WO2007048277A1 - Alimentation a decoupage synchrone a fronts multiples et son controleur - Google Patents

Alimentation a decoupage synchrone a fronts multiples et son controleur Download PDF

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Publication number
WO2007048277A1
WO2007048277A1 PCT/CN2005/001789 CN2005001789W WO2007048277A1 WO 2007048277 A1 WO2007048277 A1 WO 2007048277A1 CN 2005001789 W CN2005001789 W CN 2005001789W WO 2007048277 A1 WO2007048277 A1 WO 2007048277A1
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WIPO (PCT)
Prior art keywords
switching
switch
edge
power
unit
Prior art date
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PCT/CN2005/001789
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English (en)
Chinese (zh)
Inventor
Weilun Chen
Jun Chen
Original Assignee
Weilun Chen
Jun Chen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Weilun Chen, Jun Chen filed Critical Weilun Chen
Priority to PCT/CN2005/001789 priority Critical patent/WO2007048277A1/fr
Priority to CN2005800055906A priority patent/CN1922781B/zh
Publication of WO2007048277A1 publication Critical patent/WO2007048277A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
    • H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal 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 in a biphase or polyphase circuit arrangement

Definitions

  • the invention relates to a switching power supply and a controller thereof, in particular to a power supply circuit for a cylinder switching power supply, a switching power supply for improving power conversion efficiency, and more particularly to a multilateral edge synchronous switching power supply and a controller thereof.
  • FIG. 1 is a circuit diagram of a conventional switching power supply including an AC rectifying unit, a power factor correcting unit, a power switch converting unit, and a DC rectifying unit.
  • the existing complete switching power supply is at least four levels:
  • the first stage is an AC rectification input unit: converting AC to unipolar DC;
  • the second stage is the power factor correction unit: During the working period of the power factor correction controller, the monopolar direct current is converted into a stable high voltage direct current, and the controller controls the circuit switch only to adjust the width of the output drive pulse;
  • the third stage is the power switch conversion unit: during the working period of the switching power supply pulse width controller, the high voltage DC isolation is transmitted to the DC output stage, and the controller controls the circuit switch only to adjust the width of the output driver ⁇ ;
  • the fourth stage is the DC output unit: the high-frequency AC rectification output after the transformation is completed, thereby completing the complete power conversion cycle of the switching power supply.
  • the technology of the existing controller is only to generate a modulated pulse with a controllable pulse width in order to complete a specified single function, and does not take information such as the front and rear edges of the pulse and the synchronization relationship of the edges as a controllable factor, and thus cannot further
  • the geochemical power circuit reduces the power components in the circuit and reduces the workload of some power components.
  • the controller is used too much, and the total number of circuit components is both complicated and complicated, which limits the reliability and conversion efficiency of the power supply.
  • the reason is: The more controllers in the circuit, not only increase the power conversion cost, but also increase The failure rate of circuit operation; the more power components in the circuit, not only the switching loss and conduction loss of the switching power supply itself will increase, but also the work failure rate naturally increases. Summary of the invention In order to achieve the specifications when working alone at all levels of the guaranteed and superior switching power supply, the switching power supply circuit is reduced, the power components and controllers in the circuit are reduced, and the power conversion efficiency, reliability and reliability are significantly improved. Practicality, the present invention proposes a multilateral edge synchronous switching power supply and a method of operating the same.
  • the invention provides a multilateral edge synchronous switching power supply, comprising:
  • a switching conversion unit configured to convert alternating current into high voltage direct current, and convert the high voltage direct current into high voltage alternating current
  • a DC output unit configured to rectify the high voltage alternating current and output the same
  • a multi-edge edge synchronization controller connected to the switch conversion unit and the DC output unit, detecting an operating state of the switching power supply, generating a temporal segment within the effective switching cycle, and generating a pulse width controllable
  • the edge synchronization timing controllable modulation pulse signal is used to control the operation of the switching unit.
  • the switch converting unit 201 includes: an alternating current power source, first and second unidirectional electronic devices, a storage inductor, a transducing transformer, a capacitor, first and second main switching devices, and first and second auxiliary switches Device; among them,
  • the first and second unidirectional electronic devices are connected in series, and the first and second main switching devices are connected in series, and an energy storage inductor and an alternating current power source are connected between their midpoints of the series, thereby forming a boost type Switching circuit to obtain high voltage direct current;
  • the first and second auxiliary switching devices are connected in series, and a transducing transformer is connected between the midpoint of the series and the midpoint of the first and second main switching devices in series, thereby forming a full bridge power transfer switch. a circuit to achieve isolated transmission of high voltage direct current;
  • the AC power source is coupled to the polygon edge synchronization controller 203 such that the operational state of the controller can be synchronized to the polarity change of the AC power source.
  • the switch conversion unit 301 is a single-phase half-bridge switch conversion unit, including: an AC power source, first and second unidirectional electronic devices, first and second capacitors, first and second main switching devices, energy storage inductors, Transducing transformer; wherein
  • the first and second unidirectional electronic devices are connected in series, and the first and second main switching devices are connected in series, and an energy storage inductor and an alternating current power source are connected between their midpoints of the series, thereby forming a boost type Switching circuit to obtain high voltage direct current;
  • the first and second capacitors are connected in series, and a transducing transformer is connected between the midpoint of the series and the midpoint of the series connection of the first and second main switching devices, thereby forming a half bridge power conversion switch circuit.
  • the AC power supply and the multiple edge connector synchronization controller 303 so that the controller can synchronize the operation state change of the polarity of the AC power supply.
  • the switch conversion unit 305 is a three-phase half-bridge transfer switch unit, including: first, second, and third alternating current power sources, first, second, and third energy storage inductors, first, second, and third transducers Transformer, first and second capacitors, first and second main switching devices, third and fourth main switching devices, fifth and sixth main switching devices;
  • the first and second main switching devices are connected in series at a midpoint, thereby forming a step-up switching circuit, thereby obtaining a high-voltage direct current of the first phase;
  • the third and fourth main switching devices are connected in series at a midpoint, thereby forming a step-up switching circuit, thereby obtaining a high voltage direct current of the second phase;
  • the second capacitor is connected in series, and a first transducing transformer is connected between the midpoint of the series connection and the midpoint of the first and second main switching devices, thereby forming a half bridge power conversion switch circuit to realize the first Isolation transmission of phase high voltage direct current
  • the first and second capacitors are connected in series, and a second transducing transformer is connected between the midpoint of the series and the midpoint of the series connection of the third and fourth main switching devices, thereby forming a half bridge power transfer switch. a circuit to achieve isolated transmission of the high voltage direct current of the second phase;
  • the first and second capacitors are connected in series, and a third transducing transformer is connected between the midpoint of the series and the midpoint of the fifth and sixth main switching devices in series, thereby forming a half bridge power transfer switch. a circuit to achieve isolated transmission of the high voltage direct current of the third phase;
  • the first, second, and third alternating current power sources are coupled to the multilateral edge synchronization controller 307 such that the operating state of the controller can be synchronized with the polarity change and phase change of the three-phase alternating current power source.
  • the multilateral edge synchronization controller includes:
  • the AC polarity detecting unit 401 is configured to provide information about size and polarity change of the AC power source;
  • the overload detecting unit 402 is configured to provide protection of the power carrying capacity;
  • the power factor detecting unit 403 is configured to provide an inverse of the power quality factor correction quality;
  • the DC output feedback detecting unit 404 is configured to provide closed loop feedback of the load power source;
  • Multiple edge sync timing generator unit 405, 401, the overload detection unit 402, the power factor detection unit 403, the DC output feedback detection unit 404 is connected to the AC polarity detection unit, and receive their signals, generating effective switching cycle Four temporal segments 506;
  • An AC polarity synchronizing switch and driving signal synthesizing and mapping unit 406 is configured to receive signals of the multi-edge sync timing generator unit, the AC polarity detecting unit 401, and the overload detecting unit 40 2 in parallel as an input signal.
  • the pulse width controllable and the edge synchronization timing controllable modulation pulse signal required for the operation of the main switch and the auxiliary switch are generated.
  • the multilateral edge timing generator unit includes: a main switch timing 501 in an active switching period and an auxiliary switching timing 502 in an active switching period, a main switching synchronization trailing edge 503, a secondary switching synchronization leading edge 504, and a secondary switching synchronization trailing edge 505.
  • the effective switching period includes four temporal segments 506, including:
  • the main switch operating time segment is used for energy storage of the power factor correction circuit
  • the auxiliary switch working state segment is used for the first energy conversion of the power switch circuit while continuing the energy storage state of the power factor correction circuit;
  • the time switch segment of the main switch and the auxiliary switch are synchronously switched, and are used for the second energy conversion of the power switch circuit, and the power factor correction circuit is converted into the release state;
  • the state of the main switch and the auxiliary switch are all turned off, so that the energy conversion is controlled.
  • the first and second unidirectional electronic devices are diodes.
  • the above main switching device and auxiliary switching device are field effect transistors or Hanji transistors or insulated gate bipolar transistors or controllable bidirectional electronic switches.
  • the invention also provides a multilateral edge synchronization controller, configured to detect an operating state of the switching power supply, generate a temporal section in an effective switching period according to the working state, and generate a pulse width controllable and an edge synchronization timing controllable
  • the modulated pulse signal is used to control the operation of the switching unit in the switching power supply, and includes: an AC polarity detecting unit 401, an overload detecting unit 402, a power factor detecting unit 403, a DC output feedback detecting unit 404, and a multilateral edge synchronization timing generation.
  • the AC polarity detecting unit 401 is configured to provide information about the size and polarity of the AC power source;
  • An overload detecting unit 402 is configured to provide protection of a power carrying capacity;
  • the power factor detecting unit 403 is configured to provide feedback of the power quality factor correction quality; the DC output feedback detecting unit 4 (M, for providing closed-loop feedback of the load power source;
  • An AC polarity synchronizing switch and driving signal synthesizing and mapping unit 406 is configured to receive signals of the multi-edge sync timing generator unit, the AC polarity detecting unit 401, and the overload detecting unit 40 2 in parallel as an input signal.
  • the pulse width controllable and the edge synchronization timing controllable modulation pulse signal required for the operation of the main switch and the auxiliary switch are generated.
  • the edge timing generator unit is different from the working principle of all existing switching power supply controllers.
  • they only operate based on pulse width regulation, generally referred to as a pulse width controller, and the present invention Not only based on pulse width regulation, but also based on the pulse timing of FIG. 6 and the constraint relationship of pulse edges; in each active switching cycle, the main switch is generated by pressing the sequential temporal segments of T1, ⁇ 2, ⁇ 3, ⁇ 4 The output pulse of the auxiliary switch.
  • the multi-edge synchronous switching power supply and the multilateral edge synchronous controller are adopted, so that the number of circuit power components and controllers is significantly reduced, thereby not only significantly improving the present Inventing the cost performance of the power supply, but also effectively improving the power conversion efficiency and reliability.
  • FIG. 1 is a circuit diagram of a conventional switching power supply including an AC rectifying unit, a power factor correcting unit, a power switching converter unit, and a DC rectifying unit;
  • FIG. 2 is a circuit diagram of a switching power supply of the present invention
  • Figure 3 is a circuit diagram of the single-phase half-bridge switching power supply of the present invention.
  • Figure 3 is a circuit diagram of the three-phase half-bridge switching power supply of the present invention.
  • FIG. 4 is a block diagram showing the working principle of the polygon edge synchronization controller according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a multi-edge synchronization timing according to an embodiment of the present invention.
  • Figure 6 is a circuit diagram of the embodiment of Figure 2;
  • FIG. 7A to 7B are state diagrams showing the operation of the embodiment of Fig. 6; 8A to 8F are state diagrams showing the operation of the embodiment of Fig. 3A;
  • FIG. 9A through 9F are state diagrams showing the operation of the embodiment of Fig. 3B.
  • the switching power supply includes: a switch converting unit 201, configured to convert alternating current into high voltage direct current, and convert the high voltage direct current into high voltage alternating current; a direct current output unit 202, configured to rectify the high voltage alternating current and output; 203, the switching unit 201 and the DC output unit 202, and controls the switching unit 201 of the work.
  • the switch conversion unit 201 includes: an AC power source AC, first and second diodes D1, D2, a storage inductor L, a transducing transformer T1, a capacitor C, and first and second main switches SW1 and SW2. , first and second auxiliary switches SW3, SW4; wherein
  • the first and second diodes D1 and D2 are connected in series, and the first and second main switches SW1 and SW2 are connected in series, and an energy storage inductor L and an alternating current power source AC are connected between their midpoints of the series. Forming a step-up switching circuit to obtain high voltage direct current;
  • the first and second auxiliary switches SW3 and SW4 are connected in series, and a transducing transformer T1 is connected between a midpoint of the series and a midpoint of the first and second main switches SW1 and SW2.
  • Full-bridge power conversion switch circuit to achieve isolated transmission of high-voltage direct current;
  • the multilateral edge synchronization controller shown in FIG. 4 and FIG. 5 includes:
  • the AC polarity detecting unit 401 is configured to provide a size and polarity change information of the AC power source;
  • the overload detecting unit 402 is configured to provide protection of the power carrying capacity
  • the power factor detecting unit 403 is configured to provide feedback of the power quality factor correction quality;
  • the DC output feedback detecting unit 404 is configured to provide closed loop feedback of the load power source;
  • the multi-edge edge synchronization timing generator unit 405 is connected to the alternating current polarity detecting unit 401, the overload detecting unit 402, the power factor detecting unit 403, and the direct current output feedback detecting unit 404, and receives signals thereof to generate an effective switching period.
  • An AC polarity synchronizing switch and driving signal synthesizing and mapping unit 406 is configured to receive signals of the multi-edge sync timing generator unit, the AC polarity detecting unit 401, and the overload detecting unit 40 2 in parallel as an input signal.
  • the pulse width controllable and the edge synchronization timing controllable modulation pulse signal required for the operation of the main switch and the auxiliary switch are generated.
  • the multilateral edge timing generator unit includes: a main switch timing 501 in an active switching period and an auxiliary switching timing 502 in an active switching period, a main switch synchronization trailing edge 503, a secondary switch synchronization leading edge 504, and a secondary switching synchronization trailing edge 50 5 .
  • the four time segments 506 of the effective switching period include:
  • the main switch operating time segment is used for energy storage of the power factor correction circuit
  • the auxiliary switch working state segment is used for the first energy conversion of the power switch circuit while continuing the energy storage state of the power factor correction circuit;
  • the state switch segment of the main switch and the auxiliary switch are synchronously switched, and are used for the ⁇ secondary energy conversion of the power switch circuit, and the power factor correction circuit is converted into the release state;
  • the state of the main switch and the auxiliary switch are all turned off, so that the energy conversion is controlled.
  • the circuit diagram of the embodiment of Fig. 2 is driven by the multi-edge synchronous controller U1 to drive the eight operational timing states of the circuit.
  • Timing Mode 1 As shown in Figure 7A, the multi-edge synchronous controller U1 operates in the T1 transient phase of the effective switching period, called the "negative T1 state"; the power factor correction switching circuit consists of the diode D2, the storage inductor L, and the AC power supply AC. And the main switch SW2 is composed. The controller arbitration result outputs a pulse, making the main switch
  • the multi-edge synchronous controller U1 operates in the T2 state section of the effective switching period, which is called "negative T2 state";
  • the power factor correction switching circuit consists of diode D2, energy storage inductor L, AC power supply AC, and main switch SW2.
  • the power conversion switch circuit is composed of an auxiliary switch tube SW3, a transducing transformer T and a main switch tube SW2.
  • the controller arbitration result increases the output of a pulse, so that the auxiliary switch SW3 is turned on when the main switch SW2 is turned on; the main switch not only continues to operate in the energy storage state of the power factor correction, but also realizes the power factor correction function, and the current flow direction is as shown in the middle point.
  • the initial power conversion state is started together with the auxiliary switch, and the power conversion function is realized.
  • the current flow direction is shown by a solid line in the figure, and it can be seen that a beneficial and remarkable feature is the power transfer at this time.
  • the switching loss of the switching process is reduced by half compared to the existing power conversion switch circuit, because one of the switching transistors SW 2 in the power conversion switch circuit is already turned on before the switching circuit is turned on;
  • Timing State 3 See Figure 7C
  • the multi-edge synchronous controller U1 operates in the T 3 state phase of the effective switching period, called the "negative T3 state";
  • the power factor correction switching circuit consists of the diode D2 'storage inductor L, the AC power source AC, the main switch tube SW1 and The capacitor C1 is composed;
  • the power conversion switch circuit is composed of a main switch tube SW1, a transducing transformer T and an auxiliary switch tube SW4.
  • the controller arbitration result causes the main switch SW2 and the auxiliary switch SW3 to be synchronously turned off at the edge 503 after the main switch is synchronized, and at the same time, the main switch SW1 and the auxiliary switch SW4 are also turned on synchronously at the auxiliary switch synchronization leading edge 504;
  • Working in the energy state correction of the energy release state not only continue to achieve the power factor correction function, its current flow direction is shown in the dotted line.
  • the second power conversion state is started together with the auxiliary switch, and the power conversion function is realized again.
  • the current flow direction is shown by the solid line in the figure, and another useful and remarkable feature can be seen from this time.
  • the switch conduction loss of the power conversion switch process is reduced to zero compared to the switching conduction loss of the existing power conversion switch circuit, because the current and power factor correction circuit of the power conversion switch circuit flowing through the switch SW1 flows through the switch SW1
  • Timing state 4 As shown in Figure 7D, the multi-edge synchronous controller U1 operates in the T4 phase of the effective switching period, called the "negative T4 state"; the power factor correction switching circuit consists of the diode D2, the energy storage inductor! ⁇ , AC power supply AC, converter transformer T, auxiliary switch tube SW3 diode, and capacitor C1.
  • the controller arbitration result causes the main switch SW1 and the auxiliary switch SW4 to be synchronously turned off at 505 after the auxiliary switch is synchronized, and the switching unit continues to operate in the power factor corrected release state, and the current flow direction is as shown by the dashed line in the figure. , but the power conversion state ends.
  • the above four operating states are repeated in sequence until the polarity of the alternating current changes. At this time, the polarity of the alternating current appears to be negative at the LB1 end and positive at the L2 end.
  • Timing state 5 As shown in Fig. 7E, the multi-edge synchronous controller U1 operates in the T1 state segment of the effective switching period, which is called "positive T1 state"; the power factor correction switching circuit is composed of diode D1, energy storage inductor ⁇ AC power supply AC and The main switch tube SW1 is composed.
  • the controller arbitration result makes the main switch SW1 open, and realizes two functions of AC rectification and power factor correction; at this time, the main switch unit operates in the energy storage state of the power factor correction, and the current flow direction in the circuit is as shown by the dotted line in the figure.
  • Shown Timing state 6 As shown in Fig.
  • the multi-edge synchronous controller U1 operates in the T2 transient section of the effective switching period, which is called "positive ⁇ 2 state,";
  • the power factor correction switching circuit is composed of diode D1, energy storage inductor L, and AC power supply.
  • the AC and the main switch tube SW1 are composed;
  • the power switch circuit is composed of the main switch tube SW1, the transducing transformer T and the auxiliary switch tube SW4.
  • the controller arbitration result causes the auxiliary switch SW4 to be turned on when the main switch SW1 is turned on; the main switch continues to work.
  • Timing state 7 As shown in Fig. 7G, the multi-edge synchronous controller U1 operates in the T3 state segment of the effective switching period, which is called "positive T3 state"; the power factor correction switching circuit is composed of diode D1, energy storage inductor L, AC power supply AC The main switch tube SW2 and the capacitor C1 are composed; the power conversion switch circuit is composed of an auxiliary switch tube SW3, a transducing transformer T, and a main switch tube SW2.
  • the controller arbitration result causes the main switch SW1 to be turned off and the auxiliary switch SW4 to be turned off synchronously at 503 after the main switch is synchronized, while the main switch SW2 and the auxiliary switch SW3 are also turned on synchronously at the auxiliary switch synchronization leading edge 504.
  • the main switch operates in the release state of the power factor correction, and not only continues to implement the power factor correction function, but also the current flow direction is shown by the dashed line in the figure.
  • the second power conversion state is started together with the auxiliary switch, and the power conversion function is realized again.
  • the current flow direction is shown by the solid line in the figure, and another useful and remarkable feature can be seen from this time.
  • the switch conduction loss of the power conversion switch process is reduced to zero compared to the switching conduction loss of the existing power conversion switch circuit, because the current and power factor correction circuit of the power conversion switch circuit flowing through the switch SW1 flows through the switch SW2
  • the current is reversed at the opposite end; another beneficial feature is that the energy released by the power factor correction circuit is not the same as the existing power factor correction circuit.
  • the energy is first transferred to the storage capacitor, but directly Transferred to the power transfer switch circuit, thus greatly reducing the capacity requirements for the storage capacitor; the grounding reduces the cost and volume of the power supply of the present invention;
  • Timing state 8 As shown in Fig. 7H, the multi-edge synchronous controller U1 operates in the T4 state segment of the effective switching period, which is called "positive T4 state"; the power factor correction switching circuit is composed of diode D1, energy storage inductor L, AC power supply AC , the transformer transformer T, the diode of the auxiliary switch tube SW4, and the capacitor C1.
  • the controller arbitration result causes the main switch SW2 and the auxiliary switch SW3 to be turned off synchronously at 505 after the auxiliary switch is synchronized, and the switching unit continues to operate in the energy-corrected release state, and the current flow direction is as shown in the figure.
  • the dotted line is shown, but the power conversion state ends.
  • the above four operating states are repeated in sequence until the polarity of the alternating current changes. Then the circuit starts again from "Time Series 1: ".
  • the switch conversion unit 301 is a single-phase half-bridge switch conversion unit, including: an AC power supply, first and second diodes D1, D2, first and second capacitors Cl, C2, first and third 2 main switch SW1, SW2, energy storage inductor transducing transformer T1;
  • the first and second diodes D1 and D2 are connected in series, and the first and second main switches SW1 and SW2 are connected in series, and an energy storage inductor L and an alternating current power source AC are connected between their midpoints of the series. Forming a step-up switching circuit to obtain high voltage direct current;
  • the first and second capacitors C1 and C2 are connected in series, and a transducing transformer T1 is connected between the midpoint of the series connection and the midpoint of the first and second main switches SW1 and SW2, thereby forming a half.
  • Bridge power transfer switch circuit to achieve isolated transmission of high voltage direct current.
  • the multilateral edge synchronization controller is the same as above, as shown in FIGS.
  • the multilateral edge synchronization controller is connected to the AC power source AC to obtain polarity change information of the AC power source.
  • the driving of the six operational timing states of the circuit is effected by the multi-edge synchronization controller U1.
  • the difference from Embodiment 1 is that the "negative T1 state” and the “negative T2 state” in this embodiment are combined into one temporal segment and completed in the timing state 1; the "positive T1 state” and the “positive T2 state” are also For a tense segment, it is completed in the timing state 4; as shown in FIGS. 8A to 8F, it is a working state diagram of FIG. 3A.
  • Timing state 1 As shown in Figure 8A, the multi-edge synchronous controller U1 operates in the ⁇ -phase segment and the T2-phase segment of the effective switching cycle; the power factor correction switching circuit consists of the diode D2, the energy storage inductor L, the AC power source AC, and the main switch. SW2 is composed; the power conversion switch circuit is composed of a capacitor C1, a transducing transformer T and a main switch SW2.
  • the controller arbitration result makes the main switch SW2 open; the main switch not only realizes the power factor correction energy storage state, but also realizes the power factor correction function.
  • the current flow direction in the circuit is as shown by the dotted line in the figure, and the first time starts.
  • the power conversion state realizes the power conversion function, and the current flow direction thereof is shown by a solid line in the figure;
  • Timing State 2 See Figure B.
  • the M3 operates along the synchronous controller U1 in the T 3 state phase of the effective switching period, called the "negative T3 state"; the power factor correction switching circuit consists of the diode D2, the inductor L, and the AC power source AC.
  • the main switch tube SW1, the capacitor C1 and the capacitor C2 are composed; the power conversion switch circuit is composed of a main switch tube SW1, a transducing transformer T, and a capacitor C2.
  • the synchronous edge 503 is synchronously turned off, and at the same time, the main switch SW1 is also turned on synchronously at the auxiliary switch synchronization leading edge 504; the main switch operates in the power factor corrected release state, and not only continues to implement the power factor correction function, but also its current flow
  • the direction is shown by the dotted line in the figure.
  • the second power conversion state is started, and the power conversion function is realized again.
  • the current flow direction is shown by the solid line in the figure, and it can be seen again that a beneficial and remarkable feature is that the power factor correction circuit releases the
  • the energy is not the same as the existing power factor correction circuit.
  • the energy is first transferred to the storage capacitor, but directly transferred to the power conversion switch circuit, thus greatly reducing the capacity requirement for the storage capacitor;
  • Timing State 3 As shown in Figure 8C, the multi-edge synchronous controller U1 operates in the T4 transient phase of the effective switching period, called the "negative T4 state"; the power factor correction switching circuit consists of the diode D2, the storage inductor L, and the AC power supply AC. , Transducer transformer T, capacitor C2 and C1.
  • the controller arbitration result causes the main switch SW1 to be synchronously turned off at 505 after the auxiliary switch is synchronized, and the switching unit continues to operate in the power factor corrected release state, and the current flow direction is as shown by the dotted line in the figure, but the power conversion state End.
  • the above three operating states are repeated in sequence until the polarity of the alternating current changes. At this time, the polarity of the alternating current appears to be negative at the right end and positive at the left end.
  • Timing state 4 As shown in Fig. 8D, the multi-edge synchronous controller U1 operates in the T1 state segment and the ⁇ 2 phase segment of the effective switching period; the power factor correction switching circuit is composed of the diode D1, the inductor L, the AC power source AC, and the main switch tube SW1.
  • the power conversion switch circuit is composed of a main switch tube SW1, a transducing transformer T and a capacitor C2.
  • the controller arbitration result makes the main switch SW1 open; the main switch not only realizes the power factor correction energy storage state, but also realizes the power factor correction function.
  • the current flow direction in the circuit is as shown by the dotted line in the figure, and the first time starts.
  • the power conversion state realizes the power conversion function, and the current flow direction thereof is shown by a solid line in the figure;
  • Timing State 5 As shown in Figure 8E, the multi-edge synchronous controller U1 operates in the T3 transient phase of the effective switching period, called the "positive T3 state"; the power factor correction switching circuit consists of the diode D1, the inductor L, the AC power source AC, and the main The switch tube SW2 and the capacitor C1 are composed; the power conversion switch circuit is composed of a capacitor C1, a transducing transformer T, and a main switch tube SW2.
  • the controller arbitration result causes the main switch SW1 to be synchronously turned off at the edge 503 after the main switch is synchronized, while the main switch SW2 is also turned on synchronously at the auxiliary switch synchronization leading edge 504; the main switch operates in the power factor correction State, not only continue to achieve the power factor correction function, its current flow direction is shown in the dotted line in the figure. At the same time, the second power conversion state is started, and the power conversion function is realized again. The current flow direction is as shown by the solid line in the figure. From this, it can be seen that another beneficial and remarkable feature is that the power factor correction circuit is released. Energy of Rather than transferring the energy to the storage capacitor first, as in the existing power factor correction circuit, it is directly transferred to the power conversion switch circuit, thus greatly reducing the capacity requirement for the storage capacitor; The cost and volume of the power supply of the present invention;
  • Timing state 6 As shown in Fig. 8F, the multi-edge synchronous controller U1 operates in the T4 state segment of the effective switching period, which is called "positive T4 state,"; the power factor correction switching circuit is composed of diode D1, energy storage inductor L, and AC power supply. The AC, the transducing transformer T, the capacitor C2, and the capacitor C1 are composed.
  • the controller arbitration result causes the main switch SW2 to be synchronously turned off at the 505 after the auxiliary switch is synchronized, and the switching unit continues to operate in the power factor corrected release state.
  • the current flow direction is shown by the dashed line in the figure, but the power conversion state ends.
  • the switch conversion unit 305 is a three-phase half-bridge transfer switch unit, including: first, second, and third AC power sources Aca, Acb, ACc, first, second, and third inductors La, Lb, Lc, first, second and third transducing transformers Tla, T2a, T3a, first and second capacitors Cl, C2, first and second main switches SWla, SW2a, third and fourth main switches SWlb And the SW2b, the fifth and sixth main switches SWlc and SW2c, wherein the first AC power source ACa is connected in series with the first inductor La, and is connected to the first and second main switches SW1a and SW2a in series at a midpoint.
  • the SW2c is connected in series at a midpoint, thereby forming a step-up switching circuit, thereby obtaining a high-voltage direct current of the third phase;
  • the first and second capacitors C1 and C2 are connected in series, and at the midpoint of the series thereof 1 and the second main switch device SWla, SW2a are connected to the transducer transformer Tla between the midpoints of the series, thereby forming a half-bridge power conversion switch circuit to realize the isolated transmission of the high-voltage direct current of the first phase;
  • the first and second capacitors C1, C2 are connected in series, and the transducing transformer Tib is connected between the midpoint of the series connection of the third and fourth main switches SW1b, SW2b, thereby forming a half a bridge power transfer switch circuit for achieving isolated transmission of the high voltage direct current of the second phase;
  • the first and second capacitors C1, C2 are connected in series, and the transducing transformer Tlc is connected between the midpoint of the series and the midpoint of the fifth and sixth main switches SWlc, SW2c in series, thereby forming a half
  • the bridge power transfer switch circuit is used to realize the isolated transmission of the high voltage direct current of the third phase.
  • the polygon edge synchronization controller 307 is as shown in FIGS. 4 and 5.
  • Multi-edge synchronization controller The 307 is connected to the AC power sources Aca, Acb, and Acc to obtain information on changes in polarity and phase of the AC power source.
  • the driving of the 12 operational timing states of the circuit is effected by the polygon edge synchronization controller U1. Due to the relative symmetry of the three-phase power supply, only the A-phase power supply is described here to avoid a large amount of repeated text.
  • the present embodiment is identical to the second embodiment in the "negative state” and the “negative T2 state", which are combined into a temporal state and completed in the timing state 1; "positive T1 state” And the "positive state” also coincides with a tense segment, which is completed in the timing state 4; as shown in Figs. 9A to 9F.
  • Timing state 1 As shown in Fig. 9A, the multi-edge synchronous controller U1 operates in the T1 state segment and the T2 transient segment of the effective switching period; the power factor correction switching circuit is composed of diodes D2b, D2c, inductor La, phase A AC power source ACa and The main switch SW2a is composed of; the power conversion switch circuit is composed of a capacitor CI, an A-phase transducing transformer Tla and a main switch SW2a.
  • the controller arbitration result makes the main switch SW2a open; the main switch not only realizes the power factor correction energy storage state, but also realizes the power factor correction function.
  • the current flow direction in the circuit is as shown by the dotted line in the figure, and the first time starts.
  • the power conversion state realizes the power conversion function, and the current flow direction thereof is shown by a solid line in the figure;
  • Timing State 2 See Figure 9B, the multi-edge synchronous controller ⁇ operates in the T3 transient phase of the effective switching period, called the “negative ⁇ 3 state”; the power factor correction switching circuit is diode-D2b, D2c, inductor La, A-phase AC
  • the power supply ACa, the main switch SW1a, the capacitors C1 and C2 are composed; the power conversion switch circuit is composed of a main switch SWla, an A-phase AC power source Tla, and a capacitor C2.
  • the controller arbitration result causes the main switch SW2a to be synchronously turned off at the edge 503 after the main switch is synchronized, and at the same time the main switch SW1a is also turned on synchronously at the auxiliary switch synchronization leading edge 504; the main switch operates in the power factor corrected release state , not only continue to achieve the power factor correction function, its current flow direction is shown in the dotted line in the figure.
  • the second power conversion state is started, and the power conversion function is realized again.
  • the current flow direction is shown by the solid line in the figure, and it can be seen again that a beneficial and remarkable feature is the power factor correction circuit.
  • the energy is not the same as the existing power factor correction circuit. The energy is first transferred to the storage capacitor, but directly transferred to the power conversion switch circuit, thus greatly reducing the capacity requirement for the storage capacitor; The cost and volume of the power supply of the present invention;
  • Timing State 3 As shown in Figure 9C, the multi-edge synchronous controller U1 operates in the T4 transient phase of the effective switching period, called the "negative T4 state"; the power factor correction switching circuit is diode-D2b, D2c, inductive La, A-phase AC Power supply ACa, A-phase converter transformer Tla, capacitor C2 and C1.
  • the controller arbitration result causes the main switch SWla to be synchronously turned off at 505 after the auxiliary switch is synchronized, and the switching unit continues to work in the work.
  • the rate-corrected release state, the current flow direction is shown by the dotted line in the figure, but the power conversion state ends.
  • the above three operating states are repeated in sequence until the polarity of the alternating current changes. At this time, the polarity of the alternating current ACa appears to be negative at the right end and positive at the left end.
  • Timing state 4 As shown in Fig. 9D, the multi-edge synchronous controller U1 operates in the ⁇ -phase segment and the T2-phase segment of the effective switching cycle; the power factor correction switching circuit is composed of a diode Dlb, Die, an inductor La, an A-phase AC power source ACa, and The main switch SWla is composed of; the power conversion switch circuit is composed of a main switch SWla, an A-phase transducing transformer Tla and a capacitor C2.
  • the controller arbitration result makes the main switch SWla open; the main switch not only operates in the energy storage state of the power factor correction, but also realizes the power factor correction function.
  • the current flow direction in the circuit is as shown by the dotted line in the figure, and the first time starts.
  • the power conversion state realizes the power conversion function, and the current flow direction thereof is shown by a solid line in the figure;
  • Timing State 5 As shown in Figure 9E, the multi-edge synchronous controller U1 operates in the T3 transient phase of the effective switching period, called the "positive T3 state"; the power factor correction switching circuit is diode-connected by the diodes Dlb, Dlc, the inductor La, A.
  • the power supply ACa, the main switch SW2a and the capacitor C1 are composed; the power conversion switch circuit is composed of a capacitor C1, an A-phase transducing transformer Tla and a main switch SW2a.
  • the controller arbitration result causes the main switch SW1a to be synchronously turned off at the edge 503 after the main switch is synchronized, while the main switch SW2a is also turned on synchronously at the auxiliary switch synchronization leading edge 504; the main switch operates in the power factor correction State, not only continue to achieve power factor correction function, its current flow direction is shown in the dotted line in the figure. At the same time, the second power conversion state is started, and the power conversion function is realized again. The current flow direction is as shown by the solid line in the figure. From this, it can be seen that another beneficial and remarkable feature is that the power factor correction circuit releases.
  • the energy is not the same as the existing power factor correction circuit. The energy is first transferred to the storage capacitor, but directly transferred to the power conversion switch circuit, thus greatly reducing the capacity requirement for the storage capacitor; The cost and volume of the power supply of the invention are reduced;
  • Timing State 6 As shown in Figure 9F, the multi-edge synchronous controller U1 operates in the T4 transient phase of the active switching period, called the "positive T4 state"; the power factor correction switching circuit is diode-connected by the diodes Dlb, Die, the inductor La, A. Power supply ACa, A-phase converter transformer Tla, capacitor C2 and CI.
  • the controller arbitration result causes the main switch SW2a to be synchronously turned off at the 505 after the auxiliary switch is synchronized, and the switching unit continues to operate in the power factor corrected release state, and the current flow direction is as shown by the dotted line in the figure, but the power conversion The state ends.
  • the main switch and the auxiliary switch may be a field effect transistor or a bipolar transistor or an insulated gate micro transistor or a controllable bidirectional electronic switch.

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

Abstract

L'invention concerne une alimentation à découpage synchrone à fronts multiples qui inclut une unité de conversion à découpage, une unité de sortie à courant continu et un contrôleur synchrone à fronts multiples. Le contrôleur synchrone à fronts multiples inclut une unité de détection de polarité alternative, une unité de détection de surcharge, une unité de détection de facteur de puissance, une unité de détection par rétroaction à sortie continue, une unité de générateur de séquencement synchrone à fronts multiples, un commutateur synchrone à polarité alternative et unité de synthèse et de mappage de signal d'attaque. En conséquence, on réduit le nombre d'éléments de circuits, on simplifie le circuit d'alimentation à découpage et le circuit de commande, et on améliore l'activité et la fiabilité de la conversion de puissance de l'alimentation à découpage
PCT/CN2005/001789 2005-10-28 2005-10-28 Alimentation a decoupage synchrone a fronts multiples et son controleur WO2007048277A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2005/001789 WO2007048277A1 (fr) 2005-10-28 2005-10-28 Alimentation a decoupage synchrone a fronts multiples et son controleur
CN2005800055906A CN1922781B (zh) 2005-10-28 2005-10-28 一种多边沿同步开关电源及其控制器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/001789 WO2007048277A1 (fr) 2005-10-28 2005-10-28 Alimentation a decoupage synchrone a fronts multiples et son controleur

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WO2007048277A1 true WO2007048277A1 (fr) 2007-05-03

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CN111726110B (zh) * 2020-07-06 2024-01-30 中车青岛四方车辆研究所有限公司 一种pwm信号生成方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10248255A (ja) * 1997-02-28 1998-09-14 Toshiba Lighting & Technol Corp 電源装置
JP2003111407A (ja) * 2001-09-28 2003-04-11 Sanken Electric Co Ltd スイッチング電源装置
CN1421986A (zh) * 2001-11-29 2003-06-04 三垦电气株式会社 开关式电源

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10248255A (ja) * 1997-02-28 1998-09-14 Toshiba Lighting & Technol Corp 電源装置
JP2003111407A (ja) * 2001-09-28 2003-04-11 Sanken Electric Co Ltd スイッチング電源装置
CN1421986A (zh) * 2001-11-29 2003-06-04 三垦电气株式会社 开关式电源

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CN1922781A (zh) 2007-02-28

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