WO2016099071A1 - Procédé de conversion c.c.-c.c., appareil de conversion c.c.-c.c. et circuit de conversion c.c.-c.c. - Google Patents

Procédé de conversion c.c.-c.c., appareil de conversion c.c.-c.c. et circuit de conversion c.c.-c.c. Download PDF

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Publication number
WO2016099071A1
WO2016099071A1 PCT/KR2015/013443 KR2015013443W WO2016099071A1 WO 2016099071 A1 WO2016099071 A1 WO 2016099071A1 KR 2015013443 W KR2015013443 W KR 2015013443W WO 2016099071 A1 WO2016099071 A1 WO 2016099071A1
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Prior art keywords
switch
leg
operation mode
diode
circuit
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PCT/KR2015/013443
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English (en)
Korean (ko)
Inventor
차헌녕
김수한
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경북대학교 산학협력단
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Publication of WO2016099071A1 publication Critical patent/WO2016099071A1/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
    • 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
    • H02M3/285—Single converters with a plurality of output stages connected in parallel

Definitions

  • the present invention relates to a DC-DC converting method, a DC-DC converting device and a DC-DC converting circuit, and more particularly, to a DC-DC converting method, a DC-DC converting device and a DC-DC converting circuit for a double step-down. It is about.
  • Distributed power systems have a load that connects the DC-DC converter with the load and a power factor corrector (PFC) circuit that includes a direct current (DC) -to-DC converter and alternating current-to-DC conversion that require high voltage drop and isolation. It may consist of load converters.
  • PFC power factor corrector
  • the first method is a DC-DC converter structure consisting of a two-stage bus regulator.
  • the first power stage of this structure is the PFC stage for AC-DC power conversion and power factor correction.
  • the second power stage is a DC-DC converter requiring high voltage drop and isolation and high precision output voltage control.
  • the second method is an AC-DC converter consisting of a single-stage bus regulator.
  • the bus regulator includes AC-DC conversion, power factor correction, high step-down and isolation, and high-precision output voltage.
  • Loads such as telecommunications and computers require high power quality and reliability, requiring high-precision DC output voltage control, isolation, and high-voltage DC-DC converters.
  • full-bridge converters, half-bridge circuits, and forward converters are commonly used as DC-DC converters because they have step-down and isolation functions.
  • One aspect of the present invention provides a DC-DC converting method capable of reducing voltage stress between switches based on double step-down.
  • Another aspect of the present invention provides a circuit and apparatus for performing a DC-DC converting method capable of reducing voltage stress between switches based on double step-down.
  • a double step-down DC-DC converting method includes a step of receiving a first voltage from a double step-down DC-DC converter and a plurality of operation modes of the double step-down DC-DC converter. And converting the first voltage to a second voltage based on the second voltage converter, wherein the double step-down DC-DC converter includes a primary side circuit and a secondary side circuit for voltage converting.
  • a first full bridge circuit connected in series with a first switch wherein the first full bridge circuit includes a first leg and a second leg connected in parallel, and an input voltage line connecting the first leg and the second leg, A double step-down capacitor and a third switch are implemented on the first leg, a second switch and a fourth switch are implemented on the second leg, and the input voltage line is between the double step-down capacitor and the third switch.
  • a first point of and a second point between the second switch and the fourth switch may be connected, and a first inductor and a first transformer coil may be implemented on the input voltage line.
  • the plurality of operation modes may include a first operation mode, a second operation mode, a third operation mode, and a fourth operation mode, and the first operation mode may be turned on in the first switch and the fourth switch.
  • the second operation mode sets the first switch to a turn-off state and the fourth switch turns to a turn-on state
  • the third operation mode turns the second switch to a turn-on state and the fourth switch.
  • the fourth operation mode may set the second switch to a turn off state and the fourth switch to a turn on state.
  • the application rate of the first switch and the second switch and the application rate of the third switch and the fourth switch may be set differently.
  • the secondary circuit may be connected in series with a second full bridge circuit in which a second transformer coil induces a voltage from the first transformer coil, a second inductor connected in series with the second full bridge circuit, and the inductor. It can be implemented in a parallel circuit including a capacitor and an output load.
  • the second full bridge circuit may further include a third leg and a fourth leg connected in parallel, and an output voltage line connecting the third leg and the fourth leg, wherein a first diode and a third diode are implemented on the third leg. And a second diode and a fourth diode are implemented on the fourth leg, and the output voltage line is a first point between the first diode and the third diode and a second between the second diode and the fourth diode.
  • the second transformer coil may be implemented by connecting a point and on the output voltage line.
  • the double step-down DC-DC converter is a primary side circuit for converting a first voltage to a second voltage based on a plurality of operating modes. And a secondary side circuit, the primary side circuit including a first full bridge circuit connected in series with a first switch, wherein the first full bridge circuit includes a first leg, a second leg, and the first leg connected in parallel.
  • An input voltage line connecting a leg with the second leg, a double step-down capacitor and a third switch are implemented on the first leg, a second switch and a fourth switch are implemented on the second leg, and the input voltage line Is a first point between the double step-down capacitor and the third switch and a second point between the second switch and the fourth switch, and a first inductor and a first side on the input voltage line.
  • the coils can be implemented.
  • the plurality of operation modes may include a first operation mode, a second operation mode, a third operation mode, and a fourth operation mode, and the first operation mode may be turned on in the first switch and the fourth switch.
  • the second operation mode sets the first switch to a turn-off state and the fourth switch turns to a turn-on state
  • the third operation mode turns the second switch to a turn-on state and the fourth switch.
  • the fourth operation mode may set the second switch to a turn off state and the fourth switch to a turn on state.
  • the application rate of the first switch and the second switch and the application rate of the third switch and the fourth switch may be set differently.
  • the secondary circuit may be connected in series with a second full bridge circuit in which a second transformer coil induces a voltage from the first transformer coil, a second inductor connected in series with the second full bridge circuit, and the inductor. It can be implemented in a parallel circuit including a capacitor and an output load.
  • the second full bridge circuit may further include a third leg and a fourth leg connected in parallel, and an output voltage line connecting the third leg and the fourth leg, and a first diode and a third diode on the third leg. And a second diode and a fourth diode are implemented on the fourth leg, and the output voltage line is a first point between the first diode and the third diode and between the second diode and the fourth diode. A second point may be connected, and the second transformer coil may be implemented on the output voltage line.
  • a double step-down DC (DC) -DC converting device receives a first voltage and converts the first voltage to a second voltage based on a plurality of operating modes.
  • DC converter circuit unit An operation mode determination unit for setting the plurality of operation modes and a first switch, a second switch, a third switch, and a first switch included in the double step-down DC-DC converter circuit unit according to each of the plurality of operation modes.
  • a switch controller for controlling four switches, wherein the double step-down DC-DC converter circuit portion includes a primary side circuit and a secondary side circuit for voltage converting, and the primary side circuit is in series with the first switch.
  • a first full bridge circuit connected to each other, the first full bridge circuit including a first leg and a second leg connected in parallel and an input voltage line connecting the first leg and the second leg;
  • a second step-down capacitor and a third switch are implemented on the first leg, a second switch and a fourth switch are implemented on the second leg, and the input voltage line is a first step between the double step-down capacitor and the third switch.
  • a point and a second point between the second switch and the fourth switch may be connected, and a first inductor and a first transformer coil may be implemented on the input voltage line.
  • the plurality of operation modes may include a first operation mode, a second operation mode, a third operation mode, and a fourth operation mode, and the first operation mode may be turned on in the first switch and the fourth switch.
  • the second operation mode sets the first switch to a turn-off state and the fourth switch turns to a turn-on state
  • the third operation mode turns the second switch to a turn-on state and the fourth switch.
  • the fourth operation mode may set the second switch to a turn off state and the fourth switch to a turn on state.
  • the application rate of the first switch and the second switch and the application rate of the third switch and the fourth switch may be set differently.
  • the secondary circuit may be connected in series with a second full bridge circuit in which a second transformer coil induces a voltage from the first transformer coil, a second inductor connected in series with the second full bridge circuit, and the inductor. It can be implemented in a parallel circuit including a capacitor and an output load.
  • the second full bridge circuit may further include a third leg and a fourth leg connected in parallel, and an output voltage line connecting the third leg and the fourth leg, and a first diode and a third diode on the third leg. And a second diode and a fourth diode are implemented on the fourth leg, and the output voltage line is a first point between the first diode and the third diode and between the second diode and the fourth diode. A second point may be connected, and the second transformer coil may be implemented on the output voltage line.
  • the double step-down when a double step-down DC-DC converter is used, the double step-down may be based on an additional capacitor.
  • voltage stress between switches and core loss of the transformer can be prevented.
  • a double step-down DC-DC converter when a double step-down DC-DC converter is used, it can operate without saturation of the transformer under different ratios.
  • FIG. 1 is a conceptual diagram illustrating a double step-down DC-DC converter according to an embodiment of the present invention.
  • FIGS. 2A and 2B are conceptual views illustrating an operation mode of a double step-down DC-DC converter according to an embodiment of the present invention.
  • 3A and 3B are conceptual views illustrating an operation mode of a double step-down DC-DC converter according to an embodiment of the present invention.
  • Figure 4 is a graph of the current flowing in the device or the voltage across the device of the double step-down DC-DC converter according to the embodiment of the present invention.
  • 5A to 5D are graphs showing voltages and efficiencies of a transformer according to an embodiment of the present invention.
  • FIG. 6 is a conceptual diagram illustrating a double step-down DC-DC converter device according to an embodiment of the present invention.
  • DC-DC converter with high precision DC output voltage control and isolation, high voltage drop function may be required. It is commonly used for DC-DC converters because it allows step-down and isolation functions in full-bridge converters, half-bridge circuits, and forward converters in conventional distributed power systems.
  • the dual step-down DC-DC converter according to the embodiment of the present invention can reduce core loss under the same switching frequency and core size condition as compared with the conventional full bridge converter.
  • the double step-down DC-DC converter according to the embodiment of the present invention can reduce the voltage stress of the switch compared to the full bridge converter.
  • the dual step-down DC-DC converter according to the embodiment of the present invention can solve the voltage unbalance problem due to the difference in duty cycle of the switch input signal, which causes the core saturation problem of the transformer.
  • the embodiment of the present invention discloses a double step-down DC-DC converter.
  • FIG. 1 is a conceptual diagram illustrating a double step-down DC-DC converter according to an embodiment of the present invention.
  • a primary side circuit of a double step-down DC-DC converter may include a first full bridge circuit 100 including a capacitor 100-1 for double step down.
  • the double step-down DC-DC converter according to the embodiment of the present invention may further include a capacitor 100-1 in addition to the primary circuit.
  • the capacitor 100-1 additionally implemented in the primary side circuit may be expressed by the term double step-down capacitor.
  • the input voltage V in and the first switch 110 are connected in series, and the first switch 110 and the first full bridge circuit are provided. 100 may be connected in series.
  • the first switch 110 may be located between the input voltage V in and the primary switch stage of the transformer.
  • the first full bridge circuit 100 included in the primary side circuit includes the second switch 100-2 to the fourth switch 100-4 and the double step-down capacitor 100-1 according to the embodiment of the present invention. can do.
  • the double step-down capacitor 100-1 may be implemented on the high side of the first leg (or the first leg) 103 of the first full bridge circuit 100.
  • the third switch 100-3 On the lower side of the first leg 103, the third switch 100-3, on the upper side of the second leg 106 (or the second leg) of the second switch 100-2, the second leg 106
  • the fourth switch 100-4 may be implemented at the lower side.
  • the first inductor 120 and the first transformer coil 109 may be connected to an output terminal of the first full bridge circuit 100.
  • the secondary side circuit of the double step-down DC-DC converter includes a second full bridge circuit 150, and the second full bridge circuit 150 includes the first diode 150-1 to the fourth diode 150-4. It may include.
  • the second full bridge circuit 150 includes a first diode 150-1 above the first leg 153 (or a third leg) and a third diode 150-3 below the first leg 153.
  • the second diode 150-2 may be disposed above the second leg 156 (or the fourth leg), and the fourth diode 150-4 may be implemented below the second leg 156.
  • Current induced from the first transformer coil of the output terminal of the first full bridge circuit 100 may flow to the second full bridge circuit 150.
  • the second full bridge circuit 150 may be connected in series with the second inductor 160, and the second inductor 160 may be connected in series with the parallel circuit including the capacitor 165 and the output load 170.
  • Table 1 below shows the values of circuit elements and input voltage (V in ), output voltage (V o ), turns ratio (N 1 : N 2 ), and double step-down capacitor (C i ) that can be used in a double step-down DC-DC converter. shows the switching frequency (f s), the output power (P o), the first inductor (L lk), the second inductor (L o) and the like.
  • the following figures are just one example, and values of other circuit elements and input voltages, output voltages, and turns ratios may be used.
  • the double step-down DC-DC converter may operate based on four operating modes (first to fourth operating modes) according to the complementary operation of the first switch 110 to the fourth switch 100-4. have.
  • the voltage or current may have a phase difference of 180 degrees between each leg.
  • the double step-down DC-DC converter may include a primary side circuit and a secondary side circuit for voltage converting, and the primary side circuit may include a first full bridge circuit 100 connected in series with the first switch 110.
  • the first full bridge circuit 100 may include a first leg 103 and a second leg 106 connected in parallel, and an input voltage line connecting the first leg 103 and the second leg 106.
  • the double step-down capacitor 100-1 and the third switch 100-3 are implemented on the first leg 103, and the second switch 100-2 and the fourth switch 100-on the second leg 106. 4) is implemented, the input voltage line is a first point between the double step-down capacitor (100-1) and the third switch (100-3) and between the second switch (100-2) and the fourth switch (100-4) A second point of may be connected.
  • the first inductor 120 and the first transformer coil 109 may be implemented on the input voltage line.
  • the secondary circuit includes a second full bridge circuit 150 and a second inductor connected in series with the second full bridge circuit 150 in which the second transformer coil 159 receives a voltage from the first transformer coil 109. And a parallel circuit including a capacitor 165 and an output load 170 connected in series with the 160 and the inductor.
  • the second full bridge circuit 150 may include an output voltage line connecting the third leg 153 and the fourth leg 156 and the third leg 153 and the fourth leg 156 connected in parallel.
  • the first diode 150-1 and the third diode 150-3 are implemented on the third leg 153, and the second diode 150-2 and the fourth diode 150-are formed on the fourth leg 156. 4) is implemented, and the output voltage line is between the first point between the first diode 150-1 and the third diode 150-3 and between the second diode 150-2 and the fourth diode 150-4.
  • the second transformer coil 159 may be implemented by connecting a second point of the circuit and on an output voltage line.
  • FIGS. 2A and 2B are conceptual views illustrating an operation mode of a double step-down DC-DC converter according to an embodiment of the present invention.
  • a first operating mode and a second operating mode of a double step-down DC-DC converter are disclosed.
  • the first switch 110 and the fourth switch 100-4 may be turned on in the first operation mode of the dual step-down DC-DC converter.
  • the double step-down capacitor 100-1 of the first full bridge circuit 100 may be charged. Electrical energy charged in the double step down capacitor 100-1 may also be transmitted as an output of the double step down DC-DC converter.
  • the double step-down capacitor 100-1 may be continuously charged by the input voltage V in .
  • the voltage applied to the double step-down capacitor 100-1 and the voltage of the primary side of the transformer may be about half of the input voltage V in .
  • the current flows on the primary circuit 110 in the first switch 110, the double step-down capacitor 100-1, the first inductor 120, the primary transformer coil 109, and the fourth switch 100-. 4) can flow through.
  • a current induced through the secondary transformer coil 159 may flow through the first diode 150-1 and the second inductor 160 to the output load 170 on the secondary circuit.
  • the voltage applied to the output load 170 may be an output voltage V o .
  • the first switch 110 may be turned off and the fourth switch 100-4 may be turned on.
  • the input voltage V in may not be supplied.
  • current is refluxed through the body diodes of the fourth switch 100-4 and the third switch 100-3 based on the electrical energy stored in the leakage inductor 120 and the output inductor 160 of the transformer. Can be.
  • current flows through the body diodes of the first inductor 120, the primary transformer coil 109, the fourth switch 100-4, and the third switch 100-3 on the primary circuit.
  • a current induced through the secondary transformer coil 159 may flow to the output load 170 through the first diode 150-1 and the second inductor 160 on the secondary circuit. .
  • the voltage of the transformer is "0 (V)" and energy stored in the output inductor (second inductor 160) on the secondary circuit may be transferred to the output load 170.
  • 3A and 3B are conceptual views illustrating an operation mode of a double step-down DC-DC converter according to an embodiment of the present invention.
  • a third operation mode and a fourth operation mode of the double step-down DC-DC converter are disclosed.
  • the third operation mode and the fourth operation mode may be transmitted after the first operation mode and the second operation mode.
  • the second switch 100-2 may be turned on and the fourth switch 100-4 may be turned off in the third operation mode of the double step-down DC-DC converter.
  • electrical energy stored in the double step-down capacitor 100-1 may be transferred to the output load through the secondary transformer coil 159 of the double step-down DC-DC converter through the primary transformer coil 109.
  • the magnitude of the voltage of the primary transformer coil 109 may be half the magnitude of the input voltage V in .
  • current may flow through the dual competing capacitor 100-1, the second switch 100-2, the first inductor 120, and the primary transformer coil 109 on the primary circuit.
  • the second inductor 160, the output load 170, the third diode 150-3, the secondary transformer coil 159, and the second diode 150-2 are disposed on the secondary circuit. Current can flow through it.
  • the second switch 100-2 may be turned off and the fourth switch 100-4 may be turned on in the fourth operation mode of the double step-down DC-DC converter.
  • the electricity stored in the first inductor 120 and the second inductor 160 is the same as in the second operation mode.
  • the current generated based on the energy may be refluxed through the body diodes of the third switch 150-3 and the fourth switch 150-4.
  • current may flow through the first inductor 120, the third switch 100-3, the fourth switch 100-4, and the primary transformer coil 109 on the primary circuit.
  • the second inductor 160, the output load 170, the third diode 150-3, the secondary transformer coil 159, and the second diode 150-2 are disposed on the secondary circuit. Current can flow through it.
  • the double step-down capacitor 100-1 may be charged in the first operating mode and discharged in the third operating mode.
  • the transformer saturation problem can be prevented based on the charge balance condition of the double step-down capacitor 100-1.
  • the voltage gain of the double step-down DC-DC converter may be obtained by Equation 1 below by the voltage-second balance condition of the output inductor 160.
  • V Ci represents the voltage of the double step-down capacitor C i
  • n represents the turn ratio of the transformer (transformer).
  • D is the ratio of the switch
  • T s is the switching period.
  • the switch voltage stress of the converter can be improved as compared with the conventional full bridge circuit.
  • the switch voltage stress of the DC-DC converter may be reduced by reducing the voltage applied to the switches 110 and 100-3 100-4 to half of the input voltage based on the double step-down capacitor 100-1.
  • the voltage applied to the coil of the transformer drops in half compared to the conventional full bridge circuit, thereby reducing the core loss of the transformer and the charge of the double step down capacitor 100-1. Saturation of the transformer can be prevented based on the balancing conditions.
  • Figure 4 is a graph of the current flowing in the device or the voltage across the device of the double step-down DC-DC converter according to the embodiment of the present invention.
  • the double step-down DC A graph is disclosed for the current flowing through the device of a DC converter or the voltage across the device of a double step-down DC-DC converter.
  • voltages v s1 , v s3 , and v s4 applied to each of the first switch 110, the third switch 100-3, and the fourth switch 100-4 range from 0 to V in / 2.
  • v TR is the voltage across the primary coil 109 of the transformer and can vary in units of + V in / 2-0--V in / 2. That is, damage of the transformer may be prevented by performing double step-down of voltage through the double step-down capacitor 100-1.
  • saturation of the transformer may be prevented by setting different ratios of the first switch 110, the second switch 100-2, the third switch 100-3, and the fourth switch 100-4. have.
  • v N is a voltage applied to the second leg 156 of the second full bridge circuit 150 and may be determined based on n (turn ratio of the transformer (transformer)) and the input voltage V in .
  • 5A to 5D are graphs showing voltages and efficiencies of a transformer according to an embodiment of the present invention.
  • 5A is an experimental waveform showing the voltage and current between the voltage (V TR ) and current (i TR ) of the primary transformer coil 109 of the transformer and the diode of the secondary circuit of the double step-down DC-DC converter.
  • V TR voltage
  • i TR current
  • the voltage v TR applied to the primary transformer coil 109 of the transformer may be 200 V. That is, the voltage v TR applied to the primary transformer coil 109 of the transformer may be confirmed by decreasing to half of the input voltage V in .
  • Figure 5b is a graph showing the efficiency of the double step-down DC-DC converter according to an embodiment of the present invention.
  • the maximum efficiency of the double step-down DC-DC converter is 95% at 750W.
  • 5C discloses the voltage between the switches.
  • the switch voltages V S1 and v S3 vary between 0 and +200 V.
  • the change in voltage (v S1 , v S3 ) between the switches is reduced by half and the switch voltage stress is improved.
  • 5D shows that when the ratios of the two switches are different, voltage unbalance is initiated. If the ratios of the two switches are different, the double step-down DC-DC converter can operate without saturation problems.
  • FIG. 6 is a conceptual diagram illustrating a double step-down DC-DC converter device according to an embodiment of the present invention.
  • the double step-down DC-DC converter device includes a double step-down DC-DC converter circuit 600, an operation mode determiner 610, a switch controller 620, an output voltage setting unit 630, and a switch.
  • the fertilization rate determination unit 640 and the processor 650 may be included.
  • the double step-down DC-DC converter circuit unit 600 may include a primary side circuit and a secondary side circuit for the double step-down DC-DC converting operation.
  • the primary circuit of the double step-down DC-DC converter may include a first full bridge circuit 100 including the double step-down capacitor 100-1.
  • the input voltage V in and the first switch 110 are connected in series, and the first switch S1 110 and the first full bridge circuit 100 are connected to each other. Can be connected in series.
  • the first full bridge circuit 100 included in the primary side circuit includes the second switch 100-2 to the fourth switch 100-4 and the double step-down capacitor 100-1 according to the embodiment of the present invention. can do.
  • the double step-down capacitor 100-1 may be implemented above the first leg of the first full bridge circuit 100.
  • the third switch 100-3 On the lower side of the first leg 103, the third switch 100-3, on the low side of the second leg 106, on the low side of the second switch 100-2, and on the lower side of the second leg 106.
  • the fourth switch 100-4 may be implemented.
  • the first inductor 120 and the first transformer coil 109 may be connected to an output terminal of the first full bridge circuit 100.
  • the second full bridge circuit 150 may include first to fourth diodes 150-1 to 150-4.
  • the first diode 150-1 is disposed above the first leg 153
  • the third diode 150-3 is disposed below the first leg 153
  • the second leg 156 is disposed above the first leg 153.
  • a current induced from the first transformer coil 109 of the output terminal of the first full bridge circuit 100 may flow.
  • the second full bridge circuit 150 may be connected in series with the second inductor 160, and the second inductor 160 may be connected in series with the parallel circuit including the capacitor 165 and the output load 170.
  • the operation mode determiner 610 determines one operation mode among the first to fourth operation modes in the double step-down DC-DC converter, and controls the first to fourth switches according to the operation mode by the switch controller. I can order it.
  • the switch controller 620 may include the first switch 110, the second switch 100-2, the third switch 100-3, and the fourth switch 100-4 included in the double step-down DC-DC converter circuit. It can be implemented to control the switching operation of.
  • the switch controller may set the first switch 110 and the fourth switch 100-4 to turn on in the first operation mode, and turn off the first switch 110 in the second operation mode.
  • the fourth switch 100-4 is set to the turn on state, and in the third operation mode, the second switch 100-2 is turned on and the fourth switch 100-4 is set to the turn off state.
  • the second switch 100-2 may be turned off and the fourth switch 100-4 may be implemented to be turned on.
  • the output voltage setting unit 630 may be implemented to determine the output voltage V o of the double step-down DC-DC converter.
  • the output voltage V o may be determined based on the application rate and the turn ratio of the transformer.
  • the output voltage setting unit may set the output voltage V o based on the ratio of the ratio and the turn ratio of the transformer.
  • the switch ratio determining unit 640 may be implemented to determine a switch ratio for outputting the output voltage Vo set by the output voltage setting unit in the double step-down DC-DC converter.
  • the processor 650 performs operations of the double step-down DC-DC converter circuit unit 600, the operation mode determiner 610, the switch controller 620, the output voltage setting unit 630, and the switch ratio determining unit 640. It can be implemented to control.
  • Such a DC-DC converting method may be implemented in the form of program instructions that may be implemented as an application or executed through various computer components, and recorded in a computer-readable recording medium.
  • the computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination.
  • the program instructions recorded on the computer-readable recording medium are those specially designed and configured for the present invention, and may be known and available to those skilled in the computer software arts.
  • Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, and magneto-optical media such as floptical disks. media), and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like.
  • Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
  • the hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

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  • Dc-Dc Converters (AREA)

Abstract

La présente invention concerne un procédé de conversion c.c.-c.c., un appareil de conversion c.c.-c.c. et un circuit de conversion c.c.-c.c. Un procédé de conversion c.c.-c.c. abaisseur double peut comprendre les étapes suivantes : un convertisseur c.c.-c.c. abaisseur double reçoit une première tension ; et le convertisseur c.c.-c.c. abaisseur double convertit la première tension en une seconde tension sur la base d'une pluralité de modes de fonctionnement, le convertisseur c.c.-c.c. abaisseur double comprenant un circuit primaire et un circuit secondaire de conversion de tension, le circuit primaire comprenant un premier circuit en pont complet connecté en série à un premier commutateur, et le premier circuit en pont complet comprenant une première branche et une seconde branche connectées en parallèle et un fil de pression d'entrée connectant la première branche et la seconde branche, un condensateur abaisseur double et un troisième commutateur étant mis en œuvre sur la première branche, et un deuxième commutateur et un quatrième commutateur pouvant être mis en œuvre sur la seconde branche.
PCT/KR2015/013443 2014-12-16 2015-12-09 Procédé de conversion c.c.-c.c., appareil de conversion c.c.-c.c. et circuit de conversion c.c.-c.c. WO2016099071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0181830 2014-12-16
KR1020140181830A KR101632122B1 (ko) 2014-12-16 2014-12-16 Dc-dc 컨버팅 방법, dc-dc 컨버팅 장치 및 dc-dc 컨버팅 회로

Publications (1)

Publication Number Publication Date
WO2016099071A1 true WO2016099071A1 (fr) 2016-06-23

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PCT/KR2015/013443 WO2016099071A1 (fr) 2014-12-16 2015-12-09 Procédé de conversion c.c.-c.c., appareil de conversion c.c.-c.c. et circuit de conversion c.c.-c.c.

Country Status (2)

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KR (1) KR101632122B1 (fr)
WO (1) WO2016099071A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007209059A (ja) * 2006-01-31 2007-08-16 Fuji Electric Systems Co Ltd Ｄｃ−ｄｃコンバータ
JP2009171752A (ja) * 2008-01-17 2009-07-30 Toyota Industries Corp 電源回路
US20130314950A1 (en) * 2011-02-03 2013-11-28 Robert Bosch Gmbh Push-pull converter and modulation method for controlling a push-pull converter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7230405B2 (en) * 2004-10-26 2007-06-12 Delta Electronics, Inc. Non-isolated power conversion system having multiple switching power converters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007209059A (ja) * 2006-01-31 2007-08-16 Fuji Electric Systems Co Ltd Ｄｃ−ｄｃコンバータ
JP2009171752A (ja) * 2008-01-17 2009-07-30 Toyota Industries Corp 電源回路
US20130314950A1 (en) * 2011-02-03 2013-11-28 Robert Bosch Gmbh Push-pull converter and modulation method for controlling a push-pull converter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GU, BIN ET AL.: "Hybrid-Switching Full-Bridge DC-DC Converter with Minimal Voltage Stress of Bridge Rectifier, Reduced Circulating Losses, and Filter Requirement for Electric Vehicle Battery Chargers", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 28, no. 3, March 2013 (2013-03-01), pages 1132 - 1144, ISSN: 0885-9993 *
JEONG, SEONG YONG ET AL.: "Two-phase Double Step-down DC-DC Converter Using Coupled Inductor", PROCEEDINGS OF JOURNAL OF POWER EL]ECTRONICS 2014 SUMMER CONFERENCE, July 2014 (2014-07-01), pages 159 - 160 *

Also Published As

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