JPH11196564A - Controller of power converter - Google Patents
Controller of power converterInfo
- Publication number
- JPH11196564A JPH11196564A JP36046297A JP36046297A JPH11196564A JP H11196564 A JPH11196564 A JP H11196564A JP 36046297 A JP36046297 A JP 36046297A JP 36046297 A JP36046297 A JP 36046297A JP H11196564 A JPH11196564 A JP H11196564A
- Authority
- JP
- Japan
- Prior art keywords
- failure
- switching element
- signal
- control
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、複数のスイッチ
ング素子からなる電力変換器のための制御装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a power converter including a plurality of switching elements.
【0002】[0002]
【従来の技術】図15に第1の従来例を示す。制御手段
101、N個のゲート駆動手段108a,108b、N
個のスイッチング素子103a,103bからなり、制
御手段101とゲート駆動手段108a,108bとの
間は駆動信号線1101a 1101bによって接続さ
れている。制御手段101の出力は、ゲート駆動手段1
08a,108bで増幅されてスイッチング素子103
a,103bに与えられる。図16に第2の従来例を示
す。第1の従来例に対し、故障検出手段202a,20
2bおよび故障信号線1201a,1201bが付加さ
れている他は、図15と同様である。なお、故障検出手
段202a,202bはスイッチング素子103a,1
03bの故障を検出して制御手段に故障を知らせるもの
である。2. Description of the Related Art FIG. 15 shows a first conventional example. Control means 101, N gate driving means 108a, 108b, N
The control means 101 and the gate drive means 108a and 108b are connected by drive signal lines 1101a and 1101b. The output of the control means 101 is the gate drive means 1
08a, 108b and the switching element 103
a, 103b. FIG. 16 shows a second conventional example. In contrast to the first conventional example, the failure detection means 202a, 20
15 is the same as FIG. 15 except that 2b and fault signal lines 1201a and 1201b are added. Note that the failure detecting means 202a, 202b is connected to the switching element 103a, 1
03b is detected to notify the control means of the failure.
【0003】[0003]
【発明が解決しようとする課題】第1の従来例では、駆
動信号線はゲート駆動手段と同数必要であり、スイッチ
ング素子の多い装置では、配線コストと配線の占有する
スペース,信号の駆動電力,ノイズによるトラブルなど
が問題となる。一方、第2の従来例では、第1の従来例
に加えてさらに故障信号線も同数必要であることから、
配線による負担は第1の従来例に比べて2倍に増加す
る。さらに、電力変換器の種別が異なる場合は駆動信号
線や故障信号線の本数、また保護制御の手順が異なるの
で、電力変換器の種別に応じて制御手段を用意しなけれ
ばならない、という問題もある。したがって、この発明
の課題は、駆動信号線や故障信号線の本数を少なくして
電力変換器を容易に制御可能とすることにある。In the first prior art, the number of drive signal lines required is equal to the number of gate drive means. In a device having a large number of switching elements, wiring cost and space occupied by wiring, signal driving power, Problems such as noise are a problem. On the other hand, in the second conventional example, the same number of fault signal lines are required in addition to the first conventional example.
The burden of the wiring is doubled as compared with the first conventional example. Furthermore, when the types of power converters are different, the number of drive signal lines and fault signal lines and the procedure of protection control are different, so that there is a problem that control means must be prepared according to the type of power converter. is there. Therefore, an object of the present invention is to make it possible to easily control a power converter by reducing the number of drive signal lines and fault signal lines.
【0004】[0004]
【課題を解決するための手段】このような課題を解決す
るため、請求項1の発明では、光ファイバを介して互い
に接続される複数の接続手段の1つにはシリアル信号送
信手段を介して制御手段を接続し、残りの接続手段には
シリアル信号受信手段およびゲート駆動手段を介して各
スイッチング素子をそれぞれ接続し、各スイッチング素
子を前記光ファイバと接続手段からなる伝送路を介して
制御可能にしている。この請求項1の発明においては、
前記伝送路を双方向の通信が可能な伝送路とするととも
に、前記スイッチング素子にはその故障を検出する故障
検出手段と、その故障信号を送信する故障信号送信手段
とを付加し、かつ、前記制御手段には各スイッチング素
子からの故障信号を受信する故障信号受信手段と、故障
が発生したときに保護動作を行なう保護制御手段とを付
加し、伝送路を介する各スイッチング素子の制御と、故
障検出およびそれにもとづく保護を可能にすることがで
きる(請求項2の発明)。In order to solve such a problem, according to the first aspect of the present invention, one of a plurality of connecting means connected to each other via an optical fiber is connected via a serial signal transmitting means. Control means are connected, and the other connecting means are connected to each switching element via a serial signal receiving means and a gate driving means, respectively, and each switching element can be controlled via a transmission line comprising the optical fiber and the connecting means. I have to. In the invention of claim 1,
The transmission path is a transmission path capable of two-way communication, and the switching element is provided with a failure detection unit that detects the failure and a failure signal transmission unit that transmits the failure signal, and The control means includes a fault signal receiving means for receiving a fault signal from each switching element, and a protection control means for performing a protection operation when a fault occurs, thereby controlling each switching element via a transmission line, Detection and protection based thereon can be enabled (the invention of claim 2).
【0005】また、請求項1の発明においては、前記伝
送路を双方向の通信が可能な伝送路とするとともに、前
記スイッチング素子にはその故障を検出する故障検出手
段と、その故障信号を送信する故障信号送信手段と、故
障に応じた保護動作を行なう保護制御手段とを付加し、
かつ、前記制御手段には各スイッチング素子からの故障
信号を受信する故障信号受信手段を付加し、伝送路を介
する各スイッチング素子の制御と、故障検出およびそれ
にもとづく保護を可能にすることができる(請求項3の
発明)。上記請求項2または3の発明においては、前記
故障検出手段に、前記制御手段からの指令で故障検出手
段出力の読み出し,記録を行なう故障記録手段を付加
し、伝送路を介する各スイッチング素子の制御,故障検
出,それにもとづく保護および故障記録を可能にするこ
とができる(請求項4の発明)。According to the first aspect of the present invention, the transmission path is a transmission path capable of two-way communication, and a failure detecting means for detecting a failure of the switching element and transmitting the failure signal to the switching element. Fault signal transmitting means, and protection control means for performing a protection operation according to the fault,
Further, a fault signal receiving means for receiving a fault signal from each switching element is added to the control means, thereby enabling control of each switching element via a transmission line, fault detection and protection based on the fault ( The invention of claim 3). In the invention according to claim 2 or 3, the fault detecting means is provided with fault recording means for reading and recording the output of the fault detecting means in accordance with a command from the control means, and controlling each switching element via a transmission line. , Failure detection, protection based on the failure detection, and failure recording can be enabled (the invention of claim 4).
【0006】請求項5の発明では、光ファイバを介して
互いに接続される複数の接続手段の1つにはシリアル信
号送信手段を介して制御手段を接続し、残りの接続手段
の各々にはシリアル信号受信手段およびパルス分配手段
を経て複数のスイッチング素子群をそれぞれゲート駆動
手段を介して接続し、各スイッチング素子を前記光ファ
イバと接続手段からなる伝送路を介して制御可能にして
いる。この請求項5の発明においては、前記伝送路を双
方向の通信が可能な伝送路とするとともに、前記スイッ
チング素子にはその故障を検出する故障検出手段と、そ
の故障信号を送信する故障信号送信手段とを付加し、か
つ、前記制御手段には各スイッチング素子からの故障信
号を受信する故障信号受信手段と、故障が発生したとき
に保護動作を行なう保護制御手段とを付加し、伝送路を
介する各スイッチング素子の制御と、故障検出およびそ
れにもとづく保護を可能にすることができる(請求項6
の発明)。According to a fifth aspect of the present invention, one of a plurality of connecting means connected to each other via an optical fiber is connected to a control means via a serial signal transmitting means, and a serial means is connected to each of the remaining connecting means. A plurality of switching element groups are connected via the gate driving means via the signal receiving means and the pulse distribution means, respectively, and each switching element is controllable via a transmission line comprising the optical fiber and the connecting means. In the invention according to claim 5, the transmission path is a transmission path capable of two-way communication, and the switching element has a failure detection means for detecting the failure, and a failure signal transmission for transmitting the failure signal. Means, and the control means further includes a fault signal receiving means for receiving a fault signal from each switching element, and a protection control means for performing a protection operation when a fault occurs. It is possible to control each switching element and detect a failure and protect based on the failure.
Invention).
【0007】また、上記請求項5の発明においては、前
記伝送路を双方向の通信が可能な伝送路とするととも
に、前記スイッチング素子にはその故障を検出する故障
検出手段と、その故障信号を送信する故障信号送信手段
と、故障に応じた保護動作を行なう保護制御手段とを付
加し、かつ、前記制御手段には各スイッチング素子から
の故障信号を受信する故障信号受信手段を付加し、伝送
路を介する各スイッチング素子の制御と、故障検出およ
びそれにもとづく保護を可能にすることができる(請求
項7の発明)。上記請求項6または7の発明において
は、前記故障検出手段に、前記制御手段からの指令で故
障検出手段出力の読み出し,記録を行なう故障記録手段
を付加し、伝送路を介する各スイッチング素子の制御,
故障検出,それにもとづく保護および故障記録を可能に
することができる(請求項8の発明)。In the invention of claim 5, the transmission path is a transmission path capable of two-way communication, and the switching element is provided with a failure detection means for detecting a failure, and a failure signal is supplied to the switching element. A fault signal transmitting means for transmitting and a protection control means for performing a protection operation according to the fault are added, and a fault signal receiving means for receiving a fault signal from each switching element is added to the control means. It is possible to control each switching element via a path, detect a failure, and protect based on the failure (the invention of claim 7). In the invention according to claim 6 or 7, a fault recording means for reading and recording the output of the fault detecting means in accordance with a command from the control means is added to the fault detecting means, so that each switching element can be controlled via a transmission line. ,
Fault detection, protection based on the fault, and fault recording can be enabled (the invention of claim 8).
【0008】[0008]
【発明の実施の形態】図1はこの発明の第1の実施の形
態を示す構成図である。図示のように、ここでは光ファ
イバ102とN+1個の接続手段104,106a,1
06bによって伝送路を形成し、第1の接続手段104
にはシリアル信号送信手段105および制御手段101
を組み合わせ、第2ないし第(N+1)の接続手段10
6a〜106bには、シリアル信号受信手段107a,
107b、ゲート駆動手段108a,108bおよびス
イッチング素子103a,103bを組み合わせて接続
する。FIG. 1 is a configuration diagram showing a first embodiment of the present invention. As shown, here, the optical fiber 102 and N + 1 connecting means 104, 106a, 1
06b, a transmission path is formed, and the first connection means 104
Includes serial signal transmitting means 105 and control means 101
And the second to (N + 1) th connection means 10
6a to 106b include serial signal receiving means 107a,
107b, gate driving means 108a and 108b, and switching elements 103a and 103b are combined and connected.
【0009】上記のような構成において、制御手段10
1から出力された指令はシリアル信号送信手段105か
ら、第1の接続手段104を通して伝送路に送出され
る。シリアル信号受信手段107aは、制御手段101
から出力された指令を第2の接続手段106aから受け
取り、ゲート駆動手段108aに送る。ゲート駆動手段
108aでは、この指令にもとづきスイッチング素子1
03aを駆動する。このような動作は、他の接続手段,
シリアル信号受信手段,ゲート駆動手段およびスイッチ
ング素子についても同様である。In the above configuration, the control means 10
The command output from 1 is transmitted from the serial signal transmitting means 105 to the transmission path through the first connecting means 104. The serial signal receiving unit 107a includes the control unit 101
Is received from the second connection means 106a and sent to the gate drive means 108a. In the gate driving means 108a, the switching element 1
03a is driven. Such an operation is based on other connection means,
The same applies to the serial signal receiving means, the gate driving means, and the switching element.
【0010】接続手段の具体例を図2に示す。同図
(a)はフォトカプラPC1,PC2、光/電気変換器
CN1および電気/光変換器CN2から構成され、光フ
ァイバからの信号はフォトカプラPC1、光/電気変換
器CN1を介して制御手段またはシリアル信号受信手段
に入力され、制御手段またはシリアル信号受信手段から
の出力は電気/光変換器CN2およびフォトカプラPC
2を介して光ファイバへ送出される。同図(b)は光/
電気変換器CN1、電気/光変換器CN2およびスイッ
チSWから構成され、光ファイバからの信号は光/電気
変換器CN1を介して制御手段またはシリアル信号受信
手段に入力され、制御手段またはシリアル信号受信手段
からの出力はスイッチSWおよび電気/光変換器CN2
を介して光ファイバへ送出される。FIG. 2 shows a specific example of the connection means. FIG. 1A is composed of photocouplers PC1 and PC2, an optical / electrical converter CN1 and an electrical / optical converter CN2, and a signal from an optical fiber is controlled by a photocoupler PC1 and an optical / electrical converter CN1. Alternatively, the signal is input to the serial signal receiving means, and the output from the control means or the serial signal receiving means is output from the electric / optical converter CN2 and the photocoupler PC.
2 to an optical fiber. FIG.
It is composed of an electrical converter CN1, an electrical / optical converter CN2 and a switch SW, and a signal from the optical fiber is input to the control means or the serial signal receiving means via the optical / electrical converter CN1, and receives the control means or the serial signal reception. The output from the means is a switch SW and an electrical / optical converter CN2.
Through the optical fiber.
【0011】図3はこの発明の第2の実施の形態を示す
構成図である。図1に示すものに対し、故障信号受信手
段203、保護制御手段204、故障検出手段202
a,202b、故障信号送信手段201a,201bを
付加した点が特徴である。また、光ファイバによる伝送
路205は、双方向伝送機能を有している。このような
構成におけるスイッチング素子の駆動方法は図1の場合
と同様なので、ここではスイッチング素子に故障が発生
した場合の動作について説明する。FIG. 3 is a block diagram showing a second embodiment of the present invention. 1, a fault signal receiving means 203, a protection control means 204, a fault detecting means 202
a, 202b and fault signal transmitting means 201a, 201b. Further, the transmission path 205 using an optical fiber has a bidirectional transmission function. Since the driving method of the switching element in such a configuration is the same as that in the case of FIG. 1, the operation when a failure occurs in the switching element will be described here.
【0012】故障検出手段の具体例を図4に示す。同図
(a)はスイッチング素子に流れる電流を検出し、過電
流のとき故障と判断するものであり、同図(b)はスイ
ッチング素子をオンにする信号を与えても、論理的にオ
ンしたと判別できないとき故障と判断するものである。
そして、例えば故障検出手段202aが故障を検出する
と、故障信号送信手段201aおよび第2の接続手段1
06aを通して、故障信号が光ファイバによる伝送路2
05に送られる。なお、他のスイッチング素子の故障の
場合も上記と同様である。故障信号受信手段203は第
2の接続手段104を介して故障信号を受信し、制御手
段101と保護制御手段204に通知する。これによ
り、保護制御手段204は直ちに保護の指令をシリアル
送信手段105を介して送信するとともに、制御手段1
01は所定の故障処理を実行する。FIG. 4 shows a specific example of the failure detecting means. FIG. 7A shows the current flowing through the switching element and determines that a fault occurs when an overcurrent occurs. FIG. 8B shows that the signal is turned on logically even when a signal for turning on the switching element is given. If it cannot be determined that a failure has occurred, a failure is determined.
When the failure detecting means 202a detects a failure, for example, the failure signal transmitting means 201a and the second connecting means 1
06a through the optical fiber transmission line 2
05. The same applies to the case of a failure of another switching element. The failure signal receiving means 203 receives the failure signal via the second connection means 104 and notifies the control means 101 and the protection control means 204. As a result, the protection control unit 204 immediately transmits a protection instruction via the serial transmission unit 105, and
01 executes a predetermined failure process.
【0013】保護制御手段による保護動作の具体例を図
5に示す。これは、同図(a)のような2レベルインバ
ータに対し、同図(b)の如き処理を行なうものであ
る。すなわち、同図(a)のような2レベルインバータ
で故障を検出すると、そのゲートを遮断することによ
り、保護を図る例である。保護制御手段による保護動作
の別の具体例を図6に示す。これは、同図(a)のよう
な3レベルインバータに対し、同図(b)の如き処理を
行なうもので、同図(a)のようなインバータで故障が
生じたときに、全ゲートを遮断してしまうのではなく、
遮断順序を考慮してゲートを遮断することで保護を図る
例である。FIG. 5 shows a specific example of the protection operation by the protection control means. This is to perform processing as shown in FIG. 2B on a two-level inverter as shown in FIG. That is, in this example, when a failure is detected by a two-level inverter as shown in FIG. FIG. 6 shows another specific example of the protection operation by the protection control means. This is a process in which a three-level inverter as shown in FIG. 3A is processed as shown in FIG. 3B. When a fault occurs in the inverter as shown in FIG. Instead of blocking
This is an example in which protection is performed by shutting off the gate in consideration of the shutoff order.
【0014】図7はこの発明の第3の実施の形態を示す
構成図である。図1に示すものに対し、故障信号受信手
段203、故障検出手段202a,202b、故障信号
送信手段201a,201bおよび保護制御手段301
a,301bを付加した点が特徴である。また、光ファ
イバによる伝送路205は、双方向伝送機能を有してい
る。図3と異なる点は、保護制御手段を制御手段側には
置かずに、スイッチング素子側に個別に設けるようにし
た点にある。例えば、故障検出手段202aがスイッチ
ング素子103aの故障を検出すると、故障信号送信手
段201aおよび第2の接続手段106aを通して故障
信号を送出する。保護制御手段301aは故障信号を受
けると、ゲート駆動手段108aに対し素子を保護する
ための保護動作を実行させる。他のシリアル信号受信手
段107bで故障信号を受信すると、保護制御手段30
1bに報知することにより、スイッチング素子103b
を保護するための保護動作を実行させる。このように、
スイッチング素子が故障した場合は、対応する各保護制
御手段が協調して保護を行なうようにしている。FIG. 7 is a block diagram showing a third embodiment of the present invention. 1 is different from that shown in FIG. 1 in that the fault signal receiving means 203, the fault detecting means 202a and 202b, the fault signal transmitting means 201a and 201b, and the protection control means 301 are provided.
The feature is that a and 301b are added. Further, the transmission path 205 using an optical fiber has a bidirectional transmission function. The difference from FIG. 3 is that the protection control means is not provided on the control means side but is provided separately on the switching element side. For example, when the failure detecting means 202a detects a failure of the switching element 103a, it sends a failure signal through the failure signal transmitting means 201a and the second connecting means 106a. Upon receiving the failure signal, the protection control unit 301a causes the gate driving unit 108a to execute a protection operation for protecting the element. When the other serial signal receiving unit 107b receives a failure signal, the protection control unit 30
1b, the switching element 103b
To perform a protection operation for protecting. in this way,
When the switching element fails, the corresponding protection control means cooperate to perform protection.
【0015】図8はこの発明の第4の実施の形態を示す
構成図である。これは、図3に示すものに対し、故障信
号記録手段401a,401bを付加した点が特徴であ
る。したがって、例えば第1の故障検出手段202aが
スイッチング素子103aの故障を検出すると、故障信
号記録手段401aは故障信号波形を記録する働きをす
る。そして、制御手段101からの故障記録読み出しの
指令をシリアル信号受信手段107aが受信すると、故
障信号記録手段401aが記録を読み出し、故障信号送
信手段201aを通して制御手段101に送信する。他
の故障信号記録手段も同様に、対応するスイッチング素
子の故障の記録,読み出しを行なう。図9に図8の変形
例を示す。これは、図7に示すものに対し、故障信号記
録手段401a,401bを付加したもので、その機
能,動作は図8の場合と同様なので、説明は省略する。FIG. 8 is a block diagram showing a fourth embodiment of the present invention. This is characterized in that failure signal recording means 401a and 401b are added to the configuration shown in FIG. Therefore, for example, when the first failure detection means 202a detects a failure of the switching element 103a, the failure signal recording means 401a functions to record a failure signal waveform. When the serial signal receiving unit 107a receives a failure record reading command from the control unit 101, the failure signal recording unit 401a reads the record and transmits the record to the control unit 101 through the failure signal transmission unit 201a. Similarly, the other failure signal recording means records and reads the failure of the corresponding switching element. FIG. 9 shows a modification of FIG. This is obtained by adding failure signal recording means 401a and 401b to the one shown in FIG. 7, and its functions and operations are the same as those in FIG.
【0016】図10はこの発明の第5の実施の形態を示
す構成図である。図1に示すものとの相違点は、第2〜
第K+1の接続手段605a,605bに接続された各
シリアル信号受信手段601a,601bの出力端にパ
ルス分配手段602a,602bがそれぞれ接続され、
その出力端にゲート駆動手段603a,603b,60
3c,603dを介してスイッチング素子604a,6
04b,604c,604dが接続されている点であ
る。パルス分配手段602a,602bは、シリアル信
号受信手段601a,601bで受信した制御手段から
の指令を、ゲート駆動手段603a,603b,603
c,603dに分配する。つまり、接続手段とパルス分
配手段とを、複数(1群)のスイッチング素子で共有さ
せるようにしている。これにより、制御手段101は、
K個のシリアル信号受信手段に指令を送信することで、
K個よりも多いすべてのスイッチング素子を制御するこ
とが可能となる。FIG. 10 is a configuration diagram showing a fifth embodiment of the present invention. The difference from the one shown in FIG.
Pulse distribution means 602a and 602b are connected to the output terminals of the serial signal receiving means 601a and 601b connected to the (K + 1) th connection means 605a and 605b, respectively.
Gate driving means 603a, 603b, 60
Switching elements 604a, 604 via 3c, 603d
04b, 604c and 604d are connected. The pulse distribution units 602a and 602b transmit commands from the control unit received by the serial signal receiving units 601a and 601b to gate driving units 603a, 603b and 603.
c, 603d. That is, the connection unit and the pulse distribution unit are shared by a plurality (one group) of switching elements. Thereby, the control means 101
By sending a command to the K serial signal receiving means,
It becomes possible to control all the switching elements more than K.
【0017】図11はこの発明の第6の実施の形態を示
す構成図である。図10に示すものに対し、光ファイバ
による伝送路205に双方向の通信機能を持たせるとと
もに、スイッチング素子604a,604b,604
c,604dに対し、その故障を検出する故障検出手段
702a,702b,702c,702dと、その信号
を送信する故障信号送出手段701a,701b,70
1c,701dとを付加した点が特徴である。例えば、
スイッチング素子604a,604bに接続されている
故障検出手段702a,702bがスイッチング素子の
故障を検出すると、故障検出信号が故障信号送出手段7
01aを介して制御手段101に送られる。これによ
り、図3と同様な制御が可能となる。FIG. 11 is a block diagram showing a sixth embodiment of the present invention. 10 is different from that shown in FIG. 10 in that a transmission path 205 using an optical fiber is provided with a bidirectional communication function, and switching elements 604a, 604b, and 604 are provided.
c, 604d, failure detection means 702a, 702b, 702c, 702d for detecting the failure, and failure signal transmission means 701a, 701b, 70 for transmitting the signal.
The feature is that 1c and 701d are added. For example,
When the failure detection means 702a, 702b connected to the switching elements 604a, 604b detects a failure of the switching element, the failure detection signal is sent to the failure signal sending means 7
01a to the control means 101. Thereby, the same control as in FIG. 3 can be performed.
【0018】図12はこの発明の第7の実施の形態を示
す構成図である。図10に示すものとの相違点は、光フ
ァイバによる伝送路205に双方向の通信機能を持たせ
るとともに、スイッチング素子604a,604b,6
04c,604dに対し、その故障を検出する故障検出
手段702a,702b,702c,702dと、その
信号を送信する故障信号送出手段701a,701b
と、保護制御手段801a,801bとが付加され、制
御手段101に対し故障信号受信手段203が付加され
ている点が特徴である。例えば、スイッチング素子60
4a,604bに着目すると、各々に接続されている故
障検出手段702a,702bにて検出された故障は、
故障信号送出手段701aによって送信されるととも
に、保護制御手段801aに与えられる。保護制御手段
801aはパルス分配手段602aを制御して、スイッ
チング素子群の保護を行なう。さらに、他の保護制御手
段は、シリアル信号受信手段から故障信号を受け、そこ
に接続されているスイッチング素子群の保護を行なう。
制御手段側の動作については、図10の場合と同様であ
る。FIG. 12 is a configuration diagram showing a seventh embodiment of the present invention. The difference from the one shown in FIG. 10 is that the transmission line 205 using an optical fiber has a bidirectional communication function and the switching elements 604a, 604b, and 6
04c, 604d, failure detection means 702a, 702b, 702c, 702d for detecting the failure, and failure signal transmission means 701a, 701b for transmitting the signal.
And protection control means 801a and 801b are added, and a fault signal receiving means 203 is added to the control means 101. For example, the switching element 60
Focusing on 4a and 604b, the faults detected by the fault detecting means 702a and 702b connected to each of them are as follows.
The signal is transmitted by the failure signal transmitting means 701a and is also given to the protection control means 801a. The protection control unit 801a controls the pulse distribution unit 602a to protect the switching element group. Further, the other protection control means receives the failure signal from the serial signal receiving means and protects the switching element group connected thereto.
The operation on the control means side is the same as in the case of FIG.
【0019】図13はこの発明の第8の実施の形態を示
す構成図である。図11との相違点は、故障信号記録手
段901a,901bが付加された点にある。この故障
信号記録手段901a,901bは故障検出手段702
a,702b,702c,702dの出力を受けて故障
信号の波形記録を行なう。すなわち、制御手段101か
らの読み出し指令をシリアル信号受信手段601a,6
01bで受信すると、故障信号記録手段901a,90
1bは記録を読み出し、故障信号送出手段701a,7
01bを介して制御手段101へ送信する。図14に図
13の変形例を示す。これは、図12に示すものに対
し、故障信号記録手段401a,401bを付加したも
ので、その機能,動作は図13の場合と同様なので、説
明は省略する。FIG. 13 is a block diagram showing an eighth embodiment of the present invention. The difference from FIG. 11 is that failure signal recording means 901a and 901b are added. The failure signal recording means 901a and 901b
a, 702b, 702c, and 702d are received to record the waveform of the fault signal. That is, the read command from the control means 101 is transmitted to the serial signal receiving means 601a,
01b, failure signal recording means 901a, 90b
1b reads the record, and outputs the failure signal sending means 701a,
01b to the control means 101. FIG. 14 shows a modification of FIG. This is obtained by adding failure signal recording means 401a and 401b to the one shown in FIG. 12, and its functions and operations are the same as those in FIG.
【0020】[0020]
【発明の効果】この発明によれば、様々な構成の電力変
換器を光ファイバによる1組の伝送路で制御できるの
で、電力変換器の構成やスイッチング素子数が異なる場
合でも容易に適用することができる。また、構成が複雑
な場合でも、配線の負担を大幅に削減できる。さらに、
請求1〜4の発明では、スイッチング素子間が光ファイ
バで絶縁されているので、高電圧を使用する電力変換器
でも容易に、しかも高い信頼性をもって制御できる。請
求5〜8の発明では、スイッチング素子をグループ化し
て駆動できるので、スイッチング素子の多い電力変換器
でも、容易かつ高い信頼性をもって制御することができ
る。According to the present invention, power converters of various configurations can be controlled by a single set of transmission lines using optical fibers, so that the present invention can be easily applied even when the configuration of the power converters and the number of switching elements are different. Can be. Further, even when the configuration is complicated, the burden of wiring can be greatly reduced. further,
According to the first to fourth aspects of the present invention, since the switching elements are insulated by the optical fiber, even a power converter using a high voltage can be controlled easily and with high reliability. According to the inventions of claims 5 to 8, switching elements can be grouped and driven, so that even a power converter having many switching elements can be controlled easily and with high reliability.
【0021】加えて、請求項2,6の発明では、スイッ
チング素子をその近傍で保護できるので、高速な保護が
可能となる。特に、請求項6の発明では、スイッチング
素子群に一括してパルスを分配するようにしているの
で、スイッチング素子側での高速な保護協調が容易とな
る。また、請求項3,7の発明では、全スイッチング素
子の故障信号が得られるので、電力変換器全体の保護協
調をとることができる。さらに、請求項4,8の発明で
は、スイッチング素子近傍で故障記録ができるので、制
御手段ハードウエアの負担を軽減できる。特に、請求項
8の発明では、複数の故障信号を一括して記録すること
ができる。In addition, according to the second and sixth aspects of the present invention, since the switching element can be protected in the vicinity thereof, high-speed protection can be achieved. In particular, in the invention of claim 6, since the pulses are distributed to the switching element group at a time, high-speed protection coordination on the switching element side is facilitated. Further, according to the third and seventh aspects of the present invention, since the failure signals of all the switching elements can be obtained, the protection coordination of the entire power converter can be achieved. Further, according to the fourth and eighth aspects of the present invention, since failure recording can be performed in the vicinity of the switching element, the load on the control means hardware can be reduced. In particular, according to the invention of claim 8, a plurality of fault signals can be recorded collectively.
【図1】この発明の第1の実施の形態を示す構成図であ
る。FIG. 1 is a configuration diagram showing a first embodiment of the present invention.
【図2】接続手段の具体例を示すブロック図である。FIG. 2 is a block diagram showing a specific example of a connection unit.
【図3】この発明の第2の実施の形態を示す構成図であ
る。FIG. 3 is a configuration diagram showing a second embodiment of the present invention.
【図4】故障検出手段の具体例を示す構成図である。FIG. 4 is a configuration diagram showing a specific example of a failure detection unit.
【図5】保護制御手段の第1の具体例を示す説明図であ
る。FIG. 5 is an explanatory diagram showing a first specific example of protection control means.
【図6】保護制御手段の第2の具体例を示す説明図であ
る。FIG. 6 is an explanatory diagram showing a second specific example of the protection control means.
【図7】この発明の第3の実施の形態を示す構成図であ
る。FIG. 7 is a configuration diagram showing a third embodiment of the present invention.
【図8】この発明の第4の実施の形態を示す構成図であ
る。FIG. 8 is a configuration diagram showing a fourth embodiment of the present invention.
【図9】図8の変形例を示す構成図である。FIG. 9 is a configuration diagram showing a modification of FIG. 8;
【図10】この発明の第5の実施の形態を示す構成図で
ある。FIG. 10 is a configuration diagram showing a fifth embodiment of the present invention.
【図11】この発明の第6の実施の形態を示す構成図で
ある。FIG. 11 is a configuration diagram showing a sixth embodiment of the present invention.
【図12】この発明の第7の実施の形態を示す構成図で
ある。FIG. 12 is a configuration diagram showing a seventh embodiment of the present invention.
【図13】この発明の第8の実施の形態を示す構成図で
ある。FIG. 13 is a configuration diagram showing an eighth embodiment of the present invention.
【図14】図13の変形例を示す構成図である。FIG. 14 is a configuration diagram showing a modification of FIG.
【図15】第1の従来例を示す構成図である。FIG. 15 is a configuration diagram showing a first conventional example.
【図16】第2の従来例を示す構成図である。FIG. 16 is a configuration diagram showing a second conventional example.
101…制御手段、102,205…光ファイバ、10
3a,103b,604a,604b…スイッチング素
子、104,106a,106b,605a,605b
…接続手段、105…シリアル送信手段、107a,1
07b,601a,601b…シリアル受信手段、10
8a,108b,603a,603b…ゲート駆動手
段、201a,201b,701a,701b…故障信
号送信手段、202a,202b,702a,702b
…故障検出手段、203…故障信号受信手段、204,
301a,301b,801a,801b…保護制御手
段、401a,401b,901a,901b…故障信
号記録手段、103a,103b…パルス分配手段。101: control means, 102, 205: optical fiber, 10
3a, 103b, 604a, 604b switching elements, 104, 106a, 106b, 605a, 605b
... connecting means, 105 ... serial transmitting means, 107a, 1
07b, 601a, 601b... Serial receiving means, 10
8a, 108b, 603a, 603b gate drive means, 201a, 201b, 701a, 701b failure signal transmission means, 202a, 202b, 702a, 702b
... failure detecting means, 203 ... failure signal receiving means, 204,
301a, 301b, 801a, 801b ... protection control means, 401a, 401b, 901a, 901b ... failure signal recording means, 103a, 103b ... pulse distribution means.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 笹川 清明 神奈川県川崎市川崎区田辺新田1番1号 富士電機株式会社内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kiyoaki Sasakawa 1-1-1, Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Fuji Electric Co., Ltd.
Claims (8)
数の接続手段の1つにはシリアル信号送信手段を介して
制御手段を接続し、残りの接続手段にはシリアル信号受
信手段およびゲート駆動手段を介して各スイッチング素
子をそれぞれ接続し、各スイッチング素子を前記光ファ
イバと接続手段からなる伝送路を介して制御可能にした
ことを特徴とする電力変換器の制御装置。1. A control means is connected to one of a plurality of connecting means connected to each other via an optical fiber via a serial signal transmitting means, and the other connecting means is connected to a serial signal receiving means and a gate driving means. A control device for a power converter, wherein each switching element is connected via a transmission line, and each switching element is controllable via a transmission line including the optical fiber and a connection unit.
路とするとともに、前記スイッチング素子にはその故障
を検出する故障検出手段と、その故障信号を送信する故
障信号送信手段とを付加し、かつ、前記制御手段には各
スイッチング素子からの故障信号を受信する故障信号受
信手段と、故障が発生したときに保護動作を行なう保護
制御手段とを付加し、伝送路を介する各スイッチング素
子の制御と、故障検出およびそれにもとづく保護を可能
にしたことを特徴とする請求項1に記載の電力変換器の
制御装置。2. The transmission line is a transmission line capable of two-way communication, and the switching element further includes a failure detection unit that detects a failure and a failure signal transmission unit that transmits the failure signal. And the control means further includes a fault signal receiving means for receiving a fault signal from each switching element, and a protection control means for performing a protection operation when a fault occurs. The control device for a power converter according to claim 1, wherein the control of the power converter, the failure detection, and the protection based on the failure are enabled.
路とするとともに、前記スイッチング素子にはその故障
を検出する故障検出手段と、その故障信号を送信する故
障信号送信手段と、故障に応じた保護動作を行なう保護
制御手段とを付加し、かつ、前記制御手段には各スイッ
チング素子からの故障信号を受信する故障信号受信手段
を付加し、伝送路を介する各スイッチング素子の制御
と、故障検出およびそれにもとづく保護を可能にしたこ
とを特徴とする請求項1に記載の電力変換器の制御装
置。3. The transmission path is a transmission path capable of two-way communication, the switching element includes a failure detection unit that detects a failure, a failure signal transmission unit that transmits a failure signal, and a failure signal transmission unit. Protection control means for performing a protection operation according to the above, and a failure signal receiving means for receiving a failure signal from each switching element is added to the control means, and control of each switching element via a transmission path is performed. The control device for a power converter according to claim 1, wherein failure detection and protection based thereon are enabled.
の指令で故障検出手段出力の読み出し,記録を行なう故
障記録手段を付加し、伝送路を介する各スイッチング素
子の制御,故障検出,それにもとづく保護および故障記
録を可能にしたことを特徴とする請求項2または3に記
載の電力変換器の制御装置。4. A failure recording means for reading and recording the output of the failure detection means in accordance with a command from the control means to the failure detection means, for controlling each switching element via a transmission line, detecting a failure, and based on the control. 4. The control device for a power converter according to claim 2, wherein protection and failure recording are enabled.
数の接続手段の1つにはシリアル信号送信手段を介して
制御手段を接続し、残りの接続手段の各々にはシリアル
信号受信手段およびパルス分配手段を経て複数のスイッ
チング素子群をそれぞれゲート駆動手段を介して接続
し、各スイッチング素子を前記光ファイバと接続手段か
らなる伝送路を介して制御可能にしたことを特徴とする
電力変換器の制御装置。5. A control means is connected to one of a plurality of connecting means connected to each other via an optical fiber via a serial signal transmitting means, and a serial signal receiving means and a pulse are connected to each of the remaining connecting means. A plurality of switching element groups are connected via a gate driving means via distribution means, and each switching element is controllable via a transmission line comprising the optical fiber and the connection means. Control device.
路とするとともに、前記スイッチング素子にはその故障
を検出する故障検出手段と、その故障信号を送信する故
障信号送信手段とを付加し、かつ、前記制御手段には各
スイッチング素子からの故障信号を受信する故障信号受
信手段と、故障が発生したときに保護動作を行なう保護
制御手段とを付加し、伝送路を介する各スイッチング素
子の制御と、故障検出およびそれにもとづく保護を可能
にしたことを特徴とする請求項5に記載の電力変換器の
制御装置。6. The transmission line is a transmission line capable of two-way communication, and the switching element is provided with a failure detection unit for detecting a failure and a failure signal transmission unit for transmitting the failure signal. And the control means further includes a fault signal receiving means for receiving a fault signal from each switching element, and a protection control means for performing a protection operation when a fault occurs. 6. The control device for a power converter according to claim 5, wherein the control of the power converter, the failure detection, and the protection based on the failure are enabled.
路とするとともに、前記スイッチング素子にはその故障
を検出する故障検出手段と、その故障信号を送信する故
障信号送信手段と、故障に応じた保護動作を行なう保護
制御手段とを付加し、かつ、前記制御手段には各スイッ
チング素子からの故障信号を受信する故障信号受信手段
を付加し、伝送路を介する各スイッチング素子の制御
と、故障検出およびそれにもとづく保護を可能にしたこ
とを特徴とする請求項5に記載の電力変換器の制御装
置。7. The transmission line is a transmission line capable of two-way communication, the switching element includes a failure detection unit that detects a failure, a failure signal transmission unit that transmits a failure signal, and a failure signal transmission unit. Protection control means for performing a protection operation according to the above, and a failure signal receiving means for receiving a failure signal from each switching element is added to the control means, and control of each switching element via a transmission path is performed. 6. The power converter control device according to claim 5, wherein failure detection and protection based on the failure detection are enabled.
の指令で故障検出手段出力の読み出し,記録を行なう故
障記録手段を付加し、伝送路を介する各スイッチング素
子の制御,故障検出,それにもとづく保護および故障記
録を可能にしたことを特徴とする請求項6または7に記
載の電力変換器の制御装置。8. A failure recording means for reading and recording the output of the failure detection means in accordance with a command from the control means to the failure detection means, for controlling each switching element via a transmission line, detecting a failure, and based on the control. 8. The control device for a power converter according to claim 6, wherein protection and fault recording are enabled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36046297A JP3102401B2 (en) | 1997-12-26 | 1997-12-26 | Control device for power converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36046297A JP3102401B2 (en) | 1997-12-26 | 1997-12-26 | Control device for power converter |
Publications (2)
Publication Number | Publication Date |
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JPH11196564A true JPH11196564A (en) | 1999-07-21 |
JP3102401B2 JP3102401B2 (en) | 2000-10-23 |
Family
ID=18469515
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JP36046297A Expired - Fee Related JP3102401B2 (en) | 1997-12-26 | 1997-12-26 | Control device for power converter |
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JP (1) | JP3102401B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002037655A3 (en) * | 2000-11-02 | 2003-08-07 | American Superconductor Corp | Integrated multi-level inverter assembly |
EP1337030A2 (en) * | 2002-02-13 | 2003-08-20 | Semikron Elektronik GmbH | Control for converter valves |
JP2004248493A (en) * | 2003-02-10 | 2004-09-02 | Alstom | Control method of electronic power component, control system, and data recording support including instructions to execute the control method |
WO2011120572A1 (en) * | 2010-03-31 | 2011-10-06 | Areva T&D Uk Limited | Converter |
EP2458726A4 (en) * | 2009-07-21 | 2015-08-05 | Hitachi Ltd | Power conversion device |
US9564829B2 (en) | 2012-10-01 | 2017-02-07 | Abb Technology Ltd | Converter arm and associated converter device |
US9831758B2 (en) | 2014-01-20 | 2017-11-28 | Abb Schweiz Ag | Master/slave controller system in ring topology for modular multilevel converters |
-
1997
- 1997-12-26 JP JP36046297A patent/JP3102401B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002037655A3 (en) * | 2000-11-02 | 2003-08-07 | American Superconductor Corp | Integrated multi-level inverter assembly |
EP1337030A2 (en) * | 2002-02-13 | 2003-08-20 | Semikron Elektronik GmbH | Control for converter valves |
EP1337030A3 (en) * | 2002-02-13 | 2004-09-29 | Semikron Elektronik GmbH | Control for converter valves |
JP2004248493A (en) * | 2003-02-10 | 2004-09-02 | Alstom | Control method of electronic power component, control system, and data recording support including instructions to execute the control method |
EP2458726A4 (en) * | 2009-07-21 | 2015-08-05 | Hitachi Ltd | Power conversion device |
WO2011120572A1 (en) * | 2010-03-31 | 2011-10-06 | Areva T&D Uk Limited | Converter |
US9564829B2 (en) | 2012-10-01 | 2017-02-07 | Abb Technology Ltd | Converter arm and associated converter device |
US9831758B2 (en) | 2014-01-20 | 2017-11-28 | Abb Schweiz Ag | Master/slave controller system in ring topology for modular multilevel converters |
EP2897268B1 (en) * | 2014-01-20 | 2022-01-05 | ABB Schweiz AG | Master/slave controller system in ring topology for modular multilevel converters |
Also Published As
Publication number | Publication date |
---|---|
JP3102401B2 (en) | 2000-10-23 |
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