KR101295817B1 - Adc switching mode power supply unit - Google Patents

Abstract

PURPOSE: An AC and DC switching mode power supply (SMPS) is provided to use the electricity efficiently, by supplying an AC power source and a DC power source at the same time. CONSTITUTION: An SMPS device is inputted with a commercial AC power source. The commercial AC power source is provided from an AC hot line L1, an AC neutral line L2_1 and a ground line L3. An electromagnetic interference (EMI) circuit changes the AC power source into a DC power source. A refrigerator module (210) uses the AC power source in the normal time. The refrigerator module operates by being supplied with the cross-flow power in case of power failure. [Reference numerals] (AA) Refrigerator

Description

AC and DC Switching Mode Power Supply {ADC SWITCHING MODE POWER SUPPLY UNIT}

The present invention relates to an alternating current and a direct current power supply, and more particularly, to supply an alternating current (AC) as well as a direct current power (DC) using commercial power and solar cell power, and in particular, to give priority to the power of the solar cell. By supplying as DC power or charging the battery, and after charging the battery, the extra power is converted into AC power through inverter to replace AC power of commercial power or transmit power to outside. Of course, the present invention relates to a DC and AC switching mode power supply (Switching Mode Power Supply) to effectively use the power of the solar cell.

With the recent heightened awareness of energy and environment, the importance of power generation and efficient use of alternative energy such as solar cells is emphasized, and the use of solar cells is increasing in each household. The development of technologies for power supplies that manage energy efficiently and efficiently is also increasing.

In general, a commercial power source is an HOT wire (+) that supplies a high voltage level to an AC power source, a neutral wire (-) that supplies relatively low power compared to the HOT wire (+), and human injury to electric shock or leakage. Although it is composed of ground wire (GND) to prevent the current, it is not possible to easily use direct DC power supply without each power converter suitable for load capacity from commercial power supply.

Some electrical and electronic products require AC power such as air conditioners, washing machines, refrigerators, etc., but there are also products that convert AC power into DC power. In the case of solar cells, DC power is generated, and most of the produced DC power is converted into AC power.

As described above, power conversion loss occurs due to switching loss of a power conversion device such as a converter and an inverter converting AC into DC or converting DC into AC.

However, the AC and DC power supply apparatus according to the present invention will be usefully used as follows.

For example, the power consumption time zone is heavily concentrated in each field, so in each home, a small amount of electricity generated by solar cells during the day is sent to the power company through a schedule contract with the power company, which leads to high power consumption. It will be able to supply power to industrial facilities or commercial facilities in the time zone, and in the evening time when a large amount of power is temporarily consumed, the AC and DC power supply of the present invention can use some of the power charged in the battery produced in each home. Could act as a huge battery.

The AC and DC power supply device of Korean Patent Application No. 10-2012-0089039 filed previously by the inventor of the present invention provides a device for simultaneously supplying AC power and DC power using a commercial power source and a battery. In addition to supplying the AC power and DC power at the same time as described above, the development of a system that can effectively use the power generated by the alternative energy solar cells is required.

Technical problem to be solved by the present invention, in order to solve the problems of the above description, while supplying AC power based on commercial power, while receiving a DC power from a solar cell which is alternative energy to charge the battery and at the same time the DC power is used It supplies power to various electronic products, and if there is insufficient power, it is to provide an AC and DC switching mode power supply device that can easily convert and use commercial AC power to DC power.

In addition, when the battery charge is completed by the power generated from the solar cell, which is an alternative energy, and the power consumption is low, the power of the produced solar cell is converted into alternating current so as to have a constant voltage level on the commercial power supply wire. It is to provide an AC and DC switching mode power supply having a function of enabling transmission to a utility company in conjunction with a grid.

AC and DC switching mode power supply of the present invention for achieving the above technical problem, SMPS device that is connected to the AC output terminal CN101 through the ground wire terminal receives the commercial AC power from the AC hot line, AC neutral line, ground line And an EMI circuit for converting the AC power applied to the AC output terminal CN101 into a DC power supply, a PFC circuit for applying the applied DC power to the switching elements Q203 and Q204 drain through the low pass filter LF201, and switching the DC power supply. The switching elements Q302 and Q303 applied to the drain of the device Q302 and oscillated by the drive IC U301 to trigger the gates of the switching devices Q302 and Q303 are configured in series to switch the DC power applied to the drain to the transformer T301 primary side. The DC voltage applied from the SMPS circuit passes through the sensor type resistor SR401 and enters the input terminal CN401PV. The input DC power supply of the MPPT circuit connected to the switching elements Q401 and Q402 drain and the current flowing through the sensor type resistors SR401, SR402 and SR403 control the circuit operation according to the programmed data and monitor the operation status through the network. Programming circuit with drive IC U501, constant voltage circuit for supplying stable IC power to inverter, inverter PFC circuit for converting and boosting DC voltage to AC voltage, and input DC power to AC power. Inverter stage circuit for converting, and if the normal AC power is supplied when the normal AC power supply, and during the power failure characterized in that it comprises a refrigerator module for operating by receiving the AC power (ADC Power).

In addition, the SMPS device is characterized by generating not only an AC power source having the required voltage level but also a DC power source using the commercial AC power and the power of the solar cell.

The SMPS device is characterized in that it further comprises a battery that is charged by receiving power from the solar cell.

The refrigerator module receives DC power from a cross-flow power line, and the DC power supplied through the transformer drive IC 901 flows a current to a source to rectify AC power, convert it into DC, smooth it, and output it to a stage circuit. In the PFC circuit and the stage circuit, the drive ICs U906 and U907 oscillate the phase, and sequentially trigger the gates of the switching elements Q909-Q912 to convert the DC power supplied to the drain into AC power and output the power. It uses AC power to output AC power to the power plug to socket SO901 to operate home appliances, and converts DC to AC automatically in case of power failure, and outputs to socket SO901 so that power flows even during power failure. Characterized in that the configuration.

The PFC circuit is characterized in that the boost diode is formed to provide a sufficient current supply.

The programming circuit first supplies solar power by programming, and insufficient power supplies commercial AC power to the SMPS circuit, and when solar power comes in after charging is completed, the inverter supplies power to the inverter and converts it into AC and transmits it to the outside. And the SMPS circuit is stopped.

The MPPT circuit includes a resistor for a current sensing sensor of a DC power supply flowing in a load circuit, and the AC power applied to the EMI circuit is applied to the rectifying diode through F101-L101 and L102-LF101. .

The cross-flow power input unit outputs a commercial AC power to the PLY901 when the normal power is supplied to the socket to operate the refrigerator module, and during power failure, the RLY901 is automatically switched to convert the DC input to the PLY901 into an AC power source to the socket. It is characterized in that the output.

The MPPT circuit is characterized in that for charging the battery according to the SMPS circuit and the external input DC power in accordance with the data and outputs the required DC power with the battery to the cross-flow power line.

The AC and DC switching mode power supply device according to the present invention, while supplying AC power and DC power based on commercial power, while charging the DC power of the solar cell as an alternative energy source to the battery, the DC power charged in the battery as it is Using or converting the DC power charged in the battery to AC power has the advantage that can be transmitted to the power company through the grid line connection.

In particular, it can supply AC power and DC power at the same time, can minimize the mutual power conversion loss between AC and DC, can promote the use of eco-friendly alternative energy, charge power to the battery or use extra power Power can be used efficiently because it can be transmitted by the power supply, there is an advantage that can be usefully used to receive power even in an emergency.

1 is a peripheral circuit diagram of an AC and DC switching mode power supply according to an exemplary embodiment of the present invention.
2 is a refrigerator module diagram as an AC and DC switching mode power supply peripheral circuit according to an embodiment of the present invention.
Figure 3 is a block diagram of the AC and DC switching mode power supply of the present invention.
Figure 4 is a detailed circuit diagram of each of the AC and DC power supply apparatus according to an embodiment of the present invention.
Figure 5 is an embodiment of the AC and DC switching mode power supply of the present invention.
Figure 6 is a detailed circuit diagram of each of the embodiments of the AC and DC switching mode power supply of the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In the following description, numerous specific details are shown, such as specific components, which are provided to aid a more general understanding of the invention, and the invention may be practiced without these specific details. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The present invention is supplied with power from a power supply that supplies AC and DC power at the same time, such as the AC and DC power supply of the domestic patent application No. 10-2012-0089039 previously filed by the inventor, Figure 4c of the present invention SMPS device 110-3 of the AC, AC and DC switching mode to generate a DC power as well as AC power having the required voltage level at the same time by using a commercial AC power and the power of an alternative energy source, and minimizes the power loss It relates to a power supply.

1, 2 and 3, the AC and DC SMPS device according to the present invention is supplied with a commercial AC power supply to the AC hot line L1, AC neutral line L2 and ground line L3, the cross-flow power of FIG. It is configured to be connected to AC input terminal CN101 through switch S10, neutral and ground terminal.

Also, the rechargeable battery 120 is connected to the CN301 battery IN terminal of FIG. 3, and the cross-flow power of DC and AC is applied to the internal wiring together with the ground through the hot ground terminal at the CN101 # 2 terminal of FIG. 3. CN101 # 5 is intended for use in 3-wire countries and is configured as an option.

Alternative energy, for example, solar power is connected through the CN401 PV input terminal of FIG. 3, and in case of an emergency, it may be connected to an automobile power source or another DC power source instead of solar power, and CN501 of FIG. Program updates and network connections.

As shown in Fig. 4A, the EMI circuit 110-1 is applied to CN101 # 3 and # 4, and an AC power source is applied to the 110-1 EMI circuit. The other terminal passes AC power through the capacitor CC101 to the cross-flow power line. The AC power applied to the EMI circuit 110-1 is applied to the BD101 which is a rectifying diode through the fuse F101-inductance L101 and the inductance L102-low pass filter LF101.

At this time, the power passing through L102 passes through the relay switch RLY101 / B and thermistor TH101. This circuit cuts off the power when the internal load is overloaded. The BD101 converts AC power into DC power and outputs the same to the PFC circuit 110-2.

As shown in FIG. 4B, the PFC circuit 110-2 applies the applied DC power supply to the drains of the switching elements Q203 and Q204 through the low pass filter LF201. R201, R202, R203, and R204 are voltage drop resistors and supply a comparison voltage to the drive IC U201 as in R205.

D201 is a boost diode for sufficient current supply, and U201 receives a comparison voltage with an output terminal and outputs an oscillation voltage according to a predetermined time constant to trigger the gates of Q203 and Q204 through switching elements Q201 and Q202. Then, a power of about 380V DC is boosted and output at both ends of the capacitor C207. R218, R219, R220, and R221 are voltage drop resistors and are configured to supply the output stage comparison voltage of U201 together with R222.

SMPS circuit 110-3 as shown in Figure 4c, the applied DC power is applied to the drain of the switching element Q302, to the oscillation trigger the gate of Q302, Q303 of the drive IC U301 Q302, Q303 is configured in series with the drain Switch the DC power applied to the primary side of transformer T301.

T301 Secondary side AC power output to # 4, # 5, # 6 is rectified with diode D305, D306 and divided into capacitors C320, C321, C322, C323, and C324 to output DC power for charging. R332, R333 and R334 are protective resistors.

AC power output to T301 # 7, # 8, # 9 is rectified with diodes D307 and D308, smoothed with capacitors C325 and C326, and drive ICs U302, C327, C328, R335, R336, R337 and R338, R339 and R340 OP301 / B is turned on / off according to time constant and OP301 / A is switched to adjust the oscillation voltage of U301 to output stable DC power supply.

Zener diode ZD301 half-wave rectifies the AC power applied from the EMI circuit to diode D101 and supplies the drive IC U301 START voltage through Q304-R320 constantly at the voltage drop across resistors R102, R103, and R104. The supplied DC power is supplied to the switching element Q307 through R331 and VCC_5.5V is supplied to the drive ICs U201 and U301 through the switching elements Q306 and Q305. Q309 is an AC power supply control circuit with OP304.

As shown in FIG. 4D, in the MPPT circuit 110-4, the charging DC voltage applied from the SMPS circuit passes through the sensor type resistor SR401, and the external input DC power source other than the solar power source or the automobile power source supplied from the CN401 PV INPUT terminal is the sensor type resistor SR402. It is applied to the drains of the switching elements Q401 and Q402 through the diodes D401 and D402. Q401 is connected in series between Q403 and ground, and Q402 is connected to Q404.

The drive IC U401 charges the battery connected to the load circuit by matching the SMPS circuit and external input DC power to the programmed data, and simultaneously outputs the required DC power along with the battery to the cross-flow power line.

R401 and R404 are MPPSET time constant splitting resistors, R402 and R403 are U401 power supply resistors, and U401 oscillates according to a predetermined time constant, and the gates of the switching elements Q401, Q402, Q403 and Q404 through R408, R409, R410 and R411 The DC power applied to the drain is triggered to output the DC power as described above through the R414-SR403 through the low pass filter LF401.

R414 is a sensor resistor that senses the current flowing through the load circuit, R415, R416, and R417 are time constant division resistors, and R412 and R413 are time constant resistors.

D403 and D404 are LED diodes indicating the state of charge, and SR403 is a resistor for the current sensing sensor of DC power flowing through the load circuit.

As shown in Fig. 4E, the programming circuit 110-5 controls the operation of the circuit according to the programmed data by the drive IC U501 to monitor the current flowing through the SR401, SR402, and SR403 current sensing resistors, and monitors the operation state through the network. To be.

The U502 is a power supply regulator dropout IC, while the Q501 supplies power for the power switch on the OP302 / B and OP302 / A. When the switch SW501 is turned on, the switching elements Q503 and Q502 operate to turn on OP303 / B to operate OP303 / A to operate the power supply of the SMPS circuit and the relay switch RLY101 as described above.

The external power supply, that is, solar power, is supplied first through programming, and the insufficient power supply commercial AC power through SMPS circuit.When solar power comes on after charging is completed, the inverter supplies power to convert into AC power and transmit it to the outside. However, the SMPS circuit using a commercial AC power supply is stopped through the switching elements Q309 and OP304 of the SMPS circuit 110-3 as described above.

In addition, if solar power is not turned on, power is not supplied to the inverter to prevent battery power consumption.

As shown in Fig. 4F, the constant voltage circuit 110-6 is a power supply circuit for supplying stable IC power to the inverter. RLY601 is an electronic relay switch for inverter control switch as described above. Drive IC U601 is a boost oscillation IC, which triggers the gate of Q601 to supply VCC_15V to the rear of diode D602, and drive IC U602 supplies VCC_5V by dropping VCC_15V.

As shown in Fig. 4G, the inverter PFC circuit 110-7 is a boosting circuit for converting DC12V or DC24V into AC120V or AC220V. The drive IC U701 oscillates at a predetermined time constant and triggers the gates of the switching elements Q705, Q706, Q707, Q708, Q709, and Q710 through the switching elements Q701, Q702, Q703, and Q704.

At this time, the DC power applied to the drain is switched between the sources and applied to the primary side of the transformer T701, and a high AC voltage is obtained on the secondary side, and the AC voltage is rectified through the diodes D703, D704, D705, and D706 to convert to DC. The capacitor is output to the capacitors C711, C712, and C713 through the low pass filter LF701.

As shown in Fig. 4H, the inverter stage circuit 110-8 converts the input DC power into AC power. In order to have the effect of combining the small power generated in various places, the same frequency should be used. Here, the AC frequency of the existing AC power is used.

Voltage drop is performed through transformer T801 and the primary and secondary are separated. Using diode D801, divide the power supply into + component and component, correct the waveform with resistance, supply it to synchronous signal to drive IC U801, and drive IC U801 outputs 60Hz oscillation voltage using XT801 to oscillate drive IC U802 and U803. .

At this time, the oscillation voltage is supplied by changing the phase of the oscillation voltage. U802 triggers the gates of the switching elements Q801 and Q802, and U803 triggers the gates of the switching elements Q803 and Q804 to sequentially switch the DC power applied to the drain to convert to AC power. Output through the low pass filter LF801.

The refrigerator module 210 of FIG. 5, which is an embodiment of the AC and DC switching mode power supply of the present invention, is a circuit for operating the refrigerator during a power failure. When AC power is normally supplied, it is operated by using AC power. In case of emergency such as power failure, it is automatically converted to operate by receiving AC power.

Referring to the refrigerator module 210 of FIG. 5 in more detail as follows.

Referring to the detailed view of the refrigerator module PFC circuit 210-1 of FIG. 6A, DC power is supplied from the cross-flow power line, oscillated in the drive IC U902, and switching element Q912 through switching elements Q913, Q914, Q910, Q912. When triggered on the gates of Q909, Q915, and Q916, the DC power supplied to the drain through the transformer T902 flows to the source.

In addition, AC power induced in the secondary side of the transformer T902 is rectified by diodes D907, D908, D905, and D906, converted into direct current, and smoothed by capacitors C918, C919, and C921, and output to the STAGE circuit 210-2.

As shown in Fig. 6B, the refrigerator module STAGE circuit 210-2 oscillates an alternating frequency with the crystal oscillator XT901 and outputs to the drive ICs U906 and U907 through the resistors R918 and R919.

U906 and U907 oscillate by dividing the phase to sequentially trigger the gates of the switching elements Q909, Q910, Q911, and Q912 to convert the DC power supplied to the drain into AC power and output the same.

The OP903 in FIG. 6A does not supply power to the circuit when the commercial AC power is normally supplied for the circuit power switch, and operates by supplying power only during power failure.

The refrigerator module RLY901 in FIG. 6C is a power switch relay switch, U903 is a drive IC, OP901 in FIG. 6B is a sensor switch, and DB901 and U902 are circuits for supplying the drive IC U905.

As shown in FIG. 6C, the refrigerator module ADC power input unit 210-3 outputs to the socket SO901 that commercial AC power is supplied between # 1 and # 2 of the relay switch PLY901 during normal power supply, and operates the refrigerator. When the relay switch RLY901 is automatically switched, DC power input between # 2 and # 3 of the power plug PL901 is converted into AC power and output to the socket SO901 to prevent food alteration caused by power failure. .

110: SMPS device 110-1: EMI circuit part
110-2: PFC circuit section 110-3: SMPS circuit section
110-4: MPPT circuit section 110-5: programming circuit section
110-6: constant voltage circuit section 110-7: inverter PFC circuit section
110-8: inverter stage circuit unit 210-1: refrigerator module PFC circuit
210-2: refrigerator module STAGE circuit 210-3: refrigerator module cross-flow power input unit
210: refrigerator module

Claims (10)

SMPS device 110 that receives commercial AC power from the AC hot line L1, AC neutral line L2, ground line L3 and is connected to the AC output terminal CN101 through a ground wire terminal;
EMI circuit 110-1 for converting AC power applied to the AC output terminal CN101 into DC power; and
A PFC circuit 110-2 for applying the DC power to the drains of the switching elements Q203 and Q204 through the low pass filter LF201; and
The switching elements Q302 and Q303 which apply a DC power supply to the drain of the switching element Q302 and oscillate in the drive IC U301 to trigger the gates of the switching elements Q302 and Q303 are configured in series to switch the DC power applied to the drain to the transformer T301 primary side. SMPS circuit 110-3; and
The DC voltage applied from the SMPS circuit 110-3 passes through the sensor type resistor SR 401, and the external input DC power supplied to the input terminal CN 401 PV is connected to the switching elements Q 401 and Q 402.
A programming circuit 110-5 having a drive IC U501 for controlling the operation of the circuit according to the programmed data by controlling the current flowing through the sensor type resistors SR401, SR402, SR403 and monitoring the operation state through a network;
A constant voltage circuit 110-6 for supplying stable IC power to the inverter;
An inverter PFC circuit 110-7 for converting a DC voltage into an AC voltage and stepping up; and
An inverter stage circuit (110-8) for converting input DC power into AC power; and
If normal, AC power is supplied when the AC power is supplied, and during the power outage, the refrigerator module 210 is operated by being supplied with AC power. AC and DC switching mode power supply, characterized in that it comprises a. The AC and DC switching mode power supply of claim 1, wherein the SMPS device 110 generates not only an AC power source having a required voltage level but also a DC power source using commercial AC power and solar cell power. . The AC and DC switching mode power supply of claim 1, wherein the SMPS device (110) further comprises a battery (120) charged by receiving power from a solar cell. The method of claim 1, wherein the refrigerator module 210 is supplied with a DC power from the cross-flow power line, DC power supplied through the transformer T901 drains the current to the source to rectify the AC power to convert to DC, PFC circuit 210-1 for smoothing and outputting to stage circuit 201-B; And
The stage circuit 201-2 oscillates the phases of the drive ICs U906 and U907 and sequentially triggers the gates of the switching elements Q909-Q912 to convert the DC power supplied to the drain into AC power and outputs the power. Power supply PL901 outputs AC power supply to socket S0901 to operate home appliances, and during power outage, automatically switches to DC to AC, and outputs to socket S0901 so that power flows even in power failure AC and DC switching mode power supply characterized in that it comprises a (210-3). 2. The AC and DC switching mode power supply of claim 1, wherein the PFC circuit (110-2) is provided with a boost diode to supply sufficient current. According to claim 1, The programming circuit 110-5 first supplies solar power by programming, the insufficient power supplies commercial AC power to the SMPS circuit (110-3), the solar power after charging is completed When the power supply to the inverter is converted into alternating current to be transmitted to the outside, the AC and DC switching mode power supply characterized in that for stopping the SMPS circuit (110-3). The AC and DC switching mode power supply of claim 1, wherein the MPPT circuit 110-4 includes a resistor for a current sensing sensor of a DC power flowing in a load circuit. The AC and DC switching mode of claim 1, wherein the AC power applied to the EMI circuit 110-1 is applied to the rectifying diode through the fuse F101-inductance L101 and the inductance L102-low pass filter LF101. Power supply. The AC power supply unit 210-3 outputs the AC power to the relay switch PLY901 when the normal power is supplied to the socket SO901 to operate the refrigerator module 210, and relays when the power failure occurs. Switch RLY901 is automatically switched to switch the direct current coming into the relay switch PLY901 into an AC power source and outputs to the socket SO901 AC and DC switching mode power supply. The method of claim 1, wherein the MPPT circuit 110-4 charges the battery 120 according to the SMPS circuit 110-3 and the external input DC power, and supplies the required DC power together with the battery 120. AC and DC switching mode power supply, characterized in that output to the cross-flow power line.

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