JPH11355902A - Electric car controlling device, and method and device for diagnosing deterioration of electricity-to-light converting device contained therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to diagnose the deterioration of a gate command light receiving part and a feedback signal light emitting part inside a gate amplifier, in a non-contact controlling device which can easily be touched from a place where it is easy to operate it without touching the gate amplifier mounted at the remotest position. SOLUTION: A non-contact controlling device 3 is separated from the gate amplifier 2 contained in a main circuit or an auxiliary circuit 1. It is arranged at a place where it is easy to operate it in an electric car, for instance, the side part of the car body or a place facing an inspection passage in the case of a two-storied car, and the box of the non-contact controlling device is opened to diagnose the deterioration of the gate amplifier 2. The deterioration of the gate amplifier is diagnosed by determining, whether or not a feedback signal of sufficient quantity of light is outputted even if the power supply voltage of a feedback signal transmitter 22 is decreased to a reference value, and whether or not a gate command receiver 21 receives an 'H' level signal even if the quantity of light of a gate command is increased to the reference value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electric vehicle control device,
The present invention relates to a method for diagnosing deterioration of an electro-optical converter and a method for diagnosing deterioration of an electro-optical converter included therein.

[0002]

2. Description of the Related Art Conventionally, an electric vehicle control device in which a non-contact control device and a gate amplifier are separated and connected therebetween by an optical fiber to transmit a gate command has a circuit configuration as shown in FIG. . The electric vehicle control device shown in FIG. 8 includes a power conversion circuit (not shown) such as a converter or an inverter configured by a transformer (not shown) and a self-extinguishing type switching element in the main circuit or the auxiliary circuit 1. And a gate amplifier 2 for controlling on / off of a switching element of the power conversion circuit. The gate amplifier 2 receives a gate command signal and converts it into an electric gate command signal, and an H / L inverted signal (optical gate command signal) of the optical gate command signal received by the gate command receiver 21. Is "H", the optical gate command signal is "L".
And a feedback signal transmitting unit 22 that outputs a signal that becomes “H” at the time of (i) as an optical feedback signal.

The contactless control device 3 separated from the gate amplifier 2 includes a gate command transmitting section 31 for transmitting an optical gate command signal, and a feedback signal receiving section 32 for receiving an optical feedback signal from the gate amplifier 2. And The gate command receiving unit 2 of the gate amplifier 2
1 and a gate command transmission unit 31 of the contactless control device 3, a downstream optical fiber 4 for transmitting an optical gate command signal.
In addition, the feedback signal transmitting unit 22 of the gate amplifier 2 and the feedback signal receiving unit 32 of the contactless control device 3 are connected by an upstream optical fiber 42 for transmitting an optical feedback signal.

In such a conventional electric vehicle control device, a gate command is generated in the non-contact control device 3, and this is subjected to electro-optical conversion in a gate command transmission section 31 to be converted into an optical gate command signal to generate a downstream light. The signal is transmitted to the gate command receiving unit 21 in the gate amplifier 2 through the fiber 41, and the optical gate command signal received by the gate command receiving unit 21 is converted into an electric gate command signal. On / off control,
Perform power conversion.

The feedback signal transmitting section 22 of the gate amplifier 2 generates a feedback signal H and L inverted from the gate command signal received by the gate command receiving section 21 and converts the signal into an optical feedback signal by electro-optical conversion. The signal is sent to the upstream optical fiber 42 and received by the feedback signal receiving unit 32 of the contactless control device 3.

[0006]

However, in such a conventional electric car control device, the upstream and downstream optical fibers 4 are not provided.
There has been a problem that a great deal of labor and time are required for the deterioration diagnosis of the transmission units 1 and 42 and the optical signals and the deterioration diagnosis of the reception units 21 and 22. It is for the following reasons.

In the case of a main circuit having an AC feed and an AC load, the number of switching elements of the power conversion circuit is, for example, four for each phase on the converter side, eight for two phases, and three for the inverter side. Since there are 3 × 4 = 12 phases, and a total of 20 switching elements are on / off controlled by the gate amplifiers 2 respectively, the electro-optical conversion device is also 2
Zero is required. A light receiving device such as a photodiode is used for the gate command receiving unit 21 employed in the gate amplifier 2 of each electro-optical converter, and a light emitting device such as an LED is used for the feedback signal transmitting unit 22. However, since these elements and optical fibers are deteriorated, deterioration diagnosis must be performed one by one at the time of maintenance and inspection work. Therefore, in order to perform the deterioration diagnosis on all the electric vehicle control devices of one set, it is necessary to perform the number of main circuit mounting times × 20. In addition, since the electric vehicle has the same configuration of the electric vehicle control device as the auxiliary circuit for the auxiliary power supply, the same deterioration diagnosis work is required for the auxiliary circuit. A great deal of time and effort is required.

In addition, since the electric vehicle control device is conventionally installed at the bottom of the vehicle body, it is necessary for the maintenance and inspection worker to enter the underground pit and work in an unnatural posture in the garage during the deterioration diagnosis work. The labor burden is even greater.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and has as its object to provide an electric vehicle control apparatus having a structure that facilitates a work of diagnosing deterioration of an optical fiber or an optical signal transmitting / receiving section. .

Another object of the present invention is to provide a method and apparatus for diagnosing deterioration of an electro-optical converter, which can reduce the labor and time required for diagnosing deterioration of an optical fiber or an optical signal transmitting / receiving section.

[0011]

According to a first aspect of the present invention, there is provided a power conversion circuit, and a gate amplifier for controlling ON / OFF of a switching element of the power conversion circuit, wherein the gate amplifier receives an optical gate command signal. Or a main circuit having a gate command receiving unit that converts the signal into an electrical gate command signal, and a feedback signal transmitting unit that outputs an H, L inversion signal of the optical gate command signal received by the gate command receiving unit as an optical feedback signal. Auxiliary circuit, a non-contact control device having a gate command transmission unit for transmitting the optical gate command signal, and a feedback signal receiving unit for receiving the optical feedback signal, the main circuit or the auxiliary circuit and the non-contact control device Provided between the transmission of the optical gate command signal from the gate command transmission unit to the gate command reception unit,
An electric vehicle control device including an optical fiber that transmits an optical feedback signal from the feedback signal transmitting unit to the feedback signal receiving unit,
The non-contact control device is separated from the main circuit or the auxiliary circuit, and is installed in an electric vehicle at a place where maintenance work is easy.

In the electric vehicle control device according to the first aspect of the present invention, the contactless control device is separated from the gate amplifier portion included in the main circuit or the auxiliary circuit, and the noncontact control device is located in the electric vehicle where the work is easy. For example, the case of the non-contact control device is opened by installing it at the side of the vehicle body or in the case of a two-story vehicle facing the inspection passage.
And a gate command in a gate amplifier included in the main circuit or the auxiliary circuit without touching a main circuit or an auxiliary circuit portion installed in a recessed place. A receiver, a feedback signal transmitter, and an optical fiber deterioration diagnosis work can be performed.

According to a second aspect of the present invention, there is provided a method for diagnosing deterioration of an electro-optical converter, comprising: a power conversion circuit; and a gate amplifier for turning on / off a switching element of the power conversion circuit. A gate command receiving unit for receiving a signal and converting it into an electric gate command signal; and H and L of an optical gate command signal received by the gate command receiving unit.
A main circuit or an auxiliary circuit having a feedback signal transmitting unit that outputs an inverted signal as an optical feedback signal, a gate command transmitting unit that transmits the optical gate command signal, and a feedback signal receiving unit that receives the optical feedback signal Non-contact control device, provided between the main circuit or auxiliary circuit and the non-contact control device, transmitting the optical gate command signal from the gate command transmission unit to the gate command reception unit, and the feedback signal In an electric car control device including an optical fiber for transmitting an optical feedback signal from a transmission unit to the feedback signal reception unit, a power supply voltage to the feedback signal transmission unit is set to a predetermined value for deterioration determination. When the feedback signal receiving unit is And the feedback signal transmitting unit to see if receiving the "H" level of the optical feedback signal through the optical fiber, in which the deterioration diagnosis of the feedback signal transmitting unit and the optical fiber in the gate amplifier.

According to a second aspect of the present invention, there is provided a method for diagnosing deterioration of an electro-optical converter, wherein a feedback signal transmitting section in a gate amplifier included in the main circuit or the auxiliary circuit is connected to the optical circuit without touching the main circuit or the auxiliary circuit. Diagnosis of fiber deterioration can be performed.

According to a third aspect of the present invention, there is provided a method for diagnosing deterioration of an electro-optical converter, comprising: a power conversion circuit; and a gate amplifier for controlling on / off of a switching element of the power conversion circuit. A gate command receiving unit for receiving a signal and converting it into an electric gate command signal; and H and L of an optical gate command signal received by the gate command receiving unit.
A main circuit or an auxiliary circuit having a feedback signal transmitting unit that outputs an inverted signal as an optical feedback signal, a gate command transmitting unit that transmits the optical gate command signal, and a feedback signal receiving unit that receives the optical feedback signal Non-contact control device, provided between the main circuit or auxiliary circuit and the non-contact control device, a downstream optical fiber for transmitting an optical gate command signal from the gate command transmission unit to the gate command reception unit, And an upstream optical fiber provided between the main circuit or the auxiliary circuit and the non-contact control device, for transmitting an optical feedback signal from the feedback signal transmitting unit to the feedback signal receiving unit. In the car control device,
3. After confirming that the feedback signal transmitting section and the upstream optical fiber in the gate amplifier are normal, based on the deterioration diagnosis method of claim 2, the gate command receiving section outputs an "H" level through the downstream optical fiber. The signal is transmitted as a test signal in a state where its light amount is raised to a specified value set for deterioration determination, and a feedback signal receiving unit of the non-contact control device is transmitted from a feedback signal transmitting unit in the gate amplifier. A diagnosis of deterioration of the gate command receiving unit in the gate amplifier and the downstream optical fiber is performed by checking whether an "L" level optical feedback signal is received through the upstream optical fiber.

According to a third aspect of the present invention, there is provided a method for diagnosing deterioration of an electro-optical converter, wherein a gate command receiving section in a gate amplifier included in the main circuit or the auxiliary circuit and a downstream circuit are provided without touching the main circuit or the auxiliary circuit. The deterioration diagnosis of the side optical fiber can be performed.

According to a fourth aspect of the present invention, there is provided an electric vehicle control device, wherein the power supply for the gate command receiving section and the power supply for the feedback signal transmitting section in the gate amplifier included in the main circuit or the auxiliary circuit are different from each other. The output of the feedback signal transmitting unit in the power amplifier can be controlled independently without affecting the gate command receiving unit in the same gate amplifier. When the degradation diagnosis method is performed, it is possible to accurately diagnose the degradation of the feedback signal transmission unit and the optical fiber.

According to a fifth aspect of the present invention, there is provided a degradation diagnosis apparatus for an electro-optical converter, wherein a power supply for a feedback signal transmission section in a gate amplifier is connected to control a voltage level of the feedback signal transmission section; A test signal transmission control unit for instructing the transmission of a test signal to the gate command transmission unit; and a gate command transmission unit in the non-contact control device and a gate command reception unit in the gate amplifier connected to the gate command transmission unit. Connecting the end of the optical fiber that is on the side of the gate command transmitting unit,
A light amount control unit that changes the amount of light and sends it to the optical fiber, based on a feedback signal state received by a feedback signal receiving unit in the non-contact control device, the optical fiber, a gate command receiving unit in the gate amplifier, and An abnormality determining unit that determines a deterioration state of the feedback signal transmitting unit.

According to a fifth aspect of the present invention, a gate power supply control unit is connected to a power supply for a feedback signal transmission unit in a gate amplifier, and a test signal transmission is performed while controlling the voltage of the gate power supply control unit. The control unit instructs a gate command transmission unit in the non-contact control device to transmit a test signal, and the abnormality determination unit changes the H and L level states of the feedback signal received by the feedback signal reception unit in the non-contact control device. By checking, the deterioration diagnosis using the deterioration diagnosis method according to the second aspect of the present invention can be performed.

Further, an end of the optical fiber connected between the gate command transmitting section in the non-contact control device and the gate command receiving section in the gate amplifier is connected to the light quantity controlling section, and the light quantity is controlled. The degradation using the degradation diagnosis method according to the invention of claim 3 by checking the H and L level states of the feedback signal received by the feedback signal receiving unit in the non-contact control device while changing the magnitude and sending out to the optical fiber. Diagnosis can be performed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a deterioration diagnosis system for an electro-optical converter. The main circuit or auxiliary circuit 1 has the same circuit configuration as the conventional example shown in FIG. 8, a gate amplifier 2 included therein, and a main circuit or auxiliary circuit 1. A non-contact control device 3 separated from the gate amplifier 2 and a downstream optical fiber 41 and an upstream optical fiber 42 connecting between the separated gate amplifier 2 and the non-contact control device 3. A control device is configured, and a deterioration diagnosis device 5 which is a feature of the present invention is connected to the contactless control device 3. The power supply 2 of the gate command receiving unit 21 of the gate amplifier 2
3. The power supply 24 of the feedback signal transmission unit 22 is separated from the gate amplifier 2 in advance so that the wiring can be adjusted in height near the non-contact control device 3, and is controlled by the gate power supply control unit 51 of the deterioration diagnosis device 5. I have to do it.

The deterioration diagnosis device 5 includes a test signal transmission control unit 5 for transmitting a test signal to the gate power supply control unit 51 and the gate command transmission unit 31 of the contactless control device 3.
2. An abnormality determination unit 53 for diagnosing deterioration of the gate amplifier 2 and the optical fiber 4 based on the optical feedback signal received by the feedback signal receiving unit 32, and the downstream optical fiber 41 are connected to the gate command receiving unit 21 A light amount control unit 54 that variably controls the light amount of an optical signal to be transmitted is provided.

FIG. 2 shows the mechanical structure of the entire electric vehicle control device.
A housing 61 that accommodates the entire electric vehicle control device is attached to the bottom of the vehicle 60. In the housing 61, the main circuit or the auxiliary circuit 1 is installed at a recessed position where the main circuit or the auxiliary circuit 1 is not easily accessible from the side of the vehicle 60 during inspection work. The non-contact control device 3 is installed in a place easily accessible to a worker from the side of the vehicle 60. The main circuit or auxiliary circuit 1 and the non-contact control device 3 are connected by an optical fiber 4 (a downstream optical fiber 41 and an upstream optical fiber 42 each formed of one bidirectional optical fiber). I have.

Next, a method for diagnosing deterioration of the electro-optical converter using the deterioration diagnosis system having the above configuration will be described.

First, the characteristics of the light emitting device will be described. Light emitting devices such as LEDs used in the gate command transmitting unit 31 and the feedback signal transmitting unit 22 are:
As shown in the characteristic diagram of FIG. 9, the light output is substantially proportional to the power supply voltage. On the other hand, as the deterioration proceeds, the optical output for the same power supply voltage decreases. Therefore, it is necessary to increase the power supply voltage in order to transmit an optical signal of the same light amount. Conversely, when the power supply voltage is constant, it is necessary to increase the gain of the light receiving device that receives the optical signal. is there. However, if the deterioration further progresses, the light receiving device cannot output an optical output that can be reliably received, and transmission and reception of the optical signal become unstable. For example, for a minimum optical output of a normal product at a reference voltage, for example, , 50-3
If it drops to 0%, it is determined that the battery has deteriorated, and it must be replaced.

Similarly, the optical fiber is also deteriorated, and a disconnection can occur. Therefore, it is necessary to diagnose the condition.

On the other hand, a light receiving device such as a photodiode is also deteriorated. If deterioration occurs even for an optical signal of the same light amount, photoelectric conversion of a sufficient current value cannot be performed, and the light receiving device is used for receiving a gate command. Can not be done.

Therefore, the deterioration diagnosis device 5 is connected to the contactless control device 3, and the gate command receiving unit 21 and the feedback signal transmitting unit 2 of the gate amplifier 2 are divided into the following two cases.
2. Diagnosis of deterioration of the downstream optical fiber 41 and the upstream optical fiber 42 is performed. Prior to this deterioration diagnosis,
It is assumed that the deterioration diagnosis of the device on the side of the non-contact control device 3 is performed in the same manner as in the related art, and it is confirmed that it is normal. (The deterioration diagnosis of the non-contact control device 3 is performed in a place where it is easy to work, for example, when the device is disposed under the floor, the device is disposed on the vehicle side, and when the device is disposed in the vehicle, the device is disposed on the passage. It can be done easily.)

1. As shown in FIG. 3, when the equipment of the gate amplifier 2 is normal, the gate signal transmission unit 31 of the contactless control device 3 passes through the downstream optical fiber 41 through the downstream optical fiber 41. The gate command “H” sent to the gate command receiving unit 21 of the gate amplifier 2,
In response to the “L” signal, the feedback signal transmitting unit 22 of the gate amplifier 2 sends the “L” and “H” inverted to the gate command to the feedback signal receiving unit 32 of the contactless control device 3 through the upstream optical fiber 42. Returns the feedback signal.

Therefore, when an "H" signal is transmitted as a gate command from the gate command transmitting section 21, the feedback signal receiving section 22 receives an "H" signal as a feedback signal, or outputs an "L" signal as a gate command. If an “L” signal is received as a feedback signal at the time of transmission, it can be diagnosed that one of the feedback signal transmission unit 22 of the gate amplifier 2 and the upstream optical fiber 42 has deteriorated, broken, or has another abnormality. it can.
That is, the state of the transmission / reception signal on the side of the non-contact control device 3 is checked, and the feedback signal transmission unit 22 of the gate amplifier 2 installed in a place away from the device and the upstream optical fiber 42 connected thereto are connected. Deterioration diagnosis can be performed.

Therefore, using the deterioration diagnosis device 5, the gate power supply controller 51 is connected to a power supply connector (not shown) of the gate amplifier 2 provided in the contactless control device 3 in advance, and The deterioration diagnosis is performed as follows in a state where the voltages of the receiving unit power supply 23 and the transmitting unit power supply 24 can be changed simultaneously or individually.

As shown in FIG. 9, the light output (light emission amount) of a light emitting device such as an LED decreases due to deterioration even with a power supply having the same voltage. Therefore, if the light emission amount equal to or more than the reference value cannot be obtained while the power supply of the reference voltage is applied, it is determined that the light emitting device has deteriorated.

That is, in the case of the normal light emitting device shown by the curve A2 in FIG. 4, even if the voltage is much lower than the specified voltage, the feedback signal receiving unit 32 exceeds the threshold value for determining the "H" signal. Light can be emitted with a high light output (curve A4). However, if the light emitting device is deteriorated, the feedback signal receiving section 3 may be operated even if the voltage is higher than the specified voltage, as shown by the curve A3.
2 can emit light only with an optical output less than or equal to the threshold value for determining an “L” signal (A5 portion).

Therefore, as shown in the flowchart of FIG. 5, while the power supply voltage of the gate amplifier 2 is maintained at a normal value, the gate of the non-contact control device 3 is controlled by the control of the test signal transmission control unit 52. The output of the command transmitting unit 31 is held in the “L” state, and it is determined whether the feedback signal receiving unit 32 receives a signal in the “H” state as a feedback signal. Here, if a signal in the "L" state is received, it is determined that an abnormality has already occurred, and the deterioration diagnosis is terminated (steps S1 and S5).

However, normally, at the normal voltage value, the feedback signal receiving section 32 should receive an "H" state signal as a feedback signal (step S1).
In this state, the gate power supply voltage A1 is reduced to a specified voltage value under the control of the gate power supply voltage control section 51 (step S2).

Although the optical output of the feedback signal transmitting section 22 in the gate amplifier 2 decreases with respect to the power supply having the same voltage due to the deterioration, the feedback signal reception also occurs when the gate power supply voltage A1 is reduced to the specified value. If the unit 32 determines that the feedback signal sent from the feedback signal transmission unit 22 is in the “H” state, the abnormality determination unit 53 determines that there is no abnormality in either the feedback signal transmission unit 53 or the upstream optical fiber 42. Judgment (Step S
3, S4).

However, when the gate power supply voltage A1 is reduced to a specified value, the feedback signal receiving unit 3
2 determines that the feedback signal sent from the feedback signal transmitting unit 22 has changed to the “L” state,
The abnormality determining unit 53 determines that either the feedback signal transmitting unit 53 or the upstream optical fiber 42 has an abnormality (steps S3 and S5).

As described above, the operation of the non-contact control device 3 which is installed in a place easily accessible from the vehicle side only allows the operation of the main circuit or the auxiliary circuit 1 which is installed in the interior of the vehicle. The deterioration diagnosis of the feedback signal transmission unit 22 and the upstream optical fiber 42 in the gate amplifier 2 is performed.

2. Deterioration diagnosis of the gate command signal receiving unit 21 and the downstream optical fiber 41 If a light receiving device such as a photodiode deteriorates, the photoelectric conversion output decreases even for the same amount of received light, and an "H" level electric signal can be output. Disappears. As shown in FIG. 6, when the amount of received light is gradually increased from a sufficiently low value with respect to the gate command receiving unit 21 constituted by such a light receiving device, the received light amount B1 of the specified light amount is acceptable for a normal product B2. The gate command is detected as an "H" state from the stage of a sufficiently low light receiving amount, and an "H" gate command signal is output. As a result, the feedback signal obtained by inverting the H and L signals with the gate command receiving unit 21 is output. In response, the feedback signal transmitting section 22 switches from the "H" state to the "L" state and outputs a feedback signal at a stage sufficiently lower than the prescribed light amount (curve B4).

However, if the gate command receiving section 21 is a light receiving device and deteriorates, the "H" level electric signal cannot be output even if the light receiving amount increases to the specified light amount as shown by the curve B3. That is, the “L” state is maintained as the gate command, and the feedback signal transmitting unit 22 determines that the gate command is “L”, and sets the “H” signal inverted from H and L as a feedback signal as a feedback signal. 3 side feedback signal receiving section 3
Continue sending to 2. Only when the amount of received light greatly exceeds the specified amount of light, an "H" level signal is output, and an "L" level signal is returned to the contactless control device 3 as a feedback signal in response to the "H" level signal (part B5). ).

Therefore, as shown by a broken line in FIG. 1, the end of the downstream optical fiber 41 on the side of the gate command transmitting section 41 is connected to the light quantity control section 54 of the deterioration diagnosis device 5, and this light quantity control section 54, the light amount is sufficiently lower than the specified light amount, that is, the light amount is set such that the gate command receiving unit 21 can output only the “L” level signal or the light amount is zero even if the product is a normal product, and the feedback signal receiving unit 32 is set to “H”. "Check if a level signal is being received.
Note that this 2. Deterioration diagnosis of 1. Is performed after it is determined that the feedback signal transmission unit 22 in the gate amplifier 2 and the upstream optical fiber 42 are normal by the deterioration diagnosis of the gate amplifier 2.

From this state, the deterioration diagnosis shown in the flowchart of FIG. 7 is started, and the gate command B1 raised to the specified light amount by the light amount control unit 54 is transmitted to the gate command receiving unit 21 through the down-side optical fiber 41 (step S1).
1).

On the other hand, if both the downstream optical fiber 41 and the gate command receiving section 21 are normal, the gate command receiving section 21 converts the received gate command into an “H” level electric signal and outputs it. The gate amplifier 2
On the contrary, the feedback signal transmission unit 22 generates a feedback signal in the “L” state and transmits the feedback signal to the feedback signal reception unit 32 of the contactless control device 3. Looking at the change in the H and L states of the feedback signal of the feedback signal receiving unit 32, the abnormality determining unit 53 determines that the downstream optical fiber 41 and the gate command receiving unit 21 are normal (Steps S12 and S13).

However, if an abnormality occurs in the downstream optical fiber 41 or the deterioration of the gate command receiving section 21 is progressing, and the light quantity B1 is increased to the specified light quantity, the gate command receiving section 21 is still at the "H" level. If no signal is output,
The feedback signal transmitting unit 22 continues to transmit the “H” level signal to the feedback signal receiving unit 32 as a feedback signal. Therefore, although the light amount output from the light amount control unit 54 has increased to the specified light amount,
When the feedback signal receiving unit 32 receives the “H” level feedback signal, the abnormality determining unit 53
Determines that there is an abnormality in either the gate command receiving unit 21 or the downstream optical fiber 41 (steps S12 and S1).
4).

As described above, the operation of the main circuit or the auxiliary circuit 1 installed in a deep place of the vehicle is performed only by the operation of the non-contact control device 3 installed in a place easily accessible from the vehicle. The deterioration diagnosis of the gate command receiving section 21 in the gate amplifier 2 and the downstream optical fiber 41 can be performed.

It should be noted that 2. In the deterioration diagnosis, the light amount of the gate command to the gate command receiving unit 21 is adjusted by the light amount control unit 54. Instead, the power supply voltage of the gate command transmitting unit 31 in the non-contact control device 3 is changed. By doing so, the light quantity of the gate command can be adjusted.

[0047]

As described above, according to the electric vehicle control device of the first aspect of the present invention, the contactless control device is separated from the gate amplifier portion included in the main circuit or the auxiliary circuit, and the noncontact control device is connected to the electric vehicle. The main circuit or the auxiliary circuit part without touching the main circuit or the auxiliary circuit part A gate command receiving unit, a feedback signal transmitting unit, and an optical fiber deterioration diagnosis work in a gate amplifier included in a circuit or an auxiliary circuit can be performed.

According to the method of diagnosing deterioration of the electro-optical converter of the second aspect, the main circuit or the auxiliary circuit of the electric vehicle control apparatus of the first aspect can be touched without touching the main circuit or the auxiliary circuit. Alternatively, deterioration diagnosis of the feedback signal transmission unit and the optical fiber in the gate amplifier included in the auxiliary circuit can be performed, and the labor and time required for the deterioration diagnosis of the operator can be significantly reduced.

According to a third aspect of the present invention, there is provided a method for diagnosing deterioration of an electro-optical converter, wherein the main circuit or the auxiliary circuit portion of the electric vehicle control device according to the first aspect is not touched. Alternatively, it is possible to perform a deterioration diagnosis of the gate command receiving unit and the downstream optical fiber in the gate amplifier included in the auxiliary circuit, and the main circuit or the auxiliary circuit part can be combined with the deterioration diagnosis method of the invention of claim 2. The operator can perform a deterioration diagnosis of the entire gate command receiving unit, feedback signal transmitting unit, downstream optical fiber, and upstream optical fiber in the gate amplifier included in the main circuit or the auxiliary circuit without touching the operator. The labor and time required for the diagnosis of deterioration of the device can be remarkably reduced.

According to the electric vehicle control device of the fourth aspect of the present invention, the power supply for the gate command receiving section and the power supply for the feedback signal transmitting section in the gate amplifier included in the main circuit or the auxiliary circuit are different from each other. The output of the feedback signal transmitting unit in the power amplifier can be controlled independently without affecting the gate command receiving unit in the same gate amplifier. When the degradation diagnosis method is performed, it is possible to accurately diagnose the degradation of the feedback signal transmission unit and the optical fiber.

According to the apparatus for diagnosing deterioration of an electro-optical converter according to the fifth aspect of the present invention, the gate power supply control unit is connected to the power supply for the feedback signal transmission unit in the gate amplifier, and the voltage is controlled while the voltage is controlled. The signal transmission control unit instructs the transmission of a test signal to the gate command transmission unit in the non-contact control device, and the H and L levels of the feedback signal received by the feedback signal reception unit in the non-contact control device by the abnormality determination unit. By examining the status,
A deterioration diagnosis using the deterioration diagnosis method according to the second aspect of the present invention can be performed, and the light amount control unit is connected between a gate command transmission unit in the non-contact control device and a gate command reception unit in the gate amplifier. H, L level states of the feedback signal received by the feedback signal receiving unit in the contactless control device while connecting the end of the optical fiber to the gate command transmitting unit side and changing the amount of light and sending it out to the optical fiber. , It is possible to carry out a deterioration diagnosis using the deterioration diagnosis method according to the third aspect of the present invention.

[Brief description of the drawings]

FIG. 1 is a block diagram of a deterioration diagnosis system for performing deterioration diagnosis of an electro-optical converter according to the present invention.

FIG. 2 is a plan view showing an electric vehicle control device according to the present invention installed on a vehicle body.

FIG. 3 is a table showing combinations of signal levels of the non-contact control device and the gate command and feedback signal of the gate amplifier in the electric vehicle control device when the signal is normal and abnormal.

FIG. 4 is an explanatory diagram showing characteristics of a feedback signal transmitting unit and an upstream optical fiber in a normal state and an abnormal state in the degradation diagnosis system.

FIG. 5 is a flowchart showing a procedure for diagnosing deterioration of a feedback signal transmitting unit and an upstream optical fiber by the above-described deterioration diagnosis system.

FIG. 6 is an explanatory diagram showing characteristics of a gate command receiving unit and a down-side optical fiber in the above-described deterioration diagnosis system in normal and abnormal conditions.

FIG. 7 is a flowchart showing a procedure for diagnosing deterioration of a gate command receiving unit and a downstream optical fiber by the deterioration diagnosis system.

FIG. 8 is a block diagram of a conventional electric vehicle control device.

FIG. 9 is a graph showing power supply voltage characteristics of a general light emitting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main circuit or auxiliary circuit 2 Gate amplifier 3 Contactless control device 4 Optical fiber 5 Deterioration diagnosis device 21 Gate command receiving unit 22 Feedback signal transmitting unit 23 Receiving unit power supply 24 Transmitting unit power supply 31 Gate command transmitting unit 32 Feedback signal receiving unit 41 Downstream optical fiber 42 Upstream optical fiber 51 Gate power control unit 52 Test signal transmission control unit 53 Abnormality judgment unit 54 Light intensity control unit 60 Body 61 Case

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiko Ujiie 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Fuchu plant of Toshiba Corporation

Claims (5)

[Claims] 1. A gate command that includes a power conversion circuit and a gate amplifier that controls on / off of a switching element of the power conversion circuit, wherein the gate amplifier receives an optical gate command signal and converts the signal into an electric gate command signal. Receiving unit, and H, of the optical gate command signal received by the gate command receiving unit.
A main circuit or an auxiliary circuit having a feedback signal transmitting unit that outputs the L inversion signal as an optical feedback signal, a gate command transmitting unit that transmits the optical gate command signal,
A non-contact control device having a feedback signal receiving unit that receives the optical feedback signal, provided between the main circuit or the auxiliary circuit and the non-contact control device, and an optical gate command signal from the gate command transmission unit. An electric vehicle control device including an optical fiber for transmitting the gate command receiving unit and transmitting an optical feedback signal from the feedback signal transmitting unit to the feedback signal receiving unit, wherein the non-contact control is performed. An electric vehicle control device, wherein the device is separated from the main circuit or the auxiliary circuit, and is installed in an electric vehicle at a location where maintenance work is easy. 2. A gate command that includes a power conversion circuit and a gate amplifier that controls on / off of a switching element of the power conversion circuit, wherein the gate amplifier receives an optical gate command signal and converts the signal into an electric gate command signal. Receiving unit, and H, of the optical gate command signal received by the gate command receiving unit.
A main circuit or an auxiliary circuit having a feedback signal transmitting unit that outputs the L inversion signal as an optical feedback signal, a gate command transmitting unit that transmits the optical gate command signal,
A non-contact control device having a feedback signal receiving unit that receives the optical feedback signal, provided between the main circuit or the auxiliary circuit and the non-contact control device, and an optical gate command signal from the gate command transmission unit. Transmission to the gate command receiving unit, and an electric vehicle control device including an optical fiber for transmitting an optical feedback signal from the feedback signal transmitting unit to the feedback signal receiving unit; In a state where the power supply voltage is reduced to a specified value set for deterioration determination, the feedback signal receiving unit transmits an “H” level optical feedback signal from the feedback signal transmitting unit in the gate amplifier through the optical fiber. Check whether the signal is received, and check the feedback in the gate amplifier. Deterioration diagnosis method for an electro-optical converter for performing deterioration diagnosis of the signal transmission section and the optical fiber. 3. A gate command that includes a power conversion circuit and a gate amplifier that controls on / off of a switching element of the power conversion circuit, wherein the gate amplifier receives an optical gate command signal and converts the signal into an electric gate command signal. Receiving unit, and H, of the optical gate command signal received by the gate command receiving unit.
A main circuit or an auxiliary circuit having a feedback signal transmitting unit that outputs the L inversion signal as an optical feedback signal, a gate command transmitting unit that transmits the optical gate command signal,
A non-contact control device having a feedback signal receiving unit that receives the optical feedback signal; an optical gate command signal from the gate command transmission unit, provided between the main circuit or the auxiliary circuit and the non-contact control device. A downstream optical fiber transmitting the gate command receiving unit, and provided between the main circuit or the auxiliary circuit and the contactless control device, the optical feedback signal from the feedback signal transmitting unit the feedback signal An electric vehicle control device comprising an upstream optical fiber for transmitting to a receiving unit, wherein a feedback signal transmitting unit and an upstream optical fiber in the gate amplifier are confirmed to be normal based on the deterioration diagnosis method according to claim 2. After that, an “H” level signal is sent to the gate command receiving section through the downstream optical fiber, and the light quantity is judged to be deteriorated. It is transmitted as a test signal in a state where it is raised to a specified value set for the constant, and the feedback signal receiving unit of the non-contact control device is transmitted from the feedback signal transmitting unit in the gate amplifier through the upstream optical fiber to “ A deterioration diagnosis method for an electro-optical conversion device, which checks whether an L "level optical feedback signal is received and diagnoses deterioration of a gate command receiving unit in the gate amplifier and the downstream optical fiber. 4. An electric vehicle control device, wherein power supplies for a gate command receiving unit and a feedback signal transmitting unit in a gate amplifier included in a main circuit or an auxiliary circuit are configured differently. 5. A gate power supply control unit for connecting a power supply to a feedback signal transmission unit in a gate amplifier and controlling the voltage level thereof, and instructing a gate command transmission unit in a non-contact control device to transmit a test signal. A test signal transmission control unit, and a gate command transmission unit side end of an optical fiber connected between a gate command transmission unit in the contactless control device and a gate command reception unit in the gate amplifier. A light amount control unit that changes the light amount and sends it to the optical fiber; and a feedback signal state received by a feedback signal receiving unit in the non-contact control device, based on the feedback signal state, the optical fiber, a gate command receiving unit in the gate amplifier. And an abnormality determining unit for determining a deterioration state of the feedback signal transmitting unit.