WO2015105041A1 - Dispositif de circuit redresseur - Google Patents

Dispositif de circuit redresseur Download PDF

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Publication number
WO2015105041A1
WO2015105041A1 PCT/JP2015/000022 JP2015000022W WO2015105041A1 WO 2015105041 A1 WO2015105041 A1 WO 2015105041A1 JP 2015000022 W JP2015000022 W JP 2015000022W WO 2015105041 A1 WO2015105041 A1 WO 2015105041A1
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Prior art keywords
voltage
power supply
circuit
current
control circuit
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PCT/JP2015/000022
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English (en)
Japanese (ja)
Inventor
吉田　泉
吉朗 土山
京極　章弘
川崎　智広
シンホイ 戴
Original Assignee
パナソニックＩｐマネジメント株式会社
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2015556781A priority Critical patent/JP6471357B2/ja
Priority to CN201580004105.7A priority patent/CN105917568B/zh
Priority to DE112015000382.7T priority patent/DE112015000382T5/de
Publication of WO2015105041A1 publication Critical patent/WO2015105041A1/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0085—Partially controlled bridges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the present disclosure relates to a rectifier circuit device.
  • the rectifier circuit device according to the present disclosure is a device that drives a DC load by converting a single-phase AC power source to DC, or by inversely converting once rectified DC power to AC power of an arbitrary frequency by an inverter circuit.
  • the present invention is applied to a device that drives an electric motor, for example, a device that performs cooling, heating, or freezing.
  • the present disclosure relates to the reduction of harmonic components contained in the input current from the AC power supply and the improvement of the power factor.
  • an input current from an AC power supply is simply expressed as an input current or a power supply current, and a harmonic component included in the input current is also expressed as a harmonic current or a power supply harmonic.
  • An input voltage from an AC power supply is also simply expressed as an input voltage, an AC voltage, or a power supply voltage.
  • This type of rectifier circuit device requires a reactor having a very large inductance in order to reduce harmonic current, leading to an increase in circuit size.
  • a semiconductor switch is used to short-circuit the AC power supply through the reactor to store current in the reactor, and then the semiconductor switch is opened to transfer the stored current to the DC side.
  • a method of reducing harmonics is employed.
  • Patent Document 1 a reactor having a relatively small inductance is employed, and short-circuiting and opening are performed once to several times per power cycle using a semiconductor switch.
  • FIG. 39 is a circuit block diagram showing a conventional rectifier circuit device for realizing the above method.
  • the AC power supply 101 is short-circuited by the semiconductor switch 103 and the current is stored in the reactor 102 in a period in which the absolute value of the voltage of the AC power supply 101 is small, if the semiconductor switch 103 is opened, the stored current is more It flows to the DC side where the voltage is high.
  • the current of the reactor 102 can be transferred to the DC side without performing a short circuit. In this way, the current from the AC power supply 101 flows even during a period when the power supply voltage is low, and a power supply current with less power supply harmonics can be obtained. This method has the advantage that it is not necessary to detect the power supply current.
  • FIG. 40 shows another example of a conventional rectifier circuit device. As in FIG. 39, this type of rectifier circuit device, as shown in FIG. 40, short-circuits the AC power supply 101 with the semiconductor switch 103 via the reactor 102 to charge the reactor 102 with current, and the semiconductor switch 103 is turned off. In the state, a current is passed through the load 110 by the diode bridge 106.
  • the power supply current flows even when the instantaneous voltage of the AC power supply 101 is low.
  • the harmonic component of the power supply current is reduced and the power factor is improved.
  • Patent Document 2 a method described in Patent Document 2 has been proposed.
  • the terminal voltage of the reactor 102 is observed at the zero cross, which is the moment when the polarity of the AC power supply 101 changes. It is detected that a current flows through the reactor 102 according to whether the voltage is high level or low level. The short circuit by the semiconductor switch 103 is not performed while the current is flowing through the reactor 102 and immediately after that.
  • Patent Document 3 As another method, for example, the method described in Patent Document 3 has been proposed. In this method, a reactor having a very small inductance is adopted, and short-circuiting and opening by a semiconductor switch are performed at a frequency much higher than the power supply frequency.
  • the short circuit time ratio the time ratio between the short circuit and the open circuit by the semiconductor switch
  • FIG. 41 is a circuit block diagram showing another example of the conventional rectifier circuit device described in Patent Document 3. As shown in FIG. 41, power from the AC power supply 101 is rectified by a diode 106a, a diode 106b, a diode 106c, and a diode 106d. The rectified DC power is short-circuited and opened by the semiconductor switch 103 via the reactor 102.
  • the energy stored in the reactor 102 at the time of a short circuit flows into the smoothing capacitor 109 via the diode 105.
  • the input current increases, and when the short circuit time becomes shorter, the input current decreases.
  • control circuit 111 controls the rectified DC current detected by the current detection means 107 to be the same as the waveform of the input voltage detected by the voltage detection means 115.
  • the waveform of the input current substantially matches the waveform of the voltage of the AC power supply 101 (hereinafter referred to as AC voltage), and a rectifier circuit with less power supply harmonics is configured.
  • JP 2000-217363 A Japanese Patent Laid-Open No. 2007-300762 JP-A-63-224698 JP 2011-200069 A
  • the power factor is slightly reduced and the power harmonics are slightly increased.
  • phase at which the instantaneous value of the power supply current is maximized is detected and the drive pattern is switched so as to match the phase at which the instantaneous value of voltage is maximized (for example, , See Patent Document 4).
  • the phase having the maximum instantaneous value is referred to as a peak phase.
  • FIG. 42 is a circuit block diagram showing another example of a conventional rectifier circuit device that performs the driving pattern switching method.
  • the zero cross detecting means 113 detects the zero cross of the input voltage of the AC power supply 101.
  • the control circuit 111 generates a drive pattern using the detected zero cross as a reference phase.
  • the voltage detection means 115 detects the input voltage of the AC power supply 101, and the current detection means 107 detects the input current.
  • the control circuit 111 detects the peak phase of the input voltage and the peak phase of the input current from the detected input voltage and input current.
  • the present disclosure solves the above-described conventional problem, without detecting the instantaneous current at a high frequency, when there is a large load fluctuation, when there is a large variation in component constants, or when the AC power supply voltage is
  • An object of the present invention is to provide a rectifier circuit device capable of reducing harmonic current even when distortion is included.
  • the present disclosure can also be applied to a case where the reactor is not required to be downsized.
  • a rectifier circuit device includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero cross of the voltage of an AC power supply, and an input voltage that detects the voltage of the AC power supply.
  • the control circuit estimates the phase of the AC power supply voltage according to the polarity or zero crossing, and is based on the input voltage information for each half cycle or each cycle associated with the AC power supply voltage and the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the drive pattern.
  • the control circuit further adjusts the phase relationship between the drive pattern and the voltage of the AC power supply so that the amounts of current flowing from the two AC power supplies detected in the first half and the second half of each half cycle of the AC power supply approach each other.
  • the distortion of the input current can be suppressed to the extent of the distortion included in the input voltage.
  • a rectifier circuit device of the present disclosure includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero cross of the voltage of an AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, and an input voltage detection circuit And a harmonic extraction circuit that extracts a component excluding the fundamental wave component or an arbitrary harmonic component from the output signal.
  • the control circuit estimates the phase of the AC power supply voltage according to polarity or zero crossing, and adds the components extracted by the harmonic extraction circuit to the basic pattern based on the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the above.
  • the control circuit further adjusts the phase relationship between the basic pattern and the voltage of the AC power supply.
  • the waveform of the input current is symmetric with respect to the electrical angle of 90 degrees or 270 degrees, and the input current and the power supply voltage are in phase.
  • FIG. 1 is a circuit block diagram of a rectifier circuit device according to the first embodiment of the present disclosure.
  • FIG. 2 is a waveform diagram showing the operation of the rectifier circuit device according to the first embodiment.
  • FIG. 3A is a waveform diagram of an input voltage and an input current when the AC power supply includes 5% harmonics of 5% in the first embodiment.
  • FIG. 3B is a waveform diagram of the input voltage and the input current when the short-circuit time ratio D shown in Formula (1) is used in the first embodiment.
  • FIG. 4 is a circuit block diagram of a rectifier circuit device according to the second embodiment of the present disclosure.
  • FIG. 5 is a waveform diagram showing the operation of the rectifier circuit device according to the second embodiment.
  • FIG. 6 is a circuit block diagram of a rectifier circuit device according to the third embodiment of the present disclosure.
  • FIG. 7 is a waveform diagram showing the operation of the rectifier circuit device according to the third embodiment.
  • FIG. 8 is a schematic diagram for explaining a DC voltage control method in the rectifier circuit devices according to the first to third embodiments.
  • FIG. 9 is a circuit block diagram of a rectifier circuit device according to the fourth embodiment of the present disclosure.
  • FIG. 10 is a circuit block diagram of a rectifier circuit device according to the sixth embodiment of the present disclosure.
  • FIG. 11 is a circuit block diagram of a rectifier circuit device according to the eighth embodiment of the present disclosure.
  • FIG. 12 is a circuit block diagram of a rectifier circuit device according to the ninth embodiment of the present disclosure.
  • FIG. 13 is a circuit block diagram of a rectifier circuit device according to the tenth embodiment of the present disclosure.
  • FIG. 14 is a circuit block diagram of a rectifier circuit device according to Embodiment 11 of the present disclosure.
  • FIG. 15A is a waveform diagram showing an operation of the rectifier circuit device according to the eleventh embodiment.
  • FIG. 15B is a waveform diagram showing an operation of the rectifier circuit device according to Embodiment 11.
  • FIG. 16 is a circuit block diagram of a rectifier circuit device according to a twelfth embodiment of the present disclosure.
  • FIG. 17 is a circuit block diagram of a rectifier circuit device according to a thirteenth embodiment of the present disclosure.
  • FIG. 18 is a circuit block diagram of a rectifier circuit device according to a fourteenth embodiment of the present disclosure.
  • FIG. 19 is a waveform diagram showing an example of a readjustment method in the rectifier circuit device according to the fourteenth embodiment.
  • FIG. 20 is a waveform diagram showing another example of the readjustment method in the rectifier circuit device according to the fourteenth embodiment.
  • FIG. 21 is a waveform diagram illustrating an operation of the rectifier circuit device according to the fifteenth embodiment of the present disclosure.
  • FIG. 22 is a waveform diagram showing an operation of the rectifier circuit device according to the sixteenth embodiment of the present disclosure.
  • FIG. 23 is a waveform diagram illustrating an operation of the rectifier circuit device according to the seventeenth embodiment of the present disclosure.
  • FIG. 19 is a waveform diagram showing an example of a readjustment method in the rectifier circuit device according to the fourteenth embodiment.
  • FIG. 20 is a waveform diagram showing another example of the readjustment method in the rectifier circuit device according to the fourteen
  • FIG. 24 is a circuit block diagram of a rectifier circuit device according to Embodiment 18 of the present disclosure.
  • FIG. 25 is a circuit block diagram of a rectifier circuit device according to Embodiment 19 of the present disclosure.
  • FIG. 26 is a circuit block diagram of a rectifier circuit device according to a twentieth embodiment of the present disclosure.
  • FIG. 27 is a circuit block diagram of a rectifier circuit device according to a twenty-first embodiment of the present disclosure.
  • FIG. 28 is a circuit block diagram of a rectifier circuit device according to a twenty-second embodiment of the present disclosure.
  • FIG. 29 is a circuit block diagram of a rectifier circuit device according to Embodiment 24 of the present disclosure.
  • FIG. 30 is a circuit block diagram of a rectifier circuit device according to Embodiment 26 of the present disclosure.
  • FIG. 31 is a circuit block diagram of a rectifier circuit device according to Embodiment 27 of the present disclosure.
  • FIG. 32 is a circuit block diagram of a rectifier circuit device according to Embodiment 28 of the present disclosure.
  • FIG. 33 is a circuit block diagram of a rectifier circuit device according to Embodiment 29 of the present disclosure.
  • FIG. 34A is a waveform diagram showing an operation of the rectifier circuit device according to Embodiment 29 of the present disclosure.
  • FIG. 34B is a waveform diagram showing an operation of the rectifier circuit device according to Embodiment 29 of the present disclosure.
  • FIG. 35 is a circuit block diagram of a rectifier circuit device according to Embodiment 30 of the present disclosure.
  • FIG. 36 is a circuit block diagram of a rectifier circuit device according to Embodiment 31 of the present disclosure.
  • FIG. 37 is a circuit diagram illustrating the harmonic reduction operation principle according to the thirty-second embodiment of the present disclosure.
  • FIG. 38 is a circuit block diagram of a rectifier circuit device according to Embodiment 36 of the present disclosure.
  • FIG. 39 is a circuit block diagram showing an example of a conventional rectifier circuit device.
  • FIG. 40 is a circuit block diagram showing another example of a conventional rectifier circuit device.
  • FIG. 41 is a circuit block diagram showing another example of a conventional rectifier circuit device.
  • FIG. 42 is a circuit block diagram showing another example of a conventional rectifier circuit device.
  • a rectifier circuit includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero cross of the voltage of an AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, and an AC A current detection circuit for detecting a current flowing from the power supply; and a DC voltage detection circuit for detecting a DC voltage.
  • the control circuit estimates the phase of the AC power supply voltage according to the polarity or zero crossing, and drives based on the input voltage information for each half cycle or each cycle associated with the AC power supply voltage and the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the pattern.
  • the control circuit further adjusts the phase relationship between the drive pattern and the voltage of the AC power supply so that the amounts of current flowing from the two AC power supplies detected in the first half and the second half of each half cycle of the AC power supply approach each other.
  • a rectifier circuit device includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero crossing of the voltage of the AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, A DC voltage detection circuit for detecting a DC voltage.
  • the control circuit estimates the phase of the AC power supply voltage according to the polarity or zero crossing, and is based on the input voltage information for each half cycle or each cycle associated with the AC power supply voltage and the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the drive pattern.
  • the control circuit further adjusts the phase relationship between the drive pattern and the voltage of the AC power supply so that the average DC voltage in a period of half a cycle or more of the AC power supply approaches the DC voltage at the peak phase of the instantaneous voltage of the AC power supply. .
  • a rectifier circuit device includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero crossing of the voltage of the AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, In order to detect the DC power equivalent, a current detection circuit for detecting the DC current and a smoothing circuit for smoothing the output of the current detection circuit are provided.
  • the control circuit estimates the phase of the AC power supply voltage according to the polarity or zero crossing, and is based on the input voltage information for each half cycle or each cycle associated with the AC power supply voltage and the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the drive pattern.
  • the control circuit further adjusts the phase relationship between the drive pattern and the voltage of the AC power supply so that the two DC power amounts detected in the first half and the second half of each half cycle of the AC power supply approach each other.
  • a rectifier circuit device includes a control circuit that controls the semiconductor switch, a circuit that detects the polarity or zero cross of the voltage of the AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, A DC voltage detection circuit for detecting a DC voltage and a circuit for detecting the presence or absence of a current flowing through the reactor are provided.
  • the control circuit estimates the phase of the AC power supply voltage according to the polarity or zero crossing, and is based on the input voltage information for each half cycle or each cycle associated with the AC power supply voltage and the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the drive pattern.
  • the control circuit further advances the phase of the drive pattern before and after the instant when the instantaneous voltage of the AC power source becomes zero, and advances the phase of the drive pattern relative to the voltage of the AC power source when the current flowing through the reactor is detected. When it is not detected, it is configured to delay with respect to the voltage of the AC power supply.
  • the circuit that detects the presence or absence of a current flowing through the reactor includes at least one of the diodes connected to the output side of the rectifier circuit device of the reactor and the output side of the rectifier circuit device. It is detected depending on whether or not it is in a conductive state.
  • a rectifier circuit device is configured such that, in the first aspect, the control circuit adjusts the short-circuit time ratio of the drive pattern so that the detected DC voltage approaches the target value. Is.
  • the DC voltage can be adjusted with only one type of driving pattern without detecting the instantaneous current.
  • the control circuit uses fv ( ⁇ ) as input voltage information for each half cycle or one cycle detected from the voltage of the AC power supply
  • the control circuit further adjusts the phase delay ⁇ in equation (1) according to the difference between the two current values detected in the first half and the second half of each half cycle of the AC power supply, and detects the detected DC voltage and DC voltage.
  • the coefficient A in equation (1) is adjusted according to the difference from the target value.
  • a rectifier circuit device is configured such that, in the seventh aspect, the control circuit readjusts the short-circuit time ratio according to a ratio between the detected DC voltage and the target value of the DC voltage. It has been done.
  • the short circuit time ratio D is calculated using the coefficient A1 in the equation (8) or the coefficient A2 in the equation (9).
  • a rectifier circuit device includes a control circuit that controls a semiconductor switch, a circuit that detects the polarity or zero crossing of the voltage of the AC power supply, an input voltage detection circuit that detects the voltage of the AC power supply, A harmonic extraction circuit that extracts a component excluding the fundamental wave component or an arbitrary harmonic component from the output signal of the input voltage detection circuit.
  • the control circuit estimates the phase of the AC power supply voltage according to polarity or zero crossing, and adds the components extracted by the harmonic extraction circuit to the basic pattern based on the AC power supply voltage phase.
  • the semiconductor switch is controlled according to the above.
  • the control circuit is further configured to adjust the phase relationship between the basic pattern and the voltage of the AC power supply.
  • a rectifier circuit device is configured such that, in the tenth aspect, the control circuit adjusts the short-circuit time ratio of the drive pattern so that the detected DC voltage approaches the target value. Is.
  • a rectifier circuit device is the rectifier circuit device according to the tenth aspect, in which the control circuit has sin ( ⁇ ) as the fundamental component of the voltage of the AC power supply, Vac_harm ( ⁇ ) as the harmonic component, and DC voltage as the harmonic component.
  • the control circuit further adjusts the phase delay ⁇ in Equation (10) according to the difference between the two power values or current values detected in the first half and the second half of each half cycle of the AC power supply, and detects the detected DC voltage.
  • the coefficient A in the equation (10) are adjusted according to the difference between the DC voltage and the target value of the DC voltage.
  • a rectifier circuit device is the rectifier circuit device according to the first aspect, in which the control circuit detects that the amount of power or the amount of current detected at the beginning, middle, and end of the half cycle of the AC power source is within a predetermined range. It is configured to adjust the drive pattern to enter.
  • a rectifier circuit device is configured such that, in the first aspect, the control circuit adjusts the drive pattern so that the waveform of the DC voltage in the half cycle of the AC power supply is symmetrical. It has been done.
  • FIG. 1 is a circuit block diagram of a rectifier circuit device according to the first embodiment of the present disclosure.
  • the semiconductor switch 3a and the semiconductor switch 3b, the diode 6a and the diode 6b are respectively connected in series.
  • One end of the AC power source 1 is connected to a common connection terminal of the semiconductor switches 3a and 3b via the reactor 2.
  • a diode 6c and a diode 6d are connected in parallel to the semiconductor switches 3a and 3b in opposite directions, respectively.
  • the other end of the AC power source 1 is connected to a common connection terminal of the diodes 6a and 6b.
  • the other ends of the semiconductor switch 3 a and the diode 6 a are connected to one end of the smoothing capacitor 9.
  • the other ends of the semiconductor switch 3b and the diode 6b are connected to the other end of the smoothing capacitor 9.
  • a load 10 is connected to both ends of the smoothing capacitor 9.
  • the polarity detection circuit 12 is provided between both ends of the AC power supply 1, detects polarity information indicating which terminal of the AC power supply 1 has a higher potential, and sends the polarity information to the control circuit 11. This polarity information is used to determine which of the semiconductor switches 3a and 3b should be operated.
  • the input voltage detection circuit 15 is connected to one end of the AC power supply 1, detects the instantaneous voltage of the AC power supply 1, and sends the information to the control circuit 11 as input voltage information.
  • DC voltage detection circuit 14 detects the instantaneous voltage across smoothing capacitor 9 and sends the information to control circuit 11 as DC side voltage information (DC voltage information).
  • the current detection circuit 7 detects a current flowing on the DC side.
  • the smoothing circuit 8 smoothes the current detected by the current detection circuit 7 and sends the current information to the control circuit 11.
  • the control circuit 11 includes a microcomputer and software that operates on the microcomputer, and sends drive control signals to the semiconductor switch drive circuit 4a and the semiconductor switch drive circuit 4b in accordance with various information detected by the detection circuit described above.
  • the semiconductor switch drive circuits 4a and 4b drive the semiconductor switches 3a and 3b, respectively, according to the drive control signal.
  • control circuit 11 calculates the short-circuit time ratio D in the drive pattern for the semiconductor switch 3a or 3b using the input voltage information and the following equation (1).
  • ⁇ is the electrical angle of the AC power supply
  • fv ( ⁇ ) is the input voltage information of the half cycle or one cycle of the AC power supply 1
  • ⁇ is a positive constant indicating the phase delay.
  • fv ( ⁇ ) is assumed to be 0 or more.
  • the DC voltage detected by the DC voltage detection circuit 14 is adjusted by adjusting the phase delay ⁇ in the equation (1) according to the difference between the two power values detected in the first half and the second half of each half cycle of the AC power supply 1.
  • the coefficient A in the equation (1) is adjusted according to the difference between the target value and the target value.
  • the control circuit 11 uses the polarity information and input voltage information of the AC power source 1, DC side voltage information (DC voltage information) that is the voltage across the smoothing capacitor 9, and the smoothed power information to switch the semiconductor switch A drive control signal is sent to the drive circuits 4a and 4b, and the short circuit and the open circuit are controlled using one of the semiconductor switches 3a and 3b.
  • DC voltage information DC voltage information
  • the smoothed power information is obtained from the DC-side current information detected by the current detection circuit 7 and smoothed by the smoothing circuit 8.
  • the semiconductor switch 3b performs short-circuiting / opening.
  • the reactor 2 stores current when short-circuited by the semiconductor switch 3b.
  • the current stored in the reactor 2 is sent to the smoothing capacitor 9 via the diode 6c when opened.
  • the DC voltage detection circuit 14 detects the instantaneous voltage across the smoothing capacitor 9.
  • the input voltage detection circuit 15 detects instantaneous voltage information of the AC power supply 1.
  • control circuit 11 receives information from all other circuits including the above-described detection circuit, and based on them, performs all operations related to calculation, comparison, determination, setting, adjustment, control, and the like. Shall be in charge.
  • FIG. 2 is a waveform diagram showing the operation of the rectifier circuit device according to the present embodiment.
  • a method of adjusting the phase of the drive pattern for the semiconductor switch 3a or 3b by the control circuit 11 will be described with reference to FIG.
  • the upper right waveform in FIG. 2 indicates an AC voltage
  • the lower right waveform indicates a drive pattern for the semiconductor switch 3a or 3b.
  • the horizontal axis of the waveform diagrams and the driving pattern diagrams represents the electrical angle of the AC power supply.
  • the current detected by the current detection circuit 7 in FIG. 1 is the situation Sa, the situation Sb, and the situation Sc in the second to fourth waveform diagrams on the left side in FIG. Each is shown. That is, no current flows when the semiconductor switch is ON, and current flows into the smoothing capacitor 9 when the semiconductor switch is OFF.
  • the waveform diagram at the bottom left side of FIG. 2 is obtained by smoothing these currents in the smoothing circuit 8 and then converting them into power information.
  • the waveform indicated by the alternate long and short dash line corresponds to the power in the situation Sa
  • the waveform indicated by the dotted line corresponds to the power in the situation Sb
  • the waveform indicated by the solid line corresponds to the power in the situation Sc.
  • phase modulation of the drive pattern For example, if there is more in the first half as in the power in the situation Sb (the waveform indicated by the dotted line), the entire phase of the drive pattern of the semiconductor switch is advanced. Specifically, the phase delay ⁇ in the equation (1) is reduced.
  • the electric energy is the same in the first half and the second half, and the current amount is also the same in the first half and the second half. That is, according to the present embodiment, the current peak coincides with the AC instantaneous voltage peak, and a rectifier circuit device having a high power factor is realized.
  • a pattern in which short-circuiting by the semiconductor switch is hardly performed is set in a phase where the absolute value of the instantaneous value of the AC voltage is large. This is based on the characteristics that the current increases as the absolute value of the instantaneous value of the AC voltage increases, and that the amount of increase in current increases as the short-circuit time ratio increases.
  • the input current gradually increases as the absolute value of the instantaneous voltage value (instantaneous voltage) increases.
  • the absolute value of the instantaneous voltage decreases, the input current gradually decreases.
  • phase modulation of the drive pattern in the present embodiment is performed so that the power information (power amount) in the first half and the second half of the half cycle of the AC power supply are equal and the input voltage information is reflected. Is called.
  • Such a simple process does not require the accuracy of the inductance of the reactor, can cope with load fluctuations and distortion of the input voltage, and can realize a rectifier circuit device with less power harmonics.
  • it is sufficient to detect the power not at every moment but at a frequency at which the change of every quarter cycle of the AC power source is known, so that inexpensive parts can be used.
  • the current detection circuit 7 can be used to monitor the current, so that it is not necessary to separately provide a dedicated current detection circuit.
  • FIG. 8 is a schematic diagram for explaining a DC voltage control method in the present embodiment. Hereinafter, how the DC voltage is kept constant in the present embodiment will be described with reference to FIG.
  • the DC voltage (actual DC voltage) detected by the DC voltage detection circuit 14 is compared with the target value (set DC voltage) of the DC voltage, and the short-circuit time ratio of the drive pattern is adjusted according to the result. As the short-circuit time increases, the energy stored in the reactor 2 increases. At the time of opening, the energy is sent to the smoothing capacitor 9 and the output voltage rises.
  • the DC voltage detected using this principle can be brought close to the target value and substantially matched.
  • the adjustment amount of the short circuit time ratio is set to increase.
  • the adjustment amount of the short circuit time ratio is set to be decreased.
  • the input current has a waveform similar to the power supply voltage. Therefore, if the amplitude of the input current is changed while maintaining the waveform of the input current, the DC voltage can be changed. . Therefore, the current change is larger in the phase where the short circuit time ratio is small and the absolute value of the instantaneous voltage is large than in the phase where the short circuit time ratio is large and the absolute value of the instantaneous voltage is small.
  • only one type of driving pattern is used without detecting and controlling the instantaneous current by increasing the adjustment amount in the phase where the absolute value of the instantaneous voltage of the AC power supply 1 is large. DC voltage can be adjusted.
  • the waveform of the power supply voltage is a sine wave, and for example, the short-circuit time ratio D at the electrical angle ⁇ is defined by the following equation (2).
  • Short-circuit time ratio D 1 ⁇ A ⁇ sin ( ⁇ ) (2)
  • the coefficient A is adjusted by the difference between the DC voltage and the target value
  • the phase delay ⁇ is adjusted by the difference in power between the first half and the second half every half cycle. Since the short-circuit time ratio D is a value not less than 0 and not more than 1, it is set to 1 when the right side exceeds 1, and set to 0 when the right side is smaller than 0.
  • the set drive pattern is based on one sine wave.
  • the short-circuiting time ratio D is relatively large, and the adjustment amount corresponding to the voltage difference is the period in which the absolute value of the instantaneous voltage of the AC power supply 1 is high. Is greater than the low period.
  • FIG. 3A shows an example of the input current when the short circuit time ratio D is set by the above equation (2) when distortion is included in the input voltage.
  • FIG. 3A is a waveform diagram of an input voltage and an input current when the AC power supply 1 includes a fifth harmonic of 5%. As shown in FIG. 3A, when the voltage of the AC power supply 1 is distorted, the input current is greatly distorted.
  • the control circuit 11 stores the output of the input voltage detection circuit 15 every half cycle as input voltage information fv ( ⁇ ).
  • the input voltage information fv ( ⁇ ) is reflected in the calculation of the short circuit time ratio D in the next cycle.
  • the formula for calculating the short-circuit time ratio D when reflected is set as shown in Equation (1).
  • FIG. 3B is a waveform diagram of the input voltage and the input current when the short-circuit time ratio D shown in Expression (1) is used. As shown in FIG. 3B, the input current can be suppressed to the same distortion as the input voltage.
  • the amount of power detected in the first half and the second half of each half cycle of the AC power source 1 is, for example, a certain time (T) before the instant at which the instantaneous value of the AC voltage becomes maximum (electrical angle 90 degrees), for example,
  • T a certain time
  • the increase / decrease change direction of the absolute value of the instantaneous voltage and the increase / decrease change direction of the short-circuit time ratio D in each phase of the AC power source 1 are opposite, and the adjustment amount according to the difference in DC voltage causes a short circuit.
  • the time ratio D is set to have a change characteristic in the opposite direction to the change direction of the magnitude.
  • the input voltage information fv ( ⁇ ) of a half cycle is reflected in the calculation of the short circuit time ratio D in the next half cycle.
  • the present invention is not limited to this. For example, it may be reflected in the calculation after one cycle.
  • FIG. 4 is a circuit block diagram of a rectifier circuit device according to the second embodiment of the present disclosure.
  • the circuit configuration of FIG. 4 is substantially the same as that of FIG. 1 except that the current detection circuit 7 is not provided.
  • the control circuit 11 receives the output (polarity information) of the polarity detection circuit 12, the output information (DC voltage information) of the DC voltage detection circuit 14, and the output information (input voltage information) of the input voltage detection circuit 15.
  • the usage method of the polarity detection circuit 12 and the input voltage detection circuit 15 is the same as that of the first embodiment.
  • FIG. 5 is a waveform diagram showing the operation of the rectifier circuit device according to the present embodiment.
  • the phase modulation of the drive pattern according to the output information of the DC voltage detection circuit 14 will be described with reference to FIG. Similar to the description of FIG. 2, it is necessary to match the peak of the power sent to the smoothing capacitor 9 with the peak phase of the instantaneous voltage of the AC power supply 1.
  • the output of the smoothing capacitor 9 has a ripple like a situation Sc (solid waveform) in the waveform shown in the lower part of the left side of FIG. That is, the DC voltage decreases in the first half of the half cycle and increases in the second half. However, at the voltage peak phase of the AC power supply 1, it is the center of fluctuation and is equal to the average DC voltage.
  • Sc solid waveform
  • the DC voltage at the voltage peak phase of the AC power supply 1 deviates from the average value. For example, when the phase of the power peak portion advances as in the situation Sb (dotted line waveform), the DC voltage at the voltage peak phase of the AC power supply 1 increases.
  • the DC voltage at the same phase decreases. Therefore, the average DC voltage, which is the average value of the DC voltage over a period of more than a half cycle of the AC power supply, is compared with the DC potential at the voltage peak phase of the AC power supply 1, and the AC power supply phase and the drive pattern of the semiconductor switch are compared. Adjust the phase relationship. Thereby, the peak phase of the alternating current coincides with the peak of the instantaneous voltage of the alternating current power supply 1, and a rectifier circuit device having a high power factor can be realized.
  • FIG. 6 is a circuit block diagram of a rectifier circuit device according to the third embodiment of the present disclosure.
  • the circuit configuration of FIG. 6 is substantially the same as that of FIG. 1 except that the current detection circuit 7 is provided at a position where the current from the AC power supply 1 can be directly detected.
  • the control circuit 11 outputs the polarity detection circuit 12 (polarity information), the current detection circuit 7 (current information), the input voltage detection circuit 15 (input voltage information), and the DC voltage detection circuit 14 (DC voltage). Information).
  • the usage method of the polarity detection circuit 12, the input voltage detection circuit 15, and the DC voltage detection circuit 14 is the same as that of the first embodiment.
  • FIG. 7 is a waveform diagram showing the operation of the rectifier circuit device according to this embodiment.
  • the phase adjustment of the drive pattern according to the current information detected by the current detection circuit 7 will be described with reference to FIG. In this case, it is necessary to match the peak phase of the detected current with the peak phase of the instantaneous voltage of the AC power supply 1.
  • the peak phases can be matched. Therefore, by comparing the current information (current amount) in the first half and the second half of the half cycle and adjusting the overall phase of the driving pattern of the semiconductor switch, the peak phase of the current matches the peak phase of the instantaneous voltage of the AC power supply.
  • a high power factor rectifier circuit device can be realized.
  • current detection means are often provided on the AC side, and according to the third embodiment, this current detection means can also be used as a current detection circuit. Can be realized even more easily.
  • the specific drive pattern and DC voltage control method and the method of reducing the influence on the input current due to the distortion included in the input power supply are the same as in the first embodiment.
  • the detection value at the phase symmetric with respect to the electrical angle of 90 degrees described in the first embodiment is used as a representative value. Is possible as well.
  • the detected current amount in the first half and the second half of each half cycle of the AC power supply 1 is a certain time (T: 50, for example) from the time when the instantaneous value of the AC voltage is maximum (electrical angle 90 degrees). And a detected value at a time point (for example, 140 degrees) after the same fixed time (T) from the time at which the instantaneous value of the AC voltage is maximized.
  • FIG. 9 is a circuit block diagram of a rectifier circuit device according to the fourth embodiment of the present disclosure.
  • the first embodiment is designed with a different circuit configuration.
  • the basic circuit configuration in the fourth embodiment is obtained by adding an input voltage detection circuit 15 to that shown in Patent Document 1.
  • the AC power supply 1 is short-circuited through the reactor 2 using the semiconductor switch 3.
  • the energy stored in the reactor 2 is sent to the smoothing capacitor 9 via the diodes 6a, 6b, 6c and 6d.
  • the control circuit 11 is the same as that of the first embodiment except for the selection of the semiconductor switch 3a and the semiconductor switch 3b.
  • the control circuit 11 is the same as that of the second embodiment except for the selection of the semiconductor switch 3a and the semiconductor switch 3b.
  • FIG. 10 is a circuit block diagram of a rectifier circuit device according to the sixth embodiment of the present disclosure. This embodiment is designed with a circuit configuration further different from that of the above-described embodiment.
  • the basic circuit configuration is obtained by adding an input voltage detection circuit 15 to that shown in Patent Document 3.
  • the AC power source 1 is rectified by the diodes 6a, 6b, 6c, and 6d, and then short-circuited by the semiconductor switch 3 through the reactor 2.
  • the energy stored in the reactor 2 is sent to the smoothing capacitor 9 via the diode 5.
  • the information on the input side of the rectifier circuit device is input by the zero-cross information by the zero-cross detection circuit 13 and the input by the input voltage detection circuit 15 as in the above-described fourth embodiment. It is sufficient if voltage information is available.
  • the operation of the control circuit 11 is the same as that of the first embodiment except for the selection of the semiconductor switch 3a and the semiconductor switch 3b.
  • the current detection circuit 7 according to the sixth embodiment is moved into a loop composed of the diodes 6a, 6b, 6c, 6d, the reactor 2, and the semiconductor switch 3.
  • the same function as in the ninth embodiment can be realized.
  • the operation of the control circuit 11 is the same as that of the third embodiment except for the selection of the semiconductor switch 3a and the semiconductor switch 3b.
  • FIG. 14 is a circuit diagram of a rectifier circuit device according to an eleventh embodiment of the present disclosure.
  • the AC power source 1 is connected to the semiconductor switch 3 via one end of the diode bridge 6 and the reactor 2 so as to be short-circuited.
  • the output of the reactor 2 and the output of the other end of the diode bridge 6 are connected to the smoothing capacitor 9 and the load 10 via the diode 5.
  • the output of the reactor 2 is also connected to the voltage detection circuit 19, and terminal voltage information of the reactor 2 is input to the control circuit 11.
  • the voltage information across the smoothing capacitor 9 is detected by the DC voltage detection circuit 14 and the information is also input to the control circuit 11.
  • a current can be passed through the reactor 2 even during a period in which the absolute value of the voltage of the AC power supply 1 is small.
  • the semiconductor switch 3 is opened, the current flowing through the reactor 2 charges the smoothing capacitor 9 via the diode 5. Thereby, the harmonics of the current flowing from the AC power supply 1 can be reduced.
  • FIG. 15A and 15B are waveform diagrams showing the operation of the rectifier circuit device according to the present embodiment.
  • the waveform shown in FIG. 15A is obtained when the short circuit and the open circuit by the semiconductor switch 3 operate properly.
  • the waveform shown in FIG. 15B is obtained when the short circuit and the open circuit by the semiconductor switch 3 are delayed from the proper state.
  • a smaller reactor 2 can be used by short-circuiting and opening the semiconductor switch 3 with a sufficiently high frequency with respect to the cycle of the AC power source 1.
  • the instantaneous short-circuit time ratio D is set as a pattern, and the phase of the pattern is adjusted according to the presence or absence of current when the instantaneous voltage of the AC power supply 1 returns to zero.
  • the second-stage waveform indicates the short-circuit time ratio D.
  • the output signal of the voltage detection circuit 19 has a waveform in which High and Low change frequently as shown in the lowermost stage of FIGS. 15A and 15B.
  • the waveform of the power supply voltage is a sine wave, and for example, the short-circuit time ratio D at the electrical angle ⁇ is set by the following equation (2).
  • Short-circuit time ratio D 1 ⁇ A ⁇ sin ( ⁇ ) (2)
  • the coefficient A is adjusted by the difference between the DC voltage and the target value
  • the phase delay ⁇ is adjusted by whether or not current flows through the reactor 2 when the instantaneous voltage of the AC power supply 1 returns to zero. Is done. That is, when the current flowing through the reactor 2 is detected, the phase delay ⁇ is decreased, and when the current flowing through the reactor 2 is not detected, the phase delay ⁇ is increased.
  • the short circuit time ratio D is a ratio and must be a value not less than 0 and not more than 1. Therefore, when the right side exceeds 1, it is set to 1 and when the right side is less than 0, it is set to 0.
  • the set drive pattern is based on one sine wave.
  • the short circuit time ratio D is relatively large.
  • the period in which the absolute value of the instantaneous voltage of the AC power supply 1 is high is greater than the period in which it is low.
  • FIG. 3A shows an example when the short circuit time ratio D is set according to the above equation (2) when the voltage of the input power supply includes distortion.
  • the input current is greatly distorted. This is because the voltage of the input power supply includes distortion, while the voltage expressed by the short-circuit time ratio D is created based on a sine wave pattern that does not include distortion.
  • the input voltage information fv ( ⁇ ) is reflected in the calculation formula of the short-circuit time ratio D as described in the first embodiment.
  • the short-circuit time ratio D when reflected is calculated by the equation (1).
  • control circuit 11 is the same as that of the second embodiment except for the portion related to the phase adjustment.
  • FIG. 16 is a circuit block diagram of a rectifier circuit device according to a twelfth embodiment of the present disclosure.
  • an AC power source 1 is connected to semiconductor switches 3a and 3b connected in series via a reactor 2.
  • the common connection terminals of the semiconductor switches 3 a and 3 b are connected to the input terminal of the diode bridge 6.
  • the output voltage of the diode bridge 6 is smoothed by the smoothing capacitor 9.
  • the smoothed DC voltage is supplied to the load 10.
  • the polarity detection circuit 12 detects the polarity of the instantaneous voltage of the AC power supply 1.
  • the phase of the input voltage is estimated from the detected polarity.
  • Input voltage information for each half cycle or each cycle associated with the voltage of the AC power supply 1 detected by the input voltage detection circuit 15 and the estimated phase information is calculated.
  • One of the two semiconductor switches 3a and 3b is controlled according to the input voltage information.
  • This embodiment has a configuration known as a mixed bridge type rectifier circuit. Except for the operation of switching the semiconductor switches 3a and 3b to be driven according to the polarity of the instantaneous voltage of the AC power supply 1, it is the same as a normal mixed bridge type rectifier circuit.
  • the logic is inverted depending on the polarity of the instantaneous voltage of the AC power supply 1. Therefore, when the instantaneous voltage of the AC power supply 1 changes from positive to zero, the instantaneous The logic is reversed when the voltage goes from negative to zero.
  • the diode 6c and the diode 6d are not conducting, and the voltage detection circuit 119 can obtain intermediate level information.
  • control circuit 11 is the same as in the eleventh embodiment except for the handling of the output of the voltage detection circuit 119 and the selection of the semiconductor switch 3a and the semiconductor switch 3b described in the present embodiment.
  • the voltage detection circuit 19 shown in FIG. 14 can be used instead of the voltage detection circuit 119, and the method can be implemented only when the instantaneous voltage of the AC power supply 1 changes from positive to zero. It is.
  • FIG. 17 is a circuit diagram illustrating a rectifier circuit device according to a thirteenth embodiment of the present disclosure.
  • the reactor 2 is directly connected to one end of the AC power source 1 as in the above-described FIG.
  • the semiconductor switch 3 is connected between the output of the reactor 2 and the other end of the AC power supply 1 and directly short-circuits the AC power supply 1 and the reactor 2.
  • the short-circuit and open-circuit operation method using the semiconductor switch 3 and the DC voltage control method are the same as those in the eleventh embodiment described with reference to FIG.
  • the method of using the output information of the voltage detection circuit 119 is the same as that in the twelfth embodiment described with reference to FIG.
  • FIG. 18 is based on the same basic circuit configuration as in the first, second and third embodiments shown in FIGS. 1, 4 and 6, respectively.
  • FIGS. 1, 4 and 6 respectively.
  • an operation during a period in which the terminal to which the reactor 2 is connected among the two output terminals of the AC power supply 1 is at a positive potential will be described.
  • the semiconductor switch 3a is in an OFF state, and short-circuiting and opening are performed by the semiconductor switch 3b.
  • a short circuit occurs, a short circuit loop is formed by the AC power source 1, the reactor 2, the semiconductor switch 3b, and the diode 6b, and current is stored in the reactor 2.
  • the current stored in the reactor 2 flows to the smoothing capacitor 9 and the load 10 via the diode 6c, and flows to the AC power source 1 via the diode 6b.
  • Vpwm Vdc ⁇ A ⁇ fv ( ⁇ ) (5)
  • the DC voltage includes a ripple component. For this reason, as it is, Vpwm does not reflect only the input voltage information.
  • Vpwm Vdc (av) ⁇ A ⁇ fv ( ⁇ ) (7)
  • a coefficient A1 shown in the following formula (8) may be used instead of the coefficient A of the arithmetic expression used in the first embodiment, the second embodiment, the third embodiment, and the eleventh embodiment.
  • FIG. 19 is a waveform diagram for explaining the flow of this process.
  • the actual DC voltage (Vdc) and the set DC voltage (Vdc *) are compared by the comparison circuit 201, and a temporary coefficient A that is a result of the temporary adjustment of the short-circuit time ratio is obtained. can get.
  • the readjustment circuit 202 performs the calculation of the above equation (8) using this temporary coefficient A, and readjusts the short-circuit time ratio D. In accordance with the driving pattern using the coefficient A1 obtained in this way, short-circuiting and opening by the semiconductor switch are performed.
  • a coefficient A2 represented by the following equation (9) may be used as a method for simplifying instantaneous division. This method can also perform highly accurate correction.
  • FIG. 20 is a waveform diagram illustrating the flow of this process, as in FIG. 20, the difference from FIG. 19 is that the readjustment circuit 207 performs the calculation of the above equation (9) and readjusts the short-circuit time ratio D. According to the drive pattern using the coefficient A2 obtained in this way, short-circuiting and opening by the semiconductor switch are performed.
  • FIG. 21 is a waveform diagram showing a method for determining the length of the ON period (hereinafter referred to as ON width) in the drive pattern according to the present embodiment.
  • ON width the ON width
  • the upper left waveform diagram of the left side and the right side shows the AC voltage for a half cycle
  • the lower right waveform diagram shows the ON width with respect to the electrical angle in the drive pattern of the semiconductor switch.
  • the ON width is the smallest around an electrical angle of 90 degrees.
  • the waveform diagrams shown from the second stage to the fourth stage on the left side of FIG. 21 show three situations regarding the detected current. As indicated by the alternate long and short dash line in the second-stage waveform diagram on the left side, in the situation Sa, the difference in detected current is relatively small between a high electrical angle and a low electrical angle.
  • the detected current increases rapidly when approaching the electrical angle of 90 degrees, and the detected current decreases rapidly when moving away from the electrical angle of 90 degrees.
  • the situation Sc a current having a waveform close to a sine wave is detected as in the AC voltage. That is, among these situations, the situation Sc has the least number of harmonics.
  • DC power in the situation Sa has a relatively flat and wide waveform.
  • the DC power in the situation Sb has a sharp waveform having a sharp peak near 90 electrical degrees.
  • the DC power in the situation Sc shows the most desirable waveform among them.
  • the level of the DC power after smoothing in three sections (hereinafter referred to as an early stage, a middle stage, and an end stage in order) equally divided by a half cycle of the power source is compared.
  • the power level at the beginning or end of the half cycle is compared with the power level at the middle of the half cycle.
  • the power level at the beginning or end of the half cycle is relatively high compared to the middle stage.
  • the power level at the beginning or end is relatively small compared to the middle.
  • the ratio between the power level in the early stage or the end stage and the power level in the middle stage is appropriate.
  • the power is measured at 45 degrees in the early stage, 90 degrees in the middle stage, and 135 degrees in the final stage, and is set as a representative value of each section.
  • the power level ratio in the three sections is ideally 1: 2: 1.
  • the ON width of the drive pattern is modulated by the following method. As shown in the waveform diagram on the lower right side of FIG. 2, the ON width is generally reduced in the vicinity of the electrical angle of 90 degrees, and the ON width is increased in the vicinity of the electrical angles of 0 degrees and 180 degrees.
  • the adjustment amount of the ON width in the case of the situation Sa is made smaller than that in the situation Sc, and in the vicinity of the electrical angle of 0 degree and 180 degrees, the adjustment amount of the ON width in the situation Sa Make it larger than in the case of Sc.
  • the adjustment amount of the ON width in the case of the situation Sb is made larger than that in the situation Sc, and in the vicinity of the electrical angle of 0 degree and 180 degrees, the adjustment amount of the ON width in the situation Sb is set to the situation. Make it smaller than in the case of Sc.
  • control circuit 11 other than the ON width modulation method based on the three-point comparison within the half cycle of the AC power supply described in the present embodiment is the same as that in the first embodiment and the fourteenth embodiment.
  • FIG. 22 is a waveform diagram showing a method for determining the ON width in the drive pattern according to the present embodiment.
  • the upper left waveform diagram on the left side and the right side shows an AC voltage for a half cycle.
  • the waveform indicated by the alternate long and short dash line indicates the power in the situation Sa, and is a relatively flat and wide waveform.
  • the waveform indicated by the dotted line indicates the electric power in the situation Sb, and is a sharp waveform having a sharp peak near an electrical angle of 90 degrees.
  • the waveform indicated by the solid line indicates the power in the situation Sc, and shows the most desirable waveform among them.
  • the state Sc is the state where the power supply harmonics are the least, and the waveform indicated by the solid line in the left lower waveform diagram is the most desirable waveform for the DC voltage.
  • the waveform indicated by the alternate long and short dash line indicates the DC voltage in the situation Sa shown in the left middle waveform diagram.
  • a waveform indicated by a dotted line indicates a DC voltage in the situation Sb shown in the left middle waveform diagram.
  • the waveform indicated by the solid line indicates the DC voltage in the situation Sc shown in the left middle waveform diagram.
  • the DC voltage in the situation Sa rises gently in the vicinity of the electrical angle of 90 degrees, and sharply falls in the vicinity of the electrical angles of 0 degrees and 180 degrees.
  • the DC voltage in the situation Sb increases rapidly in the vicinity of the electrical angle of 90 degrees, and gradually decreases in the vicinity of the electrical angles of 0 degrees and 180 degrees.
  • the DC voltage in the situation Sc shows a waveform closer to a sine wave than in other situations.
  • the shape of the waveform of the input voltage can be estimated by examining the change in the DC voltage in the vicinity of an electrical angle of 45 degrees or 135 degrees.
  • the ON width of the drive pattern is modulated using the modulation method described with reference to FIG. 21 in the fifteenth embodiment.
  • control circuit 11 other than the ON width modulation method based on the two-point comparison in the first half or the second half in the half cycle of the AC power source described in the present embodiment are the same as those in the second embodiment and the fourteenth embodiment. .
  • FIG. 23 is a waveform diagram showing a method for determining the ON width in the drive pattern according to the present embodiment.
  • the upper left waveform diagram on the left side and the right side shows the AC voltage for a half cycle.
  • the waveform diagram shown in the lower left part of FIG. 23 shows the current detected by the current detection circuit 7.
  • the detected current increases rapidly when approaching the electrical angle of 90 degrees, and the detected current decreases sharply away from the electrical angle of 90 degrees, and is sharp near the electrical angle of 90 degrees. It has a sharp waveform with a peak.
  • a current having an appropriate waveform close to a sine wave is detected as in the case of the AC voltage.
  • the level of the DC current after smoothing is compared in three sections that equally divide the half cycle of the power supply. That is, the current level at the beginning or end is compared with the current level at the middle.
  • the current level in the early or final stage is higher than that in the middle stage
  • the current level in the early or late stage is smaller than that in the middle stage.
  • the current level in the early or late stage and the current level in the middle stage Is the most appropriate of these.
  • the current is measured at 45 degrees in the early stage, 90 degrees in the middle stage, and 135 degrees in the final stage, and is set as a representative value of each section.
  • the ON width of the drive pattern is modulated by the following method. As shown in the lower right waveform diagram of FIG. 23, the ON width of the drive pattern is modulated using the modulation method described in FIG. 21 in the fifteenth embodiment and FIG. 22 in the sixteenth embodiment. To do.
  • control circuit 11 is the same as that of the third embodiment and the fourteenth embodiment except for the ON width modulation method based on the three-point comparison within the half cycle of the AC power supply described in the present embodiment.
  • FIG. 24 is a circuit block diagram of the rectifier circuit device according to the present embodiment.
  • the circuit configuration in FIG. 24 is obtained by replacing the current detection circuit 7 in the circuit configuration in FIG. 6 with a current transformer 70, a full-wave rectifier circuit 71, and a smoothing circuit 72.
  • the control circuit 11 recognizes the load state in accordance with information from the full-wave rectifier circuit 71 and the smoothing circuit 72 and operates efficiently, and Control to prevent damage to equipment due to excessive load.
  • the output of the full-wave rectifier circuit 71 is input to the control circuit 11.
  • This input waveform has a form in which the waveform of the detection current shown in FIG. 7 is repeated.
  • This embodiment has a problem that a direct current component cannot be detected and a problem that distortion caused by passing through the full-wave rectifier circuit 71 is included.
  • the current phase can be brought close to the voltage phase and substantially matched.
  • the present embodiment has a problem that distortion increases when the current is small.
  • class A of IEC61000-3-2 requires that the harmonic current be kept below a certain level within the operating range.
  • a simple power transformer can be used to realize a rectifier circuit device with low power supply harmonics and high power factor.
  • control circuit 11 other than the portion related to the input current information described in the present embodiment is the same as that in the third embodiment, the fourteenth embodiment, and the seventeenth embodiment.
  • FIG. 25 is a circuit block diagram of a rectifier circuit device according to a nineteenth embodiment of the present disclosure.
  • the difference between the present embodiment and the first embodiment is that a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 21, and the control circuit 11 is replaced with the control circuit 21. And the calculation formula of the short circuit time ratio D is different. The differences will be described below.
  • the input voltage detection circuit 15 detects instantaneous voltage information of the AC power supply 1.
  • the harmonic extraction circuit 16 extracts components other than the fundamental wave component from the voltage information of the AC power supply 1. This harmonic component information is used to calculate the short-circuit time ratio D of the drive pattern for the semiconductor switch 3a or 3b.
  • the current flowing through the smoothing capacitor 9 is detected by the current detection circuit 7 and smoothed by the smoothing circuit 8.
  • the control circuit 21 sends a drive control signal to the semiconductor switch drive circuits 4a and 4b using the polarity information, the harmonic component information, and the smoothed power information of the AC power supply 1, and any one of the semiconductor switches 3a and 3b. Controls short-circuiting and opening using The smoothed power information is obtained from the DC-side current information detected by the current detection circuit 7 and smoothed by the smoothing circuit 8, and the DC voltage information.
  • the semiconductor switch 3b is used to short-circuit and open.
  • the current stored in the reactor 2 at the time of a short circuit is sent to the smoothing capacitor 9 via the diode 6c at the time of opening.
  • the harmonic extraction circuit 16 is composed of a high-pass filter for removing the fundamental wave component from the voltage information of the AC power supply 1. Since the configuration of the high-pass filter is a general technique, a detailed description thereof is omitted.
  • the method of reducing the influence of the distortion included in the waveform of the power supply voltage on the input current by the method of reflecting the waveform of the input voltage in the drive pattern has been described.
  • the influence of the distortion included in the waveform of the power supply voltage on the waveform of the input current can be more effectively eliminated than in the first embodiment.
  • the treatment of the amount of electric power detected in the first half and the second half of each half cycle of the AC power supply, the method of reflecting it in the phase, and the control method for keeping the DC voltage constant are the same as in the first embodiment.
  • the short circuit time ratio D will be described.
  • the electrical angle ⁇ of the AC power source when the fundamental component of the voltage of the AC power source is sin ( ⁇ ), the harmonic component extracted by the harmonic extraction circuit 16 is Vac_harm ( ⁇ ), and the DC voltage is Vdc, the electrical angle
  • the short-circuit time ratio D of the semiconductor switch drive pattern in the vicinity of ⁇ is set by the following equation (10).
  • the coefficient A is adjusted by the difference between the DC voltage and the target value
  • the phase delay ⁇ is adjusted by the difference in power between the first half and the second half every half cycle. Since the short circuit time ratio D is a value of 0 or more and 1 or less, it is set to 1 when the right side value exceeds 1, and is set to 0 when the right side value is less than 0. As a result, the input current has a waveform without distortion.
  • the DC voltage control method and the phase adjustment method using information from the DC voltage detection circuit 14 and the smoothing circuit 8 are the same as those in the first embodiment.
  • the fundamental wave component has been described as a sine wave as an example of a formula for obtaining the short circuit time ratio D, it is not limited to this.
  • harmonic extraction circuit 16 has been described as being configured by a high-pass filter that removes the fundamental wave component from the voltage information of the AC power supply 1, it may be a filter that extracts an arbitrary harmonic component.
  • FIG. 26 is a circuit block diagram of a rectifier circuit device according to a twentieth embodiment of the present disclosure.
  • the difference between the present embodiment and the second embodiment is that a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 21, and the control circuit 11 is replaced with the control circuit 21.
  • the calculation formula of the short circuit time ratio D is different.
  • the method of using the harmonic extraction circuit 16 and the calculation formula for the short-time ratio D are the same as those in the nineteenth embodiment.
  • the control circuit 21 receives the output of the polarity detection circuit 12 (polarity information), the output of the DC voltage detection circuit 14 (DC voltage information), and the output of the harmonic extraction circuit 16 (harmonic component information).
  • the DC voltage control method and the method for performing phase adjustment using information from the DC voltage detection circuit 14 are the same as those in the second embodiment.
  • this embodiment does not require a current detecting means, it can be realized more easily than the configuration of the nineteenth embodiment.
  • FIG. 27 is a circuit block diagram of a rectifier circuit device according to a twenty-first embodiment of the present disclosure.
  • the difference between the present embodiment and the third embodiment is that a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 21, and the control circuit 11 is replaced with the control circuit 21.
  • the calculation formula of the short circuit time ratio D is different.
  • the method of using the harmonic extraction circuit 16 and the calculation formula for the short-time ratio D are the same as those in the nineteenth embodiment.
  • the control circuit 21 outputs the polarity detection circuit 12 (polarity information), the DC voltage detection circuit 14 (DC voltage information), the current detection circuit 7 (current information), and the harmonic extraction circuit 16 (harmonic). Component information).
  • the DC voltage control method and the phase adjustment method using information of the current detection circuit 7 are the same as those in the third embodiment.
  • FIG. 28 is a circuit block diagram of a rectifier circuit device according to a twenty-second embodiment of the present disclosure.
  • the nineteenth embodiment is configured by a separate circuit. Specifically, a harmonic is provided between the input voltage detection circuit 15 and the control circuit 11 as compared with the fourth embodiment. An extraction circuit 16 is added, and the control circuit 11 is replaced with a control circuit 21.
  • the AC power source 1 is short-circuited through the reactor 2 using the semiconductor switch 3.
  • the energy stored in the reactor 2 is sent to the smoothing capacitor 9 via the diodes 6a, 6b, 6c and 6d.
  • the zero-cross detection circuit 13 is used as information on the input side of the rectifier circuit device. It is sufficient if the zero-cross information by and the harmonic component information contained in the input voltage by the harmonic extraction circuit 16 are available.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using information from the smoothing circuit 8 are the same as in the fourth embodiment.
  • the zero cross information and the harmonic extraction circuit by the zero cross detection circuit 13 are used as information on the input side of the rectifier circuit device. It is sufficient if the harmonic component information contained in the input voltage by 16 is available.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using the information of the DC voltage detection circuit 14 are the same as in the fifth embodiment.
  • FIG. 29 is a circuit block diagram of a rectifier circuit device according to the twenty-fourth embodiment.
  • the present embodiment is configured by a circuit further different from the above-described twenty-second embodiment.
  • the circuit between the input voltage detection circuit 15 and the control circuit 11 is different.
  • a harmonic extraction circuit 16 is added, and the control circuit 11 is replaced with a control circuit 21.
  • the AC power supply 1 is rectified by the diodes 6a, 6b, 6c, and 6d, and then short-circuited by the semiconductor switch 3 through the reactor 2.
  • the energy stored in the reactor 2 is sent to the smoothing capacitor 9 via the diode 5.
  • the information on the input side of the rectifier circuit device is zero cross information by the zero cross detection circuit 13 and the harmonic extraction circuit 16 as in the above-described twenty-second embodiment. It is sufficient if the harmonic component information contained in the input voltage is available.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using information from the current detection circuit 7 and the smoothing circuit 8 are the same as in the sixth embodiment.
  • the current detection circuit 7 and the smoothing circuit 8 are omitted, and the information of the DC voltage detection circuit 14 is used.
  • the same control as 20 is realized.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11, and the control circuit 11 is replaced with the control circuit 21.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the method of performing phase adjustment using information of the DC voltage detection circuit 14 are the same as in the seventh embodiment.
  • FIG. 30 is a circuit block diagram of a rectifier circuit device according to the twenty-sixth embodiment.
  • the current detection circuit 7 is moved to the AC side, and the smoothing circuit 8 is omitted.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11, and the control circuit 11 is replaced with the control circuit 21.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using information of the current detection circuit 7 are the same as in the eighth embodiment.
  • FIG. 31 is a circuit block diagram of a rectifier circuit device according to the twenty-seventh embodiment.
  • the current detection circuit 7 is moved to the AC side, and the smoothing circuit 8 is omitted.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11 with respect to the ninth embodiment, and the control circuit 11 is replaced with a control circuit 21.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using information of the current detection circuit 7 are the same as those in the ninth embodiment.
  • FIG. 32 is a circuit block diagram of the rectifier circuit device according to the twenty-eighth embodiment.
  • the current detection circuit 7 is moved into a loop constituted by the diodes 6a, 6b, 6c, 6d, the reactor 2, and the semiconductor switch 3 in the embodiment 24 described with reference to FIG. Is.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11 with respect to the tenth embodiment, and the control circuit 11 is replaced with a control circuit 21.
  • Embodiment 27 the same control as that of Embodiment 27 can be realized.
  • the operations of the control circuit 21 the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using the information of the current detection circuit 7 are the same as in the tenth embodiment.
  • FIG. 33 is a circuit diagram of a rectifier circuit device according to a twenty-ninth embodiment of the present disclosure.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11 with respect to the eleventh embodiment, and the control circuit 11 is replaced with a control circuit 21.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using the information of the voltage detection circuit 19 are the same as those in the eleventh embodiment.
  • 34A and 34B are waveform diagrams showing the operation of the present embodiment. Since this waveform diagram is also the same as the waveform diagrams shown in FIGS. 15A and 15B related to Embodiment 11, the description thereof is omitted.
  • FIG. 35 is a circuit diagram illustrating a rectifier circuit device according to a thirtieth embodiment of the present disclosure.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11 with respect to the twelfth embodiment, and the control circuit 11 is replaced with a control circuit 21.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using the information of the voltage detection circuit 119 are the same as those in the twelfth embodiment.
  • FIG. 36 is a circuit diagram illustrating a rectifier circuit device according to a thirty-first embodiment of the present disclosure.
  • a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11 with respect to the thirteenth embodiment, and the control circuit 11 is replaced with a control circuit 21.
  • the reactor 2 is directly connected to one end of the AC power source 1 as in the above-described FIG.
  • the semiconductor switch 3 is connected between the output of the reactor 2 and the other end of the AC power source 1 and has a circuit configuration for directly short-circuiting the AC power source 1 and the reactor 2.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as those in the nineteenth embodiment.
  • the DC voltage control method and the phase adjustment method using information from the voltage detection circuit 119 are the same as those in the thirteenth embodiment.
  • FIG. 37 is based on the same basic circuit configuration as that of Embodiments 19, 20, and 21 shown in FIGS. 25, 26, and 27, respectively.
  • FIG. 37 shows a state in which the terminal to which the reactor 2 is connected is a positive potential among the two output terminals of the AC power supply 1 in these circuit configurations described above. Since the operation in the state shown in FIG. 37 is the same as that of the fourteenth embodiment, detailed description thereof is omitted.
  • the potential difference between both ends of the reactor 2 needs to be approximately a sine wave.
  • Vpwm Since the voltage Vac at one end of the AC power supply 1 is a sine wave, the voltage Vpwm at the other end of the AC power supply 1 also needs to be approximately a sine wave. If voltage losses of the semiconductor switches 3a and 3b and the diodes 6b and 6c are sufficiently small and can be ignored, Vpwm is considered to be obtained by the following equation (3).
  • Vpwm Vdc ⁇ A ⁇ sin ( ⁇ ) + Vac_harm ( ⁇ ) (12)
  • the fundamental component of Vpwm cannot be said to be a sine wave as it is.
  • the fundamental wave component of Vpwm is a sine wave.
  • the coefficient A1 shown in the following formula (8) may be used instead of the coefficient A of the arithmetic expression used in the first embodiment, the second embodiment, and the eleventh embodiment.
  • FIG. 19 is a waveform diagram for explaining the flow of this process.
  • the actual DC voltage (Vdc) and the set DC voltage (Vdc *) are compared by the comparison circuit 201 to obtain a temporary coefficient A that is a result of temporary short-circuit time ratio adjustment. It is done.
  • the readjustment circuit 202 performs the calculation of the above equation (8) using this temporary coefficient A, and readjusts the short-circuit time ratio D. In accordance with the driving pattern using the coefficient A1 obtained in this way, short-circuiting and opening by the semiconductor switch are performed.
  • a coefficient A2 represented by the following equation (9) may be used as a method for simplifying instantaneous division. This method can also perform highly accurate correction.
  • FIG. 20 is a waveform diagram illustrating the flow of this process, as in FIG. 20, the difference from FIG. 19 is that the readjustment circuit 207 performs the calculation of the above equation (9) and readjusts the short-circuit time ratio D. According to the drive pattern using the coefficient A2 obtained in this way, short-circuiting and opening by the semiconductor switch are performed.
  • control circuit 21 in the nineteenth to thirteenth embodiments is the same as the contents described in the respective embodiments.
  • the basic configuration of the present embodiment is the same as FIG. 25 used in the description of the nineteenth embodiment.
  • the method for modulating the ON width by comparing the three points within the half cycle of the AC power supply is the same as in the fifteenth embodiment.
  • the readjustment method of the short circuit time ratio D is the same as that in the thirty-second embodiment.
  • the basic configuration of the present embodiment is the same as that of FIG. 26 used in the description of the twentieth embodiment.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as in the nineteenth embodiment.
  • the DC voltage control method and the method of performing phase adjustment using information of the DC voltage detection circuit 14 are the same as those in the twentieth embodiment.
  • the method for modulating the ON width by comparing two points in the first half or the second half of the half cycle of the AC power supply is the same as that in the sixteenth embodiment.
  • the readjustment method of the short circuit time ratio D is the same as that in the thirty-second embodiment.
  • the basic configuration of the present embodiment is the same as that of FIG. 27 used in the description of the twenty-first embodiment.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as in the nineteenth embodiment.
  • the polarity detection circuit 12, the DC voltage detection circuit 14, the DC voltage control method, and the phase adjustment using the information of the current detection circuit 7 and the current detection circuit 7 are the same as in the twenty-first embodiment.
  • the method for modulating the ON width by comparing the three points in the half cycle of the AC power supply is the same as that in the seventeenth embodiment.
  • the method for readjustment of the short circuit time ratio is the same as that in the thirty-second embodiment.
  • FIG. 38 is a circuit block diagram of the rectifier circuit device according to the present embodiment.
  • the basic configuration of the present embodiment is the same as that of the eighteenth embodiment except that a harmonic extraction circuit 16 is added between the input voltage detection circuit 15 and the control circuit 11, and the control circuit 11 is replaced with a control circuit 21. is there.
  • the method of using the harmonic extraction circuit 16 and the formula for calculating the short-time ratio D are the same as in the nineteenth embodiment.
  • the DC voltage control method and the method of performing phase adjustment using information from the current transformer 70, the full-wave rectifier circuit 71, and the smoothing circuit 72 are the same as in the eighteenth embodiment.
  • the method for modulating the ON width by comparing the three points in the half cycle of the AC power supply is the same as that in the seventeenth embodiment.
  • the method for readjustment of the short circuit time ratio is the same as that in the thirty-second embodiment.
  • each element in each embodiment is expressed as an electric circuit, but is not limited thereto, and may be configured by a microprocessor and software.
  • the rectifier circuit device does not use a high-speed and high-accuracy current detection unit, and the accuracy of the inductance of the reactor is not ensured, the load fluctuation is large, or the input Even in the case where distortion is included in the power supply voltage, an arbitrary DC voltage can be output, and a rectifier circuit device having a high power factor and less power harmonics can be realized.
  • the rectifier circuit device is a device that drives a DC load by converting a single-phase AC power source to DC, or by inversely converting once rectified DC power to AC power of an arbitrary frequency by an inverter circuit.
  • the present invention is widely applied to devices that drive electric motors, for example, devices that perform cooling, heating, or freezing.

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

Abstract

La présente invention concerne un dispositif de circuit redresseur qui détecte une puissance de sortie côté courant continu et ajuste une relation de phase entre la tension d'une alimentation en courant alternatif et le circuit de commande d'un interrupteur à semi-conducteur de telle façon que les valeurs de puissance détectées à l'étape initiale, à l'étape intermédiaire et à l'étape finale de chaque demi-cycle de l'alimentation en courant alternatif soient dans une plage prédéterminée ou un changement de la sortie côté courant continu soit dans une plage prédéterminée, et de telle façon que la puissance de sortie côté courant continu corresponde à une valeur cible. Le rapport de durée de court-circuit (D) du circuit de commande est déterminé par une équation telle que D=1-A×sin(θ-β)-Vac_harm(θ)÷Vdc (où Vac_harm(θ) est une information de distorsion incluse dans la tension d'entrée). Un coefficient (A) est ajusté par une différence entre une tension continue détectée et une valeur cible de tension continue et un retard de phase (β) est ajusté par une différence entre deux valeurs de puissance respectivement détectées dans la première moitié et dans la dernière moitié de chaque demi-cycle de l'alimentation en courant alternatif. L'invention concerne en outre la mise en œuvre d'un dispositif de circuit redresseur apte à réduire un courant harmonique sans détection de chaque courant instantané.
PCT/JP2015/000022 2014-01-09 2015-01-07 Dispositif de circuit redresseur WO2015105041A1 (fr)

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CN105917568A (zh) 2016-08-31
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JP6471357B2 (ja) 2019-02-20
CN105917568B (zh) 2018-10-16

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