KR100249763B1 - Power control apparatus and its method - Google Patents

Abstract

The present invention is to determine whether the current time is the time to operate the load, and accordingly control the peripherals as a whole, at the same time check the presence of the system failure and output the data according to the result and the supply to the load A sink signal detector for detecting and outputting a sink signal of an AC power source and a sync signal output from the sink signal detector and a standard sink signal output from the system controller are compared and judged, respectively, and triggered for a time corresponding to the error. A trigger signal generator for outputting a signal, a voltage switching unit for supplying a voltage to a coil during a period of the trigger signal output from the trigger signal generator, and a coil coupled to the coil of the voltage switching unit and supplied to a load due to magnetic flux linkage Consisting of a coil to regulate the voltage, Since the three-phase trigger signal is generated according to the three-phase synchronous signal supplied to the load through the current coil to regulate the voltage of the secondary voltage coil, a magnetic flux linkage occurs in the current coil so that the AC voltage supplied to the load is constantly maintained. The present invention relates to a power supply control apparatus and a method for controlling power and simultaneously reducing power loss.

Description

Power control device and method

The present invention relates to a power supply control apparatus and method for regulating an AC power supply voltage to be supplied to an AC load, and more particularly, three-phase according to a three-phase synchronization signal supplied to a load through a current coil of a primary transformer. Power control device and method for generating a trigger signal to regulate the voltage of the secondary side voltage coil to generate a magnetic flux linkage in the current coil to constantly control the AC voltage supplied to the load and to reduce power loss at the same time It is about.

A conventional power control device adjusts the output change by a tap switching method to change the secondary voltage in order to control the AC power to be supplied to the power and lighting device.

In the tap switching method, the secondary voltage is transformed by a constant number of taps, thereby causing a problem in that the load or the transformer is burned out due to the limitation of the microtransformation and the transient phenomenon occurring at the tap switching.

In addition, electric motors and lighting loads require a relatively high starting voltage for starting or lighting, and a relatively low AC power supply voltage is required during movement or lighting. There was a problem that causes the waste of its own power.

Accordingly, the present invention was created to solve the above-mentioned drawbacks, and an object of the present invention is to generate a three-phase trigger signal according to a three-phase synchronization signal supplied to a load through a current coil of a primary transformer. The present invention provides a power supply control device and a method for controlling the voltage of the secondary side voltage coil so that magnetic flux linkage occurs in the current coil to constantly control the AC voltage supplied to the load and reduce power loss.

In order to achieve the above object, the power supply control apparatus according to the present invention determines whether the current time is the time to operate the load, thereby controlling the peripheral devices as a whole, and at the same time checking whether there is a failure of the system. A system controller for outputting data according to the present invention, a sink signal detector for detecting and outputting a sink signal of AC power supplied to the load, a sink signal output from the sink signal detection unit, and data of a standard sync signal output from the system controller And a trigger signal generator for outputting a trigger signal for a time corresponding to the error, a voltage switching unit for supplying a voltage to a coil during a period of the trigger signal output from the trigger signal generator, and the voltage switching. It is coupled to the negative coil and wound and supplied to the load by the flux linkage. Is characterized by consisting of a coil to adjust the voltage.

On the other hand, the power control method according to the present invention, the first determination step of determining whether the system is operating normally by initializing the system, and the result of the determination in the first determination step, when the system is operating normally A second determination step of determining whether time is a load driving time, a sink signal detection step of detecting and outputting a sink signal of an input AC power when the current time is the load driving time as a result of the determination in the second determination step, and the sink signal The trigger signal generation step of comparing the sync signal detected in the detection step with the standard sync signal and outputting a trigger signal corresponding to the difference, and the trigger signal generated in the trigger signal generation step are connected to the power input line of the load. It consists of a voltage regulation step that continuously regulates the coil to regulate the voltage supplied to the load Characterized in that binary.

1 is a view showing an outline of a power supply control device according to the present invention.

Figure 2 is an exemplary view of a power supply control device according to the present invention.

3 is a flowchart for explaining the operation of the power supply control apparatus according to the present invention;

Explanation of symbols on the main parts of the drawings

10 ... System controller 20 ... Control time data storage

30 ... latch 40 ... unique address storage

50 ... Program storage 60 ... Data storage

70 Interface section 75 Buffer

80 ... sink signal generator 90 ... trigger signal generator

100 ... trip detection unit 110 ... logic combination unit

120 ... amplification unit 130 ... voltage switching unit

140 ... Load

Hereinafter, the present invention will be described in more detail with reference to the illustrated drawings.

1 is a view showing an outline of a power supply control apparatus according to the present invention, Figure 2 is an embodiment of a power control apparatus according to the present invention.

1 and 2, the constant voltage generator 5 is composed of a conventional rectifier circuit and a regulator to convert and output commercial AC power to the system drive power, the control time data storage unit 20 is a load 140 Memory device in which the time for turning on the lighting lamp is stored.

The system controller 10 is to determine whether the current time is the time to operate the load, thereby controlling the peripheral devices as a whole, and checking whether there is a failure of the system and outputting data according to the result. The unit 40 is composed of a memory in which the unique data of the power control device is stored.

On the other hand, the year-end calendar data storage unit 35 is composed of a memory element that stores the data corresponding to the year, month, day, day and time, the latch unit 30 is the data output from the system controller 10 And a plurality of D-type flip-flops serving as latch elements to output an address signal by latching the.

In addition, the interface unit 70 includes an interface for transmitting data corresponding to a test result of the system, a unique number, and data corresponding to the year, month, day, day of the week, and time to an external device, and the buffer 70. Is configured to buffer an address and supply it to an external device, and the display unit 15 is configured to externally display a result of the test of the system, the accumulated power, and the like by the system controller 10.

The sink signal detection unit 80 includes first, second and third signal signal detection circuits 82, 84 and 86 for detecting and outputting a sink signal of AC power supplied to the load 140. The sink signal detection circuit 82 includes a rectifier circuit BG1 for rectifying the voltage induced by the secondary coil of the transformer T1 connected to the R and S input lines of the primary coil by the primary coil. It consists of a photo sensor (PT1) to operate by the voltage output from the rectifier circuit (BG1) to output a sink signal, the second sink signal detection circuit 84 is the primary side coil is the input line of the three-phase AC power supply A photo sensor which operates by the rectifier circuit BG2 for rectifying the voltage induced by the secondary coil of the transformer T2 connected to the S and T input lines and the voltage output from the rectifier circuit BG2 to output a sink signal. PT2, and the third sync signal detection circuit 86 has a primary side The rectifier circuit BG3 rectifies the voltage induced by the secondary coil of the transformer T3 connected to the R and T input lines among the input lines of the three-phase AC power source and the voltage output from the rectifier circuit BG3. It consists of a photo sensor PT3 that operates to output a sync signal.

On the other hand, the trigger signal generator 90 is the sync signal output from the first, second, third sync signal detection circuits 82, 84, 86 and the data of the standard sync signal output from the system controller 10 And a plurality of microcomputers (92) (94) (96) for outputting a trigger signal for a time corresponding to the error.

The logic combination unit 110 combines the trigger signals on the R, S, and T outputs from the trigger signal generator 90 with the data output from the trip detection unit 100, which is operated when the circuit is shorted. It consists of end gates A1 (A2) and A3 so as to block the operation of the system.

In addition, the voltage switching unit 130 sets the voltage output from the amplifying unit 120 to amplify the R, S, and T trigger signals output from the logic combination unit 110, respectively, and the low voltage and the two switching voltages. The output transformers T4, T5, T6 and rectifying diodes D1, D2, D3, D4, D5, D6, and the high and low voltages are supplied to both terminals, Coils L1, L3, L5, and windings of coils L2, L4, L6 passing through a three-phase AC power supplied to 140, and the amounts of the coils L1, L3, L5. It is composed of thyristors S1, S2, S3, S4, S5, S6, which are coupled to the terminal in a reverse direction and are operated by switching voltages output from the transformers T4, T5, T6.

The operation of the power supply control device having the above embodiment will be described in detail with reference to the flowchart shown in FIG. 3.

Step 3 of FIG. 3 after supplying three-phase AC power (R, S, T) to the power control device in a state in which a lighting lamp, which is a load 140, is connected to the power control device according to the present invention as shown in FIGS. 1 and 2. When the system of the power supply control device is initialized as in S10, the system controller 10 determines in step S11 whether the system is in a normal state.

If it is determined in step S11 that it is not a normal state, the data output ports D0-D7 supply predetermined control data to the address input ports A9-A16 of the address storage unit 40 via the latch unit 30, and then the system. The unique address of the system is read and temporarily stored in the data storage unit 60, and at the same time, the lead signal is supplied to the later-year calendar data storage unit 35 to supply the unique address and date of the system and the corresponding error message to the interface unit 70. As shown in step S16, it is sent out to the computer which is an external device, and it is possible to know whether the power supply control device is broken at a specific place.

On the other hand, if it is determined in step S11 that the system is normal, it is determined whether the current time is the lamp lighting time of the load 140 stored in the control time data storage unit 20. As a result, if the lamp lighting time is not the same as in step S17, The power supply line is switched so that power is not supplied to the load 140. If the lighting time is reversed, the sink signal detection unit 80 detects the sync signal of the three-phase AC power as in step S13. That is, the first, second, and third sync signal detection circuits 82, 84, and 86 of the sync signal detector 80 have primary coils in the R, S, and T input lines of the three-phase AC power input line. After rectifying the voltage induced in the secondary coil of the transformer connected to the two lines in the rectifier circuit, the photo sensor is operated to detect and output the R, S, and T sink signals.

The R, S, and T sync signals output from the sync signal detector 80 are supplied to the microcomputers 92, 94 and 96 of the trigger signal generator 90 to be output from the system controller 10. The data is compared and judged, and the trigger signal is output for the time corresponding to the error as shown in step S14, and the power factor and integrated power are calculated and displayed on the display unit 15 shown in FIG.

The trigger signals of R, S, and T output from the trigger signal generator 90 are respectively input to one input terminal of the AND gates A1, A2, and A3 of the logic combination unit 110 to trip the detection unit 100. The logic is combined with the data output from and supplied to the amplifier 120. The trip detection unit 100 outputs data having a "low" level when the circuit of the system is disconnected, and when the circuit of the system is normal. The data with the "high" level is output.

Accordingly, when the circuit of the system is normal, the logic combination unit 110 outputs the trigger signal output from the trigger signal generator 90, amplifies the trigger signal to a predetermined level through the amplifier 120, and then switches the voltage 130. To the primary coils of transformers T4, T5 and T6.

When the three-phase trigger signals amplified by the amplifier 120 are respectively supplied to the primary coils of the transformers T4, T5, and T6, the secondary coils of the transformers T4, T5, and T6 are fed to the secondary coils. The low voltage and two switching voltages are induced and output, and the low voltage is supplied to both terminals of the coils L1, L3, and L5, respectively, and the switching voltage is the amount of the coils L1, L3, and L5. It is supplied to the gate terminals of the thyristors S1, S2, S3, S4, S5, S6, which are coupled in opposite directions to the terminals, so that the coils L2, L4 are wound and coupled to the coils L1, L3, L5. (L6) generates a flux linkage to adjust the voltage supplied to the lamp, which is the load 140, as in step S15.

According to the present invention described above, since the trigger signal is generated according to the synchronization signal supplied to the load through the current coil of the primary side transformer to regulate the voltage of the secondary side voltage coil, a magnetic flux linkage occurs in the current coil to supply the load. It is possible to control the AC voltage constantly while reducing power loss.

Claims (7)

A system controller that determines whether the current time is the time to operate the load, controls the peripherals as a whole, and checks whether there is a failure of the system and outputs data according to the result, and AC power supplied to the load. A sync signal detector for detecting and outputting a sync signal of the sync signal and a sync signal output from the sync signal detector and a standard sync signal output from the system controller, and then outputting a trigger signal for a time corresponding to the error. A trigger signal generation unit, a voltage switching unit for supplying a voltage to the coil during the period of the trigger signal output from the trigger signal generation unit, and a winding coupled to the coil of the voltage switching unit to supply a voltage to the load due to the magnetic flux linkage. Power control, characterized in that consisting of a coil to adjust Value. The power control device of claim 1, wherein the voltage switching unit is configured to operate by using a trigger signal output from an amplifier configured to amplify the trigger signal output from the trigger signal generator. 3. The amplifier of claim 2, wherein the amplifier for amplifying the trigger signal is connected to an output terminal of a logic combination circuit for combining a trip detector for detecting a short circuit and outputting data corresponding thereto and a trigger signal output from the trigger signal generator. Power control device. 4. The sink coil according to any one of claims 1 to 3, wherein the sink signal detector detects and outputs a sink signal of a three-phase alternating current power supplied to a load, and the primary coil is formed in the input line of the three-phase alternating current power supply. And a photo sensor PT1 operating by a rectifying circuit BG1 for rectifying a voltage induced by a secondary coil of a transformer T1 connected to an S input line and a voltage output from the rectifying circuit BG1 to output a sink signal. And a rectifying circuit (BG2) in which the primary side coil rectifies the voltage induced in the secondary coil of the transformer (T2) connected to the S and T input lines among the input lines of the three-phase AC power source. ) And a second sink signal detection circuit composed of a photo sensor PT2 operating by a voltage output from the rectifying circuit BG2 to output a sink signal, and a primary coil having R in an input line of a three-phase AC power supply. , T connected to the input line A third sink including a rectifying circuit BG3 for rectifying the voltage induced by the secondary coil of the switch T3 and a photo sensor PT3 operating by a voltage output from the rectifying circuit BG3 to output a sink signal. A power supply control device comprising a signal detection circuit. The trigger signal generator of claim 1, wherein the trigger signal generator compares the three-phase sync signal output from the sync signal detector with the standard sync signal output from the system controller, and outputs a trigger signal for a time corresponding to the error. Power control device, characterized in that consisting of a plurality of micom. The plurality of transformers and the plurality of transformers according to claim 1 or 2, wherein the voltage switching unit outputs the voltages output from the amplifying unit amplifying the R, S and T trigger signals at high, low and two switching voltages, respectively. Three rectifier diodes, a plurality of coils wound on a plurality of coils passing through a three-phase alternating current power supply to both terminals while the high and low voltages are supplied to both terminals, and a three-phase alternating current power supply supplied to the load And a thyristor which is a plurality of switching elements which are coupled to both terminals of a plurality of coils respectively wound and coupled to a plurality of coils in a reverse direction and operated by a switching voltage output from each transformer of the voltage switching unit. A first judging step of judging whether the system is operating normally by initializing the system; and a second judging whether the current time is a load driving time when the system is operating normally as a result of the judging in the first judging step. The sink signal detection step of detecting and outputting the sink signal of the input AC power when the current time is the load driving time as a result of the determination step and the second determination step, and the sink signal detected in the sink signal detection step are standard sync signals. The voltage supplied to the load by flux linking the coil connected to the power input line of the load using the trigger signal generation step of outputting the trigger signal corresponding to the difference and the trigger signal generated in the trigger signal generation step, in comparison with A power supply control method comprising a voltage adjusting step of adjusting.