JPS60187269A - Power recovery controller - Google Patents
Power recovery controllerInfo
- Publication number
- JPS60187269A JPS60187269A JP59043078A JP4307884A JPS60187269A JP S60187269 A JPS60187269 A JP S60187269A JP 59043078 A JP59043078 A JP 59043078A JP 4307884 A JP4307884 A JP 4307884A JP S60187269 A JPS60187269 A JP S60187269A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- regeneration
- power
- rectification
- output
- 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.)
- Pending
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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
- Inverter Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は電力回生制御装置、特に交流電力から直流電
源としての平滑コンデンサへ、また外部から平滑コンデ
ンサを充電する時や停電等によって直流電源側の方が交
流電源側よシ高電位になったときには、直流電源として
の平滑コンデンサから交流電源へと電力を回生ずる電力
回生制御装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a power regeneration control device, particularly a power regeneration control device that converts AC power to a smoothing capacitor as a DC power source, and also when charging a smoothing capacitor from the outside or when a power outage occurs. The present invention relates to a power regeneration control device that regenerates power from a smoothing capacitor serving as a DC power source to an AC power source when the AC power source has a higher potential than the AC power source.
第１図は従来の電力回生制御装置の回路図であシ、第１
図において、１は強制転流のできる電気弁としてのトラ
ンジスタＴｒｉ〜Ｔｒ６とダイオードＤ１〜Ｄ６を互い
に逆並列に接続した複数の複合体Ｑ１〜Ｑ６で構成した
整流兼回生回路、２は整流兼回生回路１の交流側を多相
交流電源３に接続する接続路に設けた交流リアクトル、
４は前記整流兼回生回路１の直流側に並列接続した直流
電源としての平滑コンデンサ、５は前記平滑コンデンサ
４と並列接続した分圧抵抗、６はダイオードＤ７〜Ｄ１
２で構成し、交流側を絶縁トランス２２を介して前記多
相交流電源３に接続したブリッジ形整流回路、７．８は
前記ブリッジ形整流回路−６の直流側に並列接続した平
滑コンデンサと分圧抵抗、１０は前記分圧抵抗５，８の
出力電圧を加算する加算回路、１１は加算回路１０の出
力を入力とするハンチング防止用のヒステレシス回路、
１２は多相交流電源３の出力を入力し前記複合体Ｑ１〜
Ｑ６と同数の出力端子を有する電気弁開閉順序回路、１
３は前記平滑コンデンサ４から前記多相交流電源３への
回生直流電流を検出する直流変流器、１４は直流変流器
１３の出力電圧と基準電圧発生源１５０基準電圧とを比
較する比較回路、１６１〜１６６は前記電気弁開閉順序
回路１２の各出力端子を入力端子に接続し、他方の入力
端子に前記ヒステレシス回路１１の出力端子および前記
比較回路１４の出力を入力とするラッチ回路１１の出力
端子が接続されたアントゲ−）、１８１〜１８６はアン
トゲ−目６１〜１６６の出力を増幅して、前記電気弁と
してのトランジスタＴｒｉ〜Ｔｒ６のベースに供給する
増幅回路である。ここで、電気弁開閉順序回路１２、ア
ンドゲート１６１〜１６６、増幅回路１８１〜１８６と
け電気弁駆動回路を構成している。１９は前記平滑コン
デンサ４の直流電圧を交流電圧に変換するインバータ回
路１９に接続した交流負荷である。Figure 1 is a circuit diagram of a conventional power regeneration control device.
In the figure, 1 is a rectification/regeneration circuit composed of a plurality of complexes Q1 to Q6 in which transistors Tri to Tr6 and diodes D1 to D6 are connected in antiparallel to each other as electric valves capable of forced commutation, and 2 is a rectification and regeneration circuit. an AC reactor provided in a connection path connecting the AC side of the circuit 1 to the multiphase AC power supply 3;
4 is a smoothing capacitor as a DC power supply connected in parallel to the DC side of the rectifier/regeneration circuit 1, 5 is a voltage dividing resistor connected in parallel with the smoothing capacitor 4, and 6 is a diode D7 to D1.
2, the AC side is connected to the polyphase AC power supply 3 via the isolation transformer 22, and 7.8 is a smoothing capacitor connected in parallel to the DC side of the bridge rectifier circuit 6. a piezoresistor; 10 is an adder circuit for adding the output voltages of the voltage dividing resistors 5 and 8; 11 is a hysteresis circuit for hunting prevention that receives the output of the adder circuit 10;
12 inputs the output of the multiphase AC power supply 3 and connects the complex Q1 to
Electric valve opening/closing sequence circuit with the same number of output terminals as Q6, 1
3 is a DC current transformer that detects the regenerative DC current from the smoothing capacitor 4 to the multiphase AC power supply 3; 14 is a comparison circuit that compares the output voltage of the DC transformer 13 with the reference voltage of the reference voltage source 150; , 161 to 166 are latch circuits 11 each of which connects each output terminal of the electric valve opening/closing sequence circuit 12 to an input terminal, and whose other input terminal receives the output terminal of the hysteresis circuit 11 and the output of the comparison circuit 14. Reference numerals 181 to 186 denote amplifying circuits to which output terminals are connected, which amplify the outputs of the antagonists 61 to 166 and supply the amplified outputs to the bases of the transistors Tri to Tr6 serving as the electric valves. Here, the electric valve opening/closing sequence circuit 12, AND gates 161 to 166, and amplifier circuits 181 to 186 constitute an electric valve drive circuit. 19 is an AC load connected to an inverter circuit 19 that converts the DC voltage of the smoothing capacitor 4 into AC voltage.
従来の電力回生制御装置は上記のように構成され、分圧
抵抗５の出力電圧が分圧抵抗８の出力電圧よシ低いカ行
時は、ヒステレシス回路１１の出力がないため、アンド
ゲート１６１〜１６６のいずれからも出力がなく、従っ
て、電気弁としてのトランジスタＴｒｉ〜Ｔｒ６は閉（
導通）されない。The conventional power regeneration control device is configured as described above, and when the output voltage of the voltage dividing resistor 5 is lower than the output voltage of the voltage dividing resistor 8, there is no output from the hysteresis circuit 11, so that the AND gates 161 to There is no output from any of the transistors 166 and therefore the transistors Tri to Tr6 as electric valves are closed (
conduction) is not established.
一方、負荷変動などによって、第２図ａに示すように平
滑コンデンサ４の充電電圧Ｖｃが多相交流電源電圧Ｖｐ
（相聞電圧のピーク値）よシ大きくなシ、分圧抵抗５の
出力電圧が分圧抵抗８の出力電圧よシ高くなると、ヒス
テレシス回路１１の出力がアンドゲート１６１〜１６６
に印加されるため、′電気弁開閉順序回路１２の出力が
アンドゲート１６１〜１６６、増幅回路１８１〜１８６
を介して順次電気弁であるトランジスタＴｒｉ〜Ｔｒ６
のベースに印加される。このとき、トランジスタＴｒｉ
〜Ｔｒ６に第２図すに示す電圧が印加されているため、
トランジスタＴｒｉ〜Ｔｒ６は順次に導通して第２図Ｃ
に示す回生電流を流す。この結果、仁の導通したトラン
ジスタを通じて直流電源としてのコンデンサ４側から多
相交流電源３側へ電力を回生する。On the other hand, due to load fluctuations, as shown in FIG.
When the output voltage of the voltage dividing resistor 5 becomes higher than the output voltage of the voltage dividing resistor 8, the output of the hysteresis circuit 11 becomes higher than the output voltage of the AND gates 161 to 166.
Since the output of the electric valve opening/closing sequence circuit 12 is applied to
The transistors Tri to Tr6, which are electric valves,
is applied to the base of At this time, the transistor Tri
~Since the voltage shown in Figure 2 is applied to Tr6,
The transistors Tri to Tr6 are sequentially turned on and shown in FIG. 2C.
Apply the regenerative current shown in . As a result, power is regenerated from the capacitor 4 side serving as a DC power source to the multiphase AC power source 3 side through the transistor that is turned on.
第３図は３相交流電源の３相出カＲ，Ｔ、Ｓの区間Ａ、
Ｂ、Ｃ’、Ｄ、Ｅ、Ｆ’ＩＣ対シテ、トランジスタＴｒ
ｉ〜Ｔｒ６の開閉順序を示す図で、上記の開閉順序にょ
シ、相間電圧の最も高い相間に回生ずることになる。Figure 3 shows section A of three-phase outputs R, T, and S of a three-phase AC power supply.
B, C', D, E, F' IC vs. transistor, transistor Tr
This is a diagram showing the opening/closing order of Tr i to Tr6. In the above opening/closing order, regeneration occurs between the phases with the highest phase-to-phase voltage.
しかるに、上記従来の回路構成では、例えば瞬間停電（
以下、瞬停と称す）があった場合、コンデン？４、導通
したトランジスタ、交流リアクトル２、降下トランス９
、交流リアクトル２、降下トランス９、交流リアクトル
２、導通したトランジスタ、コンデンサ４の経路に流れ
る回生電流が規定値以上になると、この回生電流値を検
出した直流変流器１３の出力電圧が基準電圧発生源１５
の基準電圧よシ高くなシ、比較回路１４の出方でラッチ
回路１７を作動させてその出方を低下させる。このため
、電気弁駆動回路から電気弁駆動信号の発生がなくなシ
、トランジスタＴｒｉ〜Ｔｒ６の全てが閉（導通）され
なくなって回生動作を停止する。However, with the above conventional circuit configuration, for example, momentary power outage (
If there is a momentary power outage (hereinafter referred to as a momentary power outage), will the condensation? 4. Conductive transistor, AC reactor 2, drop-down transformer 9
, AC reactor 2, step-down transformer 9, AC reactor 2, conductive transistor, and capacitor 4, when the regenerative current flowing through the path exceeds the specified value, the output voltage of the DC current transformer 13 that detected this regenerative current value becomes the reference voltage. Source 15
When the reference voltage is higher than the reference voltage, the latch circuit 17 is activated by the output of the comparator circuit 14 to lower the output. Therefore, the electric valve drive signal is no longer generated from the electric valve drive circuit, and all of the transistors Tri to Tr6 are no longer closed (conducted), thereby stopping the regeneration operation.
つまシ、回生動作が過電流で停止して瞬停を乗シ切れな
い場合がある。また、何らかの負荷変動で回生電力が急
増した場合にも運転続行ができないという欠点があった
。In some cases, the regenerative operation may stop due to overcurrent and be unable to overcome a momentary power outage. Another drawback is that even if the regenerated power suddenly increases due to some kind of load change, operation cannot be continued.
この発明は係る欠点を改善するためになされたもので、
回生電流が規定値以上になると自動的に所定時間１回生
動作を停止させることによシ、瞬停を乗り切り運転続行
可能、また、負荷変動による回生電流急増時にも運転続
行可能な電力回生制御装置を提案するものである。This invention was made to improve such drawbacks,
A power regeneration control device that automatically stops regenerative operation for a predetermined period of time when the regenerative current exceeds a specified value, allowing it to survive momentary power outages and continue operation.Also, it can continue operating even when the regenerative current suddenly increases due to load fluctuations. This is what we propose.
第４図はこの発明の１実施例を示すものであシ、前記第
１図におけるラッチ回路１Ｔの代りに単安定マルチバイ
ブレータ（以下、ワンショットマルチと称す）２１を設
けた以外は該第１図と同一の構成である。なお、第４図
中、点線部分は省略してもよいことを示す。FIG. 4 shows one embodiment of the present invention, except that a monostable multivibrator (hereinafter referred to as one-shot multi) 21 is provided in place of the latch circuit 1T in FIG. It has the same configuration as the figure. Note that the dotted line portion in FIG. 4 indicates that it may be omitted.
力行動作および回生動作は前記第１図の従来装置と同じ
である。しかし、第５図に示すように、瞬停または何ら
かの負荷変動によって、回生電流がコンパレータ１４の
セット値ｖ８以上つまり規定値以上流れると、ワンショ
ットマルチ２１の出力（第５図）で決定される時間Ｔ１
だけ自動的に回生動作を停止する。従って、上記コンパ
レータ１４のセット値を電気弁としてのトランジスタの
定格電流以内に設定しておくことによシ、瞬停時には、
回生停止１回生開始を自動的に繰返して運転停止を生ず
るととがない。なお、第５図中、では回生側の負荷増大
域を示す。The power operation and regeneration operation are the same as those of the conventional device shown in FIG. However, as shown in Fig. 5, if the regenerative current flows beyond the set value v8 of the comparator 14, that is, above the specified value, due to an instantaneous power failure or some kind of load fluctuation, the output of the one-shot multi 21 (Fig. 5) is determined. Time T1
only automatically stops regeneration operation. Therefore, by setting the set value of the comparator 14 within the rated current of the transistor as an electric valve, in the event of a momentary power failure,
There is no point in automatically repeating regeneration stop and regeneration start to cause an operation stop. In addition, in FIG. 5, the area where the load increases on the regeneration side is shown.
上記時間Ｔはトランジスタのスイッチングスピードが大
きくなシ、スイッチングロスによ＃）トランジスタが破
壊するのを防いでいる。この時間Ｔは適当でよいが、長
すぎると、コンデンサの充電電圧が高くなって、トラン
ジスタのスイッチング回数が多くなりすぎるので注意を
要する。The above time T prevents the transistor from being destroyed due to switching loss since the switching speed of the transistor is high. This time T may be any suitable value, but care must be taken because if it is too long, the charging voltage of the capacitor will become high and the number of times the transistor will be switched will become too large.
この発明は以上説明したとおシ、回生電流が規定値以上
になると自動的に所定時間２回生動作を停止させること
によシ、瞬停または負荷変動による回生゛電流急増によ
っても運転続行が可能である。As explained above, this invention automatically stops the regenerative operation for a predetermined period of time when the regenerative current exceeds a specified value, thereby making it possible to continue operation even when the regenerative current suddenly increases due to momentary power outages or load fluctuations. be.
また、回生電流を規定値以上流さないから、電気弁とし
てのトランジスタなどの回路素子の破壊を未然に防止で
きるという効果がある。Furthermore, since the regenerative current does not exceed a specified value, it is possible to prevent damage to circuit elements such as transistors serving as electric valves.
なお、実施例は多相交流電源として３相交流電源を例示
したが、単相または３相以上の多相であってもよい。ま
た、電気弁としては実施例のトランジスタの他サイリス
タ、電力用ＭＯ８ＦＥＴなどでもよい。さらに、実施例
のブリッジ形整流回路６、平滑コンデンサ７、分圧抵抗
８の代りに別個独立の基準電圧発生回路を用いることも
できる。In the embodiment, a three-phase AC power source is used as an example of the polyphase AC power source, but it may be a single-phase power source or a polyphase power source having three or more phases. Further, the electric valve may be a thyristor, a power MO8FET, or the like in addition to the transistor of the embodiment. Furthermore, a separate reference voltage generating circuit may be used in place of the bridge rectifier circuit 6, smoothing capacitor 7, and voltage dividing resistor 8 of the embodiment.
実施例は回生動作一時停止のためにブリッジ回路１の電
気弁であるトランジスタの全てを閉（導通）させないよ
うにしているが、対をなすトランジスタ例えばＴｒｉと
Ｔｒ４ 、 Ｔｒ２とＴｒ５ 、 Ｔｒ３とＴｒ６の一
方のみを閉させないようにしてもよい。In the embodiment, in order to temporarily stop the regenerative operation, all of the transistors that are the electric valves of the bridge circuit 1 are not closed (conducted). Only one side may not be closed.
第１図は従来の電力回生制御装置を示す回路図、第２図
はその回路による回生動作説明図、第３図は電気弁開閉
順序回路の動作説明図、第４図はこの発明の１実施例を
示す回路図、第５図はその回路による回生動作説明図で
ある。
図において、１・・・整流兼回生回路、２・・・交流リ
アクトル、３・・・多相交流電源、４・・・平滑コンデ
ンサ、５，８・・・分圧抵抗、６・・・ブリッジ形整流
回路、り噌６１．箭生０ツｎ７キバスゴ１ノーＡ−なお
、各図中同一符号は同一または相当部分を示す。
特許出願人 三菱電機株式会社
第１図
、／１
第２図
第３図
Ａ ＢＣＤＥＦ Ａ ＢＣ
第４図
第６図Fig. 1 is a circuit diagram showing a conventional power regeneration control device, Fig. 2 is an explanatory diagram of the regeneration operation by the circuit, Fig. 3 is an explanatory diagram of the operation of the electric valve opening/closing sequence circuit, and Fig. 4 is an embodiment of the present invention. FIG. 5 is a circuit diagram showing an example, and is an explanatory diagram of regeneration operation by the circuit. In the figure, 1... Rectifier and regeneration circuit, 2... AC reactor, 3... Multiphase AC power supply, 4... Smoothing capacitor, 5, 8... Voltage dividing resistor, 6... Bridge Shape rectifier circuit, Riso 61. Kyo 0 Tsu n 7 Ki Basu Go 1 No A - Note that the same reference numerals in each figure indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation Figure 1, /1 Figure 2 Figure 3 A BCDEF A BC Figure 4 Figure 6
Claims (1)
接続した複数の複合体でブリッヂ構成した整流兼回生回
路と、前記整流兼回生回路の交流側を多相交流電源に接
続する接続路に設けた交流リアクトルと、前記整流兼回
生回路の直流側に並列接続した平滑コンデンサと、前記
平滑コンデンサの充電電圧と基準電圧を比較して回生開
始信号を発生する回生開始信号発生回路と、前記回生開
始信号を受けて前記整流兼回生回路の電気弁に順次に開
閉駆動信号を供給する電気弁駆動回路と、前記平滑コン
デンサから前記多相交流電源への回生電流が規定値以上
になったとき、一定時間回生動作を停止させる回生動作
一時停止回路と、を備えたことを特徴とする電力回生制
御装置。A rectification/regeneration circuit configured as a bridge with a plurality of complexes in which electric valves and diodes capable of forced commutation are connected in antiparallel to each other, and a connection path that connects the AC side of the rectification/regeneration circuit to a multiphase AC power source. an AC reactor, a smoothing capacitor connected in parallel to the DC side of the rectification and regeneration circuit, a regeneration start signal generation circuit that compares the charging voltage of the smoothing capacitor with a reference voltage and generates a regeneration start signal, and the regeneration start signal. an electric valve drive circuit that receives a signal and sequentially supplies an opening/closing drive signal to the electric valves of the rectification and regeneration circuit; A power regeneration control device comprising: a regeneration operation temporary stop circuit that stops a time regeneration operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59043078A JPS60187269A (en) | 1984-03-07 | 1984-03-07 | Power recovery controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59043078A JPS60187269A (en) | 1984-03-07 | 1984-03-07 | Power recovery controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60187269A true JPS60187269A (en) | 1985-09-24 |
Family
ID=12653807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59043078A Pending JPS60187269A (en) | 1984-03-07 | 1984-03-07 | Power recovery controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60187269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323582A (en) * | 1986-05-21 | 1988-01-30 | コ−ネ・エレベ−タ−・ゲ−エムベ−ハ− | Method and apparatus of controlling brake resistance of freouency converter |
-
1984
- 1984-03-07 JP JP59043078A patent/JPS60187269A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323582A (en) * | 1986-05-21 | 1988-01-30 | コ−ネ・エレベ−タ−・ゲ−エムベ−ハ− | Method and apparatus of controlling brake resistance of freouency converter |
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