JPH04135568U - elevator control device - Google Patents
elevator control deviceInfo
- Publication number
- JPH04135568U JPH04135568U JP5271491U JP5271491U JPH04135568U JP H04135568 U JPH04135568 U JP H04135568U JP 5271491 U JP5271491 U JP 5271491U JP 5271491 U JP5271491 U JP 5271491U JP H04135568 U JPH04135568 U JP H04135568U
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- Prior art keywords
- power
- voltage
- private
- reference value
- detection device
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- 230000001172 regenerating effect Effects 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 12
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
(57)【要約】
【目的】 停電時に使用する自家交流発電機の容量を低
減してエレベータのビル設備費用を軽減させること。
【構成】 インバータ装置の直流電源電圧制御系の前向
き要素に回生電流制限用のリミッタを挿入するととも
に、直流電源電圧が所定値に達すれば発電制動回路を動
作させるように構成するもの。
(57) [Summary] [Purpose] To reduce the cost of elevator building equipment by reducing the capacity of private AC generators used during power outages. [Structure] A limiter for limiting regenerative current is inserted into the forward-facing element of the DC power supply voltage control system of the inverter device, and the dynamic braking circuit is activated when the DC power supply voltage reaches a predetermined value.
Description
【０００１】0001
本考案は、エレベータの制御装置に関し、特に停電などにより買電の供給が断 れたときに自家発電機によりエレベータを運転するようにしたものに好適なエレ ベータの制御装置に関するものである。 This invention relates to elevator control devices, especially when the supply of purchased electricity is interrupted due to power outages, etc. This elevator is suitable for systems that use a private generator to operate the elevator when the This relates to the Beta control device.
【０００２】0002
近年、パワーエレクトロニクスやマイクロコンピュータ技術の向上によりイン バータによる誘導電動機の制御が著しく発展してきており、誘導電動機のインバ ータ制御は、誘導電動機の回転速度に対応して、インバータの出力電圧、出力周 波数を制御するため、誘導電動機を効率よく使用することができる。 In recent years, improvements in power electronics and microcomputer technology have led to improvements in power electronics and microcomputer technology. The control of induction motors using converters has progressed significantly, and the The motor control adjusts the inverter's output voltage and output frequency according to the rotation speed of the induction motor. Since the wave number is controlled, the induction motor can be used efficiently.
【０００３】 特に、高頻度に加減速を繰り返す交流エレベータでは、大きな省電力効果が得 られる。0003 In particular, AC elevators that accelerate and decelerate frequently can have a significant power saving effect. It will be done.
【０００４】 図２は、このような省エネ型のインバータ制御エレベータを買電のみならず自 家発電機でも運転できる主回路を示す図であり、図中１は３相の商用電源、２は ３相の自家交流発電機、３は商用電源１を使用時に閉成する接点、４は自家交流 発電機２を使用時に閉成する接点で、接点３，４は周知のとおりインターロック がとられており、同時に閉成することがないようになっている。５は整流器で、 ３相電圧を整流して直流を得て平滑用コンデンサ６で平滑電圧とした上でインバ ータ装置７に直流電源電圧を供給し、インバータ装置７は、３相の誘導電動機８ に３相電力を供給する。0004 Figure 2 shows how such an energy-saving inverter-controlled elevator can be used not only for purchasing power but also for self-driving. This is a diagram showing the main circuit that can be operated with a home generator. In the diagram, 1 is a 3-phase commercial power supply, and 2 is a 3-phase commercial power supply. 3-phase private alternating current generator, 3 is a contact that closes when commercial power supply 1 is used, 4 is private alternating current This is a contact that closes when generator 2 is in use, and contacts 3 and 4 are interlocks as is well known. is taken to prevent them from closing at the same time. 5 is a rectifier; The three-phase voltage is rectified to obtain direct current, which is smoothed with the smoothing capacitor 6, and then inverted. The inverter device 7 supplies a DC power supply voltage to the inverter device 7, and the inverter device 7 supplies a three-phase induction motor 8. Supplies 3-phase power to
【０００５】 尚、９は鋼車、１０はエレベータかご、１１はカウンターウェイト、１２は主 索であり、１３は電力回生用コンバータである。[0005] In addition, 9 is a steel car, 10 is an elevator car, 11 is a counterweight, and 12 is a main 13 is a power regeneration converter.
【０００６】 図２において、商用電源１を使用時、全負荷下降あるいは無負荷上昇時におい ては、不平衡荷重により誘導電動機８は電力を回生し、その回生電力を電力回生 用コンバータ１３を介して電源母線へ供給する。この母線は無限大の電力吸収能 力を有しており、エレベータは安定に運転制御される。[0006] In Figure 2, when using commercial power supply 1, when full load is lowered or when no load is increased, In this case, the induction motor 8 regenerates power due to the unbalanced load, and the regenerated power is used for power regeneration. The power is supplied to the power supply bus through the converter 13. This bus has infinite power absorption capacity The elevator is controlled in a stable manner.
【０００７】[0007]
一方、停電時などで自家交流発電機２が運転されるときは、回生電力の供給を 受けると、発電機負荷として電力を吸収する他の負荷を通常設けていないので、 自家交流発電機２を駆動するエンジン等の原動機の回転数が上昇し、機械系が破 損したり、自家交流発電機２の出力電圧が異常上昇するなどして、整流器５，イ ンバータ装置７を構成する半導体素子の許容電圧を上回り、半導体素子を破壊す るなどの問題を生ずる欠点があった。 On the other hand, when the private AC generator 2 is operated during a power outage, etc., the supply of regenerative power is When the power is received, there is usually no other load to absorb the power as a generator load, so The rotational speed of the prime mover such as the engine that drives the private AC generator 2 increases, causing damage to the mechanical system. If the output voltage of the private alternator 2 increases abnormally, the rectifier 5, If the voltage exceeds the permissible voltage of the semiconductor elements constituting the inverter device 7, it may destroy the semiconductor elements. There were drawbacks such as problems such as:
【０００８】 又、停電時等にエレベータ運転に用いる自家交流発電機について、最大回生電 力を吸収できるような容量のものを準備できればよいが、前述のとおり、電動機 制御技術の進歩によりエレベータの省電力化が図られ、これに伴い比較的大容量 のエレベータが出現している。そしてエレベータが発生する回生電力も増加傾向 にあり、その最大回生電力は、エレベータの仕様によっても異なるが、一般的に 巻上電動機定格容量の１〜１．５倍程度になり、ビル設備の大幅な費用負担が問 題となる。[0008] In addition, regarding the private AC generator used for elevator operation during power outages, the maximum regenerative power It would be better if you could prepare something with a capacity that can absorb the force, but as mentioned above, an electric motor Advances in control technology have led to lower power consumption in elevators, and as a result, relatively large capacity elevators have appeared. And the regenerative power generated by elevators is also on the rise. The maximum regenerative power varies depending on the elevator specifications, but generally The capacity will be approximately 1 to 1.5 times the rated capacity of the hoisting motor, and there will be a significant cost burden for building equipment. It becomes a problem.
【０００９】 本考案は上記の点に鑑みなされたもので、自家発電機の容量を軽減させるとと もに、回生電力による発電機の異常高電圧の発生を抑制し、半導体素子の破損を 防止することができるエレベータの制御装置を提供することを目的とする。[0009] This invention was created in view of the above points, and aims to reduce the capacity of private generators. It also suppresses the generation of abnormally high voltage in the generator due to regenerated power and prevents damage to semiconductor elements. It is an object of the present invention to provide an elevator control device that can prevent such problems.
【００１０】0010
本考案は、自家交流発電機と、これに接続され直流電源を得る回生可能な整流 装置と、該直流電源に接続されて誘導電動機を制御し、かつ該誘導電動機のエネ ルギーを直流電源へ回生可能なインバータ装置が主回路に備えられたエレベータ において、該主回路には直流電源の電圧検出装置と、インバータ装置の電流検出 装置と、発電制動装置とを設け、電圧検出装置の出力電圧を第１基準値に制御す る制御系を有し、該制御系の前向き要素には回生電流を制限するリミッタを備え 、電圧検出装置の出力電圧が第２基準値を超えると発電制動装置を作動させるコ ンパレータを有する制御装置を備えるものである。 This invention consists of a private AC generator and a regenerative rectifier connected to it to obtain DC power. a device connected to the DC power supply to control an induction motor and to supply energy to the induction motor; An elevator whose main circuit is equipped with an inverter device that can regenerate energy into DC power. In the main circuit, there is a voltage detection device for the DC power supply and a current detection device for the inverter device. and a dynamic braking device to control the output voltage of the voltage detection device to a first reference value. The forward-facing element of the control system is equipped with a limiter that limits the regenerative current. , a controller that operates the dynamic braking device when the output voltage of the voltage detection device exceeds the second reference value. It is equipped with a control device having a comparator.
【００１１】[0011]
以上の如く構成すれば、回生エネルギーが大きい場合には発電制動がきわめて 適切に行われる。 With the above configuration, if the regenerated energy is large, the dynamic braking will be extremely effective. Done properly.
【００１２】0012
図１は本考案の一実施例を示す主回路図であり、図３は本考案による制御装置 のブロック図である。 FIG. 1 is a main circuit diagram showing an embodiment of the present invention, and FIG. 3 is a control device according to the present invention. FIG.
【００１３】 図中、図２と同一符号のものは同一のものを示すが、２０はコンデンサ６の端 子電圧，即ち直流電圧２０ａを検出する電圧検出装置、２１は電源電流を検出す る電流検出装置、３０は電流検出装置２１から得られる電源電流信号２１ａ，特 に回生電流を所定値に制限するとともに、電圧検出装置２０から得られる直流電 圧２０ａを第１基準値Ｅ1 に抑制し、さらに直流電圧２０ａが第２基準値Ｅ2 を 超えるようならばトランジスタＴｒにベース信号を与えて回生電力を抵抗１４で 消費させる制御装置である。[0013] In the figure, the same reference numerals as those in FIG. , 30 limit the power supply current signal 21a obtained from the current detection device 21, especially the regenerative current, to a predetermined value, and suppress the DC voltage 20a obtained from the voltage detection device 20 to a first reference value E1 , and further limit the DC voltage 20a exceeds the second reference value E 2 , the control device applies a base signal to the transistor Tr to cause the regenerated power to be consumed by the resistor 14.
【００１４】 ３１は第１基準値Ｅ1 と直流電圧２０ａとを比較し、偏差信号を出力する減算 器、３２は電圧調節器、３３は電流制限用リミッタ、３４は正弦波電流指令信号 ３４ａを出力するサイン変調器、３５は正弦波電流指令信号３４ａと電源電流信 号２１ａとを比較し、偏差信号を出力する減算器、３６は電流調節器、３７は第 ２基準値Ｅ2 と直流電圧２０ａとを比較し直流電圧２０ａが第２基準値Ｅ2 を超 えるとトランジスタＴｒをオンさせる発電制動信号３７ａを出力するヒステリシ ス付コンパレータである。31 is a subtracter that compares the first reference value E 1 and the DC voltage 20a and outputs a deviation signal; 32 is a voltage regulator; 33 is a current limiter; 34 is a sine wave current command signal 34a; 35 is a subtractor that compares the sine wave current command signal 34a and the power supply current signal 21a and outputs a deviation signal, 36 is a current regulator, and 37 is the second reference value E 2 and the DC voltage 20a. This is a comparator with hysteresis that outputs a dynamic braking signal 37a that turns on the transistor Tr when the DC voltage 20a exceeds the second reference value E2 .
【００１５】 このような構成であれば、エレベータの自家発電運転時において電流制限用リ ミッタ３３により負荷からの回生電流を大きく抑えてコンデンサ６への充電を抑 制するとともに、電圧調節器３２により直流電圧２０ａを第１基準値Ｅ1 に保持 するように、制御装置３０を働かせて電力回生用コンバータ１３のトランジスタ を制御する。そして、万一負荷の回生電力が電源回生分よりも大きいと、直流電 圧２０ａが電力回生用コンバータ１３のトランジスタによる制御を行っても除々 に上昇し第１基準値を超え、第２基準値Ｅ2 に到達すると、ヒステリシスコンパ レータ３７の働きにより、トランジスタＴｒをオンさせて、オーバー分の回生エ ネルギーを抵抗１４で消費させる。このことから、直流電圧２０ａはもはや第２ 基準値より上昇することはない。With this configuration, when the elevator is in private power generation operation, the current limiting limiter 33 greatly suppresses the regenerative current from the load to suppress charging of the capacitor 6, and the voltage regulator 32 controls the DC voltage. The control device 30 is operated to control the transistors of the power regeneration converter 13 so as to maintain the power regeneration voltage 20a at the first reference value E1 . If the regenerated power of the load is larger than the regenerated power of the power supply, the DC voltage 20a will gradually increase even if controlled by the transistor of the power regeneration converter 13 and exceed the first reference value, and the second reference value E 2 , the hysteresis comparator 37 turns on the transistor Tr and causes the resistor 14 to consume the excess regenerative energy. From this, the DC voltage 20a will no longer rise above the second reference value.
【００１６】 つまり、全負荷下降や無負荷上昇など不平衡荷重による機械的仕事が誘導電動 機８により電気エネルギーに変換され、このエネルギーがインバータ装置７を介 して直流電力に変換され、又この直流電力が電力回生用コンバータ１３によって 自家交流発電機２に回生され、この回生エネルギーが一定量（誘導電動機８の定 格容量の０．７倍程度）を超える（自家交流発電機２の容量により異なる）と、 直流電圧が上昇し、この電圧が基準値を超えた場合に、ヒステリシスコンパレー タ３７の出力によりトランジスタＴｒをオンさせ余分なエネルギーを抵抗１４で 消費させるものである。尚、負荷からの回生電力が減少すると、直流電圧２０ａ は除々に減少し始め、トランジスタＴｒがオフすることにより抵抗１４でのエネ ルギー消費がなくなって、最終的には第１基準値まで下降する。[0016] In other words, mechanical work due to unbalanced loads such as full load lowering and no load raising is replaced by induced electric power. The machine 8 converts it into electrical energy, and this energy is transferred via the inverter device 7. This DC power is converted into DC power by the power regeneration converter 13. A certain amount of this regenerated energy (a constant amount of the induction motor 8) is regenerated by the private AC generator 2. (approximately 0.7 times the rated capacity) (depending on the capacity of the private AC generator 2), When the DC voltage increases and this voltage exceeds the reference value, the hysteresis comparator The output of the transistor 37 turns on the transistor Tr, and the excess energy is transferred to the resistor 14. It is something to be consumed. Note that when the regenerated power from the load decreases, the DC voltage 20a begins to gradually decrease, and as the transistor Tr turns off, the energy at the resistor 14 increases. energy consumption disappears, and it eventually falls to the first reference value.
【００１７】 したがって、自家交流発電機が吸収する必要のある回生電力を誘導電動機の定 格容量の略０．７倍程度に制限して自家発電機容量の低減をはかることができる とともに、整流器５，インバータ装置７における半導体素子の破損を防止するこ ともできる。[0017] Therefore, the regenerative power that needs to be absorbed by the private alternator is It is possible to reduce the private generator capacity by limiting it to approximately 0.7 times the nominal capacity. At the same time, damage to semiconductor elements in the rectifier 5 and inverter device 7 can be prevented. Can also be done.
【００１８】[0018]
以上述べたように、本考案によれば、自家交流発電機による誘導電動機の運転 時に回生電力による発電機の異常高電圧の発生を抑制でき、半導体素子の破損を 防止できるとともに、自家交流発電機自体の容量の低減化をはかって設備費用の 軽減を行うことができる。 As described above, according to the present invention, the induction motor is operated by a private AC generator. At times, it can suppress the generation of abnormally high voltage in the generator due to regenerative power, and prevent damage to semiconductor elements. This can be prevented, and equipment costs can be reduced by reducing the capacity of the private AC generator itself. Mitigation can be done.
【００１９】[0019]
【図１】本考案の一実施例を示す主回路図である。FIG. 1 is a main circuit diagram showing an embodiment of the present invention.
【図２】従来のインバータ制御エレベータの主回路図で
ある。FIG. 2 is a main circuit diagram of a conventional inverter-controlled elevator.
【図３】本考案による制御装置のブロック図である。FIG. 3 is a block diagram of a control device according to the present invention.
２ 自家交流発電機 ５ 整流器 ７ インバータ装置 ８ 誘導電動機 １３ 電力回生用コンバータ １４ 抵抗 Ｔｒ トランジスタ ２０ 電圧検出装置 ２０ａ 直流電圧 ２１ 電流検出装置 ２１ａ 電源電流信号 ３０ 制御装置 Ｅ1 第１基準値 Ｅ2 第２基準値 ３３ 電流制限用リミッタ ３７ ヒステリシスコンパレータ2 Private AC generator 5 Rectifier 7 Inverter device 8 Induction motor 13 Power regeneration converter 14 Resistor Tr Transistor 20 Voltage detection device 20a DC voltage 21 Current detection device 21a Power supply current signal 30 Control device E 1 First reference value E 2 Second Reference value 33 Current limiter 37 Hysteresis comparator
Claims (1)
電源を得る回生可能な整流装置と、該直流電源に接続さ
れて誘導電動機を制御し、かつ該誘導電動機のエネルギ
ーを前記直流電源へ回生可能なインバータ装置が主回路
に備えられたエレベータにおいて、該主回路には直流電
源の電圧検出装置と、前記インバータ装置の電流検出装
置と、発電制動装置とを設け、前記電圧検出装置の出力
電圧を第１基準値に制御する制御系を有し、該制御系の
前向き要素には回生電流を制限するリミッタを備え、前
記電圧検出装置の出力電圧が第２基準値を超えると前記
発電制動装置を作動させるコンパレータを有する制御装
置を備えたことを特徴とするエレベータの制御装置。Claim 1: A private alternating current generator, a regenerative rectifier connected to the alternating current generator to obtain a direct current power source, and a rectifier connected to the direct current power source to control an induction motor, and to transfer the energy of the induction motor to the direct current power source. In an elevator in which a main circuit is equipped with an inverter device capable of regeneration, the main circuit is provided with a voltage detection device of a DC power supply, a current detection device of the inverter device, and a dynamic braking device, and an output of the voltage detection device The control system includes a control system that controls the voltage to a first reference value, and a forward-facing element of the control system includes a limiter that limits regenerative current, and when the output voltage of the voltage detection device exceeds the second reference value, the dynamic braking is performed. An elevator control device comprising: a control device having a comparator for operating the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5271491U JPH04135568U (en) | 1991-06-11 | 1991-06-11 | elevator control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5271491U JPH04135568U (en) | 1991-06-11 | 1991-06-11 | elevator control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04135568U true JPH04135568U (en) | 1992-12-16 |
Family
ID=31928924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5271491U Pending JPH04135568U (en) | 1991-06-11 | 1991-06-11 | elevator control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04135568U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010215365A (en) * | 2009-03-17 | 2010-09-30 | Mitsubishi Electric Corp | Elevator control system |
| US10081512B2 (en) | 2014-08-06 | 2018-09-25 | Mitsubishi Electric Corporation | Elevator control device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62126089A (en) * | 1985-11-27 | 1987-06-08 | 株式会社日立製作所 | Controller for alternating current elevator |
| JPS62260572A (en) * | 1986-05-02 | 1987-11-12 | Mitsubishi Electric Corp | Controller for ac elevator |
| JPH0213276A (en) * | 1988-06-28 | 1990-01-17 | Fuji Electric Co Ltd | Treatment of regenerative energy of inverter device |
-
1991
- 1991-06-11 JP JP5271491U patent/JPH04135568U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62126089A (en) * | 1985-11-27 | 1987-06-08 | 株式会社日立製作所 | Controller for alternating current elevator |
| JPS62260572A (en) * | 1986-05-02 | 1987-11-12 | Mitsubishi Electric Corp | Controller for ac elevator |
| JPH0213276A (en) * | 1988-06-28 | 1990-01-17 | Fuji Electric Co Ltd | Treatment of regenerative energy of inverter device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010215365A (en) * | 2009-03-17 | 2010-09-30 | Mitsubishi Electric Corp | Elevator control system |
| US10081512B2 (en) | 2014-08-06 | 2018-09-25 | Mitsubishi Electric Corporation | Elevator control device |
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