JPH0835483A - Electromagnetic pump device - Google Patents
Electromagnetic pump deviceInfo
- Publication number
- JPH0835483A JPH0835483A JP6175453A JP17545394A JPH0835483A JP H0835483 A JPH0835483 A JP H0835483A JP 6175453 A JP6175453 A JP 6175453A JP 17545394 A JP17545394 A JP 17545394A JP H0835483 A JPH0835483 A JP H0835483A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic pump
- power supply
- frequency power
- pump
- vvvf
- 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
Landscapes
- Inverter Devices (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Ac-Ac Conversion (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、冷却材に液体金属を使
用する高速増殖炉等の冷却材を移送する電磁ポンプ装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic pump device for transferring a coolant such as a fast breeder reactor using liquid metal as the coolant.
【0002】[0002]
【従来の技術】液体金属冷却型の高速増殖炉では、液体
金属ナトリウムを冷却材として使用しており、世界各国
にて開発が行なわれている。その冷却システムの概要は
図9の系統構成図に示すように、原子炉炉心1で発生し
た熱は、一次冷却材ポンプ2によって循環される一次冷
却系3における流体金属ナトリウムにより中間熱交換器
4に伝達され、この中間熱交換器4によって二次冷却系
5における流体金属ナトリウムに伝えられる。2. Description of the Related Art Liquid metal cooled fast breeder reactors use liquid metal sodium as a coolant and are being developed in various countries around the world. As shown in the system configuration diagram of FIG. 9, the outline of the cooling system is such that the heat generated in the nuclear reactor core 1 is circulated by the primary coolant pump 2 by the fluid metal sodium in the primary cooling system 3 to the intermediate heat exchanger 4 To the fluid metal sodium in the secondary cooling system 5 by the intermediate heat exchanger 4.
【0003】さらに、二次冷却系5の液体金属ナトリウ
ムは、二次冷却材ポンプ6により蒸気発生器7に移送さ
れて、これにより伝達した熱は高温の水あるいは蒸気に
熱交換され、図示しないタービンを駆動して発電等に利
用されている。Further, the liquid metal sodium in the secondary cooling system 5 is transferred to the steam generator 7 by the secondary coolant pump 6, and the heat transferred by this is exchanged with high temperature water or steam, which is not shown. It is used for power generation by driving a turbine.
【0004】このようにして液体金属冷却型の高速増殖
炉では、液体金属ナトリウムは高温水および蒸気への熱
伝達媒体として使用され、一次冷却材ポンプ2および二
次冷却材ポンプ6は、その熱伝達に使用されている。As described above, in the liquid metal cooling type fast breeder reactor, liquid metal sodium is used as a heat transfer medium for high-temperature water and steam, and the primary coolant pump 2 and the secondary coolant pump 6 have their heat sources. Used for transmission.
【0005】前記一次冷却材ポンプ2および二次冷却材
ポンプ6の運転状態は、原子炉炉心1の発生熱を伝達し
て利用するための通常運転状態と、原子炉炉心1におけ
る核***を停止させた後の崩壊熱等の残留熱を、伝達し
て排熱するための残留熱除去運転状態の2つに大きく分
かれる。The operating states of the primary coolant pump 2 and the secondary coolant pump 6 are the normal operating state for transmitting and utilizing the heat generated in the reactor core 1 and the nuclear fission in the nuclear reactor core 1. The residual heat, such as decay heat after the heat treatment, is roughly divided into two states, that is, a residual heat removal operation state for transmitting and discharging heat.
【0006】先ず、通常運転状態では、原子炉炉心1の
出力の変更時には冷却材である 300℃以上の高温の液体
金属ナトリウムの温度の変化をできる限り緩和し、この
冷却材を内包する容器や配管等の熱過渡変化に伴う疲労
を抑制するため、一次冷却材ポンプ2および二次冷却材
ポンプ6は、原子炉炉心1の出力の変化にほぼ比例して
一次冷却系3や二次冷却系5における液体金属ナトリウ
ムの流量を制御している。First, in the normal operation state, when the output of the reactor core 1 is changed, the temperature change of liquid metal sodium having a high temperature of 300 ° C. or higher, which is a coolant, is alleviated as much as possible, and a container containing this coolant is used. In order to suppress fatigue due to thermal transient changes in pipes and the like, the primary coolant pump 2 and the secondary coolant pump 6 have a primary cooling system 3 and a secondary cooling system that are substantially proportional to changes in the output of the reactor core 1. 5 controls the flow rate of liquid sodium metal.
【0007】このために、原子炉出力の変化に応じた大
流量から小流量までの高い制御安定性が要求される。さ
らに、プラントの規模が大きくなり、原子炉炉心1の出
力が大きくなるに伴い、冷却材ポンプも大容量のものが
要求される。For this reason, high control stability from a large flow rate to a small flow rate according to changes in the reactor output is required. Furthermore, as the scale of the plant increases and the output of the nuclear reactor core 1 increases, a large capacity coolant pump is required.
【0008】また、残留熱除去運転は、事故発生等の異
常時にも原子炉炉心1における残留熱を除去し続けて、
原子炉炉心1の健全性を確保するために必要であり、原
子力プラントの安全の確保のために高い信頼性が要求さ
れることから、多重性等が考慮しているが、必要流量は
小さく、かつ一定流量で良い。Further, in the residual heat removal operation, the residual heat in the reactor core 1 is continuously removed even when an abnormality such as an accident occurs,
It is necessary to ensure the soundness of the reactor core 1 and high reliability is required to ensure the safety of the nuclear power plant, so multiplicity is taken into consideration, but the required flow rate is small. And a constant flow rate is sufficient.
【0009】従来は、以上の2つの異なる運転状態の要
求を満足するために、一次冷却材ポンプ2および二次冷
却材ポンプ6の駆動電源装置として、通常運転用駆動電
源装置と残留熱除去運転用駆動電源装置の両方を設置し
ている。Conventionally, in order to satisfy the requirements of the above two different operating states, the drive power supply device for the primary coolant pump 2 and the secondary coolant pump 6 is used as a drive power supply device for normal operation and a residual heat removal operation. Both of the drive power supply units are installed.
【0010】なお、電源喪失等によって通常運転用駆動
電源装置が緊急停止した場合には、当該駆動電源装置に
保有させた慣性モーメントにより、一次冷却材ポンプ2
および二次冷却材ポンプ6におけるコーストダウン時の
流量を確保し、冷却材流量の低下後に、残留熱除去運転
用駆動電源装置に引き継ぐように構成している。When the drive power supply unit for normal operation is urgently stopped due to loss of power supply or the like, the primary coolant pump 2 is driven by the moment of inertia of the drive power supply unit.
Also, the secondary coolant pump 6 is configured to secure a flow rate during coast down, and to take over to the residual heat removal operation drive power supply device after the coolant flow rate is reduced.
【0011】図10のブロック構成図は、一次冷却材ポン
プ2および二次冷却材ポンプ6に電磁ポンプを採用した
場合の駆動電源装置を示す。通常運転用駆動電源装置と
しては、通常運転用電源8からコーストダウン開始信号
9で作動するコーストダウン開始用スイッチ10を経由
し、誘導電動機11aとフライホイール11b、および同期
発電機11cからなるMGセット11を介して可変電圧可変
周波数電源装置(以下VVVF装置と略称する)12に供
給し、VVVF装置12は電磁ポンプ13への出力電圧制御
を行う。The block diagram of FIG. 10 shows a driving power supply device in which an electromagnetic pump is used for the primary coolant pump 2 and the secondary coolant pump 6. As a drive power supply device for normal operation, an MG set including an induction motor 11a, a flywheel 11b, and a synchronous generator 11c via a coast down start switch 10 that operates by a coast down start signal 9 from a normal operation power supply 8. The voltage is supplied to a variable voltage variable frequency power supply device (hereinafter abbreviated as VVVF device) 12 via 11, and the VVVF device 12 controls the output voltage to the electromagnetic pump 13.
【0012】これにより、電磁ポンプ13の巻線13aに流
れる電流が変化して、電磁ポンプ13における吐出流量の
制御を行なう。なお、MGセット11には発電機調整装置
14が設けられており、さらに、VVVF12の出力は、コ
ーストダウン引継信号15により作動する切替スイッチ16
を介して電磁ポンプ13に伝達される。As a result, the current flowing through the winding 13a of the electromagnetic pump 13 changes, and the discharge flow rate in the electromagnetic pump 13 is controlled. In addition, the MG set 11 has a generator adjustment device.
14 is provided, and the output of the VVVF 12 is a changeover switch 16 which is operated by a coast down takeover signal 15.
Is transmitted to the electromagnetic pump 13 via.
【0013】また、電磁ポンプ13をコーストダウンさせ
る時には、MGセット11が有する大きな慣性モーメント
(必要によりフライホイール11cを増設する)により逓
減制御を行う。When the electromagnetic pump 13 is to be coasted down, the MG set 11 has a large moment of inertia (a flywheel 11c is added if necessary) to perform a diminishing control.
【0014】残留熱除去運転用駆動電源装置としては、
残留熱除去運転用電源17と定電圧定周波数電源装置(以
下CVCF装置と略称する)18とを組合わせて、前記切
替スイッチ16の切替えにより電磁ポンプ13を低流量で一
定流量制御をする。As a drive power supply device for residual heat removal operation,
The residual heat removal operation power supply 17 and a constant voltage constant frequency power supply device (hereinafter abbreviated as CVCF device) 18 are combined to control the electromagnetic pump 13 at a low flow rate and a constant flow rate by switching the changeover switch 16.
【0015】図11の冷却材流量特性図は、流量曲線19で
示すように時刻t0 において通常運転用電源8の喪失が
発生し、原子炉を緊急停止した時の冷却材流量の変化を
示している。この時にはMGセット11に保有させた慣性
モーメントの大きさによって、時刻t0 から時刻t1 間
におけるコーストダウン時の流量逓減特性を適度に設定
することで、停止過渡時の冷却材温度変化を緩和する設
計としている。なお、時刻t1 以降は残留熱除去運転用
電源装置の残留熱除去運転用電源17とCVCF装置18に
よる一定流量の残留熱除去運転を実施する。The coolant flow rate characteristic diagram of FIG. 11 shows changes in the coolant flow rate when the reactor is urgently stopped due to the loss of the normal operation power supply 8 at time t0 as shown by the flow rate curve 19. There is. At this time, by designing the flow rate diminishing characteristics during coast down between time t0 and time t1 to be moderately set according to the magnitude of the moment of inertia held in the MG set 11, a design is made to mitigate the change in coolant temperature during stop transients. I am trying. After time t1, the residual heat removal operation power supply 17 of the residual heat removal operation power supply device and the residual heat removal operation of a constant flow rate by the CVCF device 18 are performed.
【0016】したがって、通常運転用駆動電源装置の電
源喪失等が発生して原子炉を緊急停止した場合には、コ
ーストダウン開始信号9によりコーストダウン開始用ス
イッチ10を開いて電磁ポンプ13をコーストダウンさせ
る。これにより、残留熱除去運転流量近傍まで冷却材流
量が減少した時に(図11に示す時刻t1 )、コーストダ
ウン引継信号15により通常運転、残留熱除去運転の切替
スイッチ16で、電磁ポンプ13の電源をMGセット11およ
びVVVF装置12からCVCF装置18に切替えて残留熱
除去運転に移行させている。Therefore, in the case where the power supply of the driving power source for normal operation is lost and the reactor is stopped urgently, the coast down start signal 9 is used to open the coast down start switch 10 to coast down the electromagnetic pump 13. Let As a result, when the coolant flow rate is reduced to near the residual heat removal operation flow rate (time t1 shown in FIG. 11), the coast down takeover signal 15 is used to change the power supply of the electromagnetic pump 13 by the switch 16 for normal operation and residual heat removal operation. Is switched from the MG set 11 and the VVVF device 12 to the CVCF device 18 to shift to the residual heat removal operation.
【0017】[0017]
【発明が解決しようとする課題】電磁ポンプ13の電源
で、特に通常運転用駆動電源装置のVVVF装置12は、
その応答性と制御性能に優れているが、主要構成素子に
はサイリスタ等の電力変換素子が用いられている。The power source of the electromagnetic pump 13, particularly the VVVF device 12 of the driving power source for normal operation,
Although its responsiveness and control performance are excellent, power conversion elements such as thyristors are used as the main constituent elements.
【0018】しかし、この電力変換素子の容量には限度
があり、このためVVVF装置12の容量はあまり大きく
することができず、この結果として原子炉出力が大きい
場合は、電磁ポンプも大型となることから、大容量電磁
ポンプの電源装置としての採用は困難であった。また、
VVVF装置12には特有の問題として、VVVF装置か
ら発生する高周波の影響により電源側電圧波形に歪を生
じさせ、プラントの電源の信頼性を低下させる不具合が
あった。However, since the capacity of this power conversion element is limited, the capacity of the VVVF device 12 cannot be increased so much. As a result, when the reactor output is large, the electromagnetic pump also becomes large. Therefore, it has been difficult to adopt the large-capacity electromagnetic pump as a power supply device. Also,
As a problem peculiar to the VVVF device 12, there is a problem that the voltage waveform on the power source side is distorted due to the influence of the high frequency generated from the VVVF device and the reliability of the power source of the plant is deteriorated.
【0019】したがって、従来の電磁ポンプの電源装置
としては、VVVF装置12の容量の限界により、原子炉
出力が大きい場合の大容量電磁ポンプの電源には容量不
足であり、また、VVVF装置12に伴う高調波電流の電
源系統への影響を低減させる必要があった。Therefore, as a power supply device for the conventional electromagnetic pump, due to the capacity limit of the VVVF device 12, the power supply of the large capacity electromagnetic pump when the reactor output is large is insufficient, and the VVVF device 12 is also insufficient. It was necessary to reduce the influence of the accompanying harmonic current on the power supply system.
【0020】さらに、通常運転用駆動電源装置の電源喪
失等によって原子炉を緊急停止した際に、残留熱除去運
転用駆動電源装置へ所定のコーストダウン特性で引継ぐ
ために、大きな慣性モーメントを保有したMGセット11
を設置している。Further, when the reactor is stopped in an emergency due to a loss of power of the drive power supply for normal operation, the MG having a large moment of inertia is carried over to the drive power supply for residual heat removal with a predetermined coast down characteristic. Set 11
Is installed.
【0021】しかし、このMGセット11のために、電磁
ポンプの電源装置の形状が全体的に大きなものとなり、
建屋内での配置に制約が生じるほか、建屋を小形化する
上で支障があった。However, because of this MG set 11, the shape of the power supply device of the electromagnetic pump becomes large as a whole,
In addition to restrictions on the layout within the building, there were obstacles to making the building smaller.
【0022】本発明の目的とするところは、使用する電
力変換素子の容量は変えずに、VVVF装置を多重また
は多相化して信頼性が高く大容量電磁ポンプへの適用可
能と高周波成分の電源側への影響の低減をすると共に、
これらVVVF装置に適合した大容量の電磁ポンプを得
る電磁ポンプ装置を提供することにある。The object of the present invention is to provide a highly reliable and high-capacity electromagnetic pump with a multi-phase or multi-phase VVVF device without changing the capacity of the power conversion element to be used, and a power supply for high frequency components. While reducing the impact on the side,
An object of the present invention is to provide an electromagnetic pump device that obtains a large-capacity electromagnetic pump suitable for these VVVF devices.
【0023】[0023]
【課題を解決するための手段】上記目的を達成するため
請求項1記載の発明に係る電磁ポンプ装置は、液体金属
を移送する冷却材ポンプにおいて、三相2巻線を有する
電磁ポンプと、この電磁ポンプの各巻線に対応して接続
した2台のVVVF手段でなるVVVF装置と、前記2
台のVVVF手段が同相にて協調運転する同一の制御信
号を出力する制御装置とからなることを特徴とする。In order to achieve the above object, an electromagnetic pump device according to the invention of claim 1 is a coolant pump for transferring a liquid metal, wherein the electromagnetic pump has a three-phase two-winding coil. A VVVF device comprising two VVVF means connected corresponding to each winding of the electromagnetic pump;
It is characterized in that the VVVF means of each unit is composed of a control device which outputs the same control signal for cooperative operation in the same phase.
【0024】請求項2記載の発明に係る電磁ポンプ装置
は、液体金属を移送する冷却材ポンプにおいて、三相2
巻線を有する電磁ポンプと、この電磁ポンプの各巻線に
対応して接続した2台のVVVF手段でなるVVVF装
置と、出力側にそれぞれ介挿した出力リアクトルと、前
記2台のVVVF手段の三相出力相互間の位相差を30度
として前記電磁ポンプが六相にて協調運転する制御信号
を出力する制御装置とからなることを特徴とする。An electromagnetic pump device according to a second aspect of the present invention is a coolant pump for transferring liquid metal, comprising a three-phase two-phase
A VVVF device comprising an electromagnetic pump having windings, two VVVF means connected corresponding to each winding of the electromagnetic pump, output reactors respectively inserted on the output side, and the two VVVF means. It is characterized in that the electromagnetic pump comprises a control device that outputs a control signal for coordinative operation in six phases with a phase difference between the phase outputs of 30 degrees.
【0025】請求項3記載の発明に係る電磁ポンプ装置
は、液体金属を移送する冷却材ポンプにおいて、三相1
巻線を有する電磁ポンプと、この電磁ポンプに接続した
電源装置が、2台のVVVF手段でなるVVVF装置
と、前記2台のVVVF手段を相間リアクトルで互いを
結合すると共に、前記2台のVVVF手段が同相での協
調運転と相互間の循環電流を抑制制御する制御装置とか
らなることを特徴とする。An electromagnetic pump device according to a third aspect of the present invention is a coolant pump for transferring liquid metal, comprising a three-phase one
An electromagnetic pump having windings, a power supply connected to the electromagnetic pump, a VVVF device composed of two VVVF means, the two VVVF means are coupled to each other by an interphase reactor, and the two VVVF means are connected. It is characterized in that the means comprises a cooperative operation in the same phase and a control device for suppressing and controlling the circulating current between them.
【0026】請求項4記載の発明に係る電磁ポンプ装置
は、液体金属を移送する冷却材ポンプにおいて、三相3
巻線を有する電磁ポンプと、この電磁ポンプの各巻線に
対応して接続した3台のVVVF手段でなるVVVF装
置と、前記3台のVVVF手段の各出力側に介挿した出
力リアクトルと、前記3台のVVVF手段の三相出力相
互間の位相差を20度として前記電磁ポンプが九相にて協
調運転する制御信号を出力する制御装置とからなること
を特徴とする。An electromagnetic pump device according to a fourth aspect of the present invention is a coolant pump for transferring a liquid metal, comprising a three-phase three-phase
An electromagnetic pump having windings, a VVVF device including three VVVF means connected to each winding of the electromagnetic pump, an output reactor inserted on each output side of the three VVVF means, and It is characterized in that the electromagnetic pump comprises a control device which outputs a control signal for performing a cooperative operation in nine phases with a phase difference between the three-phase outputs of the three VVVF means being 20 degrees.
【0027】請求項5記載の発明に係る電磁ポンプ装置
は、液体金属を移送する冷却材ポンプにおいて、三相2
巻線を有する電磁ポンプと、4台のVVVF手段でなる
VVVF装置と、前記4台のVVVF手段の各2台の出
力側を相間リアクトルにより結合して2組とし、この各
相間リアクトルから前記電磁ポンプの各巻線に対応して
それぞれ出力リアクトルを介して接続すると共に、前記
2組のVVVF手段の三相出力相互間の位相差を30度と
して前記電磁ポンプが六相にて協調運転する制御信号を
出力する制御装置とからなることを特徴とする。An electromagnetic pump device according to a fifth aspect of the present invention is a coolant pump for transferring a liquid metal, comprising a three-phase two-phase pump.
An electromagnetic pump having windings, a VVVF device composed of four VVVF means, and two output sides of each of the four VVVF means are coupled by an interphase reactor to form two sets. A control signal for connecting the respective windings of the pump through output reactors, and setting the phase difference between the three-phase outputs of the two sets of VVVF means to 30 degrees to cause the electromagnetic pump to operate in six phases in cooperation. And a control device for outputting.
【0028】請求項6記載の発明に係る電磁ポンプ装置
は、液体金属を移送する冷却材ポンプにおいて、大流量
運転用巻線および低流量運転用巻線を有する電磁ポンプ
と、電磁ポンプ起動時の電源である所内常用電源と、通
常運転時の電源であるタービン発電機軸に直結された専
用発電機と、この専用発電機出力と前記所内常用電源の
切替スイッチと、この切替スイッチと前記電磁ポンプの
大流量運転用巻線間に接続した大電流運転用VVVF装
置と、所内非常用電源と前記電磁ポンプの低流量運転用
巻線間に接続したCVCF装置と、電磁ポンプの大流量
運転停止時に前記大電流運転用VVVF装置を低流量運
転へ円滑に運転引継をする流量低下特性の制御をする制
御装置とからなることを特徴とする。An electromagnetic pump device according to a sixth aspect of the present invention is a coolant pump for transferring a liquid metal, wherein the electromagnetic pump has a large flow rate operation winding and a low flow rate operation winding, and an electromagnetic pump for starting the electromagnetic pump. In-house power source that is a power source, a dedicated generator that is directly connected to the turbine generator shaft that is a power source during normal operation, a switch for switching between this dedicated generator output and the in-station power source, and this switch and the electromagnetic pump. A large current operation VVVF device connected between the large flow operation windings, a CVCF device connected between the emergency power supply in the station and the low flow operation windings of the electromagnetic pump, and the above when the large flow operation of the electromagnetic pump is stopped It is characterized in that it comprises a control device for controlling the flow rate lowering characteristic for smoothly taking over the operation of the VVVF device for large current operation to the low flow rate operation.
【0029】請求項7記載の発明に係る電磁ポンプ装置
は、電磁ポンプの巻線に接続して電磁ポンプを駆動する
電源装置が、低電圧低周波スイッチングにより出力制御
が可能なマルチレベルインバータによるVVVF装置で
あることを特徴とする。According to a seventh aspect of the present invention, in an electromagnetic pump device, a power supply device for driving the electromagnetic pump by connecting to a winding of the electromagnetic pump is a VVVF by a multi-level inverter capable of output control by low voltage low frequency switching. It is a device.
【0030】[0030]
【作用】請求項1記載の発明は、制御装置からの同一の
制御信号により、VVVF装置である2台のVVVF手
段の出力を同相の三相に協調制御して、三相2巻線を備
えた電磁ポンプを運転する。これにより電磁ポンプの各
巻線の2倍の吐出流量が得られると共に、多重化により
信頼性が高い。According to the first aspect of the present invention, the outputs of the two VVVF means, which are VVVF devices, are cooperatively controlled to the same three phases by the same control signal from the controller, and three phase two windings are provided. The electromagnetic pump. As a result, a discharge flow rate twice that of each winding of the electromagnetic pump can be obtained, and the reliability is high due to the multiplexing.
【0031】請求項2記載の発明は、VVVF装置であ
る2台のVVVF手段を制御装置により多相化で協調制
御して相互間の位相差30度の三相電力を出力し、三相2
巻線を有する電磁ポンプの各巻線に供給して、この電磁
ポンプを六相にて運転する。これにより電磁ポンプの各
巻線の2倍で円滑な吐出流量が得られると共に、多重化
により信頼性が向上する。According to a second aspect of the present invention, two VVVF means, which are VVVF devices, are cooperatively controlled by the control device in a multi-phase manner to output three-phase electric power with a phase difference of 30 degrees, and a three-phase two-phase power is used.
Supplying to each winding of an electromagnetic pump having windings, this electromagnetic pump is operated in six phases. This makes it possible to obtain a smooth discharge flow rate which is twice that of each winding of the electromagnetic pump, and the reliability is improved by multiplexing.
【0032】請求項3記載の発明は、VVVF装置であ
る2台のVVVF手段を相間リアクトルで互いに結合し
て多重化し、制御装置にて相互間の循環電流を抑制する
と共に、三相の同相にて協調運転することにより、VV
VF装置はVVVF手段2台分の出力を得て、三相1巻
線を有する電磁ポンプを駆動できると共に、VVVF手
段の2重化により信頼性が高い。According to the third aspect of the present invention, two VVVF means, which are VVVF devices, are coupled and multiplexed by an interphase reactor, and a control device suppresses the circulating current between them, and at the same time, the three phases are in-phase. VV
The VF device can obtain the output of two VVVF means and drive an electromagnetic pump having three-phase one-winding, and is highly reliable due to the duplication of the VVVF means.
【0033】請求項4記載の発明は、VVVF装置であ
る3台のVVVF手段を制御装置により多相化で協調制
御して、出力リアクトルを介して各VVVF手段相互間
の位相差が20度の三相電力を出力し、三相3巻線を有す
る電磁ポンプの各巻線に供給して、この電磁ポンプを九
相にて運転する。これにより電磁ポンプの各巻線の3倍
で円滑な吐出流量が得られると共に、多重化により信頼
性が高い。According to a fourth aspect of the present invention, the three VVVF means, which are VVVF devices, are cooperatively controlled by the control device in a multi-phase manner, and the phase difference between the VVVF means is 20 degrees via the output reactor. Three-phase electric power is output and supplied to each winding of an electromagnetic pump having three-phase three windings, and this electromagnetic pump is operated in nine phases. This makes it possible to obtain a smooth discharge flow rate that is three times as large as that of each winding of the electromagnetic pump, and the reliability is high due to the multiplexing.
【0034】請求項5記載の発明は、VVVF装置であ
る4台のVVVF手段を各2台づつ相間リアクトルによ
り結合する。この多重化した2組を制御装置により多相
化で協調制御して相互間の位相差を30度の三相を出力
し、夫々出力リアクトルを介して電磁ポンプの各巻線に
供給して、この電磁ポンプを六相にて運転する。これに
よりVVVF手段の4倍の出力により電磁ポンプを円滑
に運転できると共に、多重化により信頼性が向上する。According to a fifth aspect of the present invention, four VVVF means, which are VVVF devices, are connected to each other by two interphase reactors. The two multiplexed sets are controlled in a coordinated manner by the control device in a multi-phase manner to output three phases with a phase difference of 30 degrees, and are supplied to each winding of the electromagnetic pump through the output reactors. Operate the electromagnetic pump in six phases. As a result, the electromagnetic pump can be operated smoothly by the output four times that of the VVVF means, and the reliability is improved by the multiplexing.
【0035】請求項6記載の発明は、プラント起動時に
は、切替スイッチを切替えて所内常用電源によりVVV
F装置を介して電磁ポンプの大流量運転用巻線により起
動と運転を行う。According to a sixth aspect of the present invention, when the plant is started, the changeover switch is changed over and VVV is supplied by the on-site utility power source.
Starting and operation is performed by the winding for large flow rate operation of the electromagnetic pump via the F device.
【0036】通常運転時は、切替スイッチを切替えてタ
ービン発電機軸に直結された専用発電機の電力によりV
VVF装置を介し、電磁ポンプの大流量運転時吐出流量
を原子炉出力に合わせて調整する。During normal operation, the changeover switch is switched to V by the electric power of the dedicated generator directly connected to the turbine generator shaft.
Through the VVF device, the discharge flow rate of the electromagnetic pump during large flow rate operation is adjusted according to the reactor output.
【0037】なお、通常運転時に外部電源喪失等が発生
して原子炉および発電機が緊急停止した場合には、ター
ビン発電機の慣性モーメントにより専用発電機の出力は
短時間確保されるので、流量低下特性を有する制御装置
によってVVVF装置の出力を降下させ、電磁ポンプの
吐出流量をコーストダウンさせて、残留熱除去運転の流
量近傍に制御する。When the reactor and the generator are stopped due to an external power loss during normal operation, the output of the dedicated generator is secured for a short time due to the moment of inertia of the turbine generator. The output of the VVVF device is lowered by the control device having the lowering characteristic, the discharge flow rate of the electromagnetic pump is coasted down, and control is performed in the vicinity of the flow rate of the residual heat removal operation.
【0038】低流量運転である残留熱除去運転時には、
残留熱除去運転用電源によりCVCF装置を介して低流
量運転用巻線に所定の一定電圧を供給し、電磁ポンプを
一定の低吐出流量で運転する。During the residual heat removal operation which is a low flow rate operation,
A predetermined constant voltage is supplied to the winding for low flow rate operation via the CVCF device by the residual heat removal operation power supply, and the electromagnetic pump is operated at a constant low discharge flow rate.
【0039】請求項7記載の発明は、マルチレベルイン
バータによるVVVF装置では、電磁ポンプに供給する
電力の電圧と周波数の制御が、低電圧で低周波スイッチ
ングにより可能なことから、高調波電流の発生が少な
く、したがって大容量の電磁ポンプの運転でも電源系統
に与える悪影響が少ない。According to the seventh aspect of the present invention, in the VVVF device using the multi-level inverter, since the voltage and frequency of the electric power supplied to the electromagnetic pump can be controlled by low-frequency switching at a low voltage, generation of harmonic current is generated. Therefore, even when a large-capacity electromagnetic pump is operated, the adverse effect on the power supply system is small.
【0040】[0040]
【実施例】本発明の一実施例を図面を参照して説明す
る。なお、上記した従来技術と同じ構成部分には同一符
号を付して詳細な説明を省略する。第1実施例は、図1
のブロック構成図に示すようにVVVF装置20が2台の
VVVF手段20aとVVVF手段20bにより2重化する
と共に、電磁ポンプ21についても、その巻線を巻線21a
と巻線21bの2巻線とし、前記VVVF装置20にはVV
VF手段20aとVVVF手段20bを制御する制御装置22
を設けて構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. It should be noted that the same components as those of the above-described conventional technique are designated by the same reference numerals, and detailed description thereof will be omitted. The first embodiment is shown in FIG.
As shown in the block diagram of FIG. 2, the VVVF device 20 is duplicated by two VVVF means 20a and VVVF means 20b, and the electromagnetic pump 21 also has its winding winding 21a.
And the winding 21b as two windings, and the VVVF device 20 has VV
Control device 22 for controlling VF means 20a and VVVF means 20b
Is provided and configured.
【0041】上記構成によれば、前記VVVF装置20に
おいては、VVVF手段20aとVVVF20手段bの2台
を制御装置22により同相の三相に協調制御して、VVV
F手段20aとVVVF手段20bのそれぞれを構成する電
力変換素子の容量は変えずに容量が2倍にできる。According to the above configuration, in the VVVF device 20, two VVVF means 20a and VVVF20 means b are cooperatively controlled by the control device 22 into the three phases of the same phase, and the VVV device is operated.
It is possible to double the capacity without changing the capacity of the power conversion elements forming the F means 20a and the VVVF means 20b.
【0042】また、電磁ポンプ21についても、前記VV
VF装置20のVVVF手段20aとVVVF手段20bよ
り、それぞれ別個に電力を供給される巻線21aと巻線21
bが2重化されていることから、2倍の出力を得るもの
で大容量化が容易に可能である。Also, regarding the electromagnetic pump 21, the VV
A winding 21a and a winding 21 which are separately supplied with power from the VVVF means 20a and the VVVF means 20b of the VF device 20.
Since b is doubled, a doubled output can be obtained and a large capacity can be easily achieved.
【0043】たとえ、前記VVVF装置20のVVVF手
段20a,20b、あるいは電磁ポンプ21の巻線21a,21b
を多重化したので、このうちの1つが故障しても、冷却
材の流量が零にはならないので原子炉運転の信頼性が高
い。For example, the VVVF means 20a, 20b of the VVVF device 20 or the windings 21a, 21b of the electromagnetic pump 21.
Because of this, the flow rate of the coolant does not become zero even if one of them fails, so the reliability of the reactor operation is high.
【0044】第2実施例は、図2のブロック構成図に示
すように、電磁ポンプ23は巻線23aと23bの2巻線を有
し、各々電気角30度の位相差を有している。さらに、V
VVF装置24は、2台のVVVF手段24aとVVVF手
段24bでなり、それぞれ対応する前記電磁ポンプ23の各
巻線23a,23bとは、出力リアクトル25aと出力リアク
トル25bを介して接続して多相構成すると共に、VVV
F装置24には、2台のVVVF手段24a,24bの三相出
力相互間の位相差を30度の多相化して協調制御する制御
装置26を接続して構成する。In the second embodiment, as shown in the block diagram of FIG. 2, the electromagnetic pump 23 has two windings, that is, windings 23a and 23b, and each has a phase difference of an electrical angle of 30 degrees. . Furthermore, V
The VVF device 24 is composed of two VVVF means 24a and VVVF means 24b, and the respective windings 23a and 23b of the corresponding electromagnetic pump 23 are connected via an output reactor 25a and an output reactor 25b to form a multi-phase configuration. And VVV
The F device 24 is configured by connecting a control device 26 for controlling the three-phase outputs of the two VVVF means 24a, 24b to have a phase difference of 30 degrees for cooperative control.
【0045】上記構成による作用としては、VVVF装
置24はVVVF手段24aとVVVF手段24bのそれぞれ
を構成する電力変換素子の容量は変えずに、電気角30度
の位相差を持つ2倍の大容量化が可能となる。The operation of the above structure is that the VVVF device 24 does not change the capacities of the power conversion elements constituting the VVVF means 24a and the VVVF means 24b, but has a double capacity having a phase difference of 30 degrees in electrical angle. Can be realized.
【0046】また、電磁ポンプ23については、2つの巻
線23a,23bが、それぞれ別個のVVVF手段24a,24
bから電気角30度の位相差を持つ電力が供給され、六相
の多相にて協調運転されるので、2倍の大容量で円滑な
吐出流が得られ、かつ、VVVF装置24および電磁ポン
プ23の2重化により信頼性が向上する。Further, in the electromagnetic pump 23, the two windings 23a and 23b have separate VVVF means 24a and 24, respectively.
Since electric power having a phase difference of 30 degrees in electrical angle is supplied from b and coordinated operation is performed in the 6-phase polyphase, a smooth discharge flow with a double capacity can be obtained, and the VVVF device 24 and electromagnetic The duplication of the pump 23 improves the reliability.
【0047】第3実施例は、図3のブロック構成図に示
すように、三相巻線13aを備えた電磁ポンプ13に接続し
た電源装置のVVVF装置27は、コンバータ28aとイン
バータ29aでなるVVVF手段27aと、コンバータ28b
とインバータ29bからなるVVVF手段27bの2台で多
重化され、さらに、このVVVF手段27aとVVVF手
段27bは互いに相間リアクトル30a,30bで結合されて
いる。In the third embodiment, as shown in the block diagram of FIG. 3, a VVVF device 27 of a power supply device connected to an electromagnetic pump 13 having a three-phase winding 13a is a VVVF device composed of a converter 28a and an inverter 29a. Means 27a and converter 28b
And VVVF means 27b composed of an inverter 29b are multiplexed, and the VVVF means 27a and VVVF means 27b are connected to each other by interphase reactors 30a and 30b.
【0048】また、VVVF装置27には、前記2台のV
VVF手段27aとVVVF手段27bを協調制御して同相
の三相電力を出力させる制御装置31を接続して構成され
ている。Further, the VVVF device 27 has two V
It is configured by connecting a control device 31 for cooperatively controlling the VVF means 27a and the VVVF means 27b and outputting three-phase electric power of the same phase.
【0049】上記構成による作用としては、制御装置31
による制御でVVVF装置27においては、2台のVVV
F手段27a,27bが同相の三相にて協調運転し、かつ、
相間リアクトル30a,30bにより、前記VVVF手段27
a,27b間の循環電流は抑制される。The operation of the above configuration is as follows:
With the control by the VVVF device 27, two VVV
The F means 27a and 27b operate cooperatively in the same three phases, and
By the interphase reactors 30a and 30b, the VVVF means 27
The circulating current between a and 27b is suppressed.
【0050】これによりVVVF装置27は、VVVF手
段27a,27bのそれぞれを構成する電力変換素子の容量
は変えずに、2倍の大容量化ができると共に、VVVF
装置27が2重化されていることから信頼性が向上する。As a result, the VVVF device 27 can double the capacity without changing the capacity of the power conversion elements forming the VVVF means 27a and 27b, and the VVVF device 27 can be used.
Reliability is improved because the device 27 is duplicated.
【0051】第4実施例は、図4のブロック構成図に示
すように、VVVF装置32は、3台のVVVF手段32
a,VVVF手段32b,VVVF手段32cにより3重化
すると共に、それぞれVVVF手段32a〜32cの三相出
力で相互間の位相差を20度とした多相化された電力を出
力する。In the fourth embodiment, as shown in the block diagram of FIG. 4, the VVVF device 32 includes three VVVF means 32.
a, VVVF means 32b and VVVF means 32c are tripled, and three-phase outputs of the VVVF means 32a to 32c respectively output multi-phased electric power having a phase difference of 20 degrees.
【0052】この各VVVF手段32a〜32cには、電磁
ポンプ33の3巻線33a〜33cのそれぞれに対応して各出
力リアクトル34a〜34cが接続されている。また、前記
電磁ポンプ33における3つの巻線33a〜33cは、各々が
電気角20度の位相差を有していて、さらに、前記VVV
F装置32には、VVVF手段32a〜32cを協調制御する
制御装置35が接続されて構成している。Output reactors 34a to 34c are connected to the respective VVVF means 32a to 32c in correspondence with the three windings 33a to 33c of the electromagnetic pump 33. The three windings 33a to 33c in the electromagnetic pump 33 each have a phase difference of an electrical angle of 20 degrees.
To the F device 32, a control device 35 for cooperatively controlling the VVVF means 32a to 32c is connected and configured.
【0053】上記構成による作用として、VVVF装置
32においては、制御装置35により各VVVF手段32a〜
32cの運転が協調制御されて、それぞれ三相出力で相互
間の位相差が20度の多相化された電力が得られて、VV
VF手段32a〜32cを構成する電力変換素子の容量は変
えずに3倍の大容量化が可能となる。The operation of the above structure is as follows:
In 32, each VVVF means 32a ...
The operation of 32c is controlled cooperatively, and the multi-phase electric power with the phase difference of 20 degrees is obtained with the three-phase output, and the VV is obtained.
It is possible to increase the capacity three times without changing the capacity of the power conversion elements forming the VF means 32a to 32c.
【0054】VVVF手段32a〜32cからの電力は、そ
れぞれ対応する電磁ポンプ33の巻線の巻線33a〜33cに
供給されて、これにより電磁ポンプ33は、九相の多相に
て協調運転され、3倍の大容量で円滑な吐出流が得られ
ると共に、VVVF装置32および電磁ポンプ33の多重化
により信頼性が大きく向上する。The electric power from the VVVF means 32a to 32c is supplied to the windings 33a to 33c of the corresponding windings of the electromagnetic pump 33, whereby the electromagnetic pump 33 is operated cooperatively in nine phases. A smooth discharge flow can be obtained with a triple capacity, and the reliability is greatly improved by multiplexing the VVVF device 32 and the electromagnetic pump 33.
【0055】第5実施例は、図5のブロック構成図に示
すように、VVVF装置36は2台のVVVF手段37a,
37bによるVVVF手段36aと、VVVF手段37c,37
dによるVVVF手段36bにより2重化したものの2組
からなり、この2重化したVVVF手段の出力相互間を
各々相間リアクトル38a,38bで結合し、さらに出力リ
アクトル39a,39bを介して各三相出力を得ている。In the fifth embodiment, as shown in the block diagram of FIG. 5, the VVVF device 36 includes two VVVF means 37a,
VVVF means 36a by 37b and VVVF means 37c, 37
It is composed of two sets which are duplicated by the VVVF means 36b by d, and the outputs of the duplicated VVVF means are coupled by interphase reactors 38a and 38b, respectively, and further three phases are respectively provided via output reactors 39a and 39b. You are getting the output.
【0056】また、電磁ポンプ40には2つの巻線40a,
40bを備え、さらに前記VVVF装置36には、2重化さ
れた2組のVVVF37a〜37dを多相化した六相にて協
調制御をする制御装置41を接続して構成している。The electromagnetic pump 40 has two windings 40a,
The VVVF device 36 is provided with a control device 41 for performing coordinated control in a six-phase configuration in which two sets of duplicated VVVFs 37a to 37d are connected to the VVVF device 36.
【0057】上記構成によれば、VVVF装置36が4台
のVVVF手段37a〜37dを2重化し、かつ2組で多相
化しているので、前記VVVF手段37a〜37dを構成す
る電力変換素子の容量は変えずに4倍の大容量化が可能
となる。According to the above construction, since the VVVF device 36 has the four VVVF means 37a to 37d doubled and has two sets of polyphases, the power conversion elements constituting the VVVF means 37a to 37d are It is possible to increase the capacity four times without changing the capacity.
【0058】また、電磁ポンプ40についても、2つの巻
線40a,40bにより六相の多相にて協調運転されるの
で、大容量で円滑な吐出流が得られると共に、VVVF
装置37および電磁ポンプ40の多重化により信頼性が大幅
に向上する。Further, the electromagnetic pump 40 is also operated in a coordinated manner by the two windings 40a and 40b in the six-phase multi-phase, so that a large capacity and a smooth discharge flow can be obtained, and the VVVF can be obtained.
The reliability is greatly improved by the multiplexing of the device 37 and the electromagnetic pump 40.
【0059】第6実施例は、図6のブロック構成図に示
すように、電磁ポンプ42は、大流量運転用巻線42aと、
低流量運転用巻線である残留熱除去運転用巻線42bの2
巻線を備えている。この大流量運転用巻線42aへは、制
御装置43で制御される流量調整運転の可能なマルチレベ
ルインバータを採用したVVVF装置44より電力が供給
される。In the sixth embodiment, as shown in the block diagram of FIG. 6, the electromagnetic pump 42 includes a large flow rate operation winding 42a,
Winding 42b for residual heat removal operation, which is a winding for low flow rate operation, 2b
Equipped with winding. Electric power is supplied to the winding 42a for large flow rate operation from the VVVF apparatus 44 which employs a multi-level inverter capable of flow rate adjustment operation controlled by the control apparatus 43.
【0060】さらに、このVVVF装置44の電源として
は、起動時のための所内常用電源45と、コーストダウン
用としてタービン発電機46の軸に直結された専用発電機
47が出力する電力とが、切替スイッチ48にて切替えられ
て供給される。Further, as a power source of the VVVF device 44, a regular power source 45 for starting the plant and a dedicated generator directly connected to the shaft of the turbine generator 46 for coast down are used.
The electric power output by 47 is switched by the changeover switch 48 and supplied.
【0061】低流量運転用巻線である残留熱除去運転用
巻線42bには、残留熱除去運転用電源17からCVCF装
置49を介して給電され、低流量で一定流量制御をするよ
うに構成している。The residual heat removal operation winding 42b, which is a low flow rate operation winding, is supplied with power from the residual heat removal operation power supply 17 through the CVCF device 49, and is configured to perform constant flow rate control at a low flow rate. are doing.
【0062】図7の回路図は、前記VVVF装置44にお
けるマルチレベルインバータの一例でNPCインバータ
の構成を示す。直流電源はフィルタコンデンサ50で2分
圧され、中点0が電圧クランプ用ダイオード51を通し
て、直列接続された各アームの2個のGTO素子52の中
間に接続されている。The circuit diagram of FIG. 7 shows the configuration of an NPC inverter as an example of the multilevel inverter in the VVVF device 44. The DC power supply is divided into two by the filter capacitor 50, and the midpoint 0 is connected to the middle of the two GTO elements 52 of each arm connected in series through the voltage clamping diode 51.
【0063】したがって、このGTO素子52には、直流
電源の線間電圧の半分のコンデンサ電圧しか印加されな
い。したがって、GTO素子52の耐圧を1/2としてV
VVF装置を小形化することや、GTO素子52の耐圧を
変えずに直流電源の線間電圧を2倍として、VVVF装
置の大きさを変えずに容量を増大することが容易にでき
る。Therefore, to the GTO element 52, only half the capacitor voltage of the line voltage of the DC power source is applied. Therefore, the breakdown voltage of the GTO element 52 is halved to V
It is possible to easily downsize the VVF device or increase the capacity without changing the size of the VVVF device by doubling the line voltage of the DC power supply without changing the breakdown voltage of the GTO element 52.
【0064】また、このNPCインバータの出力電圧
は、図8の出力電圧波形特性図に示すように、1相当り
+1,0,−1の3レベルであり、線間電圧Vが例えば
u−v間では、+2,+1,0,−1,−2の5段階波
形が得られる。The output voltage of the NPC inverter has three levels corresponding to 1, +1, 0, -1, as shown in the output voltage waveform characteristic diagram of FIG. 8, and the line voltage V is, for example, u-v. In between, a 5-step waveform of +2, +1, 0, -1, and -2 is obtained.
【0065】したがって、このNPCインバータと同一
回路のNPCコンバータを電源側に用いれば、NPCコ
ンバータによる商用周波から直流電力へ、さらにNPC
インバータによる直流電力から可変周波の交流電力へそ
れぞれ変換して、低電圧で低周波のスイッチングによる
マルチレベルインバータが形成できるので、このNPC
のマルチレベルインバータによるVVVF装置からは高
周波分は発生せず、したがって電源系統に悪影響を与え
る高調波電流が少ない。Therefore, if an NPC converter having the same circuit as this NPC inverter is used on the power supply side, the commercial frequency is converted to DC power by the NPC converter, and further NPC is used.
Since the DC power from the inverter is converted into the variable frequency AC power respectively, a multi-level inverter can be formed by low voltage and low frequency switching.
No high-frequency component is generated from the VVVF device using the multi-level inverter, and therefore the harmonic current that adversely affects the power supply system is small.
【0066】次に、上記構成による作用について説明す
る。電磁ポンプ42の起動運転時は、所内常用電源45より
切替スイッチ48とVVVF装置44を介し、電磁ポンプ42
の大流量運転用巻線42aに電力を供給して起動と制御装
置43により流量制御を行なう。Next, the operation of the above configuration will be described. During startup operation of the electromagnetic pump 42, the electromagnetic pump 42 is switched from the station power supply 45 via the changeover switch 48 and the VVVF device 44.
The electric power is supplied to the large flow rate operation winding 42a, and the flow rate is controlled by the start-up and control device 43.
【0067】原子炉が運転されてタービン発電機46が起
動した後には、電磁ポンプ42も大流量運転を行うが、こ
の時には切替スイッチ48を専用発電機47側に切替えて、
タービン発電機46と直結された専用発電機47の出力電力
を、VVVF装置44を介して電磁ポンプ42の大流量運転
用巻線42aに給電する。この際、制御装置43によりVV
VF装置44の出力電圧を原子炉出力に合わせて変化さ
せ、電磁ポンプ42のすべりを制御して冷却材流量を広範
囲に調整する。After the nuclear reactor is operated and the turbine generator 46 is started, the electromagnetic pump 42 also performs a large flow rate operation. At this time, the changeover switch 48 is switched to the dedicated generator 47 side,
The output power of the dedicated generator 47 directly connected to the turbine generator 46 is supplied to the large flow operation winding 42a of the electromagnetic pump 42 via the VVVF device 44. At this time, VV is controlled by the control device 43.
The output voltage of the VF device 44 is changed according to the reactor output, and the slip of the electromagnetic pump 42 is controlled to adjust the coolant flow rate in a wide range.
【0068】残留熱除去運転時には、電磁ポンプ42の大
流量運転用巻線42aへの給電を停止し、残留熱除去運転
用電源17からCVCF装置49を介して、定電圧定周波数
の電力を低流量運転用巻線である残留熱除去運転用巻線
42bに供給して、電磁ポンプ42を低流量の一定流量で運
転する。During the residual heat removal operation, the power supply to the large flow operation winding 42a of the electromagnetic pump 42 is stopped, and the constant voltage constant frequency power is reduced from the residual heat removal operation power supply 17 through the CVCF device 49. Winding for residual heat removal operation which is winding for flow rate operation
42b, and the electromagnetic pump 42 is operated at a constant low flow rate.
【0069】さらに、原子炉またはタービン発電機46の
運転中に、外部電源喪失等が発生して緊急停止をした場
合には、タービン発電機46の停止に至るまでの慣性モー
メントにより専用発電機47から出力される電力をVVV
F装置44に対して給電し、上記図11に示すコーストダウ
ン時の流量を確保するような流量低下特性を制御装置43
によってVVVF装置44の出力電圧を制御しながら、電
磁ポンプ42をコーストダウン運転させる。Furthermore, when an external power loss or the like occurs and an emergency stop occurs during operation of the reactor or the turbine generator 46, the dedicated generator 47 due to the moment of inertia until the turbine generator 46 is stopped. The electric power output from VVV
Power is supplied to the F device 44, and the control device 43 has a flow rate lowering characteristic that secures the flow rate during coast down shown in FIG.
The electromagnetic pump 42 is made to coast down while controlling the output voltage of the VVVF device 44 by.
【0070】この後に、残留熱除去運転時流量の近傍ま
で冷却材流量が減少した時点で、前記CVCF装置49に
より電磁ポンプ42を残留熱除去運転に円滑に移行する。
また、大流量運転用のVVVF装置44をNPCのマルチ
レベルインバータを採用したことにより、電源系統へ高
調波による悪影響を与えない。After this, when the coolant flow rate is reduced to near the residual heat removal operation flow rate, the CVCF device 49 causes the electromagnetic pump 42 to smoothly shift to the residual heat removal operation.
Further, by adopting the multi-level inverter of NPC as the VVVF device 44 for large flow rate operation, the power supply system is not adversely affected by harmonics.
【0071】本発明では、VVVF装置を多重化または
多相化して構成することにより、大容量の電力変換素子
を使用せずに電源容量を大容量化を達成することができ
る。なお、多重化においては各VVVF手段を同相にて
運転することによりVVVF手段の出力の重ね合わせに
よる容量を倍増することができる。According to the present invention, the VVVF device is configured in a multiplexed or multi-phase configuration, so that the power source capacity can be increased without using a large capacity power conversion element. In addition, in multiplexing, by operating each VVVF means in the same phase, it is possible to double the capacity by superimposing the outputs of the VVVF means.
【0072】また、VVVF装置を複数台のVVVF手
段を用いて多相化(六相,九相)する場合には、電磁ポ
ンプもこれに対応して多相化し、VVVF手段の三相出
力相互間の位相差を六相は30度,九相は20度と相数に応
じて協調運転させれば良く、この多相化により容量の倍
増と共に、冷却材の円滑な吐出流が得られる。When the VVVF device is made multi-phase (six-phase, nine-phase) by using a plurality of VVVF means, the electromagnetic pump is also made multi-phase correspondingly, and the three-phase output mutual of the VVVF means. The phase difference between the six phases is 30 degrees, and the nine phases are 20 degrees, so that they can be operated cooperatively according to the number of phases. This multi-phase operation doubles the capacity and provides a smooth discharge flow of the coolant.
【0073】さらに、多重化あるいは多相化により、V
VVF装置および電磁ポンプも多重化することとから、
その一部が故障しても全機能が停止することがなく、信
頼性が向上する。Further, by multiplexing or multi-phase, V
Since the VVF device and the electromagnetic pump are also multiplexed,
Even if a part of it fails, all functions do not stop, and reliability is improved.
【0074】[0074]
【発明の効果】以上本発明によれば、電磁ポンプの電源
装置とするVVVFが、採用する電力変換素子の大巾な
容量増を必要とせずに大容量化が可能となる。また、タ
ービン発電機の慣性モーメントを利用したコーストダウ
ン運転により、通常運転から残留熱除去運転へ円滑に移
行できると共に、MGセットが不要となり設備が簡素化
されて建屋が小形化される。As described above, according to the present invention, it is possible to increase the capacity of the VVVF used as the power supply device of the electromagnetic pump without requiring a large increase in the capacity of the power conversion element adopted. Further, the coast down operation using the moment of inertia of the turbine generator can smoothly shift from the normal operation to the residual heat removal operation, and the MG set is not required, so that the facility is simplified and the building is downsized.
【0075】さらに、VVVF装置の大容量化に伴う高
調波電流のプラント電源への影響についても、マルチレ
ベルインバータの採用により低電圧,低周波のスイッチ
ングにより高周波による電源系統への悪影響が低減され
る。なお、VVVF装置および電磁ポンプの多重化によ
り冷却材移送の機能と、原子炉運転の信頼性も向上する
効果がある。Further, regarding the influence of the harmonic current on the plant power supply due to the increase in the capacity of the VVVF device, the adverse effect on the power supply system due to the high frequency due to the switching of the low voltage and the low frequency is reduced by the adoption of the multi-level inverter. . It should be noted that the VVVF device and the electromagnetic pump are multiplexed so that the function of transferring the coolant and the reliability of the reactor operation can be improved.
【図1】本発明に係る第1実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 1 is a block configuration diagram of an electromagnetic pump device according to a first embodiment of the present invention.
【図2】本発明に係る第2実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 2 is a block configuration diagram of an electromagnetic pump device according to a second embodiment of the present invention.
【図3】本発明に係る第3実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 3 is a block configuration diagram of an electromagnetic pump device according to a third embodiment of the present invention.
【図4】本発明に係る第4実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 4 is a block configuration diagram of an electromagnetic pump device according to a fourth embodiment of the present invention.
【図5】本発明に係る第5実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 5 is a block configuration diagram of an electromagnetic pump device according to a fifth embodiment of the present invention.
【図6】本発明に係る第6実施例の電磁ポンプ装置のブ
ロック構成図。FIG. 6 is a block configuration diagram of an electromagnetic pump device according to a sixth embodiment of the present invention.
【図7】本発明に係る一実施例のNPCインバータの結
線図。FIG. 7 is a wiring diagram of an NPC inverter according to an embodiment of the present invention.
【図8】本発明に係るNPCインバータの出力電圧波形
特性図。FIG. 8 is an output voltage waveform characteristic diagram of the NPC inverter according to the present invention.
【図9】液体金属冷却型高速増殖炉の概略系統図。FIG. 9 is a schematic system diagram of a liquid metal cooled fast breeder reactor.
【図10】従来の電磁ポンプ装置のブロック構成図。FIG. 10 is a block configuration diagram of a conventional electromagnetic pump device.
【図11】コーストダウン時の冷却材流量特性図。FIG. 11 is a coolant flow rate characteristic chart during coast down.
1…原子炉炉心、2…一次冷却材ポンプ、3…一次冷却
系、4…中間熱交換器、5…二次冷却系、6…二次冷却
材ポンプ、7…蒸気発生器、8…通常運転用電源、9…
コーストダウン開始信号、10…コーストダウン開始用ス
イッチ、11…MGセット、11a…誘導電動機、11b…フ
ライホイール、11c…同期発電機、12,20,24,27,3
2,36,44…VVVF装置、13,21,23,33,40,42…
電磁ポンプ、13a,21a,21b,23a,23b,33a〜33
c,40a,40b…巻線、14…発電機調整装置、15…コー
ストダウン引継信号、16,48…切替スイッチ、17…残留
熱除去運転用電源、18,49…CVCF、19…流量曲線、
20a,20b,24a,24b,27a,27b,32a〜32c,36
a,36b,37a〜37d…VVVF手段、22,26,31,3
5,41,43…制御装置、25a,25b,34a〜34c,39
a,39b…出力リアクトル、28a,28b…コンバータ、
29a,29b…インバータ、30a,30b,38a,38b…相
間リアクトル、42a…大流量運転用巻線、42b…残留熱
除去運転用巻線、45…所内常用電源、46…タービン発電
機、47…専用発電機、50…フィルタコンデンサ、51…電
圧クランプ用ダイオード、52…GTO素子。1 ... Reactor core, 2 ... Primary coolant pump, 3 ... Primary cooling system, 4 ... Intermediate heat exchanger, 5 ... Secondary cooling system, 6 ... Secondary coolant pump, 7 ... Steam generator, 8 ... Normal Power supply for operation, 9 ...
Coast down start signal, 10 ... Coast down start switch, 11 ... MG set, 11a ... Induction motor, 11b ... Flywheel, 11c ... Synchronous generator, 12, 20, 24, 27, 3
2, 36, 44 ... VVVF device, 13, 21, 23, 33, 40, 42 ...
Electromagnetic pump, 13a, 21a, 21b, 23a, 23b, 33a-33
c, 40a, 40b ... Winding, 14 ... Generator adjusting device, 15 ... Coast down takeover signal, 16, 48 ... Changeover switch, 17 ... Residual heat removal operation power source, 18, 49 ... CVCF, 19 ... Flow rate curve,
20a, 20b, 24a, 24b, 27a, 27b, 32a to 32c, 36
a, 36b, 37a to 37d ... VVVF means, 22, 26, 31, 3
5, 41, 43 ... Control device, 25a, 25b, 34a to 34c, 39
a, 39b ... Output reactor, 28a, 28b ... Converter,
29a, 29b ... Inverter, 30a, 30b, 38a, 38b ... Interphase reactor, 42a ... Winding for large flow operation, 42b ... Winding for residual heat removal operation, 45 ... Stationary power supply, 46 ... Turbine generator, 47 ... Dedicated generator, 50 ... Filter capacitor, 51 ... Voltage clamp diode, 52 ... GTO element.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中島 茂 神奈川県横浜市磯子区新杉田町8番地 株 式会社東芝横浜事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Nakajima 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Stock Company Toshiba Yokohama Office
Claims (7)
て、三相2巻線を有する電磁ポンプと、この電磁ポンプ
の各巻線に対応して接続した2台の可変電圧可変周波数
電源手段でなる可変電圧可変周波数電源装置と、前記2
台の可変電圧可変周波数電源手段が同相にて協調運転す
る同一の制御信号を出力する制御装置とからなることを
特徴とする電磁ポンプ装置。1. A coolant pump for transferring a liquid metal, comprising a variable pump comprising a three-phase two-winding electromagnetic pump and two variable-voltage variable-frequency power supply means connected corresponding to each winding of the electromagnetic pump. Voltage variable frequency power supply device, and 2
An electromagnetic pump device comprising: a variable voltage variable frequency power supply means of a stand and a control device that outputs the same control signal for cooperating in-phase.
て、三相2巻線を有する電磁ポンプと、この電磁ポンプ
の各巻線に対応して接続した2台の可変電圧可変周波数
電源手段でなる可変電圧可変周波数電源装置と、出力側
にそれぞれ介挿した出力リアクトルと、前記2台の可変
電圧可変周波数電源手段の三相出力相互間の位相差を30
度として前記電磁ポンプが六相にて協調運転する制御信
号を出力する制御装置とからなることを特徴とする電磁
ポンプ装置。2. A coolant pump for transporting liquid metal, comprising a variable pump comprising a three-phase two-winding electromagnetic pump and two variable voltage variable frequency power supply means connected corresponding to each winding of the electromagnetic pump. The voltage variable frequency power supply device, the output reactors respectively inserted on the output side, and the phase difference between the three phase outputs of the two variable voltage variable frequency power supply means are set to 30.
An electromagnetic pump device comprising: a control device that outputs a control signal for the electromagnetic pump to operate cooperatively in six phases.
て、三相1巻線を有する電磁ポンプと、この電磁ポンプ
に接続した電源装置が、2台の可変電圧可変周波数電源
手段でなる可変電圧可変周波数電源装置と、前記2台の
可変電圧可変周波数電源手段を相間リアクトルで互いを
結合すると共に、前記2台の可変電圧可変周波数電源手
段が同相での協調運転と相互間の循環電流を抑制制御す
る制御装置とからなることを特徴とする電磁ポンプ装
置。3. A coolant pump for transporting liquid metal, wherein an electromagnetic pump having three-phase one-winding and a power supply device connected to the electromagnetic pump are two variable voltage variable frequency power supply means, and a variable voltage variable power supply means is provided. The frequency power supply device and the two variable voltage variable frequency power supply means are coupled to each other by an interphase reactor, and the two variable voltage variable frequency power supply means control the cooperative operation in the same phase and the circulating current between them. An electromagnetic pump device comprising:
て、三相3巻線を有する電磁ポンプと、この電磁ポンプ
の各巻線に対応して接続した3台の可変電圧可変周波数
電源手段でなる可変電圧可変周波数電源装置と、前記3
台の可変電圧可変周波数電源手段の各出力側に介挿した
出力リアクトルと、前記3台の可変電圧可変周波数電源
手段の三相出力相互間の位相差を20度として前記電磁ポ
ンプが九相にて協調運転する制御信号を出力する制御装
置とからなることを特徴とする電磁ポンプ装置。4. A coolant pump for transferring liquid metal, comprising a variable pump comprising an electromagnetic pump having three-phase and three windings and three variable voltage variable frequency power supply means connected corresponding to each winding of the electromagnetic pump. Voltage variable frequency power supply device, and 3
The electromagnetic pump has nine phases with a phase difference of 20 degrees between the output reactors inserted on the respective output sides of the variable voltage variable frequency power source means of the three sets and the three-phase outputs of the three variable voltage variable frequency power source means. And a control device that outputs a control signal for cooperative operation.
て、三相2巻線を有する電磁ポンプと、4台の可変電圧
可変周波数電源手段でなる可変電圧可変周波数電源装置
と、前記4台の可変電圧可変周波数電源手段の各2台の
出力側を相間リアクトルにより結合して2組とし、この
各相間リアクトルから前記電磁ポンプの各巻線に対応し
てそれぞれ出力リアクトルを介して接続すると共に、前
記2組の可変電圧可変周波数電源手段の三相出力相互間
の位相差を30度として前記電磁ポンプが六相にて協調運
転する制御信号を出力する制御装置とからなることを特
徴とする電磁ポンプ装置。5. A coolant pump for transporting liquid metal, comprising: an electromagnetic pump having three-phase two-windings; a variable voltage variable frequency power supply device comprising four variable voltage variable frequency power supply means; and four variable pumps. Each of the two output sides of the voltage variable frequency power supply means is coupled by an interphase reactor to form two sets, and the interphase reactors are connected through output reactors corresponding to the windings of the electromagnetic pump. An electromagnetic pump device comprising: a control device that outputs a control signal for the cooperative operation of the electromagnetic pump in six phases, with the phase difference between the three-phase outputs of the pair of variable voltage variable frequency power supply means being 30 degrees. .
て、大流量運転用巻線および低流量運転用巻線を有する
電磁ポンプと、電磁ポンプ起動時の電源である所内常用
電源と、通常運転時の電源であるタービン発電機軸に直
結された専用発電機と、この専用発電機出力と前記所内
常用電源の切替スイッチと、この切替スイッチと前記電
磁ポンプの大流量運転用巻線間に接続した大電流運転用
可変電圧可変周波数電源装置と、所内非常用電源と前記
電磁ポンプの低流量運転用巻線間に接続した定電圧定周
波数電源装置と、電磁ポンプの大流量運転停止時に前記
大電流運転用可変電圧可変周波数電源装置を低流量運転
へ円滑に運転引継をする流量低下特性の制御をする制御
装置とからなることを特徴とする電磁ポンプ装置。6. A coolant pump for transferring a liquid metal, comprising: an electromagnetic pump having a winding wire for large flow rate operation and a winding wire for low flow rate operation; a station power supply for starting the electromagnetic pump; The dedicated generator that is directly connected to the turbine generator shaft that is the power source of the power source, the changeover switch between the output of this dedicated generator and the in-station regular power source, and the large-scale operation connected between this changeover switch and the large flow operation winding of the electromagnetic pump. Variable-voltage variable-frequency power supply for current operation, constant-voltage constant-frequency power supply connected between the emergency power supply in the plant and the winding for low-flow operation of the electromagnetic pump, and the large-current operation when the large-flow operation of the electromagnetic pump is stopped An electromagnetic pump device comprising: a variable voltage variable frequency power supply device for control, and a control device for controlling a flow rate lowering characteristic for smoothly taking over the operation to a low flow rate operation.
を駆動する電源装置が、低電圧低周波スイッチングによ
り出力制御が可能なマルチレベルインバータによる可変
電圧可変周波数電源装置であることを特徴とする請求項
1乃至請求項6記載の電磁ポンプ装置。7. The power supply device for driving the electromagnetic pump by connecting to a winding of the electromagnetic pump is a variable voltage variable frequency power supply device by a multi-level inverter capable of output control by low voltage low frequency switching. The electromagnetic pump device according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17545394A JP3697273B2 (en) | 1994-07-27 | 1994-07-27 | Electromagnetic pump device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17545394A JP3697273B2 (en) | 1994-07-27 | 1994-07-27 | Electromagnetic pump device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0835483A true JPH0835483A (en) | 1996-02-06 |
JP3697273B2 JP3697273B2 (en) | 2005-09-21 |
Family
ID=15996342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17545394A Expired - Fee Related JP3697273B2 (en) | 1994-07-27 | 1994-07-27 | Electromagnetic pump device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3697273B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102612446A (en) * | 2009-09-24 | 2012-07-25 | 罗伯特·博世有限公司 | Inverter for an electric machine and method for operating an inverter for an electric machine |
CN104806507A (en) * | 2015-05-04 | 2015-07-29 | 中国市政工程西北设计研究院有限公司 | Electronic control system of water pump test board with two kinds of high voltage power supplies of 6 kV and 10 kV |
JP2018524778A (en) * | 2015-07-06 | 2018-08-30 | ロッテ ケミカル コーポレーション | Redox flow battery |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11798697B2 (en) * | 2020-08-17 | 2023-10-24 | Terrapower, Llc | Passive heat removal system for nuclear reactors |
-
1994
- 1994-07-27 JP JP17545394A patent/JP3697273B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102612446A (en) * | 2009-09-24 | 2012-07-25 | 罗伯特·博世有限公司 | Inverter for an electric machine and method for operating an inverter for an electric machine |
JP2013506390A (en) * | 2009-09-24 | 2013-02-21 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Inverter for electric machine and method of operating inverter for electric machine |
US9676277B2 (en) | 2009-09-24 | 2017-06-13 | Robert Bosch Gmbh | Inverter for an electric machine and method for operating an inverter for an electric machine |
CN104806507A (en) * | 2015-05-04 | 2015-07-29 | 中国市政工程西北设计研究院有限公司 | Electronic control system of water pump test board with two kinds of high voltage power supplies of 6 kV and 10 kV |
JP2018524778A (en) * | 2015-07-06 | 2018-08-30 | ロッテ ケミカル コーポレーション | Redox flow battery |
Also Published As
Publication number | Publication date |
---|---|
JP3697273B2 (en) | 2005-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6236580B1 (en) | Modular multi-level adjustable supply with series connected active inputs | |
Enjeti et al. | Programmed PWM techniques to eliminate harmonics-A critical evaluation | |
US6188139B1 (en) | Integrated marine power distribution arrangement | |
JP2020526178A (en) | Chain multi-port grid connection interface device and control method | |
EP1494343B1 (en) | Frequency converter and drive for electric motor | |
US7532490B2 (en) | Converter topology and methods for interfacing an electrical machine to electrical power grid | |
CN108281970A (en) | A kind of AC excitation synchronous capacitor and its control method | |
BRPI1010336A2 (en) | power distribution system | |
RU185666U1 (en) | MULTI-PHASE VESSEL ELECTRIC MOVEMENT SYSTEM | |
US4481455A (en) | Method of starting variable-speed induction motor | |
CA2835297A1 (en) | Electric drivetrain of a device, and gas compression equipment including such a drivetrain | |
Malinowski | Cascaded multilevel converters in recent research and applications | |
Limpaecher | Novel converters for electric ship propulsion system and shipboard power distribution | |
JP3237983B2 (en) | Multiple inverter device | |
Ali et al. | AC-AC Converters | |
JPH0835483A (en) | Electromagnetic pump device | |
CN114567012B (en) | Wind power direct current sending-out system and control method thereof | |
Li et al. | Modular multilevel converters: Recent applications [History] | |
JP2783204B2 (en) | Control method of PWM converter | |
JPS61240829A (en) | Operation of pump-up generator motor | |
da Silva Dias et al. | Transformerless topologies for medium voltage converters | |
CN110401366A (en) | Modular series connection combined variable parallel operation based on type multiphase permanent magnet generator | |
Castellan et al. | Comparative performance analysis of VSI and CSI supply solutions for high power multi-phase synchronous motor drives | |
JP2000125568A (en) | Inverter power supply device | |
Ni et al. | SCR-front-end regenerative CHB drive with improved harmonic profile |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050310 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050405 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050531 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20050628 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050704 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090708 Year of fee payment: 4 |
|
LAPS | Cancellation because of no payment of annual fees |