KR20110029626A - Power supply apparatus for illumination control and driving a plurality of led lamps which is capable of performing various color temperature - Google Patents

Abstract

PURPOSE: A power supply unit for driving a plurality of LED lamps to implement various color temperatures is provided to drive a plurality of lamps without converter by changing an input AC power to a high voltage DC. CONSTITUTION: A power supply unit for driving a plurality of LED lamps includes a power regulator(2), a power controller(3), an output power filter unit, a current controller, a resonant output power processing unit, and a CPU. The power regulator received noise-filtered commercial AC input power and generate a constant power. The power controller includes parallel low power elements. The output power filter unit filters driving power outputted from the power controller. The current controller controls a current to apply a constant current to an LED lamp. The resonant output power processing unit includes an output protection unit comprised of diodes.

Description

Power Supply Apparatus for Illumination Control and Driving a plurality of LED Lamps which is capable of performing various color temperature}

The present invention relates to a power supply for collective illuminance control for driving a plurality of LED lamps, in particular, LED lamp power driving converter for each LED lamp is necessary for LED lamps connected on one or more load lines It is a multi-LED lamp converter that does not need to be used, and it is possible to control several LED lamps within a predetermined capacity, and to turn off / illuminance, and also has a low-temperature color temperature (hereinafter referred to as the first light source). The lamp composed of a lamp consisting of a lamp and a LED device for lighting having a high color temperature (hereinafter, referred to as a second light source) using a LED multi-converter illuminance control device controls the illuminance and light quantity of the LED lamp so that different color temperatures naturally occur. The present invention relates to a power supply unit that can be mixed to express various infinite color temperatures of an LED lamp.

Nowadays, low-power, environmentally friendly LED lamps are increasingly replacing the traditional fluorescent and general lighting markets in homes, sales outlets, and many other industries. However, when replacing the LED lamp considering the imitation of the store and when various LED lamps such as replacement LED lamps such as fluorescent lamps, incandescent lamps and halogen lamps are applied, the advantages of low power and high brightness than existing lamps are considered. Small LED lamps (fluorescent replacement LED lamps, incandescent lamp replacement LED lamps, halogen replacement LED lamps, street lamp replacement LED lamps, etc.) (For example, if the 32W-class electronic ballast is replaced with LED lamps, LED lamps have 30W load power in terms of power consumption, and 32W fluorescent lamp replacement LED lamps have 24W load power. It is composed of high brightness LED lamp and consumes a lot of power due to higher illumination than necessary.

In particular, when the LED lamps, which are configured inside and outside the building, are kept open for 24 hours using high-brightness LED lamps when some of the ground stores and office lamps are open, during the daytime when natural light is available, the illumination control including the ON / OFF function of the LED lamps is controlled. By doing so, it is necessary to save unnecessary power, and the thermal problem is not solved in the operation of the LED lamp.

Therefore, by adjusting the illumination, the thermal problem can be solved and the maintenance cost of the lighting LED can be reduced. In addition, by controlling the illuminance of the LED lamp for lighting, it is possible to achieve the lighting and energy saving of stores and offices.

In order to control the illumination of LED lamps, a method of controlling voltage is common. This method uses a control module configured to perform only a few levels of level conversion using a PWM signal in an LED driving circuit stage. This allows LED drive device manufacturers to use circuitry as a reference (application note) when configuring LED lamp converters. For this reason, the LED device uses DC power supply, and the driving voltage range is only about 2V ~ 3V, and the driving current range is about 230mA ~ 300mA, so the driving power specification is different for each LED manufacturer. Control is not possible when using LED lamps, and the control effect for each LED lamp is different when operating a multi-light control circuit using the driving circuit provided by the LED manufacturer. have.

1 and 2 is a configuration diagram of the conventional method for the illumination control of the LED lamp, Figure 3 and Figure 4 is a configuration diagram when the illumination control of the individual LED lamps of Figs. .

In order to control the illuminance of the LED lamps composed of the groups of FIGS. 3 and 4, a dimming control unit and a controller must be provided, and wiring is complicated because the LED signal converter must be connected to the dimming control integrated controller using a control signal line. Since the expensive system integrated controller must be installed together, the difficulty and complexity of the construction are high, and the installation cost is inevitably high. In addition, installation of LED lamps must be added when constructing circuits for illumination control by regional units. It is difficult to apply the illuminance control and there is a problem such as the change of configuration of power equipment.

Also, in modern times, lighting prefers special lighting that requires the production of various colors by adjusting the brightness of each LED through the circuit configuration, rather than the implementation of a high color rendering white LED. In other words, the color temperature is changed by using the lighting as if changing the surrounding environment by changing the color, that is, the color and brightness of the light can be freely changed to realize various colors in various environments similar to the change of sunlight in the room, so that the psychological environment and the comfort of life There is a lot of desire to feel.

Therefore, the present invention is a device equipped with a controller for illumination control and a converter function for driving a plurality of LED lamps to solve the above problems, by supplying a control power directly to the LED lamp to control the current while compensating the LED lamp driving voltage, a plurality of Even if the LED lamps are different in type, the driving constant voltage and constant current, which are a problem when driving the power source, are matched to realize a plurality of group LED lamp illuminance control. It aims to use.

For this purpose, the present invention is a device equipped with a controller for illumination control and a converter function for driving a plurality of LED lamps, and directly supply the output power to the power input terminal of the LED lamp without using a power driving converter required for the LED lamp. By varying the output power level and supplying variablely, various LED lamps with the same number of LED elements can be used without the power converter when LED lamps are installed. Do it.

It is operated as a multi-converter by supplying the control output power of this unit directly to the LED lamp by generating a high voltage DC output power using the input AC voltage without using the power driving converter in the LED lamp requiring DC constant power. By controlling the constant current by changing the output power level, the constant current is maintained in the LED lamp which is essential for driving the LED lamp even in the illumination control, so it is possible to control the collective illumination without the need for a converter in multiple LED lamps. It can be used for special purpose lighting as it can mix various colors.

5 is a view showing a plurality of LED lamps having different Calvin degrees (color temperature) according to the present invention.

Color temperature is defined as the unique color of each light, such as red light at sunrise sunset, blue light at dawn, green light under fluorescent light, orange light under incandescent light and blue light in shade, and the unit of color temperature is kelvin (k). )to be.

So the color temperature of the main light source is usually. Fluorescent lamp is 7000K, incandescent lamp is 3000K, candle is 1000K, and the color of light is different because the color temperature is different for each light source (sun, incandescent, candle, etc.).

Therefore, when illumination control is performed by using LED fluorescent lamps of two light sources (or color temperature) or three (R, G, B) light sources, the color temperature change of each LED fluorescent lamp is varied by combining the color temperature within the LED lamp. It is possible to direct. For example, using a light source of R / G / B, the white color can be obtained by combining the brightness of each color. The first light source lamp and the second light source lamp having different color temperatures are composed of a plurality of special purposes. For the purpose of lighting, LED lights with different color temperatures can be appropriately arranged to achieve the purpose.

In order to produce a variety of color temperature with the LED fluorescent lamp of the object, the LED is selected for the first light source and the second light source, respectively, and manufactured as LED lamps, and these two LED lamps are composed of one LED light and according to the present invention. By controlling the illuminance using a multi-light LED converter, the system of the present invention is implemented. Color temperature control of the LED lamp, which is an object of the present invention, uses a plurality of LED fluorescent lamps having different correlation temperature kelvins and controls illuminance using a multi-LED converter to control illuminance of the LED lamp using color rendering and color temperature of the LED lamp through color combinations. In order to realize the change of color temperature through LED lamp, the LED element constituting the load LED lamp is one of the various light sources (using the color temperature and color rendering of the cool white or warm white series group) for each lamp. Is composed of warm white LED lamps, and these LED lamps are attached to the back of the case with a certain distance, and then the dimming function of the LED lighting converter is used to produce different dimming levels in each device. Proper color mixing is achieved to change the color through the back cover.

That is, dimming a pair of LED lamps (made by color rendering or light source) having a first light source and a second light source within the capacity of the multi-converter using two multi-color converters (hundreds of watts or several kilowatts). Properly placed in a certain area (with a back case and a front cover) to express, and then operating while changing the dimming level of the multi-purpose convertor for each device, it controls the existing color temperature for each lamp and covers the state of the lamp. Or indirect lighting. Each LED lamp is provided with a translucent plastic cover and a power line for each light source.

Figure 6 relates to an embodiment of the present invention by using the LED lamp collective illumination regulator according to the present invention when replacing a plurality of existing fluorescent lamps with LED lamps, it is possible to control the illumination without changing the additional equipment and devices to the existing device It is shown. That is, when replacing the conventional fluorescent lamps with LED lamps, the fluorescent ballast must be replaced with LED-driven inverters, according to the present invention without having to install a drive-type inverter of LED lamps for each LED lamp according to the present invention In parallel, LED lamps can be connected in parallel to collectively control the quantity as much as the control capacity, and multiple groups can be controlled simultaneously.

8 is a block diagram of a collective illuminance regulator having a multi-LED lamp inverter function according to the present invention, wherein the apparatus according to the present invention includes an input power supply unit 1, an electrostatic power generating unit 2, a power control unit 3, and a resonance. Type output power processing section 4 and CPU control section 5. 9 is a detailed block diagram of FIG. 8.

10 shows an internal circuit diagram of a device according to the invention.

The input power supply 1 filters the noise of the AC input power and is then supplied to the constant power generator 2. The constant power generation unit 2 is composed of a rectifier 21, a constant voltage generator 23, a high voltage rectifier 22, and a fan motor controller 24.

The constant power generation unit 2 receives the power of the noise-filtered input power supply unit 1 and is supplied to the rectifying unit to supply the rectified voltage to the fan motor control unit for controlling heat generation of the elements of the constant voltage generation unit 23 and the power control unit 3. Supply to (24). The constant voltage generator 23 supplies a constant voltage necessary for the data processor of the CPU controller 5 and the fan motor controller and the power controller 3.

 The power supplied to the power control unit is decompressed to AC 220V power input through the input power supply unit 1 to the appropriate AC level (for example 9V) required for the device through the transformer (T2). The reduced AC voltage generates and supplies DC constant voltages VCE and VEE necessary for the power control unit through the constant voltage generation unit 23 composed of one end element BD3 of the rectifying unit and the voltage regulator IC2. Another reduced AC voltage is converted into an independent DC voltage level (DCC) through one end element (BD2) of the rectifying unit to supply the necessary voltage to the fan motor control unit for cooling the heat sink of the power control unit, and the constant voltage composed of voltage regulator IC1 The generation unit 23 supplies a voltage VCC necessary for CPU control, and generates and supplies a negative voltage (ground) signal necessary for fan motor control.

The high voltage rectifying unit 22 in the constant power generation unit rectifies the input 220V AC voltage through the high voltage rectifying device BD1, and then the electrolytic capacitors EC1, EC11, EC6, and EC61 and the diodes D1, D2, D3, D44, and D45. And D46) to form a smoothing circuit. A ceramic capacitor may be connected to each end of the high voltage rectifying device BD1 to remove the ripple voltage and cut off the high frequency at which a stable DC voltage can be transmitted to the LED lamp.

The CPU control unit 5 controls the low-power LED lamps collectively so that the initial high-voltage output voltage is not transmitted to the LED lamp as the load (load protection), and a sudden current is generated during dimming on / off driving for dimming control. In order to prevent the flow of water, soft start and soft off functions should be provided. In addition, the CPU control unit supplies control signals for driving the power control unit and the fan motor control unit through the data processing unit, and the administrator remotely controls the desired illuminance control through the CPU control unit for proper illuminance control through the remote controller and the computer and the terminal control. can do.

The fan motor control driving signal FCON and the power controller driving signal PWM_OUT are output from the data processing unit CON1 of the CPU controller 5, and the PWM control signal generated for dimming is as shown in FIG. 12. 12 shows a signal type (AC chopping) which is controlled by dividing into a sampling frequency (several KHz) band within half cycle (120Hz) of AC power as a PWM_OUT signal. When controlled by the control unit, the pulse width modulation (PWM) within the sampling frequency allows more precise dimming to occur. The CPU controller recognizes the driving current of the load through the current controller of the resonant output power processor 4, and then maintains the constant current of the load portion of the LED lamp through the current controller at a predetermined time interval while controlling the power. The controller 3 is notified to allow the optimum driving current to flow when controlling the LED lamps. In actual dimming control, the supply voltage of LED lamps connected in parallel sets the input voltage (number of LEDs x LED driving constant voltage) as the number of LEDs connected so that the optimum driving power is applied to each LED. The current can be controlled at the same rate so that the failure and lifespan of the LED device according to the illumination control is not affected. FIG. 13 is a circuit diagram of the CPU control unit 5, which includes a communication port and a remote control signal receiving unit for remote control management of multiple devices at the same time, or may include a known display unit / audible unit for displaying status information. Can be.

As illustrated in FIG. 10, the power control unit 3 includes a high speed switching dedicated driver circuit H1C1 and power control elements Q5, Q6, Q7, .. Qn. The high-speed switching dedicated driver circuit is composed of a circuit consisting of a power conversion IC (U2), driver driving transistors (Q3, Q4) and a bias element, and their operating power is supplied with a constant voltage provided from the constant power generation unit. In the device driver driving transistors Q3 and Q4, the VCE (+ 15VDC) voltage is supplied to the collector terminal of the switching device Q3, and the VEE (GND) power is supplied to the collector terminal of the switching device Q4. The collector terminal is connected to pin 5 of the power conversion IC, and the base terminal of the switching element Q3 and the switching element Q4 is connected in common, and is commonly connected to pins 6 and 7 of the power conversion IC. Drive signal to gate signal terminal of power control element (Q5, Q6, Q7, ---, Qn) as power control signal which is converted into power by receiving control signal through PWM output port of CPU controller on pin 2 of power conversion IC Emitter Common Point (FET_Gate) Output Signals in Furnace (Q3, Q4) Is input to the control on the voltage generated by the high voltage rectifying section, off. In the driver driving circuit described above, the output of the switching element Q3 at high voltage and the output of the switching element Q4 at low voltage are configured to control the flow of current, thereby causing damage to the power element due to a sudden difference in switching level. Can be solved. In addition, the power control unit 3 primarily controls the power by the low power devices Q5, Q6, Q7, ---, Qn according to the switching of the power device driver driving circuits Q3 and Q4. As the SD1, the reliability of switching can be increased by making the switching width more precise for the power difference that is changed during control. That is, low power devices are configured to increase the capacity by connecting a large number of devices in parallel according to the capacity of the load, and to the output signal of the driver driving circuit (FET-Gate) at the gate end of the device so that high power control can be operated. The bypass resistor was added to supply a GATE signal by matching the resistance and to adjust an error value in parallel connection of the FET between the gate terminal and the drain terminal in a low power device configured in parallel (dashed line in FIG. 10). By connecting a large number of FETs in parallel, they can be driven in large capacity, and have the advantage of configuring a large output unit at a low cost.

The resonant output power processor 4 filters the low frequency and high frequency signals generated at the control point by the output power filter L (reactor) with respect to the DC power output of the illuminance control, and the elements of R (CR1) and C (C2) Is connected in parallel to the output of the device to form a resonant configuration with the LED lamp portion of the control output power is the load. The output power filter LL is a low frequency filter for direct current, which intentionally disturbs the linearity of direct current voltage / current to remove inductive noise flowing into the output circuit together with the DC voltage / current and the switching control frequency. On the other hand, the general filter is mainly used as a reactant coil itself or a ferrite (iron powder) -based core and used as a high frequency filter for the purpose of removing high frequency noise, but in the present invention, this is not a value of L (reactance) of the low frequency filter. It is applied in the form of impedance matching of output circuit signal by using DC-R component, and it is configured for low frequency by winding on silicon steel sheet. In addition, the DC filter is mostly used on the input side, but in the present invention, it is used on the output side, which has the effect of a two-stage filter, which enables fine control at the low stage when controlling the illumination of the LED lamp. In this way, the self-heating generated when driving the LED lamp is improved by achieving a resonant output power together with the load stage including the current control unit of the actual rear stage, and the heat dissipation problem is solved.

As shown in FIG. 11, the current controller of the resonant output power processor 4 exchanges information with the CPU so as to optimize the change in driving power of the LED lamp and reflects the result to the power controller so that the constant current can be maintained during control. It has two types, A type and B type, depending on the type of transistor.

In addition, the resonant output power processing section 4 includes an output protection device section 40 composed of diodes for preventing reverse power between multiple LED lamps and between the LED lamps and the current control section.

 As such, in the present invention, when controlling the illumination of the LED lamp, a control signal is connected to the driving converter for each LED lamp, and the LED lamp illumination is controlled by a controller that can operate by operating a separate illumination control unit and units. Because the device generates DC level LED lamp driving power, it does not need inverter of lighting LED lamp and performs controller function that enables collective illumination control regardless of the number of LED lamps within the capacity of the device. The band can be made stably from 220V to at least 0V without problems in the implementation of LED lamp illumination control of multiple lights. This simplifies the overall device configuration and reduces the costs for installation and operation.

1 is a block diagram of a conventional LED lamp built-in converter

2 is a block diagram of a conventional converter external LED lamp

3 is a configuration diagram for illuminance control of a plurality of conventional lamps with a converter;

4 is a configuration diagram for illuminance control of a plurality of conventional external converter lamps

FIG. 5 is a view illustrating a plurality of LED lamps having different Calvin degrees (color temperatures) according to the present invention.

Figure 6 is a block diagram showing the configuration of the LED lamp collective controller with an illumination control function according to the present invention

Figure 7 LED connection diagram for each lamp of a plurality of LED lamps according to the present invention

Figure 8 is a block diagram of the overall configuration of the power supply according to the invention

9 is a detailed block diagram of a power supply according to the present invention.

10 is a detailed circuit diagram of the power supply device of FIG.

11 is a view showing the configuration of the current regulation unit and the output protection unit;

12 is a diagram illustrating a PWM implementation method of a CPU.

13 is a diagram illustrating an example of a CPU control unit;

Explanation of symbols on the main parts of the drawings

1: input power supply unit 2: constant power generation unit

3: power controller 4: resonant output power processor

5: CPU control unit 21: rectifier

22: constant voltage generation unit 23: fan motor control unit

24: high voltage rectifier 40: output protection device

Claims (3)

In the power supply for driving a plurality of LED lamps, A constant power generator configured to receive a noise-filtered commercial AC input power and generate a constant power; A power control unit configured of parallel low power devices to control high power using a signal for controlling the illumination level width of the CPU based on the driving power generated by the constant power generation unit; An output power filter unit for filtering and outputting driving power output from the power control unit, a current control unit for adjusting a current value so that a constant current is supplied to an LED lamp as a load by receiving power dimmed from the output power filter unit; Output protection consisting of a diode to adjust the looping current by the impedance resistance value of the LED lamp load and protect the damage caused by reverse voltage when the plural LED lamp driving constant power supplied to the current controller is not controlled A resonance type output power processor including an apparatus part;  A CPU control unit for supplying and monitoring a control signal necessary for the constant power generation unit, the power control unit, and the current control unit of the resonant output power processor; And A power supply for collective illuminance control for driving LED lamps of a plurality of color temperature implementations, comprising a plurality of LED lights including a light source lamp having a different color temperature. According to claim 1, wherein the constant power generating unit rectifying the input power, a constant voltage generating unit for generating a constant voltage from the rectifying unit, a fan motor control unit for controlling the fan motor in accordance with the drive signal from the CPU control unit and a plurality of LED lamps Power supply for driving a plurality of LED lamps, characterized in that it comprises a high-voltage rectifier for generating a high voltage suitable for. The power supply device for driving a plurality of LED lamps according to claim 1, wherein the power control unit comprises a high-speed switching dedicated driver circuit and a power control element.

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