KR200363020Y1 - The control power saving equipments for surplus electric power which are used no point of contact-semiconductor elements - Google Patents

Abstract

The present invention detects input / output voltage, current, and power factor connected to primary and secondary excitation windings wound on highly efficient ring-type (troider) cores and compares and analyzes the detected values (20a, 20b, and 20c). The contactless semiconductor elements T1, T2, T3, T4, T1 ', T2', are formed by the control PCB (A) configured with the configured microprocessor 20 and the signal output unit 10 for sending control signals.

T3 ', T4') to convert and input the contacts (1, 2, 3, 4, 5, 6) between the main winding 100, the primary winding 200 and the secondary winding 300 The present invention relates to a surplus power control power saving device using a contactless semiconductor device in which surplus power is reduced by boosting or stepping down to a proper voltage according to a voltage.

Description

The control power saving equipments for surplus electric power which are used no point of contact-semiconductor elements}

The present invention relates to a power-saving device comprising a contactless semiconductor device controlled by a control PCB having a function of preventing overvoltage, undervoltage, and overcurrent configured to detect, compare, and analyze input / output voltage and power factor.

The conventional domestic standard supply voltage is regulated to be maintained and supplied as shown in Table 1 below according to the Electricity Business Law.

TABLE 1

Standard voltage Maintenance range 110 V 110V ± 6V (104 ~ 116V) 220 V 220V ± 13V (207 ~ 233V) 380 V 380V ± 38V (342 ~ 418V)

The supplied voltage is slightly different depending on the length of the wiring according to the installation location of the transformer of the KEPCO, the voltage drop rate may also be different for each customer. That is, power is supplied from the distribution transformer of one bank to each consumer, and the distribution transformer tab is supplied so that the voltage at the terminal consumer is maintained at 220V. However, the customer near the distribution transformer receives a supply voltage higher than 220V, resulting in overheating and malfunction of the electric equipment, blackening of the lighting equipment, etc., resulting in excessive power consumption and shortening the life of the electric equipment. In the case of electric equipment using 220V and 380V, there should be no abnormality within 198 ~ 242V and ± 342% and 342 ~ 418V voltage range. By using the allowable voltage characteristic that should be no problem for the normal operation of the equipment, it reduces the power consumption by lowering the supplied voltage to the minimum rated voltage of the load.

For example, a voltage-enhanced power saving device using a conventional single winding transformer using the above power saving principle is a 10V dropping method with reference to FIG. 1. The minimum voltage of 207V, which is within 220V ± 13V according to the KEPCO power supply regulation in the above Table 1, is out of the maintenance range of the supply voltage, which may cause abnormality in the load-side electric equipment.

A power saving device using a voltage step down using a conventional general tap-changing single winding transformer that solves the above problems detects a voltage in a voltage detection unit using a mechanical magnet contact and a relay contact as shown in the circuit configuration of FIG. 2. When the KEPCO power is above 217V, close the primary winding and open the secondary winding to drop the 10V voltage to maintain the lowest supply voltage of 207V, and at the voltage below 217V, the primary winding and the secondary winding By closing the voltage in series, the voltage drops to 5V and the voltage is maintained at 212V, the lowest voltage. However, when the KEPCO supply voltage is 211V or less, the output voltage becomes 20V or less, which is outside the KEPCO supply regulation maintenance range, resulting in load burnout due to low voltage in the load-side electric equipment. In addition, the switching of the tap from 10V to 5V or 5V to 10V is performed by opening and closing the mechanical contact of the magnet and relay connected to the primary winding and the secondary winding.

TABLE 2

Operation period (msec) Cycle Coil ON-Main Contact ON Coil OFF-Main Contact OFF system Magnet 10-75 9-65 19-140 1.5-8.4 relay 20-30 20-25 40-55 2.3-3.2

As shown in Table 2 above, if the excitation coil is momentarily opened by the operation and opening / closing time, an overvoltage of 4 to 10 times the supply voltage is generated in proportion to the number of turns of the main winding. In Fig. 1 below, when the contact point connected to the primary and secondary excitation windings is opened and closed, ① no problem occurs, and when ②, a small problem occurs. By sparking in the circuit, it generates surge and harmonics in the circuit, and the mechanical life of the power saving device is shortened, and the contact breaks during frequent opening and closing of the winding. Therefore, all the supply voltage is applied to the main winding, which causes a fire due to overheating of the coil due to the overcurrent of the main winding, which causes a serious damage to the load side and the power saving device, and closes the primary excitation winding at the moment selected by a few to prevent such overvoltage. At the same time, the short-circuit method of closing the secondary winding and opening the first winding is the secondary Short circuit current may occur due to the short circuit of the winding and serious damage may occur.

[Figure 1]

As described above, the electric winding cannot be operated stably with the mechanical tap-changing method of the excitation winding by the above method. As a safe and reliable method, there is an urgent need for an open / close power saving device controlled by a non-contact semiconductor device.

The present invention, in order to compensate for the problem of abnormality generated during the tap-changing as described above, the primary winding 200 and the secondary winding (300) in parallel with the main winding 100 in the same ring-type core with good efficiency At the beginning and end of each circuit), it detects high precision voltage and current on the input and output sides with a ring-shaped core with a tap leading out to the control PCB inlet (contacts 1,2,3,4,5,6). A microprocessor unit 20 having a microcomputer built therein that compares and analyzes the voltage detection PT (20c) and the microcurrent detection CT (20b) by using a voltage detection current and a contactless semiconductor device at zero points in a sinusoidal waveform of voltage and current. (T1, T2, T3, T4, T1 ', T2', T3 ', T4'), with control PCB (A) with signal output to send open / close signal, enables real-time LCD display function. In the power saving device method using mechanical contact, mechanical contact is opened when tap switch of excitation winding Waveforms in sine waves that periodically progress voltage and current using solid-state semiconductor devices to solve the problem of damaging electrical equipment by impacting load-side electrical equipment due to instantaneous overvoltage and overcurrent caused by closing time of several tens to hundreds of msec. Electronically switch taps at Omsec at zero to eliminate transient voltage fluctuations, frequency fluctuations, transient voltages, and electrical anomalies, providing a highly reliable, high-performance, silent power-saving power-saving power-saver that provides high-quality power. It was devised as the technical problem.

1 is a power saving device using a conventional single winding transformer

Figure 2 is a single-switch transformer power saving device of the tap-changing method using a conventional mechanical contact

3 is a circuit diagram showing a power control device according to the present invention

4 is a connection circuit diagram of each contact portion and a contactless semiconductor device of the present invention;

5 is a circuit diagram for voltage drop of 10V according to the present invention.

6 is a circuit diagram for voltage drop of 5V according to the present invention.

7 is a circuit diagram for increasing the voltage of 10V according to the present invention

8 is a circuit diagram for increasing the voltage of 5V according to the present invention

9 is a block diagram showing a power saving method of the present invention

■ Explanation of symbols used in main parts of drawing ■

A: Control PCB 20a: Power Factor Analysis Microcomputer

20b: I / O current comparison micro 20c: I / O voltage comparison micro

40: voltage detection PT 50: micro current detection CT

60: A / D converter 70: capacitor

20 microprocessor 10 signal output unit

1,2,3,4,5,6: contacts

T1, T2, T3, T4, T1 ', T2', T3 ', T4': Solid State Relay

1 is a power saving device using a conventional single winding transformer, FIG. 2 is a single winding transformer power saving device of a tap-changing method using a conventional mechanical contact, and FIG. 3 is a circuit diagram showing a power control device according to the present invention. Is a connection circuit diagram of each contact portion and a contactless semiconductor element of the present invention, Figure 5 is a circuit diagram for voltage drop 10V according to the present invention, Figure 6 is a circuit diagram for voltage drop 5V according to the present invention, Figure 7 FIG. 8 is a circuit diagram for increasing voltage by 10V according to the present invention, and FIG. 8 is a circuit diagram for increasing voltage by 5V according to the present invention, and FIG. 9 is a schematic diagram showing a power saving method of the present invention. The power control power saver will be described in detail.

First, referring to FIG. 3, a control method of a surplus power control power saving device using a contactless semiconductor device will be described.

The input and output values are detected through the voltage detection PT 40 and the microcurrent detection CT 50 which detect the voltage and current having high accuracy on the input side and the output side.

The digital signal is converted through the A / D converter 60 into an appropriate amount of analog signal amplified by a conventional amplifier for amplifying the detected value. The values of the digital signals of the A / D converter 60 are compared and analyzed through the microcomputers 20a, 20b, and 20c for calculating respective values.

출력 Signal output signal for opening and closing solid state semiconductor devices (T1, T2, T3, T4, T1 ', T2', T3 ', T4') at zero point of sine wave of voltage and current according to analysis value Withdrawal from the part to control the contacts (1, 2, 3, 4, 5, 6).

Referring to the embodiment of the operating state with the above configuration,

1) Referring to Fig. 5, when the supply voltage of the input side is 217V or more,

The signal output unit 10 of the microprocessor unit 20 closes the contactless semiconductor elements T1, T2, and T3, and opens all others. The electric circuit of the single winding transformer is composed of the main winding 100 and the primary excitation winding. The 200 is configured in series to cause the output voltage to drop by 10V.

2) With reference to Fig. 6, when the input voltage is 216 ~ 212V

The signal output section 10 of the microprocessor section 20 closes the contactless semiconductor elements T1, T2, and T4, and opens all others. The electric circuit of the single winding transformer is composed of the main winding 100 and the primary excitation winding. The 200 and the secondary excitation winding 300 are configured in series to drop the output voltage 5V.

3) Referring to Fig. 7, when the supply voltage on the input side is 201V or less,

: Closes the contactless semiconductor elements T1 ', T2', and T3 'with the signal output unit 10 of the microprocessor unit 20, and opens all others. The electric circuit of the single winding transformer is composed of the main winding 100 and one. Although the secondary excitation winding 200 is configured in series, the excitation current flows in a direction opposite to the flow direction of the excitation current of 1), thereby boosting the output voltage to a 10V voltage.

4) Referring to Fig. 8, when the supply voltage of the input side is 211 ~ 202V,

: The microprocessor part 20 closes the contactless semiconductor elements T1 ', T2', and T4 'and opens all others, so that the electric circuit configuration of the single winding transformer is composed of the main winding 100 and the primary excitation winding 200. Although the secondary excitation winding 300 is configured in series, the excitation current flows in a direction opposite to the flow direction of the excitation current of 2), thereby boosting the output voltage to a 10V voltage.

The variation of the output voltage according to the input voltage through the present invention is as shown in Table 3 below.

TABLE 3

Supply voltage Operating status Output voltage 217V or more T1, T2, T3 -10V 207 V or more 216 ~ 212V T1, T2, T4 -5V 211-207 V 211-202 V T1 ', T2', T4 ' + 5V 216 ~ 207V 201V or less T1 ', T2', T3 ' + 10V 211V or less

As described above, the detection values of the microcomputers 20a, 20b, and 20c of the microprocessor unit 20 vary according to various input voltage variations, and accordingly, the respective windings 100, 200, and 300 are changed through the signal output unit 10. The contact (1, 2, 3, 4, 5, 6) between the contactless semiconductor device (T1, T2, T3, T4, T1 ', T2', T3 ', T4') to be stable and save power The present invention is made. In addition, by using a contactless semiconductor device, it is possible to prevent abnormal phenomenon caused by opening and closing of a contact occurring in a conventional mechanical type.

The present invention consists of an input / output side voltage and a detection unit for detecting a current, a signal output unit for outputting a control signal by a microcomputer and a microcomputer to detect and compare current and voltage and the value calculated by the microcomputer, and a signal output. By using the contactless semiconductor device controlled by the negative, the contact of the excitation winding is opened and closed at the zero point of the periodic sinusoidal waveform of voltage and current, so that the contact is not damaged. By keeping the voltage stable in response to the voltage, it has a great effect on the life and power saving of the electric equipment. Therefore, if this pattern is introduced and installed in various electric equipments, it will be very helpful to save power and save foreign currency due to oil imports, and it will be able to dominate the domestic market share of the product and produce power saver in the world market. It is devised.

Claims (2)

In the single winding coil type transformer using a ring core (CORE), A main winding 100 through which load current passes through the circular winding core K, two excitation windings 200 and 300 through which an excitation current passes in series, On the power input side, a plurality of contactless semiconductor devices (T1, T2, T3, T4, T1 ', T2', T3 ', T4') for combination and connection between the main winding 100 and the excitation winding (200, 300) and , A control PCB (A) for controlling the contactless semiconductor element, A voltage detection PT 20c for detecting voltage and current on the input side and an output side, and a CT 20b for detecting the small current; Surplus power control power saving device using a contactless semiconductor device comprising a capacitor 70 is installed in parallel to the output stage to remove the harmonics of the output power, compensating the power factor The method of claim 1, The control PCB (A) is an A / D converter 60 that digitalizes the detected analog signal, and the microcomputers 20a, 20b, and 20c which detect input / output voltage, current, and power factor, and compare and analyze the detected values. Surplus power control power saving device using a contactless semiconductor device comprising a microprocessor 20, a signal output section 10 for sending a control signal to a contactless semiconductor device