KR940009503B1 - Self-induction voltage controller for lamp - Google Patents

Abstract

The controller controls the voltage supplied to the illumination apparatus by adjusting the magnetic saturation of the transformer core. The load winding and the control winding are wound independently to each other such that the magnetic fields generated by the windings in the constant direction are superimposed or compensated each other. Then the saturation state of the magnetic field of the core and the induced voltage are controlled.

Description

Self-induction voltage adjustable lighting voltage regulator

1 is a schematic diagram of a front panel of a self-induction voltage regulating lighting voltage regulator.

2 is a schematic diagram illustrating a magnetic circuit generation principle of a transformer constituting a magnetic amplifier made of three core cores used in a self-induction voltage regulating lighting voltage regulator.

3 is an electric circuit diagram showing the overall operating state of the self-induction voltage regulating lighting voltage regulator.

* Explanation of symbols for main parts of the drawings

(1) CCON'T TR: Voltage Control Transformer (2) PR ₁ : Output Relay

(3) BD _1,2 : bridge diode rectifier (4) D _1,2 : diode rectifier

(5) VT _1,2 : Temporary sensor (6) MC ₁ : Magnetic contactor

(7) EOCR: Overcurrent Protection Relay (8) VM _1,2 : Voltmeter

(9) F _1-4 : Fuse for short circuit protection (10) R ₁ : Control circuit relay

(11) SYS'SW: device operation switch

The present invention is a self-induction voltage adjustment type lighting voltage regulator that automatically adjusts the voltage of a lighting device by controlling the magnitude of the flow resistance by adjusting the magnetic field saturation degree of the transformer iron core, the constant voltage of a constant level lower than the input voltage supplied It can be widely used in any device where it is required, especially for general lighting systems where load fluctuations occur frequently and input voltage fluctuates effectively and is supplied at unnecessarily high voltage, reducing the efficiency of the lighting device and reducing the lifetime. By keeping the high voltage as appropriate to the load characteristics and illuminance and maintaining it at a constant level, it can automatically control the regulated voltage irrespective of the input voltage and fluctuation to reduce the unnecessary power consumption and maintain efficient illuminance. Reduced heat generation and The present invention relates to a self-induction voltage regulation type lighting voltage regulator for increasing output safety and increasing lifespan.

Looking at the development process of the voltage regulator, the electromechanical device, the magnetic amplifier type device, and the electronic device are Japanese Patent Nos. 58-106617 and US Patents 4357670, 701247. Electronic switches using SCR or TRIAC have been developed to control the waveform of AC voltage. In order to achieve a power saving effect by reducing the voltage as much as the truncated waveform while maintaining the AC effective value voltage by a method of cutting by using a cutting method, the present invention has a side effect caused by harmonics and noise caused by sinusoidal waveform cutting. Inefficiency due to inefficiency due to the increase of reactive power caused by the reduction of power factor of the inductive load has failed to achieve the energy saving target effectively. In Korea Patent 32821, an electromechanical device was developed, but the present invention maintains the voltage of the AC sine wave while maintaining To maintain constant control at low levels It is designed to effectively achieve the power saving target while maintaining the AC sinusoidal waveform while maintaining the low voltage level through the variable contact of the dachs mono winding transformer.However, when applied to actual load, the sliding capacity must be very large to handle a large load current. Since the load current flows through the moving carbon brush variable contact piece, overheating and arc occur, and the side effect by foreign matter is greatly increased over time, and the device automatically controlled in response to voltage fluctuation is a mechanical electric motor. Since the variable contact piece is adjusted by moving, the fault of the automatic voltage regulator slows down.

The present invention can maintain the AC sine wave voltage waveform as it is, while maintaining the appropriately lowered constant voltage level, the control device for performing the voltage regulation function by controlling the output voltage by controlling the magnetic field saturation using the principle of the magnetic circuit mechanical drive It can perform voltage control function without any device and adjust the magnitude of magnetic induction voltage by changing the magnetic field saturation level of transformer core. It is an adjustable lighting voltage regulator that can control the output voltage to a certain level by adjusting the magnetic induction voltage and inductive resistance according to the magnetic field saturation degree of iron core in response to the change of output voltage and input voltage. The waveform of the output voltage is AC sine wave It was kept as it is.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a structural schematic diagram of the front panel of the self-induction voltage control type lighting voltage regulator, and two voltmeters are installed to compare and recognize the input voltage and the output voltage, and the input voltage control indicator and the output voltage control indicator And device operation indicators have been installed to indicate the current operating status of the device.

SYS'SW is a control switch of the control unit that can be selected by the user during power saving operation and bypass operation.

When the load current exceeds the rated value of the device, it automatically switches to the bypass operation state, which protects the device from overcurrent while the overload indicator lights up.

2 is a schematic diagram of a structure and a magnetic circuit of a transformer operating in the form of three core core magnetic amplifiers used in a self-induction voltage regulating lighting voltage regulating device. The direction of the generated magnetic force lines is a magnetic field of a certain direction is generated in the direction of the arrow to control the magnetic field saturation degree of the iron core. The pulsating DC currents half-rectified by the diodes D ₁ and D ₂ flow alternately in the two load windings outside the iron core. Offset was made.

The pulsating direct current alternately flown by the two diodes D ₁ and D ₂ is supplied to the load as an alternating current wave, which is collected again to the load at the intersection of D ₁ and D ₂ . In the center of the transformer, two independent control windings were installed to respond to the input voltage and the output voltage.

Since the rectification flowing through the control winding flows the rectified DC current by the bridge full-wave rectifier of BD ₁ and BD ₂ , a magnetic field is generated in each of the two control windings in the direction of the arrow. The directions of the magnetic fields generated in the control windings of (1) and (2) are magnetic fields which assist each other in the same direction.

The magnetic field of the control winding cancels the load winding magnetic field in a direction opposite to the direction of the magnetic field generated by the load winding.

(1) or (2) When the control winding voltage is increased and the control winding magnetic field becomes stronger, the function of the transformer core is improved by canceling much of the load winding magnetic field. Therefore, the magnetic induction voltage caused by the load current increases and the inductive resistance increases. It acts to lower the output voltage.

That is, when the input or output voltage is detected to be high, the load winding magnetic field is canceled to increase the magnetic induction voltage to control the output voltage to be lowered.

On the contrary, if the input or output voltage is detected to be low, the output voltage is controlled to be increased. In this way, the output winding of the load winding was controlled by adjusting the magnetic field saturation of the transformer core in response to the input and output voltages in the control winding.

The control range of output voltage level can be adjusted by adjusting the size of VR ₁ and VR ₂ resistors.

3 is an electric circuit diagram showing the overall operation principle of the self-induction voltage control type lighting voltage regulator, the offset diagram of the voltage control transformer is a magnetic circuit generation principle diagram of the transformer constituting a magnetic amplifier made of two core cores of FIG. Since it is shown in Figure 2, the structural diagram is omitted and only the magnetic circuit direction is shown.

When power is supplied through the NFB, the input power is bypassed to the output stage through the normally closed contact of PR ₁ even if the device is not operated separately.

At this time, the power supply is not advanced in the voltage control transformer which is an automatic control device. Turning SYS'SW to SV to operate the device, the R ₁ regulating circuit relay is excited. Closed side two contact of R ₁ relays so PR ₁ output relay woman is PR ₁ the contacts closes, the circuit configuration of the voltage-controlled transformer output voltage control circuit and the operation opens and PR ₁ the contact surface is interrupted by-pass the power supply circuit do.

Since the MC ₁ magnetic contactor is excited and the MC ₁ contact surface is closed, the DC current which is full-wave rectified is supplied to the two control windings of the voltage control transformer to generate a magnetic field in a certain direction. It adjusts the saturation degree of the magnetic field by the load winding current in response to the input and output voltage, and keeps the output voltage at a constant level required by the user.

When the load current increases above the rated value of the device, the EOCR overcurrent protection relay is activated to open the normally closed EOCR contact, causing the R ₁ control circuit relay to die, breaking the PR ₁ output relay and the MC ₁ magnetic contactor circuit.

The control unit is completely disconnected from the power supply, protected from overcurrent, and the bypass circuit is configured by the normally closed PR ₁ contact surface, and the load is supplied with input power that is not continuously regulated without power off.

The self-induction voltage control type lighting voltage regulator automatically adjusts the voltage of the control winding of the voltage control transformer to adjust the magnetic saturation of the iron core of the transformer to control the magnetic induction voltage induced from the load winding and induces it by the induction voltage. Advantages of reducing heat generation and increasing service life of electric appliances by constant voltage which is kept constant while reducing output unnecessarily high voltage while saving output by keeping output voltage low at a constant level as the sex resistance changes. It is possible to control the voltage without mechanical part and maintain AC sine wave as it is.

According to the needs of the user or when over current exceeding the rated value, the device automatically switches to bypass operation state, so that the device can be separated from the power supply and protected, while supplying the input power to the load without interrupting power. It is a voltage regulator to keep the output voltage constant by the voltage.

Claims (3)

Control the self-saturation of the iron core by arranging the load windings and control windings that can generate a magnetic field with a certain direction in the transformer core independently and helping or offset the magnetic fields of the control windings having a certain direction and the magnetic fields of the load windings. The self-induction voltage adjustment type lighting voltage regulator, characterized in that configured to adjust the magnitude of the inductive resistance by adjusting the magnitude of the induction resistance to adjust the AC sine wave voltage of the output terminal. The method according to claim 1, wherein a transformer using three core core magnetic amplifier principles is used to induce a magnetic field in a predetermined direction by a load winding and a control winding so that the magnitude of the magnetic induction voltage is controlled by the action of the magnetic field and the potato magnetic field. Self-induction voltage adjustable type lighting voltage regulator, characterized in that for controlling the output voltage by changing. The method according to claim 1, wherein the output voltage is controlled by regulating the magnetic field saturation conduction of the transformer core in response to the input voltage and the output voltage which fluctuate from time to time. Self-induction voltage adjustable lighting voltage regulator, characterized in that configured to supply power.