JP3478721B2 - Gate circuit of self-extinguishing element - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate circuit for self-extinguishing elements connected in multiple series.

[0002]

2. Description of the Related Art FIG. 9 is a circuit diagram showing a configuration example of a gate circuit of a conventional self-arc-extinguishing element.
It shows a gate circuit in a serial connection configuration. In FIG. 9, the self-arc-extinguishing element 1 responds to the ON signal output and the OFF signal output output from the gaming circuit 4.
The gate drive circuit 2 turns on / off. At this time,
The output of the gate circuit is sent to the gate drive circuit 2 via the light guides 3a and 3b.

The gate circuit 4 is a gate drive circuit 2 of a self-extinguishing type element in response to an ON signal input from the control device.
Outputs an ON / OFF signal to the
It is necessary to secure the minimum on-time and dead time,
The gate circuit secures these times.

Therefore, the gate circuit 4 includes a minimum on-time circuit 5 for ensuring a minimum pulse width of an on signal, an inverting circuit 6 for inverting the on signal to produce an off signal, and an off gate pulse generating circuit for producing an off gate pulse. 7, an off-delay circuit 8 for producing dead time, an aggregating circuit 9 for aggregating interlock elements of an on signal, and an interlock circuit 10 for an on signal.

The minimum on-time is the time secured for discharging the electric charge stored in the snubber capacitor of the self-extinguishing element, and the minimum on-time circuit 4 detects the on-signal and the rising of the on-signal. It is composed of an OR circuit 5-2 which receives the output of the one-shot circuit 5-1 for generating the pulse width of the minimum on-time, and even if an ON signal shorter than the minimum on-time is input, the one-shot circuit 5-. By 1, the ON signal can secure the minimum ON time.

The off signal is generated by an inverting circuit 6 which inverts the on signal, and an off gate pulse is generated by an off gate pulse generating circuit 7 which is a one-shot circuit for generating a predetermined pulse width from the rising edge of the off signal. To be done.

The dead time is a self-turn-off element in which an anode is connected to the positive side terminal of the DC voltage source, and a self-turn-off element in which a cathode is connected to the negative side terminal of the DC voltage source.
In the circuit in which the cathode of the positive side self-extinguishing element and the anode of the negative side self-extinguishing element are connected and used as an alternating current terminal, the positive side and the negative side are switched when the on / off state is switched. Both of the self-arc-extinguishing elements in the above are periods in which the ON signal is not applied. By providing this time, after one self-arc-extinguishing element is surely turned off, an ON signal is given to the other self-arc-extinguishing element called the opposite arm. It is possible to prevent a short circuit of the DC voltage source due to simultaneous turning on of the arc extinguishing element.

In order to secure the dead time, when the ON signal changes from "1" to "0", the dead time is created by the OFF delay circuit 8 which delays the falling time of the ON signal. This is performed by inputting the output of the circuit 8 to the aggregation circuit 9 for interlocking the ON signal of the opposite arm.

Further, the aggregating circuit 9 for aggregating the interlock elements of the ON signal is a NOR circuit which receives the output 11 'of the off-delay circuit for producing the dead time of the opposite arm and the output of the off-gate pulse generating circuit 6 as inputs. And outputs "1" only when both inputs of the NOR circuit are "0".

An ON signal interlock circuit 10 is an AND terminal to which the output of the aggregating circuit 9 and the ON signal are input.
It is composed of a circuit. This interlock circuit 10
Thus, it is possible to secure a predetermined off-gate pulse, secure a dead time, and protect the positive-side / negative-side self-extinguishing element from simultaneous on-gate input.

[0011]

However, in the conventional gate circuit, if one IC constituting the gate circuit is damaged, the minimum on-time, the predetermined off-gate pulse and the dead time cannot be secured. In this state, the self-extinguishing element may have a malfunction in on / off operation.

Particularly in a gate circuit of self-extinguishing elements connected in multiple series, a failure of one IC in the gate circuit may cause a failure in the self-extinguishing elements connected in multiple series. As described above, in the conventional gate circuit of the self-arc-extinguishing element, the failure of one IC on the gate circuit causes a failure in the expensive self-arc-extinguishing element and the protective device such as the fuse, and the restoration. It will take time.

Therefore, it is an object of the present invention to provide a gate circuit which does not affect all self-extinguishing elements connected in multiple series by the failure of one IC of the gate circuit.

[0014]

In order to achieve the above object, in a gate circuit of a self-arc-extinguishing element according to claim 1 of the present invention, an ON signal is input to a plurality of minimum ON-time means, and the minimum ON-time means is input. The output of the on-time means is aggregated by the on-pulse aggregating means provided for each self-arc-extinguishing element and given as an on-pulse to each self-arc-extinguishing element, and the off signal is input to the plurality of off-gate pulse generating means, The output of the off-gate pulse generation means is aggregated by the off-pulse aggregation means provided for each self-arc-extinguishing element and given to each self-arc-extinguishing element as an off-pulse, and when turned on at the same time, the DC voltage source is short-circuited. The off-pulse for the self-extinguishing element of the opposite arm is detected by the off-pulse detecting means, and the off-pulse detecting means detects the off-pulse by the interlock means. That the outputs an ON signal, the minimum on-time means the off pulse blocking means being output ON pulse to shut off the output of the off-gate pulse generating means. Accordingly, even if any one of the minimum on-time means fails, the minimum on-time can be ensured if one of the plurality of minimum on-time means is operating, and any one of the on-pulse aggregations can be performed. Even if the means fails, no malfunction occurs in the self-extinguishing elements connected in multiple series, and even if any one of the off-gate pulse generating means fails, one of the plurality of off-gate pulse generating means 1 If the two off-gate pulse generating means are operating, the off-gate pulse can be secured, and even if any one of the off-pulse collecting means fails, the self-extinguishing elements connected in multiple series do not malfunction. Then, the ON signal is output after confirming that the OFF pulse is output to the opposite arm. It is possible to prevent a direct short circuit, and by off-pulse blocking means, even if the off-gate pulse generating means fails, it is possible to prevent the off-the signal is output before the minimum on-time is ensured.

In the gate circuit of the self-extinguishing element according to claim 2 of the present invention, the ON signal is input to the plurality of minimum on-time means, and the output of the minimum on-time means is set for each self-extinguishing element. The minimum on-time means among the plurality of minimum on-time means is integrated even if any of the minimum on-time means fails by being integrated by the provided integration means and given as an on-pulse to each self-extinguishing element. If it is operating, the minimum on-time can be secured, and even if one of the aggregation means fails, the self-extinguishing elements connected in multiple series will not malfunction.

In the gate circuit of the self-extinguishing element according to claim 3 of the present invention, the off signal is input to a plurality of off-gate pulse generating means, and the output of the off-gate pulse generating means is the self-extinguishing element. Each of the self-extinguishing elements is aggregated by the aggregation means provided for each of them, and is given as an off pulse to each self-extinguishing element, so that even if any of the off gate pulse generating means fails, one of the off gate pulse generating means is turned off. An off-gate pulse can be secured if the gate pulse generating means is operating, and even if one of the integrating means fails, the self-extinguishing elements connected in multiple series will not malfunction. .

According to a fourth aspect of the present invention, there is provided a gate circuit for a self-arc-extinguishing element according to the second aspect, in which the aggregating means connects the anode terminal to the output of the minimum on-time means. Since it is composed of a plurality of diodes whose cathode terminals are connected to each other,
It is cheaper and less likely to malfunction as compared with the C configuration.

According to a fifth aspect of the present invention, in the gate circuit of the self-arc-extinguishing element according to the third aspect, in the gate circuit of the self-extinguishing element according to the third aspect, the aggregating means has an anode terminal at an output of the off-gate pulse generating means. Since it is composed of a plurality of diodes that are connected to each other and their cathode terminals are connected to each other, the cost is lower and the possibility of failure is lower than the case of using an IC.

[0019]

[0020]

In the gate circuit of the self-arc-extinguishing element according to claim 6 of the present invention, the off-gate interruption means cuts off the output of the off-gate pulse generation means while the minimum on-time means is outputting the on-pulse, thereby turning off the off-gate. Even if the pulse generating means fails, it is possible to prevent the off signal from being output before the minimum on-time is secured.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) FIG. 1 is a circuit diagram showing a configuration example of a gate circuit of a self-arc-extinguishing element according to the first embodiment of the present invention. The same elements as those in FIG. , The description is omitted, and only different parts will be described here.

The gate circuit 4 shown in FIG. 1 includes a first minimum on-time circuit 5a for ensuring a minimum pulse width of an ON signal, a second minimum on-time circuit 5b, and the first minimum on-time circuit 5a. Output and the second minimum on-time circuit 5
The outputs 12b and 12b are integrated for each element and the ON signals are interlocked with each other, and the first ON signal inverting circuit 6a that inverts the ON signal to generate the OFF signal.
A second on signal inversion circuit 6b and a first off gate pulse generation circuit 7a for generating a predetermined off gate pulse.
A second off-gate pulse generation circuit 7b, and the first
Circuits 13a and 13b for collecting the output of the off-gate pulse generating circuit 7a and the output of the second off-gate pulse generating circuit 7b for each element and for not outputting the off signal during the on signal output, Allowing to output the ON signal to the self-extinguishing element after a predetermined time after outputting the OFF signal to the self-extinguishing element on the opposite arm, which will short-circuit the DC voltage source if turned on at the same time. Circuit 14
And a circuit 8 for producing a dead time from the output of the OR circuit 15 which is an aggregate of the output of the first minimum on-time circuit 5a and the output of the second minimum on-time circuit 5b, and an ON signal interlock requirement. The integrated circuit 9 and the interlock circuit 10 for ON signal are provided.

Simultaneously turning on will short-circuit the DC voltage source. After outputting an off signal to the self-extinguishing element of the opposite arm, outputting an on signal to the self-extinguishing element after a predetermined time. The OR circuit 1 that permits the output of the first off-gate pulse generating circuit 7a and the output of the second off-gate pulse generating circuit 7b is integrated in the OR circuit 1
4-1 and a delay circuit 14-2 which receives the OFF signal output to the self-turn-off element which is the output of the OR circuit 14-1
And an OR circuit 15 which is set by the output of the delay circuit 14-2 and aggregates the output of the first minimum on-time circuit 5a and the output of the second minimum on-time circuit 5b.
Set / reset by ON signal output which is the output of
The reset flip-flop circuit 14-3 and the reset flip-flop circuit 14-3 output the off signal to the self-extinguishing element and then output the signal after a predetermined time.

A signal obtained by inverting the output signal 16 'of the set / reset flip-flop circuit 14-3 of the opposite arm is newly input to the aggregation circuit 9 for the interlock element of the ON signal, so that After the OFF signal is output to the self-extinguishing element, the circuit allows the ON signal to the self-extinguishing element after a predetermined time.

Further, the first minimum on-time circuit 5a.
And the output of the second minimum on-time circuit 5b,
The circuits 12a and 12b for collecting the ON-state signal and interlocking the ON-signals with each other are provided for the output of the first minimum on-time circuit 5a and the second minimum on-time circuit 5b.
OR circuit 12-1 that aggregates the output of
Output signal 16 of reset flip-flop circuit 14-3
'And the output signal of the AND circuit 12-3 described later, and the OR circuit 12-2 that takes the logical sum, and the AN that takes the logical product of the output signal of the OR circuit 12-1 and the output signal of the OR circuit 12-2.
The D circuit 12-3 and the D circuit 12-3 are arranged to interlock the ON signal in the ON signal output stage.
That is, once the ON signal is output, the ON signal can be continuously output even if the output 16 ′ of the set / reset flip-flop circuit of the opposite arm becomes “0”, and the minimum ON time It is configured to ensure that.

Furthermore, the output of the first off-gate pulse generating circuit 7a and the second off-gate pulse generating circuit 7a.
The circuits 13a and 13b for consolidating the output of b for each element and for not outputting the OFF signal while outputting the ON signal.
Is an OR circuit 13-1 that aggregates the output of the first off-gate pulse generating circuit 7a and the output of the second off-gate pulse generating circuit 7b, an inverting circuit 13-2 that inverts an ON signal, AND circuit 13-for taking the logical product of the output signal of the OR circuit 13-1 and the output signal of the inverting circuit 13-2
3 and 3. The AND circuit 13-3 is provided at the output stage of the OFF signal to the drive circuit of the self-arc-extinguishing element so that the OFF signal is not output during the ON signal is being output.

With the above circuit configuration, even if the IC in the first minimum on-time circuit 5a fails, the second minimum on-time circuit 5b ensures the minimum on-time. In addition, ICs of different packages are provided for each output section of the gate circuit corresponding to the self-arc-extinguishing element in which the first and second integrated minimum on-time circuits 12a and 12b are connected in multiple series.
Thus, when 12a and 12b fail, the self-extinguishing elements connected in multiple series will not malfunction.

Further, the first off-gate pulse generation circuit 7
Even if the IC in a fails, a predetermined off-gate pulse is secured by the second off-gate pulse generation circuit 7b. In addition, each of the first and second aggregates 13a and 13b of the off-gate pulse generation circuits is provided in a separate package I for each output portion of the gate circuit corresponding to the self-arc-extinguishing element connected in multiple series.
By setting C, when 13a, 13b fails,
No malfunction occurs in the self-extinguishing elements connected in multiple series.

Furthermore, after the self-extinguishing element of the opposite arm outputs an off signal, by giving an on signal to the corresponding element, it is possible to prevent simultaneous turning on and off of the upper and lower arms leading to a DC short circuit. It is possible to prevent problems with protective devices such as.

(Second Embodiment) FIG. 2 shows a second embodiment of the present invention.
10 is a circuit showing a configuration example of a gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 9 are designated by the same reference numerals, and the description thereof will be omitted. Only different portions will be described here.

In the gate circuit of FIG. 2, the minimum on-time circuit that secures the minimum pulse width of the on-signal is composed of the first minimum on-time circuit 5a and the second minimum on-time circuit 5b, and is multiplexed. , OR circuits 12-1a and 12 that combine the output of the first minimum on-time circuit 5a and the output of the second minimum on-time circuit 5b for each element.
-1b is provided.

With the above circuit configuration, even if the IC in the first minimum on-time circuit 5a fails, the second minimum on-time circuit 5b ensures the minimum on-time. Further, the integrated circuits 12-1a and 12-1b of the first and second minimum on-time circuits are ICs of different packages for each output part of the gate circuits corresponding to the self-extinguishing type elements connected in multiple series. Therefore, 12-1a, 12-1
When b fails, the self-extinguishing elements connected in multiple series do not malfunction.

(Third Embodiment) FIG. 3 shows a third embodiment of the present invention.
10 is a circuit showing a configuration example of a gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 9 are designated by the same reference numerals, and the description thereof will be omitted. Only different portions will be described here.

In the gate circuit of FIG. 3, the minimum on-time circuit for ensuring the minimum pulse width of the on-signal is composed of the first minimum on-time circuit 5a and the second minimum on-time circuit 5b, and is multiplexed. A first ON signal inverting circuit 6a and a second ON signal inverting circuit 6b, which is an ON signal inverting circuit that further inverts the ON signal to generate an OFF signal, and multiplexes the ON signal inverting circuit 6a to generate an OFF gate pulse. One off-gate pulse generating circuit 7a, a second off-gate pulse generating circuit 7b, and a circuit 13- that aggregates the outputs 7a and 7b of the off-gate pulse generating circuit for each self-extinguishing element connected in multiple series. 1a and 13-1b are provided.

The first and second ON signal inversion circuits 6a,
6b is an O that aggregates the output of the first minimum on-time circuit 5a and the output of the second minimum on-time circuit 5b.
It is composed of an R circuit 6-1 and an inverting circuit 6-2 which inverts the output signal of the OR circuit 6-1. Further, an OR circuit 13-1 that aggregates the outputs of the off-gate pulse generation circuit described above.
a and 13-1b are composed of ICs in different packages.

With the above circuit configuration, even if the IC of the first off-gate pulse generating circuit 7a fails, the second off-gate pulse generating circuit 7b ensures a predetermined off-gate pulse. Further, the aggregation circuits 13-1a and 13-1b of the first and second off-gate pulse generation circuits
Are ICs of different packages for each output part of the gate circuit corresponding to the self-extinguishing type elements connected in multiple series, so that when the 13-1a and 13-1b are broken, The arc extinguishing element will not malfunction.

(Fourth Embodiment) FIG. 4 shows a fourth embodiment of the present invention.
2 is a circuit showing a configuration example of a gate circuit of a self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will be omitted. Only different portions will be described here.

In the gate circuit of FIG. 4, the output of the first minimum on-time circuit 5a and the output of the second minimum on-time circuit 5b.
Instead of integrating with the output of IC by IC, diode 1
7a, 17b.

(Fifth Embodiment) FIG. 5 shows a fifth embodiment of the present invention.
4 is a circuit showing a configuration example of a gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 3 are denoted by the same reference numerals, the description thereof will be omitted, and only different portions will be described here.

In the gate circuit of FIG. 5, the output of the first off-gate pulse generating circuit 7a and the output of the second off-gate pulse generating circuit 7b are not integrated by an IC, but by the IC.
This is performed by the diodes 18a and 18b.

(Sixth Embodiment) FIG. 6 shows a sixth embodiment of the present invention.
10 is a circuit showing a configuration example of the gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 9 are denoted by the same reference numerals, and the description thereof will be omitted. Only different portions will be described here.

In the gate circuit of FIG. 6, a set / reset flip-flop circuit 14-which is set by output of an off signal to the self-extinguishing element and reset by output of an on signal.
3 is added, and the output signal of the set / reset flip-flop circuit 14-3 is inverted and used as one input of the ON signal interlock circuit 10.

That is, the outputs of the set / reset flip-flop circuits 14-3 on the opposite arm, which would short-circuit the DC voltage source if turned on at the same time, are input to the interlock circuit 10 for ON signals.

As a result, it is possible to confirm that the off-gate signal has been output to the opposite arm and output the on-signal to the self-extinguishing element, so that it is possible to prevent a direct current short circuit due to simultaneous turning on of the upper and lower arms.

(Seventh Embodiment) FIG. 7 shows a seventh embodiment of the present invention.
7 is a circuit showing a configuration example of the gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention, the same elements as those in FIG. 6 are denoted by the same reference numerals, the description thereof will be omitted, and only different portions will be described here.

The gate circuit of FIG. 7 has a structure in which an on-delay circuit 14-2 is added to the input of the set / reset flip-flop circuit 14-3. With this on-delay circuit, it is possible to secure a dead time, which is a time during which an ON signal is not applied to both arms, which would cause a DC short circuit if they are simultaneously turned on.

(Eighth Embodiment) FIG. 8 shows an eighth embodiment of the present invention.
10 is a circuit showing a configuration example of the gate circuit of the self-arc-extinguishing element according to the embodiment of the present invention. The same elements as those in FIG. 9 are denoted by the same reference numerals, and the description thereof will be omitted. Only different portions will be described here.

In the gate circuit of FIG. 8, an AND circuit 13 which takes the logical product of the OFF signal to the self-extinguishing element and the output signal of the inverting circuit 13-2 which inverts the ON signal and the OFF signal.
-3 output signal. As a result, even if the IC on the off side fails during the minimum on-time, it is possible to prevent the off signal from being output before the minimum on-time is secured.

[0050]

As described in detail above, the first aspect of the present invention
In the gate circuit of the self-arc-extinguishing device according to the above, even if any of the minimum on-time means fails, the minimum on-time is ensured if one of the plurality of minimum on-time means operates. Even if any one of the on-pulse aggregating means fails, the self-extinguishing elements connected in multiple series will not malfunction, and even if any one of the off-gate pulse generating means fails, a plurality of off-gate pulse generating means will fail. If one of the off-gate pulse generating means is operating, the off-gate pulse can be secured, and even if any of the off-pulse collecting means fails, self-extinguishing connected in multiple series The malfunction of the shaped element will not occur, and the ON signal will be output after confirming that the OFF pulse has been output to the opposite arm. It is possible to prevent a DC short circuit due to the upper and lower arms being turned on at the same time, and even if the off-gate pulse generating means fails, the off-pulse is prevented from being output before the minimum on-time is secured. be able to.

In the gate circuit of the self-arc-extinguishing element according to the second aspect of the present invention, the ON signal is input to the plurality of minimum on-time means, and the output of the minimum on-time means is set for each self-arc-extinguishing element. The minimum on-time means among the plurality of minimum on-time means is integrated even if any of the minimum on-time means fails by being integrated by the provided integration means and given as an on-pulse to each self-extinguishing element. If it is operating, the minimum on-time can be secured, and even if one of the aggregation means fails, the self-extinguishing elements connected in multiple series will not malfunction.

In the gate circuit of the self-arc-extinguishing element according to the third aspect of the present invention, the off signal is input to the plurality of off-gate pulse generating means, and the output of the off-gate pulse generating means is the self-extinguishing element. Each of the self-extinguishing elements is aggregated by the aggregation means provided for each of them, and is given as an off pulse to each self-extinguishing element, so that even if any of the off gate pulse generating means fails, one of the off gate pulse generating means is turned off. An off-gate pulse can be secured if the gate pulse generating means is operating, and even if one of the integrating means fails, the self-extinguishing elements connected in multiple series will not malfunction. .

In the gate circuit of the self-arc-extinguishing element according to claim 4 of the present invention, in the gate circuit of the self-arc-extinguishing element according to claim 2, the aggregating means connects the anode terminal to the output of the minimum on-time means. Since it is composed of a plurality of diodes whose cathode terminals are connected to each other,
It is cheaper and less likely to malfunction as compared with the C configuration.

According to a fifth aspect of the present invention, in the gate circuit of the self-arc-extinguishing element according to the third aspect of the invention, in the gate circuit of the self-arc-extinguishing element according to the third aspect, the aggregating means has an anode terminal at the output of the off-gate pulse generating means. Since it is composed of a plurality of diodes that are connected to each other and their cathode terminals are connected to each other, the cost is lower and the possibility of failure is lower than the case of using an IC.

[0055]

[0056]

In the gate circuit of the self-arc-extinguishing element according to the sixth aspect of the present invention, the off-gate interruption means cuts off the output of the off-gate pulse generation means while the minimum on-time means is outputting the on-pulse, thereby turning off the off-gate. Even if the pulse generating means fails, it is possible to prevent the off signal from being output before the minimum on-time is secured.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a gate circuit of a self-extinguishing element according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a gate circuit of a self-extinguishing element according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a gate circuit of a self-extinguishing element according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a gate circuit of a self-extinguishing element according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a gate circuit of a self-arc-extinguishing element according to a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram of a gate circuit of a self-extinguishing element according to a sixth embodiment of the present invention.

FIG. 7 is a configuration diagram of a gate circuit of a self-extinguishing element according to a seventh embodiment of the present invention.

FIG. 8 is a configuration diagram of a gate circuit of a self-arc-extinguishing element according to an eighth embodiment of the present invention.

FIG. 9 is a configuration diagram of a gate circuit of a conventional self-extinguishing element.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Self-extinguishing element 2 ... Gate drive circuit 3a ... Light guide 3b for ON signal transmission ... Light guide 4 for OFF signal transmission ... Gate circuits 5, 5a, 5b ... Minimum on-time circuit 5-1 ... One-shot circuit 5-2 ... OR circuits 6, 6a, 6b ... ON signal inverting circuits 7, 7a, 7b ... Off gate pulse generation circuit 8 ... -Dead time circuit 9 ... Interlock aggregation circuit 10 ... ON signal interlock circuit 11 ... Dead time circuit output signal 11 '... Opposite arm dead time circuit output signal 12-1 , 12-2, 13-1, 14-1 ... OR circuits 12-3, 13-3 ... AND circuit 13-2 ... Inversion circuit 14-2 ... On-delay circuit 14-3. ..Set / reset flip-flops Road 15 ... OR circuit 16 ... set / reset flip-flop circuit of the output signal 16 '... opposite arms of the set / reset flip-flop circuit of the output signals 17a, 17b, 18a, 18b ··· diode

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H02M 1/08

Claims (6)

(57) [Claims] 1. A minimum on-time means for ensuring a predetermined pulse width without lowering the on signal regardless of the pulse width of the input signal for a predetermined time from the rising edge of the input on signal, and an output of the minimum on time means. In the gate circuit of the self-extinguishing element, the gate signal of the self-extinguishing element includes: an OFF signal generating unit that inverts an OFF signal to generate an OFF signal; Providing multiple on-time means,
A plurality of aggregating means for aggregating the outputs of the plurality of minimum on-time means for each element of the self-arc-extinguishing elements connected in multiple series and a plurality of the off-gate pulse generating means are provided. Aggregating means that aggregates the output for each element of self-extinguishing elements connected in multiple series, off-pulse detecting means that outputs a detection signal when the off-pulse of the self-extinguishing element of the opposite arm is output, and this off-pulse An interlock means for permitting the output of the ON signal by the detection signal of the detection means, and an off-pulse interruption means for interrupting the output of the off-gate pulse generation means while the minimum on-time means is outputting the on-pulse. Gate circuit of self-extinguishing element. 2. A minimum on-time means for ensuring a predetermined pulse width without falling the on signal for a predetermined time from the rise of the input on signal regardless of the pulse width of the input signal, and an output of the minimum on time means. In the gate circuit of the self-extinguishing element, the gate signal of the self-extinguishing element includes: an OFF signal generating unit that inverts an OFF signal to generate an OFF signal; Providing multiple on-time means,
A gate circuit for a self-arc-extinguishing element, comprising: an aggregate unit that aggregates the outputs of the plurality of minimum on-time elements for each element of the self-arc-extinguishing element connected in multiple series. 3. A minimum on-time means for ensuring a predetermined pulse width without falling the on signal for a predetermined time from the rising of the input on signal regardless of the pulse width of the input signal, and an output of the minimum on time means. In a gate circuit of a self-arc-extinguishing element, the gate signal of the self-arc-extinguishing element comprises: an OFF signal generating means for inverting the signal to generate an OFF signal; Self-extinguishing means comprising a plurality of gate pulse generating means, and an aggregating means for aggregating the outputs of the plurality of off-gate pulse generating means for each element of the self-extinguishing type elements connected in multiple series. Gate circuit of shaped element. 4. A gate circuit for a self-arc-extinguishing element according to claim 2, wherein said aggregating means comprises a plurality of diodes whose anode terminals are connected to the output of said minimum on-time means and whose cathode terminals are connected to each other. Gate circuit of self-extinguishing element. 5. The gate circuit of the self-arc-extinguishing element according to claim 3, wherein the aggregating means has a plurality of diodes whose anode terminals are connected to the output of the off-gate pulse generating means and whose cathode terminals are connected to each other. A gate circuit for a self-extinguishing element, which is characterized by comprising: 6. The position from the rising edge of the input ON signal
The constant time includes a minimum on-time means for ensuring a predetermined pulse width without falling the on-signal regardless of the pulse width of the input signal, and an off-signal generating means for inverting the output of the minimum on-time means to generate an off signal. A gate circuit of a self-extinguishing element having an off-gate pulse generating means for outputting an off-pulse having a pulse width of a predetermined time from the rise of the off-signal, the off-gate pulse is generated while the minimum on-time means is outputting the on-pulse. A gate circuit for a self-arc-extinguishing element, comprising: an off-pulse interruption means for interrupting the output of the generation means.