれば基本周波数は１２０Ｈｚである）よりも高い周波数成分を多く含んでいる。このために負荷へ印加される電圧変動や電流変動が防止される。 An example of the configuration of this apparatus is shown in FIGS. According to FIGS. 1 and 2, the phase shift circuit is inserted between the commercial AC power source E and the second to nth rectifier circuits R1 to Rn-1. FIG. 1 shows a state in which output lines of first to nth rectifier circuits R0 to Rn-1 are connected in parallel to drive a load, and FIG. 2 shows output lines of first to nth rectifier circuits R0 to Rn-1. Shows a state in which a load is driven by connecting them in series.
With this configuration, pulsating currents out of phase with each other are output from the first to nth rectifier circuits R0 to Rn-1 for driving the load. Each pulsating flow is connected in series or connected in parallel and supplied to both terminals of the load. Since the phase difference is set in the output waveform of the other rectifier circuit with respect to the output waveform of one of the rectifier circuits, the combined waveform has overlapping peaks and troughs of the pulsating current, and as a result It contains many frequency components higher than the fundamental frequency of the pulsating current (for example, if the commercial AC power supply E is 60 Hz, the fundamental frequency is 120 Hz). For this reason, voltage fluctuation and current fluctuation applied to the load are prevented.
　移相回路の構成例を挙げると、商用の交流電源Ｅの第一側（ホット側Ｌ）及び第二側（コールド側Ｎ）の電源線と、少なくとも（ｎ－１）個の整流回路の両方の入力線との間に、それぞれキャパシタ素子を挿入して構成してもよい。この場合、キャパシタ素子の数は、合計２（ｎ－１）になる。第１の整流回路Ｒ0、・・・第ｎの整流回路Ｒn-1から直列又は並列に接続された出力は、商用の交流電源Ｅのホット側Ｌ及びコールド側Ｎに関して対称、すなわちホット側Ｌとコールド側Ｎを入れ替えてみても同じ構成となる。よって入力電圧の変動、負荷変動から受ける影響を減らすことができる。 As an example of the configuration of the phase shift circuit, both the first (hot side L) and second (cold side N) power lines of the commercial AC power source E and at least (n−1) rectifier circuits A capacitor element may be inserted between each of the input lines. In this case, the total number of capacitor elements is 2 (n−1). The outputs connected in series or in parallel from the first rectifier circuit R0,..., The nth rectifier circuit Rn-1 are symmetrical with respect to the hot side L and the cold side N of the commercial AC power source E, that is, with the hot side L. Even if the cold side N is replaced, the same configuration is obtained. Therefore, it is possible to reduce the influence of input voltage fluctuation and load fluctuation.
　移相回路の他の構成例を挙げると、商用の交流電源Ｅのホット側Ｌ又はコールド側Ｎのいずれかの電源線と、第１～第ｎの整流回路Ｒ0～Ｒn-1うち、少なくとも（ｎ－１）個の整流回路の片方の入力線との間に挿入されたキャパシタ素子により構成してもよい。この場合、キャパシタ素子の数は、合計（ｎ－１）になる。（ｎ－１）個の整流回路から直列又は並列に接続された出力は、商用の交流電源Ｅに対して対称とならないが、負荷に印加されるリップルを抑えるという効果は、十分に得ることができる。 As another configuration example of the phase shift circuit, at least one of the power line on the hot side L or the cold side N of the commercial AC power source E and the first to nth rectifier circuits R0 to Rn−1 (at least ( n-1) A capacitor element inserted between one of the rectifier circuits and one input line may be used. In this case, the total number of capacitor elements is (n−1). Outputs connected in series or in parallel from (n-1) rectifier circuits are not symmetric with respect to the commercial AC power supply E, but the effect of suppressing the ripple applied to the load can be sufficiently obtained. it can.
　この場合、（ｎ－１）個の整流回路を除いた、残り１個の整流回路の出力側と負荷との間を絶縁回路で絶縁することが好ましい。絶縁回路の例として、変圧器があげられる。
　また本発明の直流電源装置によれば、第１の整流回路Ｒ0の出力線に、第１の整流回路Ｒ0の出力を変換する第１のコンバータ回路が挿入されていることが好ましい。
　第１の整流回路Ｒ0の出力線と負荷との間にコンバータ回路Ｉ0を使った構成例を図３、図４に示す。コンバータ回路Ｉ0の電圧調整により、負荷にかかる電圧又は電流を所望の値に設定することができる。 In this case, it is preferable to insulate between the output side of the remaining one rectifier circuit and the load, excluding (n−1) rectifier circuits, with an insulating circuit. An example of an insulation circuit is a transformer.
According to the DC power supply device of the present invention, it is preferable that the first converter circuit for converting the output of the first rectifier circuit R0 is inserted into the output line of the first rectifier circuit R0.
3 and 4 show a configuration example in which the converter circuit I0 is used between the output line of the first rectifier circuit R0 and the load. By adjusting the voltage of the converter circuit I0, the voltage or current applied to the load can be set to a desired value.
　また、前述の第１のコンバータ回路Ｉ0に加えて、第２の整流回路Ｒ1の出力線に、第２の整流回路Ｒ1の出力を変換する第２のコンバータ回路Ｉ1が挿入され、・・・第ｎの整流回路Ｒn-1の出力線に、第ｎの整流回路Ｒn-1の出力を変換する第ｎのコンバータ回路Ｉn-1が挿入されている構成であってもよい。この回路構成例を図５，６に示す。この回路であれば、各コンバータ回路Ｉ0～Ｉn-1の調整により、負荷にかかる電圧又は電流を所望の値に設定することができる。 Further, in addition to the first converter circuit I0 described above, a second converter circuit I1 for converting the output of the second rectifier circuit R1 is inserted into the output line of the second rectifier circuit R1,. The configuration may be such that the nth converter circuit In-1 for converting the output of the nth rectifier circuit Rn-1 is inserted into the output line of the n rectifier circuit Rn-1. Examples of this circuit configuration are shown in FIGS. With this circuit, the voltage or current applied to the load can be set to a desired value by adjusting the converter circuits I0 to In-1.
　本発明によれば、負荷に印加されるリップルを抑えることができる。また、寿命が短いと言われる電解キャパシタが不要になり、装置の長寿命化と小型化を図ることが出来る。特にＬＥＤの点灯に用いた場合、点灯するＬＥＤの光のちらつきを、眼で見ても分からない程度にまで抑えることができる。
　本発明における上述の、又はさらに他の利点、特徴及び効果は、添付図面を参照して次に述べる実施形態の説明により明らかにされる。 According to the present invention, the ripple applied to the load can be suppressed. In addition, the electrolytic capacitor, which is said to have a short life, is not necessary, and the device can have a long life and can be downsized. In particular, when the LED is used for lighting, the flickering of the lighted LED can be suppressed to such an extent that it cannot be seen with the eyes.
The above-described or further advantages, features, and effects of the present invention will be made clear by the following description of embodiments with reference to the accompanying drawings.
移相回路と、複数の整流回路とを備え、整流回路の出力を並列に接続した、本発明の直流電源装置の構成例を示す回路図である。It is a circuit diagram which shows the structural example of the DC power supply device of this invention which provided with the phase-shift circuit and the some rectifier circuit, and connected the output of the rectifier circuit in parallel. 移相回路と、複数の整流回路とを備え、整流回路の出力を直列に接続した、本発明の直流電源装置の構成例を示す回路図である。It is a circuit diagram which shows the structural example of the direct-current power supply device of this invention which provided with the phase-shift circuit and the some rectifier circuit, and connected the output of the rectifier circuit in series. 図１の回路に、１つのコンバータ回路を追加して構成した、本発明の直流電源装置の構成例を示す回路図である。FIG. 2 is a circuit diagram illustrating a configuration example of a DC power supply device of the present invention configured by adding one converter circuit to the circuit of FIG. 1. 図２の回路に、１つのコンバータ回路を追加して構成した、本発明の直流電源装置の変形例を示す回路図である。FIG. 5 is a circuit diagram showing a modification of the DC power supply device of the present invention, which is configured by adding one converter circuit to the circuit of FIG. 2. 図１の回路に、複数のコンバータ回路を追加して構成した、本発明の直流電源装置の構成例を示す回路図である。FIG. 2 is a circuit diagram showing a configuration example of a DC power supply device of the present invention configured by adding a plurality of converter circuits to the circuit of FIG. 1. 図２の回路に、複数のコンバータ回路を追加して構成した、本発明の直流電源装置の構成例を示す回路図である。FIG. 3 is a circuit diagram showing a configuration example of a DC power supply device according to the present invention in which a plurality of converter circuits are added to the circuit of FIG. 2. 本発明の実施形態に係る直流電源装置１０Ａ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of 10A (parallel connection) of DC power supply devices which concern on embodiment of this invention. 本発明の実施形態に係る直流電源装置１０Ａ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of 10A (series connection) DC power supply device which concerns on embodiment of this invention. 直流電源装置１０Ａの各点ａ，ｂの電圧波形図、点ｃの電流波形図である。FIG. 4 is a voltage waveform diagram at points a and b and a current waveform diagram at point c of the DC power supply device 10A. 本発明の他の実施形態に係る直流電源装置１０Ｂの回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10B which concerns on other embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｃ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of 10 C (parallel connection) of DC power supply devices which concern on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｃ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of 10 C of DC power supply devices (series connection) which concerns on other embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｄ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10D (parallel connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｄ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10D (series connection) which concerns on other embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｅ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10E (parallel connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｅ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10E (series connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｆ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10F (parallel connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｆ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10F (series connection) which concerns on other embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｇ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10G (parallel connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｇ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10G (series connection) which concerns on other embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｈ（並列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10H (parallel connection) which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る直流電源装置１０Ｈ（直列接続）の回路構成を示す回路図である。It is a circuit diagram which shows the circuit structure of DC power supply device 10H (series connection) which concerns on other embodiment of this invention.
　以下、本発明の実施の形態を、添付図面を参照しながら詳細に説明する。
　図７及び図８は、本発明が適用される直流電源装置１０Ａの具体的回路図である。この直流電源装置１０Ａは、負荷を駆動する装置である。負荷としては、特に限定されない。例えばＬＥＤ（発光ダイオード）、冷陰極管などの放電管、パーソナルコンピュータなどの電子機器、電気機器などが挙げられる。以下、ＬＥＤを負荷に用いた場合を説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
7 and 8 are specific circuit diagrams of the DC power supply device 10A to which the present invention is applied. The DC power supply device 10A is a device that drives a load. The load is not particularly limited. Examples thereof include LEDs (light emitting diodes), discharge tubes such as cold cathode tubes, electronic devices such as personal computers, and electrical devices. Hereinafter, a case where an LED is used as a load will be described.
　直流電源装置１０Ａは、商用の交流電源Ｅに対して接続されている。互いに０度を超える位相差φ（交流電源の交流１サイクルを３６０度とする）がある交流電源を生成するための「移相回路」として、商用の交流電源Ｅのホット側Ｌ及びコールド側Ｎの電源線と、第２の整流回路Ｒ1の両方の入力線との間にそれぞれ挿入されたキャパシタ素子Ｃ１，Ｃ２を備えている。このキャパシタ素子により、第１の整流回路Ｒ0に入力される電源に対して９０度に近い位相差を得ることが出来る。 The DC power supply device 10A is connected to a commercial AC power supply E. As a “phase shift circuit” for generating an AC power supply having a phase difference φ exceeding 0 degrees relative to each other (the AC cycle of the AC power supply is 360 degrees), a hot side L and a cold side N of a commercial AC power supply E are used. Capacitor elements C1 and C2 inserted between the power supply line and both input lines of the second rectifier circuit R1, respectively. With this capacitor element, it is possible to obtain a phase difference close to 90 degrees with respect to the power source input to the first rectifier circuit R0.
　なお「移相回路」として、進相素子であるキャパシタを例示したが、これに代えて遅相素子であるインダクタ素子を採用することもできる。
　直流電源装置１０Ａは、商用の交流電源Ｅに対して接続され、交流電源を整流して脈流を得る第１の整流回路Ｒ0と、キャパシタ素子Ｃ１，Ｃ２を介して接続され、脈流を得る第２の整流回路Ｒ1とを備えている。 In addition, although the capacitor which is a phase advance element was illustrated as a "phase-shift circuit", it can replace with this and can also employ | adopt the inductor element which is a phase-lag element.
The DC power supply device 10A is connected to a commercial AC power supply E, and is connected to the first rectifier circuit R0 that rectifies the AC power supply to obtain a pulsating current through the capacitor elements C1 and C2, thereby obtaining the pulsating current. And a second rectifier circuit R1.
　第１の整流回路Ｒ0の出力線には、第１の整流回路Ｒ0の出力を変換するＤＣ／ＤＣコンバータ回路が挿入されている。このコンバータ回路は、第１の整流回路Ｒ0の出力線に直列に挿入され、当該脈流出力を高周波でスイッチングするためのスイッチング素子ＳＷ１，ＳＷ２と、スイッチング素子の出力線どうしを結ぶ電流維持用ダイオードＤと、スイッチング素子ＳＷ１，ＳＷ２の出力線にそれぞれ直列に挿入された電流維持用チョークコイルＣＨ１，ＣＨ２と、を備えている。 A DC / DC converter circuit for converting the output of the first rectifier circuit R0 is inserted into the output line of the first rectifier circuit R0. This converter circuit is inserted in series with the output line of the first rectifier circuit R0, and the current maintaining diode that connects the switching elements SW1 and SW2 for switching the pulsating current output at a high frequency and the output lines of the switching elements. D and current maintaining choke coils CH1 and CH2 inserted in series in the output lines of the switching elements SW1 and SW2, respectively.
　２つのスイッチング素子ＳＷ１，ＳＷ２のゲートには、それぞれ同相のパルス電圧が供給される。すなわちパルス電圧により、１つのスイッチング素子ＳＷ１のゲートがオン（オフ）のときに、他のスイッチング素子ＳＷ２のゲートもオン（オフ）となる。この２つのスイッチング素子ＳＷ１，ＳＷ２のオンオフ動作により、第１の整流回路Ｒ0の脈流出力は、高周波でスイッチングされる。このスイッチング周波数、すなわちゲートパルス電圧の周波数は限定されないが、商用の交流電源Ｅの周波数の１０2～１０4倍程度に設定される。 In-phase pulse voltages are respectively supplied to the gates of the two switching elements SW1 and SW2. That is, when the gate of one switching element SW1 is turned on (off) by the pulse voltage, the gates of the other switching elements SW2 are also turned on (off). By the on / off operation of the two switching elements SW1 and SW2, the pulsating output of the first rectifier circuit R0 is switched at a high frequency. The switching frequency, that is, the frequency of the gate pulse voltage is not limited, but is set to about 10 2 to 10 4 times the frequency of the commercial AC power supply E.
　チョークコイルＣＨ１，ＣＨ２は、スイッチングされた高周波電流の高周波成分を吸収するとともに、負荷に印加される電流を維持するためのものである。
　ＤＣ／ＤＣコンバータ回路で降圧された電圧は負荷ＬＥＤにかかるが、この降圧された電圧と商用の交流電源Ｅの電圧との差は、キャパシタ素子Ｃ１の両端と、キャパシタ素子Ｃ２の両端に印加される。 The choke coils CH1 and CH2 are for absorbing the high frequency component of the switched high frequency current and maintaining the current applied to the load.
The voltage stepped down by the DC / DC converter circuit is applied to the load LED. The difference between the stepped down voltage and the voltage of the commercial AC power supply E is applied to both ends of the capacitor element C1 and both ends of the capacitor element C2. The
　図９（ａ）（ｂ）は、図７の直流電源装置１０Ａの各点ａ，ｂの電圧波形図、図９（ｃ）は点ｃの電流波形図である。同図（ａ）は、第１の整流回路Ｒ0の出力点ａの電圧を示し、これは脈流出力そのものである。同図（ｂ）は、スイッチング素子ＳＷ１，ＳＷ２の出力点ｂの電圧を示し、これは脈流出力が高周波でスイッチングされた波形となる。同図（ｃ）はチョークコイルＣＨ１，ＣＨ２の出力点ｃから負荷に流れる電流を示す。 9 (a) and 9 (b) are voltage waveform diagrams at points a and b of the DC power supply device 10A in FIG. 7, and FIG. 9 (c) is a current waveform diagram at point c. FIG. 5A shows the voltage at the output point a of the first rectifier circuit R0, which is the pulsating output itself. FIG. 2B shows the voltage at the output point b of the switching elements SW1 and SW2, which has a waveform in which the pulsating output is switched at a high frequency. FIG. 4C shows the current flowing from the output point c of the choke coils CH1 and CH2 to the load.
　図７に示されているように、スイッチング素子ＳＷ１，ＳＷ２のオンオフ動作により得られた高周波電流はチョークコイルＣＨ１，ＣＨ２に蓄積される。このチョークコイルＣＨ１，ＣＨ２は、商用の交流電源Ｅの周波数の１０2～１０4倍の周波数の高周波電流を吸収するものであるので、大きな容量は必要なく、小型のもので十分である。
　２つのチョークコイルＣＨ１，ＣＨ２の出力線と第２の整流回路Ｒ1の出力線は、図７に示すように、互いに並列に接続されている。この出力線が、負荷ＬＥＤの両端子に接続される。 As shown in FIG. 7, the high-frequency current obtained by the on / off operation of the switching elements SW1 and SW2 is accumulated in the choke coils CH1 and CH2. Since the choke coils CH1 and CH2 absorb a high-frequency current having a frequency 10 2 to 10 4 times the frequency of the commercial AC power supply E, a large capacity is not necessary and a small one is sufficient.
The output lines of the two choke coils CH1 and CH2 and the output line of the second rectifier circuit R1 are connected in parallel as shown in FIG. This output line is connected to both terminals of the load LED.
　また２つのチョークコイルＣＨ１，ＣＨ２の出力線と第２の整流回路Ｒ1の出力線は、図８に示すように、互いに直列に接続されていてもよい。図示するように、チョークコイルＣＨ１の出力線と、第２の整流回路Ｒ1の一方の出力線が負荷ＬＥＤの両端子に接続される。
　以上のように、整流回路Ｒ0，Ｒ1で整流された商用交流は脈流のまま、スイッチング回路ＳＷ１，ＳＷ２に入り、高周波でスイッチングされ、チョークコイルＣＨ１，ＣＨ２を通って、一般的には脈流のまま負荷ＬＥＤに供給される。 Further, the output lines of the two choke coils CH1 and CH2 and the output line of the second rectifier circuit R1 may be connected to each other in series as shown in FIG. As shown in the drawing, the output line of the choke coil CH1 and one output line of the second rectifier circuit R1 are connected to both terminals of the load LED.
As described above, the commercial alternating current rectified by the rectifying circuits R0 and R1 remains in the pulsating state, enters the switching circuits SW1 and SW2, is switched at a high frequency, and generally passes through the choke coils CH1 and CH2 and generally pulsating. It is supplied to the load LED as it is.
　第２の整流回路Ｒ1に入る交流電源は、キャパシタ素子Ｃ１，Ｃ２を介しているので、第１の整流回路Ｒ0に入る交流電源に比べれば、位相が進む。その位相差φは入力電圧と出力電圧との差によって異なるが、差が大きくなればなるほど９０度に近くなる。なおキャパシタ素子の誘電体の材質・種類はセラミック、紙、フィルムなど任意に選ぶことができる。また、キャパシタ素子に代えて遅相素子であるインダクタ素子を用いても良いことは、前述したとおりである。 Since the AC power source that enters the second rectifier circuit R1 passes through the capacitor elements C1 and C2, the phase advances as compared with the AC power source that enters the first rectifier circuit R0. The phase difference φ differs depending on the difference between the input voltage and the output voltage, but the closer the difference is, the closer to 90 degrees. The material and type of the dielectric of the capacitor element can be arbitrarily selected from ceramic, paper, film and the like. Further, as described above, an inductor element which is a slow phase element may be used instead of the capacitor element.
　このように並列又は直列接続により合波された波形は、図９（ｃ）の実線と破線に示されるように、当該脈流の山と谷どうしが重なり、結果的に脈流の周波数（例えば商用の交流電源Ｅが６０Ｈｚであれば１２０Ｈｚをいう）よりも高い周波数成分を多く含むことになる。したがって、負荷ＬＥＤに印加される電圧変動や電流変動を抑えることができる。また、電解キャパシタを含む平滑回路が必要ないので、一般に寿命が短い電解キャパシタが不要になり、直流電源装置の長寿命化と小型化を図ることが出来る。 As shown in the solid line and the broken line in FIG. 9C, the waveform combined by parallel or serial connection in this way overlaps the pulsating peaks and valleys, resulting in the pulsating flow frequency (for example, If the commercial AC power source E is 60 Hz, the frequency component is higher than 120 Hz). Therefore, voltage fluctuation and current fluctuation applied to the load LED can be suppressed. In addition, since a smoothing circuit including an electrolytic capacitor is not required, an electrolytic capacitor having a short lifetime is generally unnecessary, and the life and size of the DC power supply device can be increased.
　図１０は、図７を一部変形した変形例に係る直流電源装置１０Ｂを示す回路図である。この回路では、商用の交流電源Ｅのホット側Ｌの電源線と、第２の整流回路Ｒ1の片方の入力線との間にのみキャパシタ素子Ｃ１が挿入されている。この回路構成でも、キャパシタ素子Ｃ１により位相差φが得られるが、負荷から見て非対称になるので、合成された波形にはリップル成分が増える。しかしこの図１０の回路でも、電解キャパシタを省略し、負荷に印加される電圧変動又は電流変動を抑えることができるという本発明の効果が得られる。 FIG. 10 is a circuit diagram showing a DC power supply device 10B according to a modification obtained by partially modifying FIG. In this circuit, the capacitor element C1 is inserted only between the power line on the hot side L of the commercial AC power supply E and one input line of the second rectifier circuit R1. Even in this circuit configuration, the phase difference φ is obtained by the capacitor element C1, but since it is asymmetrical when viewed from the load, a ripple component increases in the synthesized waveform. However, even in the circuit of FIG. 10, the effect of the present invention can be obtained in which the electrolytic capacitor is omitted and voltage fluctuation or current fluctuation applied to the load can be suppressed.
　次に、図１０の改良形を図１１及び図１２に示す。この図１１及び図１２の直流電源装置１０Ｃは商用の交流電源Ｅのホット側Ｌの電源線と、第２の整流回路Ｒ1の片方の入力線との間にのみキャパシタ素子Ｃ１を挿入している。なおキャパシタ素子に代えて遅相素子であるインダクタ素子を採用することもできる。第１の整流回路Ｒ0と第２の整流回路Ｒ1の構成、接続については、図７，図８，図１０と同様である。 Next, an improved version of FIG. 10 is shown in FIGS. In the DC power supply device 10C shown in FIGS. 11 and 12, the capacitor element C1 is inserted only between the hot L power line of the commercial AC power supply E and one input line of the second rectifier circuit R1. . In place of the capacitor element, an inductor element that is a slow phase element may be employed. The configuration and connection of the first rectifier circuit R0 and the second rectifier circuit R1 are the same as those shown in FIGS.
　図７，図８，図１０と異なるところは、第１の整流回路Ｒ0の出力を変換するコンバータ回路の出力側に、絶縁回路としての機能を備える変圧器Ｔ0が接続されていることである。さらに変圧器Ｔ0の二次側には、後段の整流回路Ｒ′が接続され、変圧器Ｔ0の二次電圧を整流して負荷に供給している。
　コンバータ回路は、第１の整流回路Ｒ0の両出力線に対して接続され、当該脈流出力を互いに逆相の高周波でスイッチングするための並列スイッチング素子ＳＷ３，ＳＷ４と、並列スイッチング素子ＳＷ３，ＳＷ４の両端点に接続されたキャパシタＣ３，Ｃ４とを備えている。 7, 8, and 10 is that a transformer T0 having a function as an insulating circuit is connected to the output side of the converter circuit that converts the output of the first rectifier circuit R0. Further, a secondary rectifier circuit R ′ is connected to the secondary side of the transformer T0, and the secondary voltage of the transformer T0 is rectified and supplied to the load.
The converter circuit is connected to both output lines of the first rectifier circuit R0, and includes parallel switching elements SW3 and SW4 for switching the pulsating current output at high frequencies opposite to each other, and parallel switching elements SW3 and SW4. Capacitors C3 and C4 connected to both end points are provided.
　直列スイッチング素子ＳＷ３，ＳＷ４の中間点と、キャパシタＣ３，Ｃ４の中間点は、変圧器Ｔ0の一次側巻き線に接続されている。２つのスイッチング素子ＳＷ３，ＳＷ４のゲートには、それぞれ逆相のパルス電圧が供給される。
　以上のように、第１の整流回路Ｒ0で整流された商用交流は脈流のまま、スイッチング回路ＳＷ３，ＳＷ４に入り、高周波でスイッチングされ、変圧器Ｔ0によって昇圧又は降圧されて、負荷に供給される。変圧器Ｔ0は、スイッチングされた高周波電圧を扱うので、小型のもので済むことも大きな利点である。 The intermediate point of series switching elements SW3 and SW4 and the intermediate point of capacitors C3 and C4 are connected to the primary winding of transformer T0. The opposite phase pulse voltages are supplied to the gates of the two switching elements SW3 and SW4.
As described above, the commercial AC rectified by the first rectifier circuit R0 enters the switching circuits SW3 and SW4 in a pulsating manner, is switched at a high frequency, and is stepped up or stepped down by the transformer T0 and supplied to the load. The Since the transformer T0 handles a switched high-frequency voltage, it is a great advantage that a small transformer is sufficient.
　一方、第２の整流回路Ｒ1に入る交流電源は、キャパシタ素子Ｃ１を介しているので、第１の整流回路Ｒ0に入る交流電源に比べれば、位相が進んでいる。
　この位相が進んだ交流電源と、変圧器Ｔ0の二次側から供給される交流電源とは、図１１に示すように、互いに並列に接続されて、負荷の両端子に接続される。また２つの交流電源は、図１２に示すように、互いに直列に接続されて、負荷の両端子に接続されてもよい。 On the other hand, since the AC power source entering the second rectifier circuit R1 is via the capacitor element C1, the phase is advanced compared to the AC power source entering the first rectifier circuit R0.
As shown in FIG. 11, the AC power supply whose phase has advanced and the AC power supply supplied from the secondary side of the transformer T0 are connected in parallel to each other and connected to both terminals of the load. Further, as shown in FIG. 12, the two AC power supplies may be connected in series with each other and connected to both terminals of the load.
　並列又は直列接続により合波された波形は、当該脈流の山と谷どうしが重なり（図９（ｃ）参照）、結果的に当該脈流の周波数よりも高い周波数成分を多く含むことになる。したがって、負荷に印加される電圧変動や電流変動を抑えることができる。また、寿命が短いと言われる電解キャパシタが不要になり、直流電源装置の長寿命化と小型化を図ることが出来る。 In the waveform combined by the parallel or series connection, the peaks and valleys of the pulsating flow overlap each other (see FIG. 9C), and as a result, the waveform includes many frequency components higher than the frequency of the pulsating flow. . Therefore, voltage fluctuations and current fluctuations applied to the load can be suppressed. In addition, the electrolytic capacitor, which is said to have a short life, is not necessary, and the life and size of the DC power supply device can be increased.
　また、この図１１、図１２の回路構成では、第１の整流回路Ｒ0の出力側と第２の整流回路Ｒ1の出力側とが変圧器Ｔ0により絶縁されるため、第１の整流回路Ｒ0と第２の整流回路Ｒ1との間をノーマルモード・ノイズなどが通過するのを防ぐことができ、悪影響を遮断できる。したがって、安定した動作を期待することができる。
　また変形例として、図１１、図１２の回路構成において、第１の整流回路Ｒ0の側にキャパシタ素子Ｃ１を設置して、第１の整流回路Ｒ0に入る交流電源の位相を進めることとしてもよい。 Further, in the circuit configurations of FIGS. 11 and 12, since the output side of the first rectifier circuit R0 and the output side of the second rectifier circuit R1 are insulated by the transformer T0, the first rectifier circuit R0 Normal mode noise and the like can be prevented from passing between the second rectifier circuit R1, and adverse effects can be blocked. Therefore, stable operation can be expected.
As a modification, in the circuit configuration of FIGS. 11 and 12, a capacitor element C1 may be installed on the first rectifier circuit R0 side to advance the phase of the AC power supply entering the first rectifier circuit R0. .
　図１３、図１４は、キャパシタ素子Ｃ１が第１の整流回路Ｒ0の側に接続された場合の直流電源装置１０Ｄを示す回路図である。この回路では、第２の整流回路Ｒ1から負荷に電圧が直接印加される。第１の整流回路Ｒ0から負荷にかかる電圧はキャパシタ素子Ｃ１のため降圧され（すなわちキャパシタ素子Ｃ１の両端に電圧がかかる）、その降圧された電圧が負荷に印加される。したがって、負荷に印加される電圧を揃えたいならば、変圧器Ｔ0として昇圧型の変圧器を使って昇圧することが好ましい。 FIGS. 13 and 14 are circuit diagrams showing the DC power supply device 10D when the capacitor element C1 is connected to the first rectifier circuit R0. In this circuit, a voltage is directly applied from the second rectifier circuit R1 to the load. The voltage applied to the load from the first rectifier circuit R0 is stepped down by the capacitor element C1 (that is, a voltage is applied to both ends of the capacitor element C1), and the stepped down voltage is applied to the load. Therefore, if it is desired to make the voltage applied to the load uniform, it is preferable to use a step-up transformer as the transformer T0.
　また、図１３、図１４に示した第２の整流回路Ｒ1の側に、チョッパ方式のコンバータ回路を構成するＳＷ５と整流ダイオードＤとチョークコイルＣＨ３とを追加してもよい。このように追加した回路例を図１５、図１６に示す。
　さらに図１７，図１８は、整流ダイオードＤに代えて、スイッチング素子ＳＷ８を採用した直流電源装置１０Ｆの回路を示す。この回路のスイッチング素子ＳＷ５のゲートとスイッチング素子ＳＷ８のゲートには同一周波数のパルス電圧がそれぞれ印加される。各パルス電圧は互いに逆相であり、一方のゲートがオンのとき他方のゲートがオフになる。スイッチング素子ＳＷ５のゲート電圧が、パルスのオンオフサイクルの一周期に対してオンになる期間の比率(duration)が大きければ大きいほどコンバータ回路の出力電圧は大きくなる。スイッチング素子ＳＷ８のゲート電圧が、パルスのオンオフサイクルの一周期に対してオンになる期間の比率(duration)が大きければ大きいほどコンバータ回路の出力電圧は小さくなる。したがって、スイッチング素子ＳＷ５，ＳＷ８のゲートに印加されるパルス電圧の前記比率(duration)を０％から１００％まで変化させることによって、負荷にかかる電圧を可変にすることができ、ＬＥＤの明るさの調節ができる。 Further, SW5, rectifier diode D, and choke coil CH3 constituting a chopper type converter circuit may be added on the second rectifier circuit R1 side shown in FIGS. Examples of circuits added in this way are shown in FIGS.
17 and 18 show a circuit of a DC power supply device 10F that employs a switching element SW8 instead of the rectifier diode D. FIG. A pulse voltage having the same frequency is applied to the gate of the switching element SW5 and the gate of the switching element SW8 in this circuit. Each pulse voltage has a phase opposite to each other, and when one gate is on, the other gate is off. The larger the ratio of the period during which the gate voltage of the switching element SW5 is turned on with respect to one cycle of the on / off cycle of the pulse, the greater the output voltage of the converter circuit. The larger the ratio of the period during which the gate voltage of the switching element SW8 is turned on with respect to one cycle of the pulse on / off cycle, the smaller the output voltage of the converter circuit. Therefore, by changing the duration of the pulse voltage applied to the gates of the switching elements SW5 and SW8 from 0% to 100%, the voltage applied to the load can be varied, and the brightness of the LED can be changed. You can adjust.
　また、図１３、図１４に示した第１の整流回路Ｒ0の側の、コンバータ回路と変圧器Ｔ0と後段の整流回路Ｒ′とからなる回路と同じ回路を、第２の整流回路Ｒ1の側にも追加して設けることができる。図１９、図２０は、第２の整流回路Ｒ1の両出力線に対して接続され、当該脈流出力を互いにスイッチングするための並列スイッチング素子ＳＷ６，ＳＷ７と、並列スイッチング素子ＳＷ６，ＳＷ７の両端点に接続されたキャパシタＣ６，Ｃ７と、変圧器Ｔ1と、整流回路Ｒ″とを示している。 Further, the same circuit as the circuit composed of the converter circuit, the transformer T0, and the subsequent rectifier circuit R ′ on the first rectifier circuit R0 side shown in FIGS. 13 and 14 is connected to the second rectifier circuit R1 side. Can also be provided. 19 and 20 are connected to both output lines of the second rectifier circuit R1, and are connected to the parallel switching elements SW6 and SW7 for switching the pulsating current outputs to each other, and both end points of the parallel switching elements SW6 and SW7. Capacitors C6 and C7, a transformer T1, and a rectifier circuit R ″ are shown.
　いままで本発明の実施の形態を説明したが、本発明は、実施の形態に限られるものでないことはもちろんである。例えば、ＤＣ／ＤＣコンバータとして、前述したチョッパ方式以外にクック(Cuk)方式などを用いても良い。
　図２１、図２２は、図７、図８の回路のコンバータ回路をＣｕｋ型の回路に置き換えたものを示す。このＣｕｋ型のコンバータ回路は、第１の整流回路Ｒ0の両出力線に並列に挿入され、当該脈流出力を高周波でスイッチングするためのスイッチング素子ＳＷ９と、スイッチング素子ＳＷ９の両端と負荷との間にそれぞれ挿入されたキャパシタ素子Ｃ８，Ｃ９と、キャパシタ素子Ｃ８，Ｃ９の出力端どうしを結ぶ電流維持用ダイオードＤと、キャパシタ素子Ｃ８，Ｃ９の出力端にそれぞれ直列に挿入された電流維持用チョークコイルＣＨ５，ＣＨ６と、を備えている。 Although the embodiments of the present invention have been described so far, the present invention is of course not limited to the embodiments. For example, as the DC / DC converter, a Cook method or the like other than the above-described chopper method may be used.
21 and 22 show the converter circuit of the circuits of FIGS. 7 and 8 replaced with a Cuk type circuit. This Cuk-type converter circuit is inserted in parallel with both output lines of the first rectifier circuit R0, and a switching element SW9 for switching the pulsating current output at a high frequency, between both ends of the switching element SW9 and a load. Capacitor elements C8 and C9 inserted into the capacitor elements, current maintaining diodes D connecting the output terminals of the capacitor elements C8 and C9, and current maintaining choke coils inserted in series at the output terminals of the capacitor elements C8 and C9, respectively. CH5 and CH6.
　スイッチング素子ＳＷ９のゲートには、高周波のパルス電圧が供給される。このスイッチング素子ＳＷ９のオンオフ動作により、第１の整流回路Ｒ0の脈流出力は高周波でスイッチングされる。このスイッチング周波数、すなわちゲートパルス電圧の周波数は限定されないが、商用の交流電源Ｅの周波数の１０2～１０4倍程度に設定される。この高周波はチョークコイルＣＨ５，ＣＨ６で吸収されるが、第１の整流回路Ｒ0から出力される脈流電流は、負荷に流れる。一方、第２の整流回路Ｒ1の出力線からも脈流電流が流れる。これらの脈流電流の位相は、第２の整流回路Ｒ1の一次側に挿入されたキャパシタＣ１のために０度を超え９０度までのずれを生じるので、総合すれば図９（ｃ）に示したように、平滑な電流が得られる。 A high-frequency pulse voltage is supplied to the gate of the switching element SW9. By the on / off operation of the switching element SW9, the pulsating output of the first rectifier circuit R0 is switched at a high frequency. The switching frequency, that is, the frequency of the gate pulse voltage is not limited, but is set to about 10 2 to 10 4 times the frequency of the commercial AC power supply E. This high frequency is absorbed by the choke coils CH5 and CH6, but the pulsating current output from the first rectifier circuit R0 flows to the load. On the other hand, a pulsating current also flows from the output line of the second rectifier circuit R1. Since the phase of these pulsating currents exceeds 0 degrees and shifts to 90 degrees due to the capacitor C1 inserted on the primary side of the second rectifier circuit R1, it is shown in FIG. As described above, a smooth current can be obtained.
　また、この回路では、第１の整流回路Ｒ0と負荷との間にはキャパシタＣ８，Ｃ９が介在しているので、変圧器などを使用しなくても、第１の整流回路Ｒ0と第２の整流回路Ｒ1との間の絶縁が確保されているのも特徴である。
　図２１、図２２では、第２の整流回路Ｒ1の一次側のホット側ＬにのみキャパシタＣ１を挿入していたが、コールド側Ｎにキャパシタを挿入しても良く、ホット側Ｌおよびコールド側Ｎの両方にキャパシタを挿入しても良い。これにより、第１の整流回路Ｒ0と第２の整流回路Ｒ1との間の直流的な絶縁が確保される。 In this circuit, since the capacitors C8 and C9 are interposed between the first rectifier circuit R0 and the load, the first rectifier circuit R0 and the second rectifier circuit R2 can be used without using a transformer. Another characteristic is that insulation with the rectifier circuit R1 is ensured.
21 and 22, the capacitor C1 is inserted only in the primary hot side L of the second rectifier circuit R1, but a capacitor may be inserted in the cold side N. The hot side L and the cold side N You may insert a capacitor in both. As a result, direct current insulation between the first rectifier circuit R0 and the second rectifier circuit R1 is ensured.
Ｅ　商用の交流電源
φ１～φn-1  移相回路
Ｉ１～Ｉn-1  コンバータ回路
ＬＥＤ　負荷である発光ダイオード
Ｒ0  第１の整流回路
Ｒn-1  第ｎの整流回路
Ｔ0，Ｔ1  変圧器
ＺL  負荷
１０Ａ～１０Ｈ　直流電源装置 E Commercial AC power supply φ1 to φn-1 Phase shift circuit I1 to In-1 Converter circuit LED Light emitting diode R0 as load First rectifier circuit Rn-1 nth rectifier circuit T0, T1 Transformer ZL Load 10A to 10H DC power supply

Claims (11)

  1. 　負荷を駆動するための直流電源装置であって、
    　商用の交流電源に対して接続され、互いに位相差がある、第１の交流電源から第ｎ（ｎは２以上の整数とする）の交流電源までを生成するための移相回路と、
    　前記第１の交流電源を整流して脈流を得る第１の整流回路と、前記第２の交流電源を整流して脈流を得る第２の整流回路と、・・・前記第ｎの交流電源を整流して脈流を得る第ｎの整流回路とを備え（符号"・・・"は１からｎまで繰り返すことを意味する。）、
    　前記第１の整流回路の出力線、前記第２の整流回路の出力線、・・・前記第ｎの整流回路の出力線は、互いに直列又は互いに並列に接続されて、前記負荷の両端子に接続されることを特徴とする直流電源装置。     A DC power supply device for driving a load,
    A phase shift circuit for generating from a first AC power source to an nth (n is an integer of 2 or more) AC power source connected to a commercial AC power source and having a phase difference from each other;
    A first rectifier circuit that rectifies the first AC power source to obtain a pulsating current, a second rectifier circuit that rectifies the second AC power source to obtain a pulsating current,. An n-th rectifier circuit that rectifies the power source to obtain a pulsating flow (the sign “...” Means that 1 to n are repeated).
    The output line of the first rectifier circuit, the output line of the second rectifier circuit, ..., the output line of the nth rectifier circuit are connected in series or in parallel with each other and connected to both terminals of the load. A DC power supply device characterized by being connected.
  2. 　前記移相回路は、前記商用の交流電源の第一側及び第二側の電源線と、前記第１～第ｎの整流回路うちの少なくとも（ｎ－１）個の整流回路の両方の入力線との間に、それぞれ挿入されたキャパシタ素子を含む請求項１記載の直流電源装置。 The phase shift circuit includes input lines for both the first and second power supply lines of the commercial AC power supply and at least (n−1) rectifier circuits among the first to nth rectifier circuits. The DC power supply device according to claim 1, further comprising capacitor elements respectively inserted between the first and second capacitor elements.
  3. 　ｎ＝２であり、前記キャパシタ素子は、前記第２の整流回路の両方の入力線にそれぞれ挿入されている請求項２記載の直流電源装置。 3. The DC power supply device according to claim 2, wherein n = 2 and the capacitor element is inserted into both input lines of the second rectifier circuit.
  4. 　前記移相回路は、前記商用の交流電源の第一側又は第二側のいずれかの電源線と、前記第１～第ｎの整流回路うち、少なくとも（ｎ－１）個の整流回路の片方の入力線との間に挿入されたキャパシタ素子を含む請求項１記載の直流電源装置。 The phase shift circuit includes at least one of (n-1) rectifier circuits among the first or second power line of the commercial AC power supply and the first to nth rectifier circuits. The direct current power supply device according to claim 1, further comprising a capacitor element inserted between the first input line and the second input line.
  5. 　前記（ｎ－１）個の整流回路を除いた、残り１個の整流回路の出力側と前記負荷との間は絶縁回路で絶縁されている請求項４記載の直流電源装置。 5. The DC power supply device according to claim 4, wherein the output side of the remaining one rectifier circuit excluding the (n-1) rectifier circuits and the load are insulated by an insulation circuit.
  6. 　ｎ＝２であり、前記キャパシタ素子は、前記第２の整流回路の片方の入力線に挿入されている請求項４記載の直流電源装置。 5. The DC power supply device according to claim 4, wherein n = 2 and the capacitor element is inserted into one input line of the second rectifier circuit.
  7. 　前記第１の整流回路の出力側と前記負荷との間は第１の変圧器で絶縁されている請求項６記載の直流電源装置。 The DC power supply device according to claim 6, wherein the output side of the first rectifier circuit and the load are insulated by a first transformer.
  8. 　前記第２の整流回路の出力側と前記負荷との間は第２の変圧器で絶縁されている請求項７記載の直流電源装置。 The DC power supply device according to claim 7, wherein the output side of the second rectifier circuit and the load are insulated by a second transformer.
  9. 　前記第１の整流回路の出力線に、前記第１の整流回路の出力を変換する第１のコンバータ回路が挿入されている請求項１から請求項８のいずれか１項に記載の直流電源装置。 The DC power supply device according to any one of claims 1 to 8, wherein a first converter circuit for converting an output of the first rectifier circuit is inserted into an output line of the first rectifier circuit. .
  10. 　前記第２の整流回路の出力線に、前記第２の整流回路の出力を変換する第２のコンバータ回路が挿入され、
    　前記第３の整流回路の出力線に、前記第３の整流回路の出力を変換する第３のコンバータ回路が挿入され、・・・
    　前記第ｎの整流回路の出力線に、前記第ｎの整流回路の出力を変換する第ｎのコンバータ回路が挿入されている請求項９記載の直流電源装置。     A second converter circuit for converting the output of the second rectifier circuit is inserted into the output line of the second rectifier circuit;
    A third converter circuit for converting the output of the third rectifier circuit is inserted into the output line of the third rectifier circuit;
    10. The DC power supply device according to claim 9, wherein an n-th converter circuit for converting an output of the n-th rectifier circuit is inserted into an output line of the n-th rectifier circuit.
  11. 　請求項１から請求項８のいずれか１項に記載の直流電源装置を、発光ダイオードを点灯させるために用いてなるＬＥＤ点灯装置。 An LED lighting device using the DC power supply device according to any one of claims 1 to 8 for lighting a light emitting diode.
PCT/JP2009/005117 2009-06-09 2009-10-02 Direct-current power supply device and led lighting device WO2010143239A1 (en)

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JP2009-138380 2009-06-09
JP2009-138371 2009-06-09
JP2009138380A JP2010287340A (en) 2009-06-09 2009-06-09 Led lighting device
JP2009138371A JP2010288329A (en) 2009-06-09 2009-06-09 Dc power supply

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102790540A (en) * 2012-08-29 2012-11-21 李蓉 LED (Light-Emitting Diode) light source
US9345080B2 (en) 2011-08-23 2016-05-17 Koninklijke Philips N.V. LED light source
WO2017181076A1 (en) * 2016-04-15 2017-10-19 Emerson Electric Co. Power factor correction circuits and methods including partial power factor correction operation for boost and buck power converters
US9933842B2 (en) 2016-04-15 2018-04-03 Emerson Climate Technologies, Inc. Microcontroller architecture for power factor correction converter
US9965928B2 (en) 2016-04-15 2018-05-08 Emerson Climate Technologies, Inc. System and method for displaying messages in a column-by-column format via an array of LEDs connected to a circuit of a compressor
US10075065B2 (en) 2016-04-15 2018-09-11 Emerson Climate Technologies, Inc. Choke and EMI filter circuits for power factor correction circuits
US10277115B2 (en) 2016-04-15 2019-04-30 Emerson Climate Technologies, Inc. Filtering systems and methods for voltage control
US10284132B2 (en) 2016-04-15 2019-05-07 Emerson Climate Technologies, Inc. Driver for high-frequency switching voltage converters
US10305373B2 (en) 2016-04-15 2019-05-28 Emerson Climate Technologies, Inc. Input reference signal generation systems and methods
US10656026B2 (en) 2016-04-15 2020-05-19 Emerson Climate Technologies, Inc. Temperature sensing circuit for transmitting data across isolation barrier
US10763740B2 (en) 2016-04-15 2020-09-01 Emerson Climate Technologies, Inc. Switch off time control systems and methods
JP2021517446A (en) * 2018-03-07 2021-07-15 ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー Devices and methods with power conversion using multiple rectifier circuits
JP7509424B2 (en) 2018-03-07 2024-07-02 ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー Apparatus and method with power conversion using multiple rectifier circuits

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI442811B (en) 2011-05-27 2014-06-21 Ind Tech Res Inst Light source driving device
US20140063877A1 (en) * 2011-08-01 2014-03-06 Mitsubishi Electric Corporation Power conversion apparatus
CN103944365B (en) * 2014-04-14 2016-05-18 山东大学 A kind of Single-phase PWM Rectifier is eliminated secondary ripple circuit
CN109428472A (en) * 2017-08-30 2019-03-05 中惠创智无线供电技术有限公司 A kind of doube bridge current rectifying and wave filtering circuit based on sensibility reciprocal control

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553990U (en) * 1978-10-04 1980-04-11
JPS59148568A (en) * 1983-02-15 1984-08-25 Matsushita Electric Works Ltd Power source device
JPH0249380U (en) * 1988-09-27 1990-04-05
JPH0739159A (en) * 1993-07-20 1995-02-07 Rohm Co Ltd Power supply device and electronic apparatus using it
JPH08218254A (en) * 1994-12-16 1996-08-27 Tsudakoma Corp Power unit of linear motor for moving knitting needle
JPH10117476A (en) * 1996-10-11 1998-05-06 Kyosan Electric Mfg Co Ltd Rectifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553990U (en) * 1978-10-04 1980-04-11
JPS59148568A (en) * 1983-02-15 1984-08-25 Matsushita Electric Works Ltd Power source device
JPH0249380U (en) * 1988-09-27 1990-04-05
JPH0739159A (en) * 1993-07-20 1995-02-07 Rohm Co Ltd Power supply device and electronic apparatus using it
JPH08218254A (en) * 1994-12-16 1996-08-27 Tsudakoma Corp Power unit of linear motor for moving knitting needle
JPH10117476A (en) * 1996-10-11 1998-05-06 Kyosan Electric Mfg Co Ltd Rectifier

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9345080B2 (en) 2011-08-23 2016-05-17 Koninklijke Philips N.V. LED light source
CN102790540A (en) * 2012-08-29 2012-11-21 李蓉 LED (Light-Emitting Diode) light source
US10320322B2 (en) 2016-04-15 2019-06-11 Emerson Climate Technologies, Inc. Switch actuation measurement circuit for voltage converter
US10437317B2 (en) 2016-04-15 2019-10-08 Emerson Climate Technologies, Inc. Microcontroller architecture for power factor correction converter
US9965928B2 (en) 2016-04-15 2018-05-08 Emerson Climate Technologies, Inc. System and method for displaying messages in a column-by-column format via an array of LEDs connected to a circuit of a compressor
US10075065B2 (en) 2016-04-15 2018-09-11 Emerson Climate Technologies, Inc. Choke and EMI filter circuits for power factor correction circuits
US10277115B2 (en) 2016-04-15 2019-04-30 Emerson Climate Technologies, Inc. Filtering systems and methods for voltage control
US10284132B2 (en) 2016-04-15 2019-05-07 Emerson Climate Technologies, Inc. Driver for high-frequency switching voltage converters
US10305373B2 (en) 2016-04-15 2019-05-28 Emerson Climate Technologies, Inc. Input reference signal generation systems and methods
US10312798B2 (en) 2016-04-15 2019-06-04 Emerson Electric Co. Power factor correction circuits and methods including partial power factor correction operation for boost and buck power converters
WO2017181076A1 (en) * 2016-04-15 2017-10-19 Emerson Electric Co. Power factor correction circuits and methods including partial power factor correction operation for boost and buck power converters
US9933842B2 (en) 2016-04-15 2018-04-03 Emerson Climate Technologies, Inc. Microcontroller architecture for power factor correction converter
US10656026B2 (en) 2016-04-15 2020-05-19 Emerson Climate Technologies, Inc. Temperature sensing circuit for transmitting data across isolation barrier
US10763740B2 (en) 2016-04-15 2020-09-01 Emerson Climate Technologies, Inc. Switch off time control systems and methods
US10770966B2 (en) 2016-04-15 2020-09-08 Emerson Climate Technologies, Inc. Power factor correction circuit and method including dual bridge rectifiers
US10928884B2 (en) 2016-04-15 2021-02-23 Emerson Climate Technologies, Inc. Microcontroller architecture for power factor correction converter
US11387729B2 (en) 2016-04-15 2022-07-12 Emerson Climate Technologies, Inc. Buck-converter-based drive circuits for driving motors of compressors and condenser fans
JP2021517446A (en) * 2018-03-07 2021-07-15 ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー Devices and methods with power conversion using multiple rectifier circuits
US11843312B2 (en) 2018-03-07 2023-12-12 The Board Of Trustees Of The Leland Stanford Junior University Apparatuses and methods involving power conversion using multiple rectifier circuits
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