JP2012058951A - Electricity conditioning device, and power supply control system and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electricity conditioning device, and a power supply control system and method therefor.SOLUTION: In a power supply control system including a detector 201, a power conditioning device 202 and a resistance type loading device 202, the detector 201 can receive a feedback signal transmitted from the resistance type loading device 202. The detector 201 outputs a control signal of either voltage or current signal. After the power conditioning device 202 receives the control signal, a drive voltage is output by a proportional method. The proportional method is used to output the full-power drive voltage at intervals of continuous output time and to stop outputting the full-power drive voltage at intervals of discontinuous output time. After the resistance type loading device 203 receives the drive voltage, the feedback signal is output to the detector 201. Formation of power harmonics can be reduced efficiently through the operation of using the proportional method to output the full-power drive voltage at intervals of continuous output time and to stop outputting the full-power drive voltage at intervals of discontinuous output time.

Description

  The present invention relates to a kind of electrical regulator and power supply control system and method, and more particularly to a kind and apparatus and method of harmonic power quality control with a low harmonic reduction function. Proportional method can output full power drive voltage at continuous output time intervals and stop full power drive voltage output at time intervals without continuous output.

  Most of the power quality control systems output the necessary power mainly by an asymmetrical method, and the commonly used methods are a distributed zero crossover control and a linear phase angle control (linear phase angle control). control). These two types of control methods relate to driving voltage output in full wave units or half wave units. Please refer to FIGS. Taking the distributed zero crossover control as an example, when the interrupt frequency state of the maximum drive voltage is 50% of the output power of the drive voltage (see FIG. 2), the interrupt frequency is half of the output AC electrical frequency. With continued reference to FIGS. Taking the linear phase angle control as an example, in the case of a non-full power operation output, the output drive voltage is a voltage of a positive / negative half-cycle tangent phase angle that changes in voltage output. All of the known methods have the phenomenon of excessive harmonic generation.

  However, the drive voltage output from the current power conditioner is an output of a tangent phase angle method with positive and negative half-cycles or a large number of harmonics in this type of electric circuit that continuously outputs interrupts following the drive voltage. Interference is formed and equipment is damaged. Therefore, it is a problem that requires urgent solution from the viewpoint of the service life of the electronic device or the utilization efficiency of the device.

  The present invention has been made in order to solve the above-described problems of the known technology, and it is a main object of the present invention to provide a power adjustment apparatus and a power supply control system and method for solving the problems related to harmonics.

  Based on the object of the present invention, a kind of power supply control system provided with a resistance type load device, a detection device, and a power adjustment device is provided. The resistive load device receives the drive voltage, performs a corresponding operation, and generates a feedback signal according to the characteristics detected by the resistive load device after the operation. The detectable property is temperature, humidity or pressure. The feedback signal is transmitted from the resistive load device to the detection device, and the feedback signal is converted into a control signal by the detection device. After the control signal is transmitted from the detection device to the power adjustment device, an average value of each control signal received at the first inter-interval is calculated. Based on the above average value, a driving voltage corresponding to the second time interval is output. The second time interval includes a continuous output time interval and a non-continuous output time interval, and the ratio of the continuous output time interval and the non-continuous output time interval is distributed according to the average value of the control signals. The full power drive voltage is continuously output at continuous output time intervals, and the output of the full power drive voltage is stopped at non-continuous output time intervals. Thereby, the harmonics generated in the entire power system are minimized.

  Among them, the power adjustment device includes a trigger unit, a microprocessor, a power supply unit, and an input signal unit. The trigger unit receives the trigger signal output from the microprocessor and outputs a voltage signal as a drive voltage based on the trigger signal. The power supply unit provides a power supply necessary for the power adjustment device. The input signal unit receives each control signal, converts it to a control signal having a high / low potential percentage, and transmits it to the microprocessor. The microprocessor calculates an average value of the control signal as a percentage of the high and low signals for a fixed time, and generates a trigger signal based on the average value. The trigger signal is distributed in proportion to the continuous output time interval and the non-continuous output time interval. A full power trigger signal is continuously output at a fixed continuous output time interval, and the output of the full power trigger signal is stopped at a time interval at which continuous output is not performed.

  Based on the object of the present invention, a further kind of control method is provided. First, a feedback signal is generated using the characteristics of the resistive load device and transmitted to the detection device. The detection device side receives at least one feedback signal, converts each feedback signal into a control signal, and outputs the control signal to the power adjustment device. After receiving each control signal at the first time interval, the power adjustment device calculates an average value of each control signal. The power adjustment device outputs a drive voltage based on the average value of each control signal at the second time interval. The second time interval includes a continuous output time interval and a non-continuous output time interval. Based on the average value of each control signal, the proportion of the continuous output time interval and the non-continuous output time interval is allocated, and the continuous output time interval is full. The power drive voltage is output, and the output of the full power drive voltage is stopped at a time interval when the power is not continuously output.

  Among them, the power adjustment device includes a trigger unit, a microprocessor, a power supply unit, and an input signal unit. The trigger unit receives the trigger signal output from the microprocessor and outputs a voltage signal as a drive voltage based on the trigger signal. The power supply unit provides a power supply necessary for the power adjustment device. The input signal unit receives each control signal, converts it to a control signal having a high / low potential percentage, and transmits it to the microprocessor. The microprocessor calculates an average value of the control signal as a percentage of the high and low signals for a fixed time, and generates a trigger signal based on the average value. The trigger signal is distributed in proportion to the continuous output time interval and the non-continuous output time interval. A full power trigger signal is continuously output at a fixed continuous output time interval, and the output of the full power trigger signal is stopped at a time interval at which continuous output is not performed.

  In accordance with the object of the present invention, there is provided a power adjustment device further comprising a power supply unit, an input signal unit, a microprocessor, and a trigger unit. The power supply unit provides a power supply necessary for the power adjustment device. The input signal unit receives at least one control signal and converts it into a control signal having a high / low potential percentage. The microprocessor is connected to the power supply unit and the input signal unit, receives the control signal of each high / low potential percentage, calculates the average value of the control signal of each high / low potential percentage in the first time interval, and the second time interval In addition, a trigger signal is generated based on the control signal of the percentage of each high and low potential. The trigger signal is based on the average value of the control signals of the high and low potential percentages, and the proportional ratio between the continuous output time interval and the non-continuous output time interval is allocated to the second time interval, and the full power trigger signal is allocated to the continuous output time interval. Is output, and the output of the full power trigger signal is stopped at time intervals where continuous output is not performed. The trigger unit is connected to the microprocessor, receives the trigger signal, outputs a voltage signal based on the trigger signal, and uses it as a drive voltage.

  As described above, the electrical regulator according to the present invention and its power supply control system and method have the following advantages.

  The electric regulator according to the present invention and its power supply control system and method output a full power drive voltage at a continuous output time interval in a proportional manner, and stop outputting the full power drive voltage at a time interval at which continuous output is not performed. Reduce the generation of waves.

The waveform of the drive voltage of the distributed zero crossover control of a well-known technique is shown, and when the drive voltage is 10%. The waveform of the drive voltage of the distributed zero crossover control of a well-known technique is shown, and the drive voltage is 50%. The waveform of the drive voltage of the distributed zero crossover control of a well-known technique is shown, and the drive voltage is 90%. The waveform of the drive voltage of linear phase angle control of a well-known technique is shown, and the drive voltage is 10%. The waveform of the drive voltage of linear phase angle control of a well-known technique is shown, and the drive voltage is 50%. The waveform of the drive voltage of linear phase angle control of a well-known technique is shown, and the drive voltage is 90%. It is a block diagram of the power supply control system by this invention. 1 is a block diagram of a three-phase power adjustment device of a power supply control system according to the present invention. 1 is a block diagram of a single-phase power adjustment device of a power supply control system according to the present invention. FIG. 5 is a diagram illustrating a driving voltage of 10% according to the present invention and a second time interval of 100 periods. FIG. 5 is a diagram showing a driving voltage of 50% and a second time interval of 100 periods according to the present invention. FIG. 5 is a diagram illustrating a driving voltage of 90% according to the present invention and a second time interval of 100 periods. It is an implementation step flow figure of the power supply control method by this invention.

  Referring to FIG. 7, a block diagram of a power control system according to the present invention. In this figure, the power supply control system includes a detection device 201, a power adjustment device 202, and a resistive load device 203. The detection device 201 receives a feedback signal from the resistive load device 203 and outputs a control signal to the power adjustment device 202. The power adjustment device 202 outputs various powers to the resistive load device 203 based on the control signal. Subsequently, feedback data is transmitted from the resistive load device 203 to the detection device 201.

  Reference is made to FIG. 8A, a block diagram of a three-phase power regulator of a power control system according to the present invention. In this figure, the power adjustment device includes a power supply unit 301, an input signal unit 302, a zero phase detection device 303, an over temperature detection device 304, a microprocessor 305, and a trigger unit 306. The trigger unit 306 includes a plurality of sets of rectifiers, and includes two silicon-controlled rectifiers connected to each set of rectifiers in the reverse direction. The microprocessor 305 is connected to the power supply unit 301, the input signal unit 302, the zero phase detection device 303, the over-temperature detection device 304, and the trigger unit 306, respectively. The power supply unit 301 provides a power supply necessary for the power adjustment apparatus. The input signal unit 302 can receive a voltage or current control signal. The voltage signal is, for example, 0 V to 5 V, 1 V to 5 V, 0 V to 10 V, 2 V to 10 V, and the current signal is 0 mA to 20 mA or 4 mA to 20 mA. When the control signal is a current, the input signal unit 302 outputs the current signal by replacing the current signal with a voltage signal. After the control signal is replaced by the input signal unit 302, the control signal of the high / low potential percentage is output to the microprocessor 305, and the control signal in which the high / low potential percentage control signal is replaced from the current to the voltage signal, Includes a control signal for the voltage signal.

  The over-temperature detection device 304 detects whether the internal temperature of the power adjustment device exceeds the set value, and when it exceeds the set value, transmits an over-temperature control signal to the microprocessor 305. The fan is activated, and this fan is provided at one end of the power supply control system. The trigger unit 306 receives the trigger signal transmitted by the microprocessor 305, triggers a plurality of sets of rectifiers based on the trigger signal, conducts the multi-phase voltage signal, and drives the multi-phase voltage signal to the driving voltage. Is output as Of the plurality of sets of rectifiers, each set of rectifiers includes two silicon controlled rectifiers connected in parallel in opposite directions. The zero phase detection device 303 detects the zero point position of the multiphase voltage signal and outputs it to the microprocessor 305. When the microprocessor 305 receives a high and low potential percentage control signal, a trigger signal is transmitted based on the average value of all the high and low potential percentage control signals received in the time interval.

  Reference is made to FIG. 8B, a block diagram of a single-phase power regulator of a power supply control system according to the present invention. In this figure, the single-phase power adjustment device and the three-way power adjustment device are substantially the same. The difference between the two is that the trigger unit 306 has a set of rectifiers, the trigger unit 306 receives a trigger signal transmitted from the microprocessor 305, triggers the set of rectifiers based on the trigger unit, and has a single phase. In addition to conducting the voltage signal, a single-phase voltage signal is output as a drive voltage. This set of rectifiers includes two oppositely connected silicon controlled rectifiers. The zero phase detection device 303 detects the zero point position of the single phase voltage signal and outputs it to the microprocessor 305. When the microprocessor 305 receives a high and low potential percentage control signal, a trigger signal is transmitted based on the average value of all the high and low potential percentage control signals received in the time interval.

  Reference is made to FIGS. 9 through 11 and drive voltage output diagrams according to the present invention. Waveforms at various drive voltages are shown. In the figure, the full power drive voltage output is shown as a black waveform, and when the output of the full power drive voltage is stopped, it is shown as a hollow waveform. Using FIG. 9 as an example, when there are 100 periods in each time interval, when the output power is 10%, a full power drive voltage can be visually recognized in 10 periods, and the remaining 90 periods are full power. It can be visually confirmed that the output of the drive voltage is stopped. In the example of FIG. 10, when the output power is 50%, a full power drive voltage with a period of 50 appears first. In the remaining 50 cycles, the output of the full power drive voltage is stopped. In the example of FIG. 11, when the output power is 90%, a full power drive voltage with a period of 90 appears first. In the remaining 10 cycles, the output of the full power drive voltage is stopped. Accordingly, it is possible to observe a change in which the output of the full power drive voltage is stopped from only one full power drive voltage in each unit time. In the controller according to the present invention, a plurality of sets of unit times are provided for selection for setting a continuous output time interval and a non-continuous output time interval.

  Reference is made to FIG. 12, an implementation step flow diagram of the power supply control method according to the present invention. The power supply control method includes the following steps.

  Step S10: At least one feedback signal is received by the detection device, and each feedback signal is converted into a control signal.

  Step S20: After receiving each control signal at the first time interval by the power adjustment device, the average value of each control signal is calculated.

  Step S30, the power adjustment device outputs a driving voltage based on the average value in the second time interval, and distributes the proportionality between the continuous output time interval and the non-continuous output time interval according to the average value, so that the full power is output to the continuous output time interval. The driving voltage of the full power is stopped at a time interval when the driving voltage is not continuously output.

  In step S40, the drive signal is received by the resistive load device, the corresponding operation is performed, and a feedback signal is generated according to the characteristics of the resistive load device.

  Table 1, root mean square value of harmonics when full power drive voltage is output at continuous output time intervals by the proportional method, and full power drive voltage is stopped at time intervals when continuous output is not performed (Root Mean Square, RMS) And the proportionality of the fundamental wave. When operating at a drive voltage of 30%, the total harmonic distortion occupying the mean square is 2.91%, and the total harmonic distortion as a percentage of the fundamental wave is 2.92%. When operating at a drive voltage of 50%, the total harmonic distortion occupying the root mean square is 3.24%, and the total harmonic distortion as a percentage of the fundamental wave is 3.24%. Table 2 shows the proportion of harmonics in the root mean square and the fundamental wave in the distributed zero crossover control (distributed crossover). When operating at a drive voltage of 30%, the total harmonic distortion occupying the mean square is 18.81%, and the total harmonic distortion as a percentage of the fundamental wave is 18.36%. When operating at a drive voltage of 50%, the total harmonic distortion occupying the mean square is 18.74%, and the total harmonic distortion as a percentage of the fundamental wave is 18.37%. From the data in the above two tables, the harmonics when the full power drive voltage is output at the continuous output time interval by the proportional method and the output of the full power drive voltage is stopped at the time interval not continuously output are greatly increased. The fact that it has been reduced to 1 shows that the theory agrees with the experiment.

  Table 1 Harmonic formation when the power conditioner outputs full power drive voltage at continuous output time intervals in a proportional manner and stops output of full power drive voltage at non-continuous output time intervals

  Table 2 Harmonic formation when power conditioner is distributed zero crossover control

  What has been described above is a preferred embodiment of the present invention and does not limit the scope of the present invention. Unless departing from the spirit and scope of the present invention, replacement of elements having equivalent effects, or changes or modifications according to the claims of the present invention are also included in the patent scope of the present invention.

201 Detection Device 202 Power Conditioning Device 203 Resistive Load 301 Power Supply Unit 302 Input Signal Unit 303 Zero Phase Detection Unit 304 Over Temperature Detection Unit 305 Microprocessor 306 Trigger Unit S10 to S40 Steps

Claims (9)

A power supply control system including a detection device, a power adjustment device, and a resistive load,
The detection apparatus receives at least one feedback signal, and replaces each feedback signal with a control signal,
The power adjustment device is connected to the detection device, receives each control signal, receives an average value of each control signal in a first time interval, and applies a driving voltage based on the average value in a second time interval. The second time interval includes a continuous output time interval and a non-continuous output time interval, and the proportionality between the continuous output time interval and the non-continuous output time interval is allocated based on the average value of each control signal. , Output full power drive voltage at continuous output time intervals, stop full power drive voltage output at non-continuous output time intervals,
The resistance load device is connected to the detection device and the power adjustment device, outputs a drive voltage output from the power adjustment device, performs a corresponding operation, and according to the characteristics detected by the resistance load device Generate a feedback signal.   The voltage value of the control signal is, for example, between 0 to 5 volts, 0 to 10 volts, 1 to 5 volts, or 2 to 10 volts, and the current value of the control signal is 0 to 20 mA, or 4 to 20 mA. The power supply control system according to claim 1, wherein the power supply control system is between. A power adjustment device including a power supply unit, an input signal unit, a microprocessor, and a trigger unit,
The power supply unit is provided with a power supply necessary for the power adjustment device,
The input signal unit receives at least one control signal and is converted into a control signal having a high / low potential percentage,
The microprocessor is connected to the power supply unit and the input signal unit, calculates an average value of the control signal of each high-low potential percentage, receives the control signal of each high-low potential percentage, and receives the control signal of each high-low potential percentage. A trigger signal is generated based on the control signal, and the trigger signal distributes a proportional ratio between the continuous output time interval and the non-continuous output time interval based on the average value of the control signal of the percentage control signal of each high and low potential. , Output full power trigger signal at continuous output time interval, stop full power trigger signal output at non-continuous output time interval,
The power supply control system according to claim 1, wherein the trigger unit is connected to the microprocessor, receives the trigger signal, outputs a voltage signal based on the trigger signal, and generates a drive voltage.   The trigger unit further includes a set of rectifiers, the rectifiers corresponding to the number of the voltage signals, and the set of rectifiers includes two silicon-controlled rectifiers connected in parallel in opposite directions, and triggering the trigger signal The power supply control system according to claim 3, wherein the power supply control system outputs the drive voltage. The detection apparatus receives at least one feedback signal, and replaces each feedback signal with a control signal,
After receiving each control signal at the first time interval by the power adjustment device, calculate an average value of each control signal,
From the power adjustment device, the drive voltage based on an average value is output in a second time interval, the second time interval includes a continuous output time interval and a time interval in which continuous output is not performed, and based on the average value, After distributing the proportionality between the continuous output time interval and the non-continuous output time interval, the full power drive voltage is output during the continuous output time interval, and the full power drive voltage is stopped during the non-continuous output time interval.
A power supply control method comprising: a step of receiving the drive voltage by the resistive load device, performing a corresponding operation, and generating the feedback signal according to characteristics of the resistive load device. A power adjustment device including a power supply unit, an input signal unit, a microprocessor, and a trigger unit,
The power supply unit is provided with a power supply necessary for the power adjustment device,
The input signal unit receives at least one control signal and is converted into a control signal having a high / low potential percentage,
The microprocessor is connected to the power supply unit and the input signal unit, calculates an average value of the control signal of each high / low potential percentage, receives the control signal of each high / low potential percentage, and A trigger signal is generated based on the control signal, and the trigger signal distributes a proportional ratio between the continuous output time interval and the non-continuous output time interval based on the average value of the control signal of the percentage control signal of each high and low potential. , Output full power trigger signal at continuous output time interval, stop full power trigger signal output at non-continuous output time interval,
6. The power supply control system according to claim 5, wherein the trigger unit is connected to the microprocessor, receives the trigger signal, outputs a voltage signal based on the trigger signal, and generates a drive voltage.   The trigger unit further includes a set of rectifiers, the rectifiers corresponding to the number of the voltage signals, and the set of rectifiers includes two silicon-controlled rectifiers connected in parallel in opposite directions, and triggering the trigger signal The power supply control system according to claim 6, wherein the power supply control system outputs the drive voltage. A power adjustment device including a power supply unit, an input signal unit, a microprocessor, and a trigger unit,
The power supply unit is provided with a power supply necessary for the power adjustment device,
The input signal unit receives at least one of the control signals and is replaced with a control signal having a high / low potential percentage,
The microprocessor is connected to the power supply unit and the input signal unit, receives a control signal of each high / low potential percentage, calculates an average value of the control signal of each high / low potential percentage in a first time interval, and A trigger signal is generated based on a control signal of each high / low potential percentage at a second time interval, and the trigger signal is continuously output at a second time interval based on an average value of the control signals of each high / low potential percentage. And proportionally proportional to the time interval that does not output continuously, outputs a full power trigger signal during the continuous output time interval, stops output of the full power trigger signal during the time interval that does not output continuously,
The trigger unit is connected to the microprocessor, receives the trigger signal, outputs a voltage signal based on the trigger signal, and generates a driving voltage.   The trigger unit further includes a set of rectifiers, the rectifiers corresponding to the number of the voltage signals, and the set of rectifiers includes two silicon-controlled rectifiers connected in parallel in opposite directions, and triggering the trigger signal The power adjustment device according to claim 7, wherein the power adjustment device outputs the drive voltage.

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