JP2876581B2 - Power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for supplying power to a load device in a duplex configuration, and more particularly, to a power supply device having a function of enabling detachment from a controller control device that performs monitoring and control in an energized state. The present invention relates to a redundant power supply device for supplying operating power to a controller control device.

[0002]

2. Description of the Related Art As a conventional power supply device of this type, for example, there is one shown in FIG. In this conventional device, as shown in FIG. 6, two power supply main units 1a and 1b are configured in a duplex configuration, and a predetermined operating power is supplied from these power supply main units 1a and 1b to a controller control device 9 that performs monitoring and control. It has become.

In this case, each of the power supply units 1a and 1b
An input unit 2 for inputting an external primary power source, a primary rectifier unit 3 for rectifying the input primary power source to remove noise, and a controller control device 9 that uses the primary power source as a load are required. It comprises a transformer 4 for transforming to an operating voltage, a secondary rectifier 5 for rectifying the transformed secondary voltage, a protection diode 6, and an output 7 for a secondary power supply. Further, the secondary power is supplied to the controller 9 via the power lines 10a and 10b as operating power. And each power supply unit 1
Each of a and 1b is provided with a primary-side power supply cutoff section 8 for detecting an overcurrent of the primary-side power supply and cutting off the primary-side power supply. It should be noted that, in the figure, the power supply device main body 1 of one of the redundant configurations is particularly used.
The basic configuration for a is shown.

Next, the operation will be described. In each of the power supply units 1a and 1b, the primary-side power input from the input unit 2 is subjected to noise removal by the primary-side rectification unit 3 and rectified, and then transformed into a voltage required for the controller 9 by the transformer 4. Is done. Then, the secondary-side power rectified and smoothed by the secondary-side rectification unit 5 is supplied from the output unit 7 to the controller 9 via the protection diode 6 according to the load.

At this time, since the operating power is output to the controller 9 via the respective protection diodes 6, the higher voltage output from both power supply main bodies 1a and 1b is higher. Since the operating voltage is on the load side and operating power can always be supplied even when one of the systems fails, a switching circuit is not required and the power supply device can be duplexed. If the output voltage is lower than that of the other system, a reverse voltage is generated at the output unit 7 of the secondary power supply, but the diode 6 protects the circuit inside the power supply unit. In addition, when an overcurrent occurs in the primary power supply, the primary power supply cutoff unit 8 can protect the power supply device main body from burning or destruction by shutting off the primary power supply.

[0006]

Since the conventional power supply is configured as described above, the power supply main bodies 1a and 1b are provided.
When the output of the power supply unit of one system is abnormal, such as a failure, the controller controller 9 can continue to operate with the power supply of the other power supply unit. There was a problem that it was not possible.

The present invention has been made in view of the above points, and has been made to solve the above-mentioned problems.
An object of the present invention is to provide a power supply device having improved reliability and operability by detecting an output state of a duplexed power supply device main body.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a power supply unit having a dual configuration and
Can be attached and detached from the controller controller, which is a load in the state
Control function from each power supply unit.
Power supply device that supplies operating power to the controller
Each of the power supply units has a rectifying means and an anode.
Connected to the flow means and the cathode is controlled by the controller
A diode-or-connected diode to the device;
Further, the anode of the diode is connected via a monitoring line.
The controller is connected to the controller
The control unit is connected to each of the power supply units via the monitoring line.
Output voltage state, and based on the detection result,
Alternatively, monitor or control each output voltage state from inside.
Control means.

[0009]

Therefore, in the present invention, when operating power is supplied from the duplicated power supply main body to the controller controller on the load side, a detection signal indicating the output state of the power supply main body is output separately from the power supply output section. Thereby, the output state can be monitored or controlled from outside or inside the power supply unit based on the information.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a basic block diagram showing a first embodiment of a power supply device according to the present invention, and here shows, in particular, a basic configuration of one of the redundant configurations. In this embodiment, the power supply units 1a and 1b have a dual configuration, and the secondary voltage of the secondary rectifier 5 of the power supply units 1a and 1b is supplied to the controller 9 via the protection diode 6. The configuration is similar to that of the conventional example shown in FIG.
And a secondary power supply voltage detector 11 for separately extracting the output voltage value of the secondary power supply output from the secondary rectifier 5, that is, the anode voltage of the diode 6. The output voltage values of these secondary power sources are sent to the controller control device 9 via the monitoring lines 12a and 12b, so that the controller control device 9 monitors the output state of the power supply main bodies 1a and 1b. It has become something. The same marks 6 and the same or corresponding ones in FIG. 1
No. is added.

Next, the operation will be described. In each of the power supply units 1a and 1b, the primary-side power supply input from the input unit 2 is subjected to a primary-side rectification unit 3 from which noise is removed and rectified. Transformed. Then, the secondary-side power rectified and smoothed by the secondary-side rectification unit 5 is supplied from the output unit 7 via the protection diode 6 according to the load.

At this time, since the operating power is output to the controller 9 via the protection diode 6, the higher voltage output from both power supply main bodies 1a and 1b is higher than the voltage on the load side. Operating voltage, and it becomes possible to supply operating power even when one system fails.
Therefore, a switching circuit is not required, and the power supply main body 1a,
1b can be duplicated, and the circuit in the power supply main body can be protected from a reverse voltage applied to the output section of the power supply main body that outputs the lower voltage value.

By outputting the output voltage on the anode side of the protection diode 6 to the external controller controller 9 as a voltage detection signal, the output state of each of the power supply units 1a and 1b can be controlled by the controller in a duplex configuration. It can be monitored by the device 9. As a result, when one of the power supply devices fails, the controller control device 9 can detect the failure, and can detect an abnormality in the power supply unit that is outputting an abnormality. Furthermore, when an overcurrent occurs in the primary power supply, the primary power supply cutoff unit 8 can protect the power supply device from burning and destruction by shutting off the primary power supply.

Embodiment 2 FIG. 2 is a block diagram corresponding to FIG. 1 showing a second embodiment of the present invention. The difference between this embodiment and that of FIG. 1 is that, as shown in FIG. 2, while the detection signal of the voltage detection unit 11 of the power output is monitored by the controller 9, the output voltage detection signal is transmitted to each power supply main unit. A voltage chuck terminal 13 for checking (measuring) is provided on the front surface of each of the power supply devices 1a and 1b, and a voltage adjusting circuit 14 is provided on the front surface of the power supply main body. As described above, according to the present embodiment, when the power supply devices are duplicated, each of the power supply device main bodies 1a and 1b
Can be easily adjusted in the normal state.

Embodiment 3 FIG. 3 is a block diagram of a main part showing a third embodiment of the present invention. Here, a case of a single system is shown. The difference of this embodiment from that of FIG. 1 is that, as shown in FIG.
The controller control device 9 monitors the output state of the power supply main body based on the voltage detection signal output from the power supply main body 1a, and the output for controlling the output in the power supply main body 1a based on the command of the controller control device 9. That is, a control unit 15 and an output opening / closing unit 16 are provided. Note that FIG.
Reference numeral 17a denotes a control line connecting between the output control unit 15 in the power supply device main body 1a and the controller control device 9.

As described above, according to the present embodiment, when the controller control unit 9 detects an abnormal output such as an overvoltage from the voltage detection signal from the secondary power supply voltage detection unit 11, the output control unit 15 is controlled by the command. Output switch 16
, The operation power supply can be cut off. Therefore, the power supply device main body and the controller control device can be protected from burning and destruction.

Embodiment 4 FIG. 4 is a block diagram of a main part showing a fourth embodiment of the present invention. Here, the case of a single power supply unit is shown. The difference between this embodiment and the embodiment shown in FIG. 3 is that the output state of the power supply unit is monitored by an external controller control unit 9.
Instead of controlling, as shown in FIG.
A is that a voltage monitoring unit 18 for monitoring the power output of the secondary rectification unit 5 is provided in a.

As described above, according to the present embodiment, by providing the voltage monitoring section 18 in the power supply device main body, each power supply device main body can detect the output state when the power supply devices are duplicated. For this reason, when an output voltage abnormality such as an overvoltage occurs, the power supply can be cut off through the primary side power cutoff unit 8 , the output control unit 15, and the output switching unit 16, and the power supply main body and the controller control unit are protected from burning or destruction. Can be protected.

Embodiment 5 FIG. 5 is a basic block diagram showing a fifth embodiment of the present invention. That is, in the first to fourth embodiments, the case where the supply secondary voltage is single has been described. However, as shown in FIG. 5, the power supply main unit 1 a having a plurality of secondary voltages also includes the respective secondary circuits. by the 19 ₁ ~19n provide a circuit shown in examples 1-4, the same effects as the embodiments described above. In FIG. 5, the same or equivalent components as those in FIGS. 1 to 4 are denoted by the same reference numerals, and suffixes 1 to n are added in correspondence with the numbers of the respective secondary voltages.

[0020]

As described above, according to the present invention, in a power supply device of a duplex configuration capable of being attached to and detached from a controller control device serving as a load in an energized state, a high output voltage from each of the duplicated power supply bodies is obtained. while supplying the controller controlling unit voltage side as an operation power supply by outputting the output voltage of the separately power supply main unit and its power supply output section to the outside as a detection signal, the controller output status of each power supply body It can be monitored and controlled by the control device. Further, by providing a voltage detection unit for detecting the output voltage in each power supply device main body, each power supply device main body can detect an abnormal output via a detection signal. Thereby, at the time of abnormal output, the power supply device main body and the load device can be protected from burning and destruction, and the reliability and operability of the power supply device can be improved.

According to another aspect of the present invention, in the above-described apparatus, a means for checking or adjusting the output voltage value of each power supply unit is provided, or a controller is controlled when an abnormal output such as an overvoltage is detected. By providing a means for shutting off the operation power supply to the device, the output voltage value of each power supply unit can be easily adjusted while the power is on, and the power supply unit and the load device are burned or destroyed during abnormal output. From the power supply device, which is advantageous for improving the reliability and operability of the power supply device.

[Brief description of the drawings]

FIG. 1 is a basic block diagram showing a first embodiment of a power supply device according to the present invention.

FIG. 2 is a block diagram corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 3 is a block diagram of a main part showing a third embodiment of the present invention.

FIG. 4 is a block diagram of a main part showing a fourth embodiment of the present invention.

FIG. 5 is a block diagram of a main part showing a fifth embodiment of the present invention.

FIG. 6 is a schematic block diagram illustrating an example of a conventional power supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1a, 1b Power supply main body 2 Primary-side power input part 3 Primary-side power supply rectification part 4 Transformer 5 Secondary-side power supply rectification part 6 Protection diode 7 Secondary-side power supply output part 8 Primary-side power supply cutoff part 9 Controller control device 11 Two Next power supply voltage detection unit 13 Voltage chuck terminal 14 Voltage adjustment circuit 15 Output control unit 16 Output switching unit 18 Voltage monitoring unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H02J 1/10 G05F 1/00 H02J 1/00 306 H02M 3/00

Claims (3)

(57) [Claims] 1. A power supply unit has a dual configuration and has a function of enabling detachment from a controller control device which becomes a load in an energized state, and supplies operation power from each power supply unit to the controller control device. In the power supply device, each power supply device main body includes a rectifier and an anode.
Connected to the flow means and the cathode is controlled by the controller
A diode or a diode connected to the device, and the anode of the diode is connected via a monitoring line.
Connected to the controller control device , wherein the controller control device
Detecting the output voltage state of the power source main body, a power supply device, characterized in that the means for monitoring or controlling each of the output voltage state from the inside or the outside on the basis of the detection result. 2. The power supply device according to claim 1, wherein each power supply unit has means for checking or adjusting an output voltage value of each power supply unit. 3. The power supply device according to claim 1, wherein each power supply device main body has means for shutting off operation power supplied to a controller when an abnormal output such as an overvoltage is detected.