Power-saving power supply device

Abstract

To provide a power-saving power supply device for power saving.SOLUTION: A power-saving power supply device is configured to include a first transformer 10 connectable to an external power source 70, a second transformer 20 electrically connected to the first transformer 10 via connecting lines 10a and 10b, a smoothing capacitor 30 connected in parallel between connecting lines 20a and 20b, and a power regulator 40 electrically connected to the second transformer 20 via the connecting lines 20a and 20b and connectable to a load 50. According to the configuration, by changing the winding ratio of a primary coil 11 and a secondary coil 12 in the first transformer 10 and the number of arrangements of the primary coil of the second transformer 20, the ratio of suppressing the output of the external power source 70 for the power required in the load 50 can be changed to a desired value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power-saving power supply device capable of supplying power from an external power supply to a load. [Background technology]

[0002] Japanese Patent No. 6403568 (Patent Document 1) describes a power supply device applied for by the applicant of the present application, specifically a power supply device including a large-current power supply unit capable of supplying large-current power at a low voltage, a high-voltage power supply unit capable of supplying small-current power at a high voltage having a higher potential than the large-current power supply unit and having a smaller current value than the large-current power supply unit, a two-power fusion unit that generates fused power by fusing the low-voltage, large-current power supplied from the large-current power supply unit and the high-voltage, small-current power supplied from the high-voltage power supply unit, a total power smoothing unit that converts the fused power into smooth DC power, and a power regulator that adjusts the smooth DC power to any output.

[0003] This power supply device can supply a combined power that combines low-voltage, large-current power and high-voltage, small-current power to a load without using a storage battery or a small-current limiting circuit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6403568 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, in Japan, where power shortages are becoming serious due to unexpected weather changes such as extreme heat and cold waves, and rising fossil fuel prices against the backdrop of unstable global conditions, efforts are being made to conserve power not only in companies but also in homes. Although the power supply device described in the above publication can combine low-voltage, high-current power and high-voltage, low-current power in a simple circuit, there is still room for improvement in terms of power conservation.

[0006] The present invention has been made in view of the above, and has as its object to reduce power consumption. [Means for solving the problem]

[0007] In order to achieve the above object, the power-saving power supply device of the present invention employs the following means.

[0008] According to a preferred embodiment of the power saving power supply device of the present invention, a power saving power supply device capable of supplying power from an external power supply to a load is configured. The power saving power supply device includes a power output unit, a power smoothing unit connected to the power output unit, and a power regulator connected to the power smoothing unit and connectable to the load. The power output unit is capable of converting input power supplied from the external power supply into a first power having a first voltage higher than the input voltage supplied from the external power supply and a first current equivalent to a load current required by the load, and outputting the first power. The power smoothing unit is capable of converting the first power from the power output unit into smoothed DC power. The power regulator is capable of adjusting the smoothed DC power from the power smoothing unit to an arbitrary output and outputting the smoothed DC power to the load.

[0009] According to the present invention, the input power supplied from the external power source is converted by the power output unit into a first power having a first voltage higher than the input voltage supplied from the external power source and a first current substantially equal to the load current required by the load. The first power output by the power output unit is then converted by the power smoothing unit into smoothed DC power, which is then adjusted to an arbitrary output by the power regulator and output to the load. Therefore, the power required of the external power source to drive the load is less than the power required by the load. This allows for power savings.

[0010] According to a further embodiment of the present invention, the power saving power supply device further includes a power input unit having a first primary coil connectable to an external power supply and a first secondary coil connected to a power output unit, and capable of generating a second power of a first current at a second voltage lower than the input voltage. The power output unit converts the second power into the first power and outputs it.

[0011] According to this embodiment, the power from the external power supply can be further reduced, thereby achieving further power saving.

[0012] According to a further aspect of the energy-saving power supply device of the present invention, the power output section has a plurality of second primary coils arranged in a divided array and connected to the first secondary coil, and a second secondary coil capable of collecting the second power supplied to the second primary coils and outputting it as the first power. Here, each of the second primary coils may be configured with an equal number of equal turns.

[0013] According to this aspect, the power output unit can be realized with a simple configuration. Effect of the Invention

[0014] According to the present invention, power saving can be achieved. [Brief description of the drawings]

[0015] [Figure 1]1 is a schematic diagram showing an outline of the configuration of a power-saving power supply device 1 according to a first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Next, the best mode for carrying out the present invention will be described with reference to examples. EXAMPLES

[0017] 1, the power-saving power supply device 1 according to the embodiment includes a first transformer 10 connectable to an external power supply 70, a second transformer 20 electrically connected to the first transformer 10 via connection lines 10a and 10b, a smoothing capacitor 30 connected in parallel between the connection lines 20a and 20b, and a power regulator 40 electrically connected to the second transformer 20 via the connection lines 20a and 20b and connectable to a load 50. The external power supply 70 is preferably AC 100V to AC 440V.

[0018] As shown in FIG. 1, the first transformer 10 has a primary coil 11 and a secondary coil 12. The primary coil 11 has a pair of input terminals 11a, 11b connectable to an external power source 70. The secondary coil 12 has a pair of output terminals 12a, 12b. The ratio of the number of turns of the primary coil 11 to the number of turns of the secondary coil 12 is configured to be 1:1 to 2:1. This allows the first transformer 10 to generate power with a voltage 1 / 2 to 1 times the input voltage from the external power source 70 and a current 2 to 1 times the current from the external power source 70. The first transformer 10 corresponds to the "power input unit" of the present invention, the primary coil 11 corresponds to the "first primary coil" of the present invention, and the secondary coil 12 corresponds to the "first secondary coil" of the present invention.

[0019] As shown in FIG. 1, the second transformer 20 has four primary coils 21A, 21B, 21C, and 21D and a secondary coil 22. The primary coils 21A, 21B, 21C, and 21D each have a pair of input terminals 21a and 21b. The input terminals 21a and 21b of the primary coils 21A, 21B, 21C, and 21D are connected to the output terminals 12a and 12b of the secondary coil 12 of the first transformer 10 via the connection lines 10a and 10b. In other words, it can be said that the primary coils 21A, 21B, 21C, and 21D are connected in parallel to the secondary coil 12 of the first transformer 10. The primary coils 21A, 21B, 21C, and 21D are each configured to have the same number of equal turns. The secondary coil 22 has a pair of output terminals 22a and 22b. Moreover, the secondary coil 22 has a number of turns equal to the total number of turns of the primary coils 21A, 21B, 21C, and 21D. In other words, it can be said that the secondary coil 22 constitutes a power collector circuit that collects power from the primary coils 21A, 21B, 21C, and 21D by electromagnetic interaction between the secondary coil 22 and the primary coils 21A, 21B, 21C, and 21D. Here, the second transformer 20 corresponds to the "power output unit" of the present invention, the primary coils 21A, 21B, 21C, and 21D correspond to the "second primary coil" and "coil" of the present invention, and the secondary coil 22 is an example of an embodiment corresponding to the "second secondary coil" of the present invention.

[0020] The smoothing capacitor 30 converts the AC power from the second transformer 20 into DC power, and supplies the DC power to the power regulator 40. The smoothing capacitor 30 is an example of an embodiment corresponding to a "power smoothing unit" of this invention.

[0021] The power regulator 40 is a circuit that adjusts power, and may be, for example, a power conditioner, an inverter, a switching power supply device, a boost device, a battery charger, a servo, an amplifier, or the like.

[0022] Next, the operation of the energy-saving power supply device 1 of this embodiment thus configured will be described. For ease of explanation, the following description will be given assuming that the ratio of the number of turns of the primary coil 11 and the secondary coil 12 of the first transformer 10 is 2:1.

[0023] When an external power source 70 is connected to the input terminals 11a and 11b of the primary coil 11 of the first transformer 10, power P1 (voltage ACV1, current A1) from the external power source 70 is supplied to the primary coil 11. The power P1 (voltage ACV1, current A1) is converted to power P1 with a voltage ACV1×1 / 2 and a current A1×2 by electromagnetic action between the primary coil 11 and the secondary coil 12, and output to the output terminals 12a and 12b. The voltage ACV1 supplied from the external power source 70 to the primary coil 11 corresponds to the "input voltage" in the present invention, the voltage ACV1×1 / 2 output from the output terminals 12a and 12b of the first transformer 10 corresponds to the "second voltage" in the present invention, and the power P1 (voltage ACV1×1 / 2, current A1×2) output from the output terminals 12a and 12b of the first transformer 10 is an example of an embodiment corresponding to the "second power" in the present invention.

[0024] The power P1 (voltage ACV1×1 / 2, current A1×2) output from the output terminals 12a and 12b is supplied to the second transformer 20. Specifically, the power P1×1 / 4 (voltage ACV1×1 / 2, current A1×2×1 / 4) is supplied to the input terminals 21a and 21b of the primary coils 21A, 21B, 21C, and 21D. The power P1 / 4 (voltage ACV1×1 / 2, current A1×2×1 / 4) supplied to the primary coils 21A, 21B, 21C, and 21D is converted into the total collected power P1×4 (voltage ACV1×1 / 2×4, current A1×2×1 / 4×4) by the electromagnetic action between the primary coils 21A, 21B, 21C, and 21D and the secondary coil 22, and is output from the output terminals 22a and 22b. The voltage ACV1×1 / 2×4 output from the output terminals 22a, 22b of the second transformer 20 corresponds to the "first voltage" in the present invention, the current A1×2×1 / 4×4 output from the output terminals 22a, 22b of the second transformer 20 corresponds to the "first current" in the present invention, and the total power P1×4 output from the output terminals 22a, 22b of the second transformer 20 is an example of an implementation configuration corresponding to the "first power" in the present invention.

[0025] Then, the power P1×4 (voltage ACV1×1 / 2×4, current A1×2×1 / 4×4) output from the output terminals 22a, 22b is converted by the smoothing capacitor 30 into DC power P1×4 (DCV1×1 / 2×4, current A1×2×1 / 4×4) and supplied to the load 50 via the power regulator 40. The DC power P1×4 is an example of an embodiment corresponding to the smoothed DC power in the present invention.

[0026] In this way, according to the power-saving power supply device 1 of the present embodiment, the power P1 (voltage ACV1×1 / 2, current A1×2) from the external power supply 70 can be multiplied by four (power P1×4, voltage ACV1×2, current A1×2) and supplied to the load 50. In other words, according to the power-saving power supply device 1 of the present embodiment, it can be said that the power output from the external power supply 70 can be suppressed to 1 / 4 (25%) of the power required by the load 50. That is, according to the power-saving power supply device 1 of the present embodiment, the ratio of the number of turns of the primary coil 11 and the secondary coil 12 of the first transformer 10 and the number of primary coils (21A, 21B, 21C, 21D) arranged in the second transformer 20 can be changed to a desired value, thereby changing the suppression ratio of the output of the external power supply 70 relative to the power required by the load 50.

[0027] Next, a specific example of the power saving power supply device 1 of this embodiment will be described. The power required by the load 50 is 6000W (voltage DC 200V, current 30A), and the number of turns of the primary coil 11 and the secondary coil 12 of the first transformer 10 is 2:1. In this case, the power to be output to the output terminals 22a, 22b of the secondary coil 22 of the second transformer 20 is 6000W (voltage AC 200V, current 30A). In order to output 6000W of power (voltage AC 200V, current 30A) to the output terminals 22a, 22b, the power to be supplied to each of the primary coils 21A, 21B, 21C, 21D of the second transformer 20 is 6000W×1 / 4=1500W (voltage 200V×1 / 4=50V, current 30A×1 / 4=7.5A). That is, the power to be output to the output terminals 12a, 12b of the secondary coil 12 of the first transformer 10 is 1500 W (voltage 50 V, current 7.5 A x 4 = 30 A). Therefore, the power to be input to the input terminals 11a, 11b of the primary coil 11 of the first transformer 10, that is, the power to be output by the external power supply 70, is 1500 W (voltage 50 V x 2 = 100 V, current 30 A x 1 / 2 = 15 A).

[0028] As described above, with the power saving power supply device 1 of this embodiment, the power required by the load 50 is 6000W (voltage DC 200V, current 30A), while the power output from the external power supply 70 is 1500W (voltage 100V, current 15A), and the ratio of the power required by the external power supply 70 to the power required by the load 50 is 1500W / 6000W=1 / 4 (25%). In other words, with the power saving power supply device 1 of this embodiment, it can be said that the load 50 can be driven with four times the output of the external power supply 70.

[0029] In the energy-saving power supply device 1 of the embodiment, the second transformer 20 has four primary coils 21A, 21B, 21C, and 21D, but the present invention is not limited to this. The second transformer 20 may have any number of primary coils, as long as the number is two or more. Here, as an example, the ratio of the power required by the external power source 70 to the power required by the load 50 when the second transformer 20 has six primary coils will be described. The power required by the load 50 is 6000 W (voltage DC 200 V, current 30 A) as in the embodiment, and the number of turns of the primary coil 11 and secondary coil 12 of the first transformer 10 is 2:1 as in the embodiment.

[0030] In this case, the power to be output to the output terminals 22a, 22b of the secondary coil 22 of the second transformer 20 is 6000W (voltage AC 200V, current 30A), so the power to be supplied to each of the six primary coils of the second transformer 20 is 6000W×1 / 6=1000W (voltage 200V×1 / 6≈33.3V, current 30A×1 / 6=5A). That is, the power to be output to the output terminals 12a, 12b of the secondary coil 12 of the first transformer 10 is 1000W (voltage 33.3V, current 5A×6=30A). Therefore, the power to be input to the input terminals 11a, 11b of the primary coil 11 of the first transformer 10, that is, the power to be output by the external power supply 70, is 1000W (voltage 33.3V×2=66.7V, current 30A×1 / 2=15A).

[0031] As described above, when the second transformer 20 has six primary coils, the power required by the load 50 is 6000 W (voltage DC 200 V, current 30 A), while the power output from the external power supply 70 is 1000 W (voltage 66.7 V, current 15 A), and the ratio of the power required by the external power supply 70 to the power required by the load 50 is 1000 W / 6000 W=1 / 6 (16.7%). In other words, it can be said that the power-saving power supply device 1 of this embodiment can drive the load 50 with six times the output of the external power supply 70.

[0032] In the energy-saving power supply device 1 of the embodiment, the power of the external power supply 70 outputted via the first transformer 10 is converted into the power required by the load 50 using the second transformer 20, but the present invention is not limited to this. For example, the power of the external power supply 70 outputted via the first transformer 10 may be converted into the power required by the load 50 using a boost unit.

[0033] The present embodiment shows an example of a mode for carrying out the present invention, and therefore the present invention is not limited to the configuration of the present embodiment.

[0034] <Additional Notes> In consideration of the above-mentioned gist of the invention, the degradation index estimation method and the degradation index estimation program according to the present invention can be configured in the following aspects. (Aspect 1) "A power-saving power supply device capable of supplying power from an external power source to a load, a power output unit capable of converting input power supplied from the external power supply into a first power having a first voltage higher than the input voltage supplied from the external power supply and a first current equivalent to a load current required by the load, and outputting the first power; a power smoothing unit connected to the power output unit so as to be capable of converting the first power from the power output unit into smooth DC power; a power regulator connected to the power smoothing unit and connectable to the load so as to adjust the smoothed DC power from the power smoothing unit to an arbitrary output and output the adjusted smoothed DC power to the load; Equipped Power saving power supply. ” (Aspect 2) "The power supply device further includes a power input unit having a first primary coil connectable to the external power supply and a first secondary coil connected to the power output unit, and capable of generating a second power of the first current at a second voltage lower than the input voltage, The power output unit converts the second power into the first power and outputs the first power. The power-saving power supply device according to aspect 1. (Aspect 3) "The ratio of the number of turns of the first primary coil to the number of turns of the first secondary coil is 1:1 to 2:1. The power-saving power supply device according to aspect 2. (Aspect 4) "The power output unit has at least one second primary coil connected to the first secondary coil, and a second secondary coil capable of collecting the second power supplied to the second primary coil and outputting it as the first power. The power-saving power supply device according to aspect 2 or 3. (Aspect 5) "The second primary coil is arranged in a plurality of rows, and each row is configured with the same number of equal turns. The power-saving power supply device according to aspect 4. (Aspect 6) "The power output section has at least one boost unit capable of converting the first power from the power input section into the second power and outputting the second power. The power-saving power supply device according to any one of the first to third aspects. [Explanation of symbols]

[0035] 1 Power-saving power supply device 1 (power-saving power supply device) 10 First transformer (power input section, first transformer) 10a connecting wire 10b connecting wire 11 Primary coil (first primary coil) 11a Input terminal 11b Input terminal 12 Secondary coil (first secondary coil) 12a Output terminal 12b Output terminal 20 Second transformer (power output section) 20a connecting wire 20b connecting wire 21A Primary Coil (Second Primary Coil, Coil) 21B Primary coil (second primary coil, coil) 21C Primary coil (secondary coil, coil) 21D Primary coil (secondary coil, coil) 22 Secondary coil (secondary coil) 21a Input terminal 21b Input terminal 22a Output terminal 22b Output terminal 30 Smoothing capacitor (power smoothing section) 40 Power regulator (power regulator) 50 load (load) 70 External power supply (external power supply)

Claims

1. A power-saving power supply device capable of supplying power from an external power supply to a load, comprising: a power output unit capable of converting input power supplied from the external power supply into a first power having a first voltage higher than an input voltage supplied from the external power supply and a first current equivalent to a load current required by the load, and outputting the first power; a power smoothing unit connected to the power output unit so as to be capable of converting the first power from the power output unit into smooth DC power; a power regulator connected to the power smoothing unit and connectable to the load so as to adjust the smoothed DC power from the power smoothing unit to an arbitrary output and output the adjusted smoothed DC power to the load; Equipped Power saving power supply.

2. a power input unit including a first primary coil connectable to the external power supply and a first secondary coil connected to the power output unit, and capable of generating a second power of the first current at a second voltage lower than the input voltage; The power output unit converts the second power into the first power and outputs the first power.

2. The power saving power supply device of claim 1.

3. The power output unit includes a plurality of second primary coils arranged in a divided array and connected to the first secondary coil, and a second secondary coil capable of collecting the second power supplied to the plurality of second primary coils and outputting the collected power as the first power.

3. The power saving power supply device according to claim 2.

4. The second primary coils are each configured to have the same number of turns.

4. The power saving power supply device according to claim 3.

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