WO2006087827A1 - 電源装置 - Google Patents
電源装置 Download PDFInfo
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- WO2006087827A1 WO2006087827A1 PCT/JP2005/008926 JP2005008926W WO2006087827A1 WO 2006087827 A1 WO2006087827 A1 WO 2006087827A1 JP 2005008926 W JP2005008926 W JP 2005008926W WO 2006087827 A1 WO2006087827 A1 WO 2006087827A1
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- power supply
- input current
- current
- main power
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
- H02M7/145—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 thyratron or thyristor type requiring extinguishing means
- H02M7/155—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/17—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2176—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 comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output
Definitions
- the present invention relates to a power supply device, and more particularly to a power supply device for the purpose of suppressing harmonic current and improving power factor.
- a standby circuit for example, a receiving circuit for receiving only a power-on signal from a remote controller
- a standby circuit for example, a receiving circuit for receiving only a power-on signal from a remote controller
- the conventional switching power supply circuit disclosed in Patent Document 1 includes a main power supply circuit that does not operate during standby and a sub-power supply circuit that operates to always supply excessive power even during standby. Some circuits and sub power circuit are configured to connect to AC power source.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-18842
- a device such as a television may require a power supply of various output voltages, and it is not normal to use the output of the sub-power circuit that is provided with power for standby only. There is also a desire to use it for other purposes while operating. In fact, the voltage required during standby is often + 5V or + 3.3V, for example, required to operate a simple digital circuit. There are various uses. For this reason, the power supply is designed so that it matches the power consumption during normal operation, not the power consumption during standby. In this case, the power supply capability of the sub power circuit is designed with a considerable margin.
- the sub power supply circuit does not include a harmonic current suppression circuit. For this reason, an increase in the amount of power supplied to the sub-power supply circuit means that if the amount of harmonic current generated increases, this will cause a fall.
- the present invention aims to solve the above-mentioned problems, and in addition to a main power supply circuit having a circuit equivalent to a harmonic current suppression circuit, a sub-power supply circuit having no harmonic current suppression circuit A power supply apparatus that can suppress the harmonic current as a whole and can improve the power factor at the same time while providing the appropriate power supply for the sub power supply circuit.
- the power supply device of the present invention has a main power supply circuit and a sub power supply circuit connected to an AC power supply, and the main power supply circuit includes an input current control circuit, The input current control circuit controls the input current of the main power supply circuit so that a harmonic current is suppressed in a total current of the input current of the main power supply circuit and the input current of the sub power supply circuit. .
- the power supply device of the present invention includes a main power supply circuit and a sub power supply circuit connected to an AC power supply, and the main power supply circuit includes an input current control circuit, and the input current control circuit Is configured to control the input current of the main power supply circuit so that the total current of the input current of the main power supply circuit and the input current of the sub power supply circuit is substantially proportional to the input voltage of the input current control circuit.
- the power supply device of the present invention includes a main power supply circuit and a sub power supply circuit connected to an AC power supply, and the main power supply circuit includes an input current control circuit, and the input power supply circuit
- the current control circuit includes a circuit current detection unit, and the circuit current detection unit is configured so that a total current of the input current of the main power supply circuit and the input current of the sub power supply circuit flows, and the input current
- the control circuit controls an input current of the main power supply circuit so that a harmonic current is suppressed in a current flowing through the circuit current detecting means.
- the power supply device of the present invention includes a main power supply circuit and a sub power supply circuit connected to an AC power supply, the main power supply circuit including an input current control circuit, and the input current control circuit is Circuit current detection means, and the circuit current detection means is configured so that a total current of the input current of the main power supply circuit and the input current of the sub power supply circuit flows, and the input current control circuit includes: The input current of the main power supply circuit is controlled so that the current flowing through the circuit current detection means is substantially proportional to the input voltage of the input current control circuit.
- the main power supply circuit includes a first rectifier circuit connected between the AC power supply and the input current control circuit, and the sub power supply circuit includes a second rectifier connected to the AC power supply.
- a smoothing circuit connected to the circuit and the output of the second rectifier circuit may be provided.
- a switch may be provided between the AC power supply and the first rectifier circuit.
- the main power supply circuit includes a first rectifier circuit connected between the AC power supply and the input current control circuit, and the sub power supply circuit is connected to an output of the first rectifier circuit.
- a backflow prevention diode and a smoothing circuit connected to the output of the backflow prevention diode may be provided.
- the input current control circuit is a boost converter. Further, the boost converter is connected between an inductance element having one end connected to one output terminal of the first rectifier circuit, and between the other end of the inductance element and the output terminal of the main power supply circuit. A diode, a switch element connected between the other end of the inductance element and the other output terminal of the first rectifier circuit, an output terminal of the main power supply circuit, and the other of the first rectifier circuit And a smoothing capacitor connected between the output terminal and the output terminal.
- the input current control circuit is a flyback circuit. It is characterized by being an inverter. Further, the flyback converter includes a transformer having one end of a primary winding connected to one output terminal of the first rectifier circuit, the other end of the primary winding, and the other end of the first rectifier circuit. A switch element connected between the terminals of the power supply circuit, a diode connected between one end of the secondary winding of the transformer and the output terminal of the main power supply circuit, the output terminal of the main power supply circuit, and the And a smoothing capacitor connected between the other end of the secondary winding.
- a sub-mode that does not include a harmonic current suppression circuit or a power factor correction circuit.
- the power supply circuit is provided and the load of the secondary power supply circuit is also a load current, the total current of the input current of the main power supply circuit and the input current of the secondary power supply circuit is approximately proportional to the input voltage of the input current control circuit. In this way, by controlling the input current of the main power supply circuit, it is possible to suppress the generation of harmonic current by making the input current substantially sinusoidal as a whole power supply device, and at the same time improve the power factor.
- FIG. 1 is a circuit diagram of an embodiment of a power supply device of the present invention.
- FIG. 2 is a characteristic diagram showing a schematic waveform image of voltage or current of each part when it is assumed that the power supply device of FIG. 1 includes only a main power supply circuit.
- FIG. 3 is a characteristic diagram showing a schematic waveform image of voltage or current at each part in the power supply device of FIG. 1.
- FIG. 4 is a circuit diagram of another embodiment of the power supply device of the present invention.
- FIG. 5 is a circuit diagram of still another embodiment of the power supply device of the present invention.
- FIG. 6 is a characteristic diagram showing the relationship between the input voltage and the input current in the power supply device of FIG.
- FIG. 7 is a characteristic diagram showing the relationship between input voltage and input current in a conventional power supply device.
- FIG. 8 is a circuit diagram of still another embodiment of the power supply device of the present invention.
- FIG. 9 is a circuit diagram of still another embodiment of the power supply device of the present invention.
- FIG. 10 is a circuit diagram of still another embodiment of the power supply device of the present invention.
- FIG. 1 shows a circuit diagram of an embodiment of the power supply device of the present invention.
- the power supply device 10 includes a main power supply circuit 11 and a sub power supply circuit 14.
- the main power circuit 11 is connected to the AC power source AC via the switch SW.
- the sub power circuit 14 is directly connected to the AC power source AC without going through the switch SW.
- a separate power circuit such as a DC-DC converter is connected to the output side of the main power circuit 11 and sub power circuit 14 as necessary. And a desired output voltage is obtained.
- the power supply circuit may be referred to as a main power supply circuit and a sub power supply circuit.
- the switch SW is for turning on and off the main power supply circuit 11 itself.
- the switch SW is turned off during standby, current is supplied only to the sub power supply circuit, thereby reducing power loss during standby. Can be achieved.
- the presence of the switch SW is not necessary for the present invention. Even if the main power supply circuit 11 is directly connected to the AC power supply AC without the switch SW. I do not care.
- the main power supply circuit 11 includes a full-wave rectifier circuit Dl that is a first rectifier circuit, a noise elimination capacitor Cl, and an input current control circuit 12.
- One input terminal of full-wave rectifier circuit D1 is connected to one end of AC power supply AC via switch SW, and the other input terminal is connected to the other end of AC power supply AC.
- the two output terminals of the full-wave rectifier circuit D1 are connected to the input current control circuit 12!
- the output of the input current control circuit 12 is the output of the main power supply circuit 11.
- a noise removing capacitor C1 is connected between the two output terminals of the full-wave rectifier circuit D1.
- the capacity of the capacitor C1 is sufficiently smaller than that used for smoothing 60Hz AC power supply, and there is virtually no smoothing function for fluctuations in AC power supply frequency.
- the input current control circuit 12 is generally called a harmonic current suppression circuit or a power factor correction circuit, and includes an inductance element Ll, a diode D2, a switch element Ql, a resistance Rl, and a smoothing circuit. Capacitor C2 and control circuit 13.
- the input current control circuit 12 is basically a boost converter (step-up chopper circuit). One end of the inductance element L1 is connected to one output terminal of the full-wave rectifier circuit D1, and the other end is connected to the anode of the diode D2. ing.
- the power sword of diode D2 is connected to one output terminal of main power circuit 11.
- the other end of the inductance element L1 that is, the connection point with the diode D2, is connected to one end of the switch element Q1.
- the other end of the switch element Q1 is connected to the other output terminal of the main power supply circuit 11, and is connected to the other output terminal of the full-wave rectifier circuit D1 through the resistor R1.
- a smoothing capacitor C2 is connected between the cathode of the diode D2 and the other end of the switch element Q1.
- the switch element Q 1 is turned on and off by the control circuit 13. Is controlled.
- the control circuit 13 is connected to one end (point a) of the inductance element L1, and detects the input voltage.
- the control circuit 13 is connected to both ends of the resistor R1 (points b and c from the full-wave rectifier circuit D1 side), detects the potential at both ends of the resistor R1, and determines the resistor R1 based on the difference. The magnitude of the flowing current is detected.
- the control circuit 13 is also connected to the force sword (point d) of the diode D2, and detects the output voltage of the input current control circuit 12.
- Many of these control circuits 13 are integrated into ICs for suppressing harmonic currents or improving power factor, such as Texas Instruments UC 1854 and Fairchild ML4821. This is a general control circuit.
- FIG. 2 shows a schematic waveform image of the voltage or current of each part of the power supply device 10, which is greatly simplified compared to the actual waveform.
- the control circuit 13 switches the switch element Q1 at a frequency much higher than the frequency of the AC power supply. If the frequency of the AC power supply is 50 Hz or 60 Hz, the switching frequency of the switch element Q1 is about 60 kHz, for example.
- the input current of the input current control circuit 12 is macroscopically a sinusoidal absolute current substantially proportional to the input voltage Va as indicated by la in FIG. Therefore, the current flowing into the full-wave rectifier circuit D1, that is, the input current of the main power supply circuit 11, becomes a sinusoidal current substantially proportional to the input voltage as indicated by lac in FIG. As a result, the generation of harmonic current is suppressed and at the same time the power factor is improved.
- Control circuit 13 is about 60k It has a built-in Hz oscillation circuit, and the switch element Ql is configured to turn on in synchronization with the signal output from this oscillation circuit.
- the switch element Q1 is in an on state. At this time, current flows through the inductance element L1 and the switch element Q1, and increases with time.
- the control circuit 13 detects the input voltage of the input current control circuit 12 and the current flowing through the resistor R1. In this case, the current flowing through the resistor R1 is equal to the current flowing through the inductance element L1, and the current flowing through the inductance element L1 is the input current of the main power circuit 11. Therefore, the control circuit 13 detects the input current of the main power circuit 11. Will be. Therefore, the resistor R1 is a circuit current detecting means in the present invention.
- the control circuit 13 Since the current flowing through the resistor R1 is equal to the current flowing through the inductance element L1, it increases in the same manner as the current flowing through the inductance element L1 while the switch element Q1 is on. When the current flowing through the resistor R1 reaches a value approximately proportional to the input voltage at that time (hereinafter referred to as a current setting value), the control circuit 13 turns off the switch element Q1.
- the current setting value is proportional to the input voltage
- the current setting value is low and the input voltage is high when the input voltage is low, for example, due to the phase of the AC power supply voltage.
- the current setting value also increases.
- this set value rises and falls depending on the output current of the main power supply circuit 11. In other words, when the output current is small (when the load of the main power supply circuit is light), the set value is low, and conversely when the average value of the output current is large (when the load of the main power supply circuit is heavy) As a result, the set value increases.
- This control is realized by the control circuit 13 detecting the output voltage of the input current control circuit 12 and raising or lowering the current set value so as to keep it constant.
- switch element Q1 When switch element Q1 is turned off, the current flowing through inductance element L1 decreases, and the current flowing through resistor R11 also decreases accordingly. The force that eventually becomes zero if the current flowing through the inductance element L 1 is left as it is. Since the switch element Q 1 is configured to turn on at a constant period, the control circuit 13 actually turns it on before it becomes zero. Switch Q 1 turns on. When the switch element Q1 is turned on, a current begins to flow again through the inductance element L1 and the resistor R1, and the above operation is repeated.
- the current that flows through the inductance element L1 does not become zero. Force that assumes a continuous type The current flowing through the inductance element LI becomes zero, and the switch element is turned on as a trigger, and the current starts to flow again. It may be a current discontinuous type in which the switch element turns on after a period of zero continues for a while and the current begins to flow again. The difference in the actual operation related to harmonic current suppression and power factor improvement is Absent. In addition, these modes may be switched depending on the load state of the main power supply circuit 11.
- the input current to the input current control circuit 12 is substantially proportional to the input voltage. Since the input current to the input current control circuit 12 is an AC power source current input to the full-wave rectifier circuit D1, this suppresses the generation of harmonic current. Also, the power factor is improved.
- the sub power supply device 14 includes a diode D3 that is a second half-wave rectification type rectifier circuit and a capacitor C3 that is a smoothing circuit.
- the anode of the diode D3 is connected to one end of the AC power source AC, and the power sword is connected to one output terminal of the sub power circuit 14 !.
- One end of the smoothing capacitor C 3 is connected to the power sword of the diode D 3, and the other end is connected to the other output terminal of the sub power circuit 14.
- the other end of the capacitor C3 is connected to the other end of the switch element Q1 of the main power supply circuit 11 in the present invention.
- the other end of the capacitor C3 is connected to the other end of the AC power supply AC via the resistor R1 of the main power supply circuit 11 and the full-wave rectifier circuit D1.
- the sub power supply circuit 14 not only the diode D3 which is the second rectifier circuit but also a part of the full wave rectifier circuit D1 of the main power circuit 11 is connected to the sub power circuit by making the connection as described above. It will function as 14 rectifier circuits.
- FIG. 3 shows a schematic waveform image of the voltage or current of each part of the power supply device 10 as in FIG. 2, and is greatly simplified compared to the actual waveform.
- the voltage waveforms indicated by Vac and Va are the same as those in FIG. [0038]
- the sub power supply circuit 14 includes a second half-rectifier type rectifier circuit and a smoothing circuit, and does not include a circuit corresponding to a harmonic current suppression circuit. Therefore, the current flowing into the AC power source AC power sub power circuit 14 is only half of one cycle of the AC frequency, and the force is limited to when the amplitude of the AC voltage is large. It becomes a pulse shape as shown by Id3. The pulse height increases as the output current of the sub power circuit 14 increases.
- the input current control circuit 12 performs switching of the switch element Q1 so that the total current becomes a value approximately proportional to the input voltage Va. Therefore, the sum of the current flowing from the AC power supply AC into the main power supply circuit 11 and the current Id3 flowing into the sub power supply circuit 14 becomes approximately proportional to the input voltage Va to the input current control circuit 12, and the generation of harmonic current is suppressed. At the same time, the power factor is improved.
- the waveform is substantially the same as when the sub power supply circuit 14 is not present. That is, the input current control circuit 12 functions as a harmonic current suppression circuit for the main power supply circuit 11 only.
- the AC power supply AC flows into the main power supply circuit 11 only as a result.
- the input current control circuit 12 operates so that the current decreases.
- the input current control circuit 12 does not function as a harmonic current suppression circuit for the main power supply circuit 11 only.
- the sum of the input current of the main power supply circuit 11 and the input current of the sub power supply circuit 14 becomes a current of an absolute value of a sine wave that is substantially proportional to the input voltage Va.
- the current flowing into the power supply device 10 from the AC power supply AC power becomes a sinusoidal current substantially proportional to the input voltage as shown by lac in FIG.
- the generation of harmonic current is suppressed, and at the same time the power factor is improved.
- the output current of the main power supply circuit 11 decreases if the input current of the main power supply circuit 11 is simply reduced although it is temporary. But, in reality, the current value (setting value) that is proportional to the input voltage that is the condition for turning off the switch element Ql in the input current control circuit 12 rises as a whole, and there is no input current to the sub power circuit 14 As the input current of the main power supply circuit 11 increases, the total current flowing into the main power supply circuit 11 as a whole cycle of the AC power supply does not change, so that the output current of the main power supply circuit 11 is insufficient. Absent.
- FIG. 4 shows a circuit diagram of another embodiment of the power supply device of the present invention.
- parts that are the same as or equivalent to those in FIG. 4 are the same as or equivalent to those in FIG.
- the diode D4 is provided between the force sword of the diode D3 and the other end of the AC power supply AC so that the diode D3 and the force sword are connected to each other.
- the diode D3 and the diode D4 constitute a full-wave rectification type second rectifier circuit
- the sub-power circuit 21 is constituted by the second rectifier circuit and the capacitor C3 which is a smoothing circuit.
- the second rectifier circuit included in the sub power supply circuit 21 is a full-wave rectifier type, and there is no difference from the power supply device 10 shown in FIG.
- FIG. 5 shows a circuit diagram of still another embodiment of the power supply device of the present invention.
- parts that are the same as or equivalent to those in FIG. 5 are the same as or equivalent to those in FIG.
- the main power supply circuit 11 is directly connected to the AC power supply AC without going through the switch. Furthermore, the anode of diode D3 of sub power circuit 14 is connected to one output terminal of full-wave rectifier circuit D1. That is, in the sub power circuit 14, the pulsating voltage after full-wave rectification by the full-wave rectification circuit D1 is passed through the diode D3, Output is obtained by smoothing with Densa C3.
- the circuit configuration of the sub power supply circuit 14 is the same as that of the power supply device 10 shown in FIG. 1, but the diode D3 is not for rectification, and is reversely directed toward the full-wave rectification circuit D1 by the voltage charged in the capacitor C3. It functions as a backflow prevention diode to prevent current from flowing.
- FIG. 6 shows the relationship between the input voltage and the input current actually measured in the power supply device 30 separately when the load of the main power supply circuit 11 is heavy (a) and light (b). If the load on the main power supply circuit is heavy, this means that the load current is large! /, So if the circuit is a conventional circuit, the ratio of the input current of the sub power supply circuit to the total input current is This means that wave currents are unlikely to occur. Conversely, a light load on the main power supply circuit means that the load current is small, which means that the ratio of the input current of the sub power supply circuit to the total input current is large and relatively high harmonic currents are likely to occur. . For comparison, FIG.
- the input current of the switching power supply circuit becomes a current waveform corresponding to the sine wave of the input voltage as shown in Fig. 7 (a).
- the part protruding from the top of the current waveform is due to the input current of the sub power circuit.
- the switching frequency of the switch element is approximately 1000 times that of the AC power supply, and the force is smoothed to some extent by the noise-reducing capacitor. Therefore, the fine vertical oscillation of the current waveform is considerably suppressed, and is almost invisible as the illustrated waveform.
- the input current of the switching power supply circuit becomes a current waveform corresponding to the sine wave of the input voltage as shown in FIG. 6 (a). .
- the portion protruding to the top of the current waveform is due to the input current of the sub power circuit, but as shown in Fig. 6 (a), the top of the current waveform due to the input current of the sub power circuit is projected. Is small. In other words, even when the load on the main power circuit is heavy, the harmonic current is suppressed and the power factor is improved.
- the power supply device 30 can suppress the generation of harmonic currents and improve the power factor at the same time as compared with the conventional circuit.
- the power supply device 20 shown in FIG. 4 is the same as the power supply device 30 in that the second rectifier circuit of the sub power supply circuit is a full-wave rectification type. Similar results can be obtained in experiments.
- the second rectifier circuit of the sub power supply circuit is a half-wave rectifier type. Unlike the power supply unit 30, the input current of the sub power circuit is generated every half cycle of the AC power supply. For this reason, although not shown in the figure, the half cycle of the AC power supply has the same waveform as that of the power supply 30 and the sub power circuit is implemented for the remaining half cycle. Because it does not exist qualitatively, the current waveform becomes a sine wave that is almost proportional to the voltage waveform.
- FIG. 8 shows a circuit diagram of still another embodiment of the power supply device of the present invention.
- parts that are the same as or equivalent to those in FIG. 8 are the same as or equivalent to those in FIG.
- the power supply device 40 shown in FIG. 8 includes a transformer T1 instead of the inductance element L1 in the power supply device 10, and the primary winding N1 is a position where the inductance element L1 was present in the power supply device 10. Is arranged.
- the diode D2 and the smoothing capacitor C2 in the power supply device 10 are connected to the secondary winding N2 of the transformer T1 to form a secondary side rectifying and smoothing circuit.
- the input current control circuit 42 is configured by the transformer Tl, the switch element Ql, the resistor R1, the diode D2, the smoothing capacitor C2, and the control circuit 13.
- This input current control circuit 42 basically stores energy in the transformer T1 when current flows in the primary winding N1, and current flows in the secondary winding when current does not flow in the primary winding. It is a flyback converter that extracts the stored energy.
- a main power supply circuit 41 is configured by adding a full-wave rectifier circuit D1 as a first rectifier circuit and a noise removing capacitor C1 to the first rectifier circuit.
- control circuit 13 is also connected to the point d which is the force sword of the diode D2, and detects the output voltage. However, since both are the primary side and the secondary side of the transformer T1, they are actually connected after some form of insulation.
- the rest of the configuration is the same as that of the power supply device 10.
- the configuration of the sub power supply circuit 14 is such that the other end of the capacitor C3 is connected to the other end of the switch element Q1, so that the other end of the capacitor C3 is main. It is connected to the other end of the AC power supply AC via the resistor R1 of the power supply circuit 41 and the full-wave rectifier circuit D1.
- the power supply device 40 configured as described above is the same as the power supply device 10 except that the input current control circuit 42 is configured as a flyback converter. That is, if there is no secondary power supply circuit 14, the input current control circuit 42 functions as a harmonic current suppression circuit for the main power supply circuit 41, and the input current from the AC power supply is made substantially sinusoidal to generate harmonic current. Is suppressed.
- the input current of the main power supply circuit 41 is controlled so that the total current flowing in for the source circuit 14 becomes substantially sinusoidal. As a result, the generation of harmonic current is suppressed, and at the same time the power factor is improved.
- FIG. 9 shows a circuit diagram of still another embodiment of the power supply device of the present invention. 9, parts that are the same as or equivalent to those in FIG. 8 are given the same reference numerals, and descriptions thereof are omitted.
- the main power supply circuit 41 is directly connected to the AC power supply AC without going through the switch. Furthermore, the anode of diode D3 of sub power circuit 14 is connected to one output terminal of full-wave rectifier circuit D1. That is, the sub power supply circuit 14 is configured by rectifying the AC power supply voltage after full-wave rectification by the full-wave rectification circuit D1 by the second rectification circuit comprising the diode D3 and smoothing it by the capacitor C3.
- FIG. 10 shows a circuit diagram of still another embodiment of the power supply device of the present invention.
- parts that are the same as or equivalent to those in FIG. 10 are the same as or equivalent to those in FIG.
- input current control circuit 62 included in main power supply circuit 61 includes control circuit 63 instead of control circuit 13 in power supply device 10.
- control circuit 63 has two input terminals. Except this point, it is the same as the main power supply circuit 11 of the power supply device 10.
- the sub power supply circuit 64 is directly connected to the AC power supply AC.
- the sub power circuit 64 includes a resistor R2 in addition to the second rectifier circuit formed of the diode D3 and the smoothing capacitor C3. Resistor R2 is the other end of capacitor C3 and AC power supply AC It is provided between the other end. Therefore, the same current as the current flowing through the diode D3, that is, the input current of the sub power supply circuit 64 flows through the resistor R2, and a voltage corresponding to the flowing current is obtained at both ends (point e and point f). The voltages at both ends are connected to the two additional input terminals of the control circuit 63, respectively.
- the control circuit 63 can detect the magnitude of the input current to the AC power supply AC power sub power supply circuit 64.
- the control circuit 63 is configured to detect not only the current flowing through the resistor R1 but also the current flowing through the resistor R2, and control the switching of the switch element Q1 based on the sum of both. As a result, the same control as that of the control circuit 13 in the power supply device 10 is performed.
- the current flowing through the sub power circuit can be detected by some method and the current of the main power circuit can be controlled based on the total value of the current flowing through the sub power circuit.
- the objectives of harmonic current suppression and power factor improvement can be achieved.
- a resistor is used as the circuit current detection means.
- other means such as a current coil may be used.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/595,276 US7719139B2 (en) | 2005-02-15 | 2005-02-17 | Power supply unit |
KR1020067006508A KR100758127B1 (ko) | 2005-02-15 | 2005-05-17 | 전원장치 |
CN2005800010695A CN1954483B (zh) | 2005-02-15 | 2005-05-17 | 电源单元 |
EP20050741455 EP1868285A1 (en) | 2005-02-15 | 2005-05-17 | Power supply device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005038230A JP3750690B1 (ja) | 2005-02-15 | 2005-02-15 | 電源装置 |
JP2005-038230 | 2005-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006087827A1 true WO2006087827A1 (ja) | 2006-08-24 |
Family
ID=36113762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008926 WO2006087827A1 (ja) | 2005-02-15 | 2005-05-17 | 電源装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7719139B2 (ja) |
EP (1) | EP1868285A1 (ja) |
JP (1) | JP3750690B1 (ja) |
KR (1) | KR100758127B1 (ja) |
CN (1) | CN1954483B (ja) |
WO (1) | WO2006087827A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7875989B2 (en) * | 2007-09-04 | 2011-01-25 | Lycoming Engines, A Division Of Avco Corporation | Power source for aircraft engine controller systems |
US8102165B2 (en) * | 2008-07-17 | 2012-01-24 | Fsp Technology Inc. | Means of eliminating electrolytic capacitor as the energy storage component in the single phase AD/DC two-stage converter |
JP5443364B2 (ja) * | 2008-09-01 | 2014-03-19 | 三菱電機株式会社 | コンバータ回路、並びにそれを備えたモータ駆動制御装置、空気調和機、冷蔵庫、及び誘導加熱調理器 |
JP4724248B1 (ja) * | 2010-03-15 | 2011-07-13 | 株式会社ナナオ | 電源装置 |
KR101141416B1 (ko) * | 2010-08-18 | 2012-05-04 | 삼성전기주식회사 | 시스템 효율을 개선한 전원 장치 |
JP5080665B2 (ja) * | 2011-02-24 | 2012-11-21 | 株式会社ナナオ | 電源装置 |
JP5811329B2 (ja) | 2011-07-08 | 2015-11-11 | 東芝ライテック株式会社 | 電源装置 |
KR20130090122A (ko) * | 2012-02-03 | 2013-08-13 | 삼성전자주식회사 | 가전기기의 전원 장치 |
WO2013187269A1 (ja) * | 2012-06-11 | 2013-12-19 | 株式会社村田製作所 | スイッチング電源装置 |
JP5853889B2 (ja) | 2012-07-11 | 2016-02-09 | 株式会社豊田自動織機 | 受電機器及び電力伝送システム |
WO2014196424A1 (ja) * | 2013-06-05 | 2014-12-11 | 株式会社村田製作所 | 電子装置およびワイヤレス電力伝送システム |
JP6150086B2 (ja) * | 2016-03-23 | 2017-06-21 | 東芝ライテック株式会社 | 力率改善回路及び電源装置 |
WO2019183427A1 (en) | 2018-03-22 | 2019-09-26 | Continental Motors, Inc. | Engine ignition timing and power supply system |
CN109660134A (zh) * | 2018-12-21 | 2019-04-19 | 佛山市汉立电子科技有限公司 | 电源电路及输入限制电阻确定方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH048167A (ja) * | 1990-04-25 | 1992-01-13 | Sharp Corp | 電子機器搭載型電源回路 |
JPH06121523A (ja) * | 1992-02-26 | 1994-04-28 | Fuji Xerox Co Ltd | 位相制御回路と直流安定化電源回路とを並設した機器の高調波抑制回路 |
JPH08191569A (ja) * | 1995-01-09 | 1996-07-23 | Fuji Xerox Co Ltd | 電源装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3463675B2 (ja) | 2001-06-29 | 2003-11-05 | ソニー株式会社 | スイッチング電源装置 |
-
2005
- 2005-02-15 JP JP2005038230A patent/JP3750690B1/ja active Active
- 2005-02-17 US US10/595,276 patent/US7719139B2/en active Active
- 2005-05-17 KR KR1020067006508A patent/KR100758127B1/ko active IP Right Grant
- 2005-05-17 CN CN2005800010695A patent/CN1954483B/zh active Active
- 2005-05-17 EP EP20050741455 patent/EP1868285A1/en not_active Withdrawn
- 2005-05-17 WO PCT/JP2005/008926 patent/WO2006087827A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH048167A (ja) * | 1990-04-25 | 1992-01-13 | Sharp Corp | 電子機器搭載型電源回路 |
JPH06121523A (ja) * | 1992-02-26 | 1994-04-28 | Fuji Xerox Co Ltd | 位相制御回路と直流安定化電源回路とを並設した機器の高調波抑制回路 |
JPH08191569A (ja) * | 1995-01-09 | 1996-07-23 | Fuji Xerox Co Ltd | 電源装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2006230057A (ja) | 2006-08-31 |
JP3750690B1 (ja) | 2006-03-01 |
KR20060103499A (ko) | 2006-10-02 |
CN1954483A (zh) | 2007-04-25 |
EP1868285A1 (en) | 2007-12-19 |
KR100758127B1 (ko) | 2007-09-13 |
US7719139B2 (en) | 2010-05-18 |
CN1954483B (zh) | 2010-12-01 |
US20090200870A1 (en) | 2009-08-13 |
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