CN1050474C - Electric machine non-linear exciter automatic controller - Google Patents
Electric machine non-linear exciter automatic controller Download PDFInfo
- Publication number
- CN1050474C CN1050474C CN96107054A CN96107054A CN1050474C CN 1050474 C CN1050474 C CN 1050474C CN 96107054 A CN96107054 A CN 96107054A CN 96107054 A CN96107054 A CN 96107054A CN 1050474 C CN1050474 C CN 1050474C
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- Prior art keywords
- circuit
- phase
- amplifying circuit
- amplify
- signal
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- Control Of Linear Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to an automatic controlling device for the non-linear excitation of a motor. The device is composed of a signal acquisition circuit, a data processing circuit, a pulse amplification circuit and a controlled silicon power circuit, wherein the signal acquisition circuit is used for signal wave filtration, time-shared switching and analog-digital conversion; the data processing circuit locks and calculates data, and then outputs the data; the pulse amplification circuit amplifies signals transmitted by the data processing circuit; the controlled silicon power circuit receives the signals from the pulse amplification circuit according to a certain time sequence and supplies output direct current signals to an exciter winding of the motor. The control device realizes the non-linear control of the excitation of electric generators and has high reliability.
Description
The present invention relates to a kind of electric machine non-linear exciter automatic controller, belong to motor automatic control technology field.
The automatic magnetic exciting control device has material impact to the operation conditions of generator.Well behaved excitation controlling device not only can guarantee the reliability and stability of generator operation, and can improve the economy of power system operation.At present, the generator excitation control device that uses all designs according to linear control theory both at home and abroad, is referred to as " linear excitation controlling device ".Because generator is a kind of non-linear element, therefore, the control effect of " linear excitation controlling device " can not be satisfactory.
The objective of the invention is to design a kind of electric machine non-linear exciter automatic controller, realize nonlinear Control,, guarantee the reliability and stability of generator operation with the optimal control effect to generator excitation.
Designed motor non-linear exciter automatic controller of the present invention is made up of signal acquisition circuit, data processing circuit, pulse amplifying circuit and controllable silicon power circuit.Signal acquisition circuit wherein comprises:
(1) outer transmitter is passed the voltage signal of the motor of coming and the RC filter unit (R that power signal carries out filtering
19, R
17, C
37);
(2) filtered voltage signal and power signal are carried out the variable connector (U that timesharing is switched
21);
(3) the A/D converter (U that the signal after the variable connector output is carried out the A/D conversion
11), its data wire (D
4～D
15) with the data latches (U of computer
13, U
14) link to each other;
Data processing circuit wherein comprises:
(1), receives the data latches (U of A/D translation data
13, U
14);
(2), inside has the single-chip microcomputer (U of memory under program
28);
(3), provide the crystal oscillating circuit of clock signal, comprise capacitor C to single-chip microcomputer
22, C
21With crystal oscillator body XTAL
1,
Pulse amplifying circuit wherein comprises:
(1), amplify "+" amplifying circuit of phase pulse comprises diode D to A
1, resistance R
1, R
2With triode N
1
(2), amplify "+" amplifying circuit of phase pulse comprises diode D to B
2, resistance R
3, R
4With triode N
2
(3), amplify "+" amplifying circuit of phase pulse comprises diode D to C
3, resistance R
5, R
6With triode N
3
(4), amplify "-" amplifying circuit of phase pulse comprises diode D to A
4, resistance R
7, R
8With triode N
4
(5), amplify "-" amplifying circuit of phase pulse comprises diode D to B
5, resistance R
9, R
10With triode N
5
(6), amplify "-" amplifying circuit of phase pulse comprises diode D to C
6, resistance R
11, R
12With diode N
6
Controllable silicon power circuit wherein comprises:
(1) phase of the A in the three-phase alternating current loop two controllable silicons "+A " and " A ";
(2) phase of the B in the three-phase alternating current loop two controllable silicons "+B " and " B ";
(3) phase of the C in the three-phase alternating current loop two controllable silicons "+C " and " C ";
Effect of the present invention is the nonlinear Control that has not only realized generator excitation, and adopted up-to-date single-chip microcomputer control technology, reduced the interruption of service that causes because of the vibration that excitation system causes, making the existing good adjusting function of whole system have very high reliability again, is that the ideal of the excitation controlling device of application is at present changed product.
Description of drawings:
Fig. 1 is the circuit block diagram of designed motor non-linear exciter automatic controller of the present invention.
Fig. 2 is the signal acquisition circuit schematic diagram in the control device.
Fig. 3 is the data processing circuit schematic diagram.
Fig. 4 is the pulse amplifying circuit schematic diagram.
Fig. 5 is a controllable silicon power circuit schematic diagram.
Introduce content of the present invention in detail below in conjunction with accompanying drawing.
The signal acquisition circuit schematic diagram as shown in Figure 2, outer transmitter passes the analog voltage signal (V) of the motor come and simulated power signal (P) through RC filter unit R
19(3k Ω), C
39(30PF) and R
17(3k Ω), C
37(30PF) after the filtering interference signals, give variable connector U
21(AD7506).U
21(P1.0 P1.1) selects analog voltage signal or the timesharing of simulated power signal output to the control signal of sending according to single-chip microcomputer.U
21The signal of output is given A/D converter U
11(AD574A), U
11Is the analog signal conversion that receives digital signal, when the request signal RD of single-chip microcomputer arrives, gives data latches U the digital signal after the conversion
13(74LS373) and U
14(74LS373).
The data processing circuit schematic diagram as shown in Figure 3, data latches U
13(74LS373) and U
14(74LS373) receive A/D converter U
11(AD574A) data of sending here, and these data are passed to 16 single-chip microcomputer U
28(8095), single-chip microcomputer U
28Calculating in the nonlinear control formula of these data substitutions that collect in real time, and be converted into the control corresponding pulse, 6 pulses of output from 6 high speed outputs (+AA ,+BB ,+CC ,-AA ,-BB ,-CC), the nonlinear Control formula is:
Wherein u is a controlled quentity controlled variable, K
1, K
2, K
3, K
4, K
5, K
6, K
7Be constant, Q is a reactive power, and P is an active power, V
tBe the motor set end voltage, ω is a motor speed.
The pulse amplifying circuit schematic diagram as shown in Figure 4.6 pulses that this circuit is exported single-chip microcomputer (+AA ,+BB ,+CC ,-AA ,-BB ,-CC) amplify, so that trigger the controllable silicon power cell of back reliably.Resistance R
2(2K Ω), R
3(2K Ω), R
5(2K Ω), R
7(2K Ω), R
9(2K Ω) and R
11(2K Ω) connect respectively+12 volts power supply, be triode N
1(BC368), N
2(BC368), N
3(BC368), N
4BC368, N
5(BC368) and N
6(BC368) collector provides the electric energy of conducting, thus make output 6 pulses (+A ,+B ,+C ,-A ,-B ,-C) obtain amplifying diode D
1(IN4004), D
2(IN4004), D
3(IN4004), D
4(IN4004), D
5(IN4004) and D
6(IN4004) effect is to prevent oppositely input of pulse, avoids interference the operate as normal of single-chip microcomputer.
Controllable silicon power section circuit theory diagrams as shown in Figure 5, this circuit have 6 controllable silicon+A (kp200) ,+B (kp200) ,+C (kp200) ,-A (kp200) ,-B (kp200) and-C (kp200), its input is three-phase alternating current (380 volts), and 6 controllable silicons are according to the signal of certain time sequence reception from pulse amplifying circuit.Its output is direct current signal, can directly offer the excitation winding of generator.
Claims (1)
1, a kind of electric machine non-linear exciter automatic controller is characterized in that this device is made up of signal acquisition circuit, data processing circuit, pulse amplifying circuit and controllable silicon power circuit; Signal acquisition circuit wherein comprises:
(1) outer transmitter is passed the voltage signal of the motor of coming and the RC filter unit (R that power signal carries out filtering
19, R
17, C
37);
(2) filtered voltage signal and power signal are carried out the variable connector (U that timesharing is switched
21);
(3) the A/D converter (U that the signal after the variable connector output is carried out the A/D conversion
11), its data wire (D
4～D
15) with the data latches (U of computer
13, U
14) link to each other;
Data processing circuit wherein comprises:
(1), receives the data latches (U of A/D translation data
13, U
14);
(2), inside has the single-chip microcomputer (U of memory under program
28);
(3), provide the crystal oscillating circuit of clock signal, comprise electric capacity (C to single-chip microcomputer
22, C
21) and crystal oscillator body (XTAL
1), pulse amplifying circuit wherein comprises:
(1), amplify "+" amplifying circuit of phase pulse comprises diode (D to A
1), resistance (R
1, R
2) and triode (N
1);
(2), amplify "+" amplifying circuit of phase pulse comprises diode (D to B
2), resistance (R
3, R
4) and triode (N
2);
(3), amplify "+" amplifying circuit of phase pulse comprises diode (D to C
3), resistance (R
5, R
6) and triode (N
3);
(4), amplify "-" amplifying circuit of phase pulse comprises diode (D to A
4), resistance (R
7, R
8) and triode (N
4);
(5), amplify "-" amplifying circuit of phase pulse comprises diode (D to B
5), resistance (R
9, R
10) and triode (N
5);
(6), amplify "-" amplifying circuit of phase pulse comprises diode (D to C
6), resistance (R
11, R
12) and diode (N
6);
Controllable silicon power circuit wherein comprises:
(1) phase of the A in the three-phase alternating current loop two controllable silicons ("+A " and " A ");
(2) phase of the B in the three-phase alternating current loop two controllable silicons ("+B " and " B ");
(3) phase of the C in the three-phase alternating current loop two controllable silicons ("+C " and " C ").
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107054A CN1050474C (en) | 1996-07-12 | 1996-07-12 | Electric machine non-linear exciter automatic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107054A CN1050474C (en) | 1996-07-12 | 1996-07-12 | Electric machine non-linear exciter automatic controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1143857A CN1143857A (en) | 1997-02-26 |
| CN1050474C true CN1050474C (en) | 2000-03-15 |
Family
ID=5119493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96107054A Expired - Fee Related CN1050474C (en) | 1996-07-12 | 1996-07-12 | Electric machine non-linear exciter automatic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050474C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384081C (en) * | 2005-12-12 | 2008-04-23 | 天津理工大学 | DSP-based digital excitation controller data acquisition and processing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063170A (en) * | 1992-01-06 | 1992-07-29 | 清华大学 | Fully digital type non-linear excitation controlling device |
| CN1021001C (en) * | 1988-11-07 | 1993-05-26 | 通用电气公司 | Potential source excitation system with voltage and current adjustment |
| CN1077574A (en) * | 1992-03-18 | 1993-10-20 | 杨泰和 | Dynamic current feedback exciting type DC motor |
-
1996
- 1996-07-12 CN CN96107054A patent/CN1050474C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021001C (en) * | 1988-11-07 | 1993-05-26 | 通用电气公司 | Potential source excitation system with voltage and current adjustment |
| CN1063170A (en) * | 1992-01-06 | 1992-07-29 | 清华大学 | Fully digital type non-linear excitation controlling device |
| CN1077574A (en) * | 1992-03-18 | 1993-10-20 | 杨泰和 | Dynamic current feedback exciting type DC motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1143857A (en) | 1997-02-26 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20000315 |