WO2005013472A1 - サイリスタコンバータ装置のコンデンサ充電制御方法 - Google Patents
サイリスタコンバータ装置のコンデンサ充電制御方法 Download PDFInfo
- Publication number
- WO2005013472A1 WO2005013472A1 PCT/JP2004/010406 JP2004010406W WO2005013472A1 WO 2005013472 A1 WO2005013472 A1 WO 2005013472A1 JP 2004010406 W JP2004010406 W JP 2004010406W WO 2005013472 A1 WO2005013472 A1 WO 2005013472A1
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- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- thyristor
- capacitor
- curve
- firing
- 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.)
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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
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/125—Avoiding or suppressing excessive transient voltages or currents
Definitions
- the present invention relates to a capacitor charging control method for a thyristor converter that converts an AC voltage to a DC voltage.
- a resistor In a conventional converter device, a resistor must be inserted into the power supply line to limit the inrush current flowing by rectification by the diode bridge. However, the capacitor is still charged, and the AC power supply is switched from the state. When the power is turned on, a high current suddenly starts flowing. In order to suppress this current, the resistance inserted into the power supply line must be increased, but doing so increases the charging time. In order to avoid this, charging control using a thyristor can be mentioned. The conventional method measures the firing timing of the thyristor by measuring the period of the AC power supply and estimating the phase.
- the thyristor firing angle is calculated by detecting the AC power supply phase, and the thyristor is fired with a certain voltage difference by comparing the AC voltage and the capacitor voltage when firing the thyristor.
- a method see, for example, Patent Document 1.
- the procedure of charging the capacitor by controlling the firing angle by detecting the phase of the AC power supply and comparing the AC voltage and the capacitor voltage has been adopted.
- Patent Document 1 JP-A-4-26372
- the conventional capacitor charging control method employs a procedure of charging the capacitor by controlling the firing angle by finding the voltage difference between the AC voltage and the capacitor voltage using phase detection using the voltage detection as it is, and
- the power supply detection voltage is distorted, accurate power supply phase detection and voltage detection cannot be performed, and the voltage difference does not become constant, so that the thyristor is fired at an incorrect timing.
- the connected power source impedance and There was also a problem that the charging time became longer due to variations in charging time due to the sensor capacity and thyristor firing control using one phase.
- the present invention has been made in view of such a problem, and detects a power supply voltage for three phases, calculates a line voltage from the three-phase detection voltage force, and generates an erroneous ignition due to a distortion of the power supply voltage. It is an object of the present invention to provide a method capable of shortening the capacitor charging time while avoiding noise and keeping the inrush current constant.
- the present invention is as follows.
- a thyristor that rectifies the AC voltage a CPU that outputs an on / off control signal to the thyristor driver to drive the thyristor, a voltage detection sensor that measures the AC voltage and the capacitor charging voltage, and a capacitor connected to the DC circuit.
- the capacitor charging control method for a thyristor converter device provided with a thyristor converter the AC voltage and the capacitor charging voltage are measured by a voltage detection sensor, and a difference voltage between the thyristor firing phase voltage and the capacitor charging voltage is obtained.
- the thyristor is fired only when the arc phase voltage becomes lower than a specific voltage obtained from the difference voltage.
- the ignition start interval of the thyristor is equal to or longer than a time obtained by subtracting a predetermined time from the previous ignition start interval, 1 is subtracted from the previous ignition start counter value so that the previous ignition start time becomes 1 time longer than the previous ignition start time. It is characterized in that the thyristor is fired earlier in the control cycle. Also, a difference voltage (AV) necessary for obtaining a desired capacitor voltage in the line voltage waveform is obtained.
- AV difference voltage
- the curve c is obtained by adding the voltage ( ⁇ ) necessary and sufficient to obtain the capacitor charging voltage ( ⁇ ).
- the curve b is used in the low region
- the curve d using the curve c is used in the high region.
- the difference between the AC voltage and the capacitor voltage at the start of thyristor firing is set to a voltage value obtained by a cosine curve, so that the inrush current at each thyristor firing is set. Can be kept constant.
- the firing time is changed to a firing time shorter than the previous firing time, thereby causing an error.
- the overcurrent of the rush current due to the arc can be prevented, and the failure of the converter device and the system using the same can be prevented.
- FIG. 1 A block diagram showing a configuration of a thyristor converter device to which the method of the present invention is applied.
- FIG. 2 A detected voltage waveform and a line voltage waveform when the thyristor is off
- FIG. 5 is a flowchart showing a processing procedure of the method of the present invention.
- FIG. 6 is a current circuit diagram of a thyristor converter device to which the method of the present invention is applied.
- FIG. 1 is a block diagram showing a configuration of a thyristor converter device for implementing the method of the present invention.
- 1 is an AC power supply
- 2 is a capacitor
- 3 is a thyristor module
- 4 is a voltage detection circuit
- 5 is a CPU
- 6 is a thyristor driver
- P is a positive DC bus on the output side of module 3
- N is a thyristor.
- a thyristor module 3 as a rectifier, which supplies DC power from a three-phase commercial AC power supply 1 to a capacitor 2.
- the voltage of both the three-phase AC power supply voltage and the capacitor 2 is detected by the voltage detection circuit 4, and the detected voltage signal is AD-converted and input to the CPU 5.
- the CPU 5 performs a predetermined operation based on the voltage detection signal from the voltage detection circuit 4 and outputs a gate pulse signal to the gate of the thyristor module 3 via the thyristor driver 6 to control firing of the thyristor.
- FIG. 2 shows a detected voltage waveform and a line voltage waveform when the thyristor is off in the thyristor converter device, and the upper figure shows a commercial AC detected by the voltage detecting circuit 4 when the N-side thyristor is a diode.
- V and the figure below is the line voltage waveform V calculated by CPU5 using V, V, and V
- Fig. 3 shows the detected voltage waveform, line voltage waveform, capacitor voltage, and PN bus current when the thyristor is fired in the thyristor converter.
- FIG. 4 is a cosine curve used to control the capacitor charging voltage of the present invention.
- V is the capacitor voltage
- ⁇ is the difference between the power supply voltage and the capacitor voltage.
- AV are line voltage peak values.
- Curve a shows the desired capacitor in the line voltage waveform.
- Curve b multiplies curve a by a factor in the V direction
- curve c multiplies curve a by ⁇
- Curve d, curve d takes the lower value of curve b and curve c in the ⁇ direction
- FIG. 5 is a flowchart showing a processing procedure for implementing the present invention in the thyristor converter device. The method of the present invention will be described step by step with reference to FIG.
- FIG. 6 is a current circuit diagram of a thyristor converter device to which the method of the present invention is applied.
- 7 is an AC power supply
- 8 is an inrush current i
- 9 is a reactance L
- 10 is a resistor R
- 11 is a thyristor T
- 12 is a capacitor C.
- the voltage of the commercial AC power supply 1 and the voltage of the capacitor 2 are detected by the voltage detection circuit 4, and the three-phase AC power supply voltage and the capacitor voltage converted by the AZD converter of the CPU are V, V, V, V, respectively. I do. From this detection voltage V, V, V, the line voltage V
- V V, and V are obtained as follows (step 1).
- V V -V
- V V -v
- V V -v
- a three-phase detection voltage waveform and a line-to-line voltage waveform are obtained as shown in FIG.
- the N-side voltage fluctuation and noise are canceled and a positive power supply voltage can be obtained as compared with using the three-phase detection voltage as it is.
- the thyristor must be fired when the line voltage is on the decrease.Therefore, if the AC power supply has a frequency of 50 Hz based on the previous change in the sign of the line voltage of the thyristor firing phase, 1. If the frequency is 67ms or 60Hz, monitor the time for 1.39ms (step 2). After this time has elapsed, the difference voltage ⁇ is obtained using the capacitor voltage V cosine table (step 3).
- FIG. 6 shows how to derive the cosine table.
- the current circuit of the system embodying the present invention is as shown in FIG. 6, and its circuit equation is expressed as follows.
- curve a is the curve obtained by multiplying the line voltage waveform by the difference voltage ⁇ required to obtain the desired capacitor voltage and dividing by the peak value V of the line voltage waveform.
- a curve b is obtained by multiplying the curve a as a basic curve by a coefficient in the capacitor voltage direction. This curve b compensates for the delay in the control calculation by the CPU. In addition, as the line voltage increases, the dvZdt decreases, and as described above, the current increases too much. Therefore, the voltage c is limited by the curve c of the voltage ⁇ which is necessary and sufficient to charge the capacitor.
- the curve d connecting the curves b and c is the target cosine curve.
- Step 4 When the line voltage reaches (Step 4), the thyristor is started to fire (Step 7), and the cycle of monitoring the line voltage of the next firing phase (Step 8) is repeated. Use to increase the capacitor voltage.
- the load factor of the CPU can be reduced.
- the content in the second embodiment is shown by the dotted line in FIG.
- Fig. 3 during thyristor firing, the more the inrush current i flows, the more L'diZdt increases, causing a voltage drop and distortion of the line voltage waveform, and noise superimposed on the detected voltage waveform. In this case, a normal sine wave waveform cannot be obtained. In such a case, the difference voltage ⁇ obtained from the cosine curve and the line voltage
- the line voltage waveform is distorted earlier than normal due to distortion of the line voltage waveform.
- the firing timing of the previous thyristor is stored, and if the calculation result is such that the thyristor is fired at an earlier timing (here, 0.5 ms) (step 5), The thyristor is started to fire (Step 7) at a time (Step 6) earlier than the firing start time of (1) by one control cycle.
- the set value can be determined according to the AC power supply and converter system, the inrush current can be suppressed, the charging time of the capacitor can be adjusted, and it can be applied to inverters using converters.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/341,856 US7368891B2 (en) | 2003-07-30 | 2006-01-30 | Charge control method of capacitor in thyristor converter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003283060A JP4337032B2 (ja) | 2003-07-30 | 2003-07-30 | サイリスタコンバータ装置のコンデンサ充電制御方法 |
| JP2003-283060 | 2003-07-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/341,856 Continuation-In-Part US7368891B2 (en) | 2003-07-30 | 2006-01-30 | Charge control method of capacitor in thyristor converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005013472A1 true WO2005013472A1 (ja) | 2005-02-10 |
Family
ID=34113799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/010406 Ceased WO2005013472A1 (ja) | 2003-07-30 | 2004-07-22 | サイリスタコンバータ装置のコンデンサ充電制御方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7368891B2 (ja) |
| JP (1) | JP4337032B2 (ja) |
| WO (1) | WO2005013472A1 (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120229100A1 (en) * | 2011-03-11 | 2012-09-13 | Renault S.A. S. | Optimized software-driven soft-start algorithm |
| DE102017200428B3 (de) | 2017-01-12 | 2018-06-21 | Carl Zeiss Smt Gmbh | Projektionsbelichtungsanlage sowie Verfahren zum Vermessen eines Abbildungsfehlers |
| US10124680B1 (en) | 2017-06-28 | 2018-11-13 | Lear Corporation | Methods and systems for pre-charging on-board charger of vehicle |
| US10351004B1 (en) | 2018-01-03 | 2019-07-16 | Lear Corporation | Pre-charging DC link capacitor of on-board charger (OBC) using traction battery |
| JP6994686B2 (ja) * | 2018-08-10 | 2022-01-14 | パナソニックIpマネジメント株式会社 | 電力変換装置 |
| CN116418122B (zh) * | 2023-06-12 | 2023-09-08 | 深圳市利业机电设备有限公司 | 一种配电方法、装置及全数字化智能综合配电柜 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426372A (ja) * | 1990-05-17 | 1992-01-29 | Yaskawa Electric Corp | 電源立ち上げ方法 |
| JP2000287452A (ja) * | 1999-03-29 | 2000-10-13 | Shinko Electric Co Ltd | パルス幅変調コンバータ |
| JP2002247760A (ja) * | 2001-02-15 | 2002-08-30 | Toshiba Corp | 直列補償装置の起動方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663943A (en) * | 1970-09-15 | 1972-05-16 | Fuji Electric Co Ltd | Automatic voltage regulating system for a dc load |
| US5075608A (en) * | 1974-06-24 | 1991-12-24 | Erdman David M | Control system, electronically commutated motor system, draft inducer apparatus and method |
| US4234842A (en) * | 1978-04-03 | 1980-11-18 | Westinghouse Electric Corp. | Voltage regulator and flicker compensator |
| JPS6013390B2 (ja) * | 1978-09-04 | 1985-04-06 | 株式会社日立製作所 | 電力変換装置の制御装置 |
| JPS5574389A (en) * | 1978-11-27 | 1980-06-04 | Fanuc Ltd | Drive circuit for permanent magnet type dc motor |
| US4340807A (en) * | 1980-01-10 | 1982-07-20 | Xerox Corporation | Open loop fuser control |
| US4697126A (en) * | 1982-03-19 | 1987-09-29 | General Electric Company | Control method for direct current motor |
| JPS59122372A (ja) * | 1982-12-27 | 1984-07-14 | Toshiba Corp | 電力調整装置 |
| DE3434607A1 (de) * | 1984-09-18 | 1986-03-27 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und vorrichtung zum betreiben eines abschalthyristors |
| US4585982A (en) * | 1984-12-10 | 1986-04-29 | General Electric Company | Third harmonic auxiliary impulse commutation inverter with means for precharging commutation capacitor |
| US5347441A (en) * | 1989-09-18 | 1994-09-13 | Mitsubishi Denki Kabushiki Kaisha | Thyristor converter system with higher harmonics suppression |
| US5343079A (en) * | 1991-02-25 | 1994-08-30 | Regents Of The University Of Minnesota | Standby power supply with load-current harmonics neutralizer |
| JP3382434B2 (ja) * | 1995-09-22 | 2003-03-04 | キヤノン株式会社 | 電池電源の電圧制御装置および電圧制御方法 |
| GB2320814B (en) * | 1996-12-31 | 2000-11-29 | Redcliffe Magtronics Ltd | An apparatus for altering the magnetic state of a permanent magnet |
| SE514964C2 (sv) * | 1999-09-22 | 2001-05-21 | Abb Ab | Förfarande och anordning för styrning av släckvinkeln för en nätkommuterad strömriktare |
-
2003
- 2003-07-30 JP JP2003283060A patent/JP4337032B2/ja not_active Expired - Fee Related
-
2004
- 2004-07-22 WO PCT/JP2004/010406 patent/WO2005013472A1/ja not_active Ceased
-
2006
- 2006-01-30 US US11/341,856 patent/US7368891B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426372A (ja) * | 1990-05-17 | 1992-01-29 | Yaskawa Electric Corp | 電源立ち上げ方法 |
| JP2000287452A (ja) * | 1999-03-29 | 2000-10-13 | Shinko Electric Co Ltd | パルス幅変調コンバータ |
| JP2002247760A (ja) * | 2001-02-15 | 2002-08-30 | Toshiba Corp | 直列補償装置の起動方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060186861A1 (en) | 2006-08-24 |
| JP2005051953A (ja) | 2005-02-24 |
| US7368891B2 (en) | 2008-05-06 |
| JP4337032B2 (ja) | 2009-09-30 |
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