JPH0297900U - - Google Patents
Info
- Publication number
- JPH0297900U JPH0297900U JP355689U JP355689U JPH0297900U JP H0297900 U JPH0297900 U JP H0297900U JP 355689 U JP355689 U JP 355689U JP 355689 U JP355689 U JP 355689U JP H0297900 U JPH0297900 U JP H0297900U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- field
- variable speed
- alternating current
- circuit
- 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
- 238000004804 winding Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Eletrric Generators (AREA)
Description
第１図及び第２図は本考案の一実施例を示すも
ので、その内、第１図は接続図、第２図は界磁電
流と回転数の関係を示す特性図である。第３図は
従来例の場合を示す接続図である。
１：交流発電機、１ｂ：界磁巻線、１５：ダイ
オード、１８：電流検出器、１９：電圧検出器、
２０：演算回路。
1 and 2 show an embodiment of the present invention, in which FIG. 1 is a connection diagram, and FIG. 2 is a characteristic diagram showing the relationship between field current and rotation speed. FIG. 3 is a connection diagram showing a conventional example. 1: AC generator, 1b: Field winding, 15: Diode, 18: Current detector, 19: Voltage detector,
20: Arithmetic circuit.
Claims (1)
の交流発電機の可変周波数交流出力電力を一旦直
流電力に変換して後、所望の周波数の交流出力電
力に変換する整流器、インバータ回路、インバー
タ回路の制御、保護回路及び交流発電機出力電圧
を一定電圧とする電圧制御回路を備えた可変速電
源装置において、上記発電機の界磁電圧を検出す
る電圧検出器およびこの電圧検出器の出力を入れ
て上記交流発電機界磁巻線が許容の最大界磁電圧
以上となつたとき信号を出す演算回路から構成さ
れる可変速電源装置における保護装置。 ２ 上記交流発電機の界磁電流を検出する電流検
出器、上記発電機の界磁電圧を検出する電圧検出
器、これら各検出器から与えられる交流発電機の
界磁電圧と界磁電流により界磁回路の抵抗値を算
出し、この抵抗値が上記界磁巻線が許容の最大温
度相当の抵抗値以上となつたとき信号を出す演算
回路から構成されるようにした請求項１記載の可
変速電源装置における保護装置。 ３ 交流発電機の界磁巻線に並列にダイオードを
接続するようにした請求項１記載の可変速電源装
置における保護装置。[Claims for Utility Model Registration] 1. An alternating current generator connected to a variable speed drive source, which converts the variable frequency alternating current output power of this alternator into direct current power and then converting it into alternating current output power of a desired frequency. A voltage detector for detecting the field voltage of the generator in a variable speed power supply device equipped with a rectifier to be converted, an inverter circuit, a control circuit for the inverter circuit, a protection circuit, and a voltage control circuit that maintains the output voltage of the alternator at a constant voltage. and a protective device in a variable speed power supply device comprising an arithmetic circuit that inputs the output of the voltage detector and outputs a signal when the field winding of the alternating current generator exceeds an allowable maximum field voltage. 2. A current detector that detects the field current of the alternator, a voltage detector that detects the field voltage of the generator, and the field voltage and field current of the alternator provided by these detectors The method according to claim 1, further comprising an arithmetic circuit that calculates the resistance value of the magnetic circuit and outputs a signal when the resistance value exceeds a resistance value corresponding to the maximum allowable temperature of the field winding. Protective device in variable speed power supply. 3. The protection device for a variable speed power supply device according to claim 1, wherein a diode is connected in parallel to the field winding of the alternating current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP355689U JPH0297900U (en) | 1989-01-18 | 1989-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP355689U JPH0297900U (en) | 1989-01-18 | 1989-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0297900U true JPH0297900U (en) | 1990-08-03 |
Family
ID=31205296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP355689U Pending JPH0297900U (en) | 1989-01-18 | 1989-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0297900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262621A (en) * | 2005-03-17 | 2006-09-28 | Mitsubishi Electric Corp | Excitation control unit of generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5288712A (en) * | 1976-01-21 | 1977-07-25 | Hitachi Ltd | Overexcitation limiting apparatus for generating system |
| JPS5541117A (en) * | 1978-09-12 | 1980-03-22 | Fuji Electric Co Ltd | Selffexcited ac generator overvoltage protecting device |
| JPS60121999A (en) * | 1983-12-01 | 1985-06-29 | Sawafuji Electric Co Ltd | Engine-driven self-excited generator |
| JPS6118400A (en) * | 1984-07-04 | 1986-01-27 | Toyo Denso Co Ltd | Voltage control for generator |
-
1989
- 1989-01-18 JP JP355689U patent/JPH0297900U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5288712A (en) * | 1976-01-21 | 1977-07-25 | Hitachi Ltd | Overexcitation limiting apparatus for generating system |
| JPS5541117A (en) * | 1978-09-12 | 1980-03-22 | Fuji Electric Co Ltd | Selffexcited ac generator overvoltage protecting device |
| JPS60121999A (en) * | 1983-12-01 | 1985-06-29 | Sawafuji Electric Co Ltd | Engine-driven self-excited generator |
| JPS6118400A (en) * | 1984-07-04 | 1986-01-27 | Toyo Denso Co Ltd | Voltage control for generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262621A (en) * | 2005-03-17 | 2006-09-28 | Mitsubishi Electric Corp | Excitation control unit of generator |
| JP4515943B2 (en) * | 2005-03-17 | 2010-08-04 | 三菱電機株式会社 | Generator excitation control device |
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