Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • 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
  • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
  • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M3/33561—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
• • 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
  • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
  • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• • 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
  • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
  • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M3/33507—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
  • H02M3/33523—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
• • 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
  • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
  • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M3/33569—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
  • H02M3/33576—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
  • H02M3/33584—Bidirectional converters
• • 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
  • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
  • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
  • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
  • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
  • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
  • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
  • H02M3/1586—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved

Definitions

• the present invention relates to the field of converters for continuous signals into continuous DC or DC signals.
• the present invention more particularly relates to a multi-output power conversion circuit with phase shift control or "shift phase.
• the invention can find its application in multi-voltage electrical networks such as those embedded in the transport means, particularly in aeronautics, automotive or rail.These networks allow to supply different devices requiring different DC voltages from a source of DC voltage.
• An object of the invention is in particular to correct one or more of the disadvantages of the prior art by proposing a solution making it possible to obtain, from a source of DC voltage, several DC voltage sources, each of which can be regulated independently of each other.
• the activity of each of the output voltage sources must have a minimum impact on that of the neighboring outputs.
• the subject of the invention is a phase shift control or "phase shift" multi-output energy conversion circuit receiving a DC voltage input and supplying a plurality of DC voltages comprising a transformer having an input and a plurality of outputs, said input being connected to an inverter comprising at least two switches and configured to convert a DC voltage to an AC voltage and each output being connected to a controlled rectifier configured to convert an AC voltage to a DC voltage, each controlled rectifier comprising a magnetic storage inductor connected to an AC-to-DC converter comprising at least two switches, the energy conversion circuit further comprising a control module configured to generate phase-shifted control signals arranged to drive the switching of the switches inverters and controlled rectifiers, said control module being also configured to vary the phase difference between the control signals of the power switches of the inverter and those of each controlled rectifier in order to adjust the amplitude of the output voltage of each controlled rectifier independently of each other.
• the input of the transformer is not connected to a magnetic storage inductor in order to have outputs totally independent of each other.
• the inverter is made with a capacitive half-bridge structure.
• the inverter is made with a complete bridge structure.
• at least one controlled rectifier is produced with a capacitive half-bridge structure.
• At least one controlled rectifier is made with a complete bridge structure.
• control block of at least one controlled rectifier comprises an input on which is applied a signal making it possible to form the phase difference between the control signals of the switches of the inverter and those of said controlled rectifier.
• At least one secondary controlled circuit comprises a filtering capacity.
• the invention also relates to a multi-voltage electrical network comprising a phase-shift controlled multi-output energy conversion circuit as described above and at least one DC voltage source, said conversion circuit being connected to its input. to said voltage source and supplying across its different outputs the different voltages of the network.
• the subject of the invention is also a method for manufacturing such a phase-shift-controlled multi-output energy conversion circuit, characterized in that it includes a step of designing said circuit including a step of optimizing the value.
• a magnetic storage inductor said dimensioning step comprising:
• a step of defining a phase shift range for which the output current of said conversion circuit is a substantially linear function of the phase shift a step of reducing the width of said phase shift range so as to reduce the current in the switches when switching them to a value close to zero
• FIG. 1 represents an exemplary embodiment of a phase-shift controlled multi-output energy conversion circuit according to the invention
• FIG. 2 represents a particular embodiment of a phase-shift controlled multi-output energy conversion circuit according to the invention
• FIG. 3 represents, by timing diagrams, an example of control signals for the circuit of FIG. 2;
• FIG. 4 shows an example of the evolution of the average current output of the multi output converter relative to the phase difference between the inverter and a controlled rectifier
• FIG. 1 schematically represents an exemplary embodiment of a phase-shift or phase shift multi-output energy conversion circuit according to the English terminology.
• the circuit may include a transformer 12 comprising an input having at least one primary winding and a plurality of outputs having at least one secondary winding.
• the transformer 12 may be a single-phase transformer, three-phase or generally polyphase. In the case of a three-phase transformer 12 and more generally a polyphase transformer, the input and the output of this transformer 12 has several windings connected to each other according to different arrangements.
• the input of the transformer 12 can be connected to an inverter 1 1 converting a DC voltage Ve to an AC voltage.
• the inverter 1 1 can be produced using a power switch structure, such as insulated gate bipolar transistors (or IGBTs for Insulated Gate Bipolar Transistors) or metal oxide semiconductor MOS transistors, which are bridge.
• the inverter 1 1 can be made with a capacitive half-bridge as shown in FIG. 2. According to alternative embodiments, the inverter 1 1 can be made with a complete bridge structure, with at least two arms.
• Each output of the transformer 12 may be connected to a controlled rectifier 13 converting the AC voltage at the output of the transformer 12 into a DC voltage Vsi, VS 2 .. .VSN. Between each controlled rectifier 13 and each output of the transformer 12 is connected, in series, a magnetic storage inductance Li, L 2 , L N.
• the controlled rectifier 13 can be realized with a structure of power switches, such as insulated gate bipolar transistors (or IGBTs for Insulated Gate Bipolar Transistor) or MOS transistors for metal oxide semiconductor, mounted in bridge.
• the controlled rectifier 13 can be realized with a capacitive half bridge, a complete bridge structure, with at least two arms or any equivalent means.
• Each of the inverters 1 1 and controlled rectifier 13 comprises at least two power switches.
• the multi-output energy conversion circuit may comprise at least one control module (see FIG. 2) configured to generate phase-shifted control signals arranged to control the switching of these switches.
• This control module may be of the pulse width modulation type in order to vary the cycle ratio of the control signals.
• control signals are generated with a cycle ratio substantially equal to 50%.
• control module 25 controlling these two circuits may for example comprise an input on which a voltage is applied whose value allows defining said phase shift.
• the control module 25 may for example be made by a controller, a microprocessor, a device comprising various logic and comparator circuits, a dedicated integrated circuit (or ASIC for Application-Specific Integrated Circuit) or any other means. equivalent.
• At least one controlled rectifier may comprise a filter capacitor Ci, C 2 , CN in order to smooth the signal at the output of said controlled rectifier 1 3.
• the fact of placing a magnetic storage inductor at the level of the controlled rectifiers 1 3 and having no inductance at the primary circuit makes it possible to have secondary circuits totally independent of one another.
• the voltage across the input of the transformer 1 2 can thus be distributed to the different secondary windings and create different voltage sources. These different sources can be transformed, thanks to the various control modules, to adapt them to the desired voltage and to supply different loads.
• FIG 2 shows a particular embodiment of the invention.
• the inverter 1 1 comprises a DC / AC converter made using a capacitive half-bridge.
• Each switch comprises a gate insulated bipolar transistor in parallel with a freewheeling diode.
• This converter converts a DC voltage Ve into an AC voltage which supplies the input of a transformer 1 2 muiti outputs (which, in the example of Figure 2, given as non-limiting, has three outputs).
• Each circuit connected at the output of the transformer 1 2 comprises an inductance Li, L 2 , L 3 of magnetic storage connected in series with a AC / DC converter 13 formed using full bridge switches.
• each switch may comprise an insulated gate bipolar transistor in parallel with a freewheeling diode.
• Each AC / DC converter 13 is connected to a control module 25 configured to drive switching of the switches of said converter.
• Each control module 25 is also connected to the DC / AC converter 1 1 in order to control the switching of these switches.
• Each control module 25 makes it possible to define the phase difference between the control signals of the inverter 1 1 and of each controlled rectifier 13.
• Each control module 25 is configured to vary the phase difference between the control signals of the power switches of the inverter 1 1 and those of each controlled rectifier 13 in order to adjust the amplitude of the output voltage of each controlled rectifier. 13 independently of each other.
• the control module could generate a phase shift between the control signals of the switches of the two arms.
• each output of the multi-output energy conversion circuit comprises a filtering capacitor Ci, C 2 , C 3 connected across the converter 13 and configured to filter the output voltages of said converter 13.
• At least one control module is configured to:
• FIG. 25 is configured to allow to vary the phase between the control signals of the power switches of the inverter 1 1 and a controlled rectifier 13 and thus adjust the amplitude of the output voltage of the controlled rectifier 13 managed by said control module 25.
• the phase shift applied to the control signals of the switches of the inverter 1 1 and the controlled rectifier 13 it is possible to realize either a voltage booster circuit or a voltage attenuator circuit.
• the same circuit can thus be used to perform both functions.
• FIG. 3 shows examples of control signals for controlling the switches of the controlled rectifiers 13 and of the inverter 1 1 of the circuit of FIG. 2 and providing the phase-shift control of each output of the conversion circuit of FIG. multi-output energy.
• each of the signals ⁇ _ ⁇ 0, IP 1, I_PN has a duty ratio of 50%.
• the signals l_P0n, l_P1 n, l_PNn are complementary to the signals l_P0, l_P1, I_PN at dead times 5t near. In a known manner, these dead times make it possible to take into account the switching time of the power switches and thus avoid short circuits.
• the signals of the first two chronograms 1_P0 and 1_P0n correspond to the control of the inverter 1 1. They make it possible to define the phase reference.
• the 2N signals of the following timing diagrams IP 1 and I_P1n, l_P2 and l_P2n, I_PN and l_PNn correspond to the control signals of the switches of the controlled rectifiers 13 of the secondary. These signals make it possible to define the phase shift ⁇ - ⁇ , ⁇ 2 ,..., ⁇ between the inverter 1 1 and each controlled rectifier 1 3.
• the conversion structure with phase shift control or "phase shift" allows the realization of multi-output converter with a single primary circuit and a single transformer.
• Each of the secondary circuits can be regulated independently of one another and on different ground references.
• the invention can find its application in multi-voltage electrical networks. These networks can, for example, be embedded in land, air and / or maritime transport means.
• the multi-voltage electrical network may comprise at least one DC voltage source connected at the input of a phase-shift controlled multi-output energy conversion circuit as described above, the different voltages supplying said multi-voltage network being found again. at the terminals of said conversion circuit.
• a method for optimizing the value of the magnetic storage inductance L of a controlled rectifier 13 will be presented.
• FIG. 4 represents the shape of the average current Is at the output of a controlled rectifier 13 as a function of the phase shift ⁇ applied between the control signals of the switches of said rectifier 13 and those of the inverter 1 1.
• the graphical representation of this current is in the form of a sinusoid.
• a range of phase variation or operating range is thus chosen, making it possible to have a substantially linear variation of the current as a function of the phase difference applied between the inverter 1 1 and the controlled rectifier 13.
• the fact of setting the operating range allows to set a value of the inductance.
• FIG. 5 illustrates the shape of the current at a switch at the time of switching of the latter as a function of the phase for different values ⁇ , ⁇ 2 , ⁇ 3 of the phase shift ⁇ applied between the inverter 1 1 and the controlled rectifier 13. It is noted that when the value of the phase shift between the control signals of the switches of the inverter 1 1 and those of the controlled rectifier 13 is modified, the value of the peak of current and the maximum value of this current are also modified. is higher or lower. Thus, when the switch will switch, it will interrupt a higher or lower current following the applied phase shift. In order to reduce the current in the switches at the moment of switching, the phase shift range is reduced.
• the second step of the optimization is to reduce the value of the width of the operating range so that the current at the terminals of the switches is close to zero at the time of the switching of the latter to perform a so-called soft switching or ZCS for Zero Current Switching according to the Anglo-Saxon terminology.
• the next step will be to deduce from this range - using conventional formulas known to those skilled in the art - the value of the magnetic storage inductance L.
• the fact of using a degraded inductance value L relative to the case where an operating range of 90 ° is covered makes it possible to be in an area where the output current is a substantially linear function of the phase shift and perform smooth switching.
• the fact that the value of the inductance L is reduced makes it possible to reduce the number of turns of the latter and therefore the losses in said inductance.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Dc-Dc Converters (AREA)
• Inverter Devices (AREA)
• Rectifiers (AREA)

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• 2013
  • 2013-12-31 FR FR1303118A patent/FR3016096B1/fr active Active
• 2014
  • 2014-12-29 US US15/107,429 patent/US10044279B2/en not_active Expired - Fee Related
  • 2014-12-29 EP EP14820897.8A patent/EP3090482A2/de not_active Withdrawn
  • 2014-12-29 WO PCT/EP2014/079361 patent/WO2015101594A2/fr active Application Filing

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