WO2016157963A1 - Dispositif d'alimentation à découpage - Google Patents

Dispositif d'alimentation à découpage Download PDF

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Publication number
WO2016157963A1
WO2016157963A1 PCT/JP2016/052077 JP2016052077W WO2016157963A1 WO 2016157963 A1 WO2016157963 A1 WO 2016157963A1 JP 2016052077 W JP2016052077 W JP 2016052077W WO 2016157963 A1 WO2016157963 A1 WO 2016157963A1
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Prior art keywords
switching
input
circuit
coil
bridge circuit
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PCT/JP2016/052077
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English (en)
Japanese (ja)
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石倉祐樹
堀井浩幸
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株式会社村田製作所
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Publication of WO2016157963A1 publication Critical patent/WO2016157963A1/fr

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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac

Definitions

  • the present invention relates to a switching power supply device including an LLC resonant circuit.
  • Patent Document 1 discloses a power conversion device using a piezoelectric transformer.
  • the power conversion efficiency of the piezoelectric transformer becomes closer to the maximum value as the driving frequency of the piezoelectric transformer approaches the resonance frequency of the piezoelectric transformer. Therefore, in Patent Document 1, in order to bring the power conversion efficiency of the piezoelectric transformer close to the maximum value, the drive frequency of the piezoelectric transformer is swept, the output voltage is differentiated by a differentiation circuit, and the point where the differential value becomes zero is detected. By doing so, the resonance frequency of the piezoelectric transformer is detected.
  • a differential circuit is used to detect the resonance frequency of the piezoelectric transformer.
  • the differentiation circuit is easily affected by high-frequency noise, and may not be able to accurately detect the frequency peak.
  • the power can be controlled by frequency control, so the same can be performed.
  • the LLC resonant converter has a low resonance frequency determined by an excitation inductance, a resonance inductance, a resonance capacitor and a load, and a fixed high resonance frequency determined only by the resonance inductance and the resonance capacitor.
  • the LLC resonant converter has two resonance frequencies as described above, in the method using the differential circuit as described in Patent Document 1, which of the two resonance frequencies is detected. It is difficult to drive at a frequency that maximizes power conversion efficiency.
  • an object of the present invention is to provide a switching power supply device with high power conversion efficiency.
  • the switching power supply includes a first input / output port, a second input / output port, a first circuit connected to the first input / output port, a series circuit of the first switching element and the second switching element, a first capacitor, A first half bridge circuit configured by connecting a series circuit of second capacitors in parallel; a series circuit of a third switching element and a fourth switching element connected to the second input / output port; and a third capacitor And a second half bridge circuit configured by connecting a series circuit of a fourth capacitor in parallel, a first control circuit for switching control of the first half bridge circuit, and a switching control of the second half bridge circuit.
  • a second control circuit and a first coil and a second coil that are magnetically coupled, wherein the first coil is connected to the first half-bridge circuit; Between the first coil and the first half-bridge circuit, or between the second coil and the second half-bridge circuit.
  • a resonance inductor and a resonance capacitor provided at one of the terminals, a first power detection unit for detecting a first power input / output to / from the first input / output port, and an input / output to / from the second input / output port.
  • the first control circuit sweeps the switching frequency of the first half bridge circuit, and the transmission efficiency calculated by the transmission efficiency calculation unit is the highest transmission efficiency.
  • the second control circuit switches the second half-bridge circuit.
  • the second half-bridge circuit is subjected to switching control at a switching frequency at the highest transmission efficiency among the transmission efficiencies calculated by the transmission efficiency calculation unit by sweeping the frequency.
  • the switching power supply device includes an LLC resonance circuit
  • the switching frequency with the highest gain is detected based on the gain characteristic of the LLC resonance circuit, and the first half-bridge circuit or the second half-bridge circuit is subjected to switching control with the switching frequency. It is preferable.
  • the gain characteristic of the LLC resonant circuit changes due to manufacturing errors such as inductors and capacitors, or the weight of the load connected to the device output side. For this reason, it is difficult to detect a switching frequency with high transmission efficiency. Therefore, an optimum switching frequency can be obtained by determining the switching frequency based on the transmission efficiency calculated from the input power and the output power.
  • the first control circuit and the second control circuit are integrated on one chip.
  • the switching power supply device can be downsized.
  • the switching power supply includes a first input / output port, a second input / output port, a first circuit connected to the first input / output port, a series circuit of the first switching element and the second switching element, a first capacitor, A half bridge circuit configured by connecting a series circuit of second capacitors in parallel; a full bridge circuit connected to the second input / output port; and a third control circuit for controlling the switching of the half bridge circuit; A fourth control circuit that performs switching control of the full bridge circuit; a first coil and a second coil that are magnetically coupled; the first coil is connected to the half bridge circuit; and the second coil is the full bridge circuit. Or between the first coil and the half-bridge circuit, or between the second coil and the full-circuit.
  • a resonance inductor and a resonance capacitor provided on one side of the wedge circuit, a first power detection unit for detecting a first power input to and output from the first input / output port, and the second input / output port A second power detection unit that detects second power input to and output from the first power source; and a transmission efficiency calculation unit that calculates transmission efficiency from the first power and the second power, and the first coil of the transformer When the power is transmitted from the first coil to the second coil, the third control circuit sweeps the switching frequency of the half-bridge circuit, and the transmission efficiency calculated by the transmission efficiency calculation unit is the highest transmission efficiency.
  • the fourth control circuit is configured to Sweeping the switching frequency of the road, among the transmission efficiency of the transmission efficiency calculator has calculated, at the switching frequency when the highest transmission efficiency, it is preferable to switching control the full bridge circuit.
  • the switching power supply device includes an LLC resonance circuit
  • the gain characteristic of the LLC resonant circuit changes due to manufacturing errors such as inductors and capacitors, or the weight of the load connected to the device output side. For this reason, it is difficult to detect a switching frequency with high transmission efficiency. Therefore, an optimum switching frequency can be obtained by determining the switching frequency based on the transmission efficiency calculated from the input power and the output power.
  • the third control circuit and the fourth control circuit are integrated on one chip.
  • the switching power supply device can be downsized.
  • a switching power supply includes a first input / output port and a second input / output port, a first full bridge circuit connected to the first input / output port, A second full bridge circuit connected to the second input / output port; a fifth control circuit for switching control of the first full bridge circuit; a sixth control circuit for switching control of the second full bridge circuit; A transformer having a first coil and a second coil to be coupled, wherein the first coil is connected to the first full bridge circuit, and the second coil is connected to the second full bridge circuit; and the first coil And a resonance inductor and a resonance capacitor provided on one side between the first full bridge circuit or between the second coil and the second full bridge circuit, and are inputted to and outputted from the first input / output port.
  • the first full bridge circuit is controlled to be switched at the switching frequency at the highest transmission efficiency among the transmission efficiencies calculated by the transmission efficiency calculation unit, and the first coil is switched from the second coil of the transformer.
  • the sixth control circuit sweeps the switching frequency of the second full-bridge circuit, and the switching frequency at the highest transmission efficiency among the transmission efficiencies calculated by the transmission efficiency calculation unit
  • the second full bridge circuit is controlled to be switched.
  • the switching power supply device includes an LLC resonance circuit
  • the switching frequency with the highest gain is detected based on the gain characteristic of the LLC resonance circuit, and the first full bridge circuit or the second full bridge circuit is controlled to be switched at the switching frequency. It is preferable.
  • the gain characteristic of the LLC resonant circuit changes due to manufacturing errors such as inductors and capacitors, or the weight of the load connected to the device output side. For this reason, it is difficult to detect a switching frequency with high transmission efficiency. Therefore, an optimum switching frequency can be obtained by determining the switching frequency from the transmission efficiency calculated from the input power and the output power.
  • the fifth control circuit and the sixth control circuit are integrated on one chip.
  • the switching power supply device can be downsized.
  • the first power detection unit and the second power detection unit detect an average value within a predetermined period.
  • the resonance inductor is a leakage inductance of the transformer.
  • Circuit diagram of switching power supply apparatus Block diagram showing functions of control circuit
  • the figure which shows the gain characteristic of the LLC resonance circuit Flow chart showing processing executed by control circuit
  • the figure which shows another example of a switching power supply device The figure which shows another example of a switching power supply device
  • FIG. 1 is a circuit diagram of a switching power supply device 1 according to the first embodiment.
  • the switching power supply device 1 is used, for example, in a solar power generation system.
  • the switching power supply device 1 includes input / output terminals 11, 12, 21, and 22.
  • the input / output terminals 11 and 12 are connected to a solar panel and a power system.
  • the input / output terminals 21 and 22 are connected to a storage battery that stores electric power generated by the solar panel.
  • the input / output terminals 11 and 12 are examples of the “first input / output port” according to the present invention.
  • the input / output terminals 21 and 22 are examples of the “second input / output port” according to the present invention.
  • the switching power supply device 1 is a bidirectional DC-DC converter, which transforms a DC voltage input from the input / output terminals 11 and 12 to a predetermined value and outputs it to a storage battery connected to the input / output terminals 21 and 22. Charge. In addition, when the charging voltage of the storage battery is input from the input / output terminals 21 and 22, the switching power supply device 1 transforms the storage battery 1 to a predetermined value and supplies it to the power system connected to the input / output terminals 11 and 12.
  • the capacitor Ca and the switching circuit 13 are connected to the input / output terminals 11 and 12.
  • the switching circuit 13 is a full bridge circuit in which a series circuit of switching elements Q11 and Q12 and a series circuit of switching elements Q13 and Q14 are connected in parallel.
  • the switching circuit 13 is an example of the “first full bridge circuit” according to the present invention.
  • the switching elements Q11 to Q14 are MOS-FETs, and their gates are connected to the control circuit 14.
  • the connection point of the switching elements Q11 and Q12 is connected to the primary winding N1 of the transformer T via the inductor L1.
  • the primary winding N1 is an example of the “first coil” according to the present invention.
  • the connection point of the switching elements Q13 and Q14 is connected to the primary winding N1 of the transformer T through the capacitor C1.
  • An inductor Lm shown in FIG. 1 is an exciting inductance of the transformer T.
  • the inductor Lm may be an external actual part.
  • the inductor L1, the capacitor C1, and the inductor Lm constitute an LLC resonance circuit.
  • the inductor L1 is an example of the “resonance inductor” according to the present invention.
  • the capacitor C1 is an example of the “resonance capacitor” according to the present invention.
  • the inductor L1 may be a leakage inductance of the transformer T instead of an actual external component. In this case, since the number of parts can be reduced, cost reduction and size reduction are possible.
  • the capacitor Cb and the switching circuit 23 are connected to the input / output terminals 21 and 22.
  • the switching circuit 23 is a full bridge circuit in which a series circuit of switching elements Q21 and Q22 and a series circuit of switching elements Q23 and Q24 are connected in parallel.
  • the switching circuit 23 is an example of the “second full bridge circuit” according to the present invention.
  • the switching elements Q21 to Q24 are MOS-FETs, and their gates are connected to the control circuit 14.
  • connection point of the switching elements Q21 and Q22 is connected to the secondary winding N2 of the transformer T.
  • the connection point of the switching elements Q23 and Q24 is connected to the secondary winding N2 of the transformer T.
  • the secondary winding N2 is an example of the “second coil” according to the present invention.
  • the control circuit 14 is an integrated circuit in which a plurality of elements are integrated on one chip, and outputs a control signal to the gates of the switching elements Q11 to Q14 and the switching elements Q21 to Q24, and the switching elements Q11 to Q14, Q21 to Q24 is switching-controlled. Specifically, the control circuit 14 turns on and off the switching elements Q11 and Q12 and the switching elements Q13 and Q14 alternately. In addition, the control circuit 14 turns on and off the switching elements Q21 and Q22 and the switching elements Q23 and Q24 alternately.
  • the control circuit 14 is an example of the “fifth control circuit” and the “sixth control circuit” according to the present invention. By making the control circuit 14 an integrated circuit, the switching power supply device 1 can be reduced in size.
  • the switching power supply device 1 is a bidirectional DC-DC converter.
  • the control circuit 14 performs switching control of the switching circuit 13 at the switching frequency at which the power transmission efficiency is highest.
  • a voltage detecting resistor 15 and a current detecting element (current transformer) 16 are connected to the input / output terminals 11 and 12. Then, the control circuit 14 detects current and voltage input / output from the input / output terminals 11 and 12. Further, a voltage detection voltage dividing resistor 25 and a current detection element 26 are connected to the input / output terminals 21 and 22. The control circuit 14 detects currents and voltages input / output from the input / output terminals 21 and 22. The control circuit 14 determines an optimum switching frequency from the detected current and voltage, and controls the switching circuit 13 for switching.
  • FIG. 2 is a block diagram showing the functions of the control circuit 14.
  • the control circuit 14 is a DSP (Digital Signal Processor), and includes a switching control unit 141, a current detection unit 142, a voltage detection unit 143, a power calculation unit 144, a transmission efficiency calculation unit 145, and a frequency setting unit 146.
  • DSP Digital Signal Processor
  • the switching control unit 141 outputs a control signal to the gates of the switching elements Q11 to Q14, and alternately switches the switching elements Q11, Q12 and the switching elements Q13, Q14 at a switching frequency set by a frequency setting unit 146 described later. Turn on and off. Further, the switching control unit 141 sweeps the switching frequency for a predetermined period, and turns on and off the switching elements Q11 and Q12 and the switching elements Q13 and Q14 alternately. The switching control unit 141 outputs a control signal to the gates of the switching elements Q21 to Q24, and alternately turns on and off the switching elements Q21 and Q22 and the switching elements Q23 and Q24.
  • the current detector 142 detects the current input / output from the input / output terminals 11 and 12.
  • the current detector 142 detects currents input / output from the input / output terminals 21 and 22.
  • the voltage detector 143 detects the voltage input / output from the input / output terminals 11 and 12. Further, the voltage detection unit 143 detects the voltage input / output from the input / output terminals 21 and 22.
  • the current detection unit 142 and the voltage detection unit 143 detect current and voltage as needed.
  • the current detection unit 142 and the voltage detection unit 143 detect current and voltage as needed during a predetermined period, and calculate an average value thereof. Then, the current detection unit 142 and the voltage detection unit 143 output the calculated average value to the power calculation unit 144.
  • the current detection unit 142 and the voltage detection unit 143 exclude transient fluctuation components, noise, measurement errors, and the like from the output value to the power calculation unit 144 in order to calculate the average value of the current and voltage detected during a predetermined period. it can.
  • the power calculation unit 144 calculates input power from the input current and the input voltage. Further, the power calculation unit 144 calculates output power from the output current and the output voltage. As described above, during the switching frequency sweep period, the current detection unit 142 and the voltage detection unit 143 detect current and voltage as needed. The power calculation unit 144 calculates the input current and the input voltage every time the current detection unit 142 and the voltage detection unit 143 detect the current and the voltage.
  • the voltage dividing resistors 15 and 25, the current detection elements 16 and 26, the current detection unit 142, the voltage detection unit 143, and the power calculation unit 144 are the “first power detection unit” and the “second power detection unit” according to the present invention. Is an example.
  • the transmission efficiency calculation unit 145 calculates the power transmission efficiency of the switching power supply device 1 from the input power and the output power. The transmission efficiency calculation unit 145 calculates the power transmission efficiency each time the power calculation unit 144 calculates the input current and the input voltage.
  • the frequency setting unit 146 selects the highest power transmission efficiency from the plurality of power transmission efficiencies calculated by the transmission efficiency calculation unit 145 during the switching frequency sweeping period. And the frequency setting part 146 sets the frequency which opposes the selected power transmission efficiency to a switching frequency.
  • the switching frequency with the highest gain is detected based on the gain characteristic of the LLC resonant circuit, and the switching circuit 13 is switched at the switching frequency. It is preferable to control.
  • the gain characteristic of the LLC resonant circuit changes depending on manufacturing errors of inductors, capacitors, etc., or the charge amount of the storage battery connected to the input / output terminals 21 and 22 (light weight of the load).
  • FIG. 3 is a diagram showing gain characteristics of the LLC resonant circuit.
  • the horizontal axis in FIG. 3 indicates the frequency ratio (switching frequency / resonance frequency), and the vertical axis indicates the gain (output voltage / input voltage).
  • the gain peak increases as the load decreases.
  • the switching frequency is low.
  • the gain peak is small.
  • the switching frequency is high (same as the resonance frequency). That is, high power transmission efficiency cannot be obtained unless the switching frequency is appropriately set according to the load weight.
  • control circuit 14 calculates the transmission efficiency from the input / output power, and sets the frequency with the highest transmission efficiency as the switching frequency.
  • FIG. 4 is a flowchart showing processing executed by the control circuit 14.
  • the control circuit 14 executes a soft start process (S1).
  • the soft start process the control circuit 14 starts switching control of the switching circuit 13 at a switching frequency higher than the resonance frequency of the LLC resonance circuit. Thereafter, the switching frequency is lowered, the switching frequency is set to the resonance frequency, and the switching circuit 13 is subjected to switching control.
  • the control circuit 14 detects input power (S2). Specifically, the current detection unit 142 detects the input current, and the voltage detection unit 143 detects the input voltage. At this time, the current detection unit 142 and the voltage detection unit 143 detect the input current and the input voltage for a predetermined period, and calculate an average value for the period. Then, the power calculation unit 144 calculates input power from the input current and the input voltage.
  • the control circuit 14 detects the output power (S3). Specifically, the current detection unit 142 detects the output current, and the voltage detection unit 143 detects the output voltage. At this time, the current detection unit 142 and the voltage detection unit 143 detect the output current and the output voltage for a predetermined period, and calculate an average value for the period. Then, the power calculation unit 144 calculates output power from the output current and output voltage.
  • the transmission efficiency calculation unit 145 of the control circuit 14 calculates the power transmission efficiency from the input power and output power calculated by the power calculation unit 144 (S4).
  • the control circuit 14 determines whether or not the power transmission efficiency has been calculated N times (S5). If not performed N times (S5: NO), the switching control unit 141 of the control circuit 14 sweeps the switching frequency and performs switching control of the switching circuit 13 (S6). Thereafter, the control circuit 14 executes the processes after S2.
  • the control circuit 14 selects the highest transmission efficiency among the calculated transmission efficiencies (S7). Next, the control circuit 14 sets the frequency when the selected transmission efficiency is calculated to the switching frequency (S8). And the control circuit 14 performs the steady mode which carries out switching control of the switching circuit 13 with the set switching frequency (S9). Thereby, the switching power supply device 1 can be driven with high transmission efficiency.
  • processing shown in FIG. 4 is performed, for example, at the time of the inspection process or startup of the switching power supply device 1. This process may be performed only once, or may be performed every predetermined period (for example, every month). When it is performed only once, it is not necessary to execute processing frequently, so that the control circuit 14 does not need to be configured with a high-performance DSP. Moreover, when performing regularly, it can respond to the secular change of components.
  • the switching power supply device 1 can obtain high power transmission efficiency by controlling the switching of the switching circuit 13 at a frequency when the power transmission efficiency is high.
  • the switching circuit 13 of the switching power supply device 1 has been described as a full bridge circuit, but may be a half bridge circuit.
  • FIG. 5 is a diagram illustrating the switching power supply device 2 according to the second embodiment.
  • the switching power supply device 2 has a configuration in which the switching circuit 13A on the primary side of the transformer T is a half bridge circuit.
  • the switching circuit 13A and the switching circuit 23 are subjected to switching control by the control circuit 14A.
  • Other configurations are the same as those of the switching power supply device 1 according to the first embodiment.
  • the switching circuit 13A is configured by connecting a series circuit of capacitors C21 and C22 and a series circuit of switching elements Q31 and Q32 in parallel.
  • the switching element Q31 is an example embodiment that corresponds to the “first switching element” according to the present invention.
  • the switching element Q32 is an example embodiment that corresponds to the “second switching element” according to the present invention.
  • the capacitor C21 is an example of the “first capacitor” according to the present invention.
  • the capacitor C22 is an example of the “second capacitor” according to the present invention.
  • connection point of the capacitors C21 and C22 and the connection point of the switching elements Q31 and Q32 are connected to the transformer T via the inductor L1.
  • the capacitors C21 and C22, the inductor L1, and the inductor Lm constitute an LLC resonance circuit.
  • the control circuit 14A is an integrated circuit in which a plurality of elements are integrated on one chip.
  • the control circuit 14A sets the switching frequency of the switching circuit 13A and controls the switching of the switching circuit 13A in the same manner as the setting method described in the first embodiment.
  • the control circuit 14A sets the switching frequency of the switching circuit 23 and controls the switching circuit 23 for switching.
  • the control circuit 14A is an example of a “third control circuit” and a “fourth control circuit” according to the present invention. By making the control circuit 14A an integrated circuit, the switching power supply device 2 can be reduced in size.
  • the switching power supply device 2 includes a half-bridge circuit, high power transmission efficiency can be obtained by setting the switching frequency from the input / output power.
  • FIG. 6 is a diagram illustrating the switching power supply device 3 according to the third embodiment.
  • the switching power supply device 3 has a configuration in which the switching circuits 13A and 23A on the primary side and the secondary side of the transformer T are half bridge circuits.
  • the switching circuit 13A and the switching circuit 23A are subjected to switching control by the control circuit 14B.
  • Other configurations are the same as those of the switching power supply device 1 according to the first embodiment.
  • the switching circuit 23A is configured by connecting a series circuit of capacitors C21 and C22 and a series circuit of switching elements Q41 and Q42 in parallel.
  • the switching element Q41 is an example embodiment that corresponds to the “third switching element” according to the present invention.
  • the switching element Q42 is an example embodiment that corresponds to the “fourth switching element” according to the present invention.
  • the capacitor C31 is an example of the “third capacitor” according to the present invention.
  • the capacitor C32 is an example of the “fourth capacitor” according to the present invention.
  • the secondary winding N2 of the transformer T is connected to the connection point of the capacitors C31 and C32 and the connection point of the switching elements Q41 and Q42.
  • the control circuit 14B is an integrated circuit in which a plurality of elements are integrated on one chip.
  • the control circuit 14B sets the switching frequency of the switching circuit 13A and controls the switching of the switching circuit 13A in the same manner as the setting method described in the first embodiment.
  • the control circuit 14B sets the switching frequency of the switching circuit 23A and controls the switching of the switching circuit 23A.
  • the control circuit 14B is an example of a “first control circuit” and a “second control circuit” according to the present invention. By making the control circuit 14B an integrated circuit, the switching power supply device 2 can be downsized.
  • the switching power supply device 2 includes a half bridge circuit on each of the primary side and the secondary side of the transformer T, high power transmission efficiency can be obtained by setting the switching frequency from the input / output power.

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  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

La présente invention porte sur un dispositif d'alimentation à découpage (1) qui est pourvu : d'un circuit de commutation en pont complet (13) ; d'un circuit de commande (14) qui commande la commutation du circuit de commutation (13) ; d'un transformateur (T) dont un premier enroulement primaire (N1) est connecté à un point central du circuit de commutation (13) ; et d'une bobine d'inductance (L1) et d'un condensateur (C1) qui sont placés entre le circuit de commutation (13) et le transformateur (T). Le circuit de commande (14), tout en effectuant un balayage de la fréquence de commutation du circuit de commutation (13), détecte une tension d'entrée et une tension de sortie, et calcule le rendement de transmission à partir de la tension d'entrée et de la tension de sortie. La commande de commutation est effectuée sur le circuit de commutation (13) à la fréquence de commutation utilisée au moment où le rendement de transmission le plus élevé a été atteint parmi les rendements de transmission calculés. Cela permet d'obtenir un dispositif d'alimentation à découpage ayant un haut rendement de conversion de puissance.
PCT/JP2016/052077 2015-03-30 2016-01-26 Dispositif d'alimentation à découpage WO2016157963A1 (fr)

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JP2015-067952 2015-03-30

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CN106786667A (zh) * 2016-12-23 2017-05-31 芜湖国睿兆伏电子有限公司 一种用于llc谐振电源的移相调频混合控制电路
CN108011395A (zh) * 2017-12-11 2018-05-08 江苏辉伦太阳能科技有限公司 一种混合逆变器中充放电回路自动寻优的控制方法
JPWO2017213029A1 (ja) * 2016-06-06 2018-09-20 株式会社村田製作所 スイッチング電源装置
JP2019220373A (ja) * 2018-06-21 2019-12-26 三菱電機株式会社 点灯装置、照明器具および照明システム

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JP2014217199A (ja) * 2013-04-26 2014-11-17 株式会社ノーリツ 電力変換装置

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Publication number Priority date Publication date Assignee Title
JP2011072137A (ja) * 2009-09-25 2011-04-07 Panasonic Electric Works Co Ltd 系統連系インバータ装置
JP2011120370A (ja) * 2009-12-03 2011-06-16 Origin Electric Co Ltd 直流―直流双方向コンバータ回路
JP2013545426A (ja) * 2010-10-28 2013-12-19 エルテック ヴァレア アクティーゼルスカブ 直列共振形ｄｃ／ｄｃコンバータを制御する方法
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Publication number Priority date Publication date Assignee Title
JPWO2017213029A1 (ja) * 2016-06-06 2018-09-20 株式会社村田製作所 スイッチング電源装置
CN106786667A (zh) * 2016-12-23 2017-05-31 芜湖国睿兆伏电子有限公司 一种用于llc谐振电源的移相调频混合控制电路
CN108011395A (zh) * 2017-12-11 2018-05-08 江苏辉伦太阳能科技有限公司 一种混合逆变器中充放电回路自动寻优的控制方法
CN108011395B (zh) * 2017-12-11 2021-04-02 江苏辉伦太阳能科技有限公司 一种混合逆变器中充放电回路自动寻优的控制方法
JP2019220373A (ja) * 2018-06-21 2019-12-26 三菱電機株式会社 点灯装置、照明器具および照明システム
JP7067307B2 (ja) 2018-06-21 2022-05-16 三菱電機株式会社 照明システム

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