TH43384A3 - High current welding power supply - Google Patents

Abstract

DC60 (14/03/43) Welding power supply with welding current in continuation of the ready current pulse. With the highest current level and the state closed behind Current pulses that pass through a series circuit consisting of Inductance and electrode in connection with the workpiece There will be a power supply consisting of (a) an inverse sector with an input connected to the power source. The first connector is in electrode condition when inversely released, second connector in electrode condition when inversely released. And controlling the signal generation to Close the inverse and eliminate the secondary current, move the current pulse to the closed state, and (b) a power switching sector consisting of a transistor switch and conditionally conducting current from the terminal. The first While the first logical signal is generated And conditions that do not block the flow of current while Where the second logical signal is generated The updates will contain Sensor for measuring the value of a moment Of welding current A comparator for producing a low current signal when the current is direct. The selected value is below the maximum current level. And a circuit or program used to generate the second logic signal While the low current signal is produced after the closed signal generator With a switch that is The transistor switches from a conduction condition to a non-conducting condition when a welding current is present. Match the selected value The welding power source with the welding current in succession of the ready pulse current. With the highest current level and the state closed behind Current pulses that pass through a series circuit consisting of Inductance and electrode in connection with the workpiece There will be a power supply consisting of (a) an inverse sector with an input connected to the power source. The first connector is in the electrical state when released, the second connected to the electrode when the inverse is released. And controlling the signal generation to Close the inverse and eliminate the secondary current, move the current pulse to the closed state, and (b) the power switching sector consisting of a transistor switch and with a conduction condition from the step current. The first While the first logical signal is generated And conditions that do not block the flow of current while Where the second logical signal is generated The updates will contain Sensor for measuring the value of a moment Of welding current A comparator for producing a low current signal when the current is direct. The selected value is below the maximum current level. And a circuit or program used to generate the second logic signal While the low current signal is produced after the closed signal generator With a switch that is The transistor switches from a conduction condition to a non-conducting condition when a welding current is present. Match the selected value

Claims (2)

1. In a welding power source with a welding current in continuation of a graded current pulse. Peak current and the state closed behind Current pulses that pass through a series circuit containing an inductor And electrodes in connection with the workpiece Power supply with inverse sector to its connected input. With power supply The first connector that meets the first electrode condition when the inverse is released. The second connector that is straight Second electrode condition when released inversely And control signal generation, shutdown, inversion and eliminate Current from the terminal, the current pulse is shifted to the closed state, and the power switching sector consisting of a switch It is a transistor and has a condition in which it conducts current from one connector at the time of its generation. First logical signal And the non-conduction condition, blocking the current while a second rational signal is generated. A detector for measuring the moment of a welding current, a comparator for producing a low current signal when the current is at a lower selected value. Maximum current level And a circuit or program for generating a second logic signal while being produced Low current signal after generator is closed. With a switch that is a transistor will switch from The condition that leads to the non-conduction condition when the welding current is at the selected value. 2. Adjustment according to claim 1, the power supply will be a triple power supply. Phase 3. Enhancement As stated in claim 2, the inverse consists of a network of switches. Ching controlled by a pulse width modulator operating at a frequency in excess of 18 kHz. 4. The improvement stated in claim 3, the current pulse is less than 400 Hz. 5. Enhancement as stated in claim 1, the inverse will consist of the switch network. Ching regulated by a pulse width modulator operating at frequencies in excess of 18 kHz. 6. Adjustment according to claim 5, the current pulse is less than 400 Hz. 7. Modifications As stated in claim 1, the current pulse is less than 400 Hz. 8. The modifications stated in claim 1, the inverse sector, shall be in conjunction with Output transformer The input with the primary winding supports the high-frequency current pulse and the secondary winding that transmits the current pulse to the terminal 9. The improvement as stated in claim 1 is the current pulse. All will have an electrode condition. As set out, 1 0. The enhancements described in claim 1, the continuation of the pulse, will include: With the alternation of pulses between the positive current pulse and the negative current pulse 1 1. Enhancement As stated in claim 10, the power supply will be a three-phase power supply. 1 2. Enhancement as stated in claim 10, the inverse will consist of a network Switching controlled by a pulse width modulator operating at frequencies in excess of 18 kHz. 1 3. The modifications stated in claim 12, the current pulses are less frequency. Over 400 Hz. 1 4. Enhancement As stated in claim 10, the pulse current is less than 400 Hz. 1 5. The modifications as described in claim 10 are It consists of a method for generating positive and negative pulses and modulation of pulse frequency 1 6. The improvement stated in claim 15, the pulse current has a less frequency. 400 Hz. 1 7. The enhancements stated in claim 10 will include a method for adjusting the term. The relative time between positive and negative current pulses 1 8. The enhancements specified in claim 17 consist of a method for generating positive and negative pulses and a method. Adjust the frequency of the pulse 1 9. Enhancement As stated in Claim 18, the pulse current is less than 400 Hz. 2 0. Modulation as specified in the claim. At 17, the current pulse has a frequency less than 400 Hz. 2. 1. The modifications stated in claim 10 will consist of a modulation method. The amplitude of the positive and negative current pulses 2. 2. The adjustments specified in claim 21 will consist of the method of modulation. The time correlated between positive and negative current pulses 2 3. The improvements stated in claim 22, the current pulses have a frequency less than 400 Hz. 2 4. The modifications are specified. In claim 21, the current pulse is less than 400 Hz. 2 5. The modifications stated in claim 1, the selected current value is less than 200 amperes 2. 6. Modifications As stated in claim 25, the selected current rating will be in the range of 100-150 amperes. 2. 7. Enhancements as stated in claim 25 are Power Supply. The inverse will be a three-phase power supply. 2. 8. Enhancement As stated in claim 25, the inverse will consist of a network. Switching controlled by a pulse width modulator operating at frequencies in excess of 18 kHz. 2. 9. Enhancement according to claim 25, the current pulse is less frequency. More than 400 Hz. 3 0. The modifications stated in claim 25, the pulse continuation will include With the alternation of pulses between positive current pulses and negative current pulses 3 1. In the welding power source used to generate the continuity of the positive and negative current pulses. Inverse with A positive current pulse passes through the segment of the first inductor and has the electrode in series with the transistor-first switching workpiece, while the first command signal is supported. And a negative current pulse at Through the second segment of the inductor and the electrode. Switching off the second transistor in While the second command signal is supported The updates will contain Control device with a reverse method Back for use with switching between the first and second signal. To reverse the polarity Of current pulse And the reduction method for closing the inverse prior to the reversal of the command signal. 3. 2. Adjustment as stated in claim 31, the delay method consists of the Determining when the pulse current will fall to the current of the selected value. And how to stimulate the method Back when the current falls to the selected value 3 3. The modifications stated in claim 32, the inverse consists of a network. Switching controlled by a pulse width modulator operating at frequencies in excess of 18 kHz. 3 4. The modifications stated in claim 32, the current pulses are less frequency. Over 400 Hz. 3 5. The modifications stated in claim 32, the selected current value will be less than 200 amperes. 3 6. The modifications as stated in claim 35 are provided. The selected current is in the range of 100-150 amperes. 3 7. The improvements stated in claim 31, the inversion consists of an inputs that Connected to a multi-phase power supply 3. 8. Enhancement As noted in claim 31, the segment of the inductor will be Part of a single inductor 3 9. Enhancement As stated in claim 31, the inverse consists of a network. Switching controlled by a pulse width modulator operating at frequencies in excess of 18 kHz. 4 0. The modifications stated in claim 39, the current pulses are less frequency. Over 400 Hz. 4 1. Modifications As stated in claim 31, the pulse current is less than 400 Hz. 4 2. The modifications as stated in claim 31 are as follows: The selected current is less than 200 amperes. 4 3. The improvements stated in claim 42, the selected current will be in the range 100-150 amperes. As stated in claim 31, the reverse method would be a flip-flob circuit with a logic Q as the first signal and a logical Q as the second signal. 4. 5. Enhancement as indicated. In claim 44, the delay method includes: A logic network in which the output of the oscillator is combined with one of the said logic signals. In order to close the body Therefore, the delay method will consist of: 4 6. The modifications stated in claim 31, the delay method will consist of: A logic network with an oscillator output combined with one of the above command signals. In order to close the body 4 7. Improving as stated in claim 31, the delay method will consist of the method. Detection of welding current at a time And how to stimulate the reverse method when the current is valued 4 8. Method for generating a welding current in the continuation of the pulse current with the highest current level. And the state closes behind Current pulses that pass through a series circuit include inductors and electrodes with Connect with the workpiece A power supply with an inverse sector with an input connected to the power supply. The first connector that meets the first electrode condition when the inverse is released. The second connector in the condition of the second electrode. When launching inversion And control of the signal generation, shutdown, inversely, and eliminate the current from the terminal to Move the current pulse to the closed state. And the switching power sector consisting of a transistor switch And there is a condition in which the current is passed from terminal one while the first rational signal is generated and the non-conduction condition is blocking the current while the second rational signal is generated. This method consists of (a) measuring the moment of the welding current, (b) producing a low current signal when the selected moment current is lower than the maximum current, and (c) generating a logic signal. Second, while the low current signal is produced after the Signal generator off A transistor switches from a conduction condition to a non-conducting condition. Conducting when the welding current is at the selected value 4 9. Method According to claim 48, the power supply will be a three-phase power supply 5. 0. Method as obtained As stated in claim 48, the inverse consists of a switching network that Controlled by a pulse width modulator operating at frequencies in excess of 18 kHz. 5 1. Method as described in claim 48, current pulses are less than 400 Hz. 5 2. The method described in claim 48, the continuation of the pulse consists of: The alternating pulse between the positive current pulse and the negative current pulse. 5. 3. The methods specified in claim 48 are composed of 5. 4. Methods as specified in clause 48. Hold the 48th right, the selected current will be less than 200 amperes 5 5. Methods outlined in claim 54, the selected current value will be in the range 100- 150 amperes 5 6 A method for generating positive and negative current pulses. Inverse with current pulse Add it through the first inductor segment and have the electrodes in series with the workpiece. Switch off at It is the first transistor while having support for the first order signal and the negative current pulse passing through the segment. Fixture of the second inductor and the electrode Switching off the second transistor while Second command signal support This method consists of (a) switching between the first and second instruction signals, reversing the polarity of the current pulse, and (b) the inverse closure before the command signal switch 5. 7. The methods described in claim 56 also include (c) determining when the pulse current will reach the selected value current and (d) the Encourage a reverse action when the current drops to the selected value. 5 8. The AC high current arc welding power source located at the electrode and the workpiece is grounded. The power supply consists of an inductor for converting AC voltage to a DC source with a maximum current of at least 200 amperes with positive connectors, negative connectors, grounding connectors, and a Swiss network. Flushing output includes a switch that is a transistor sorted in series with the positive terminal segment of the first inductor. Electrode and workpiece to ground The switch is the second transistor in sequence. Serial with negative connector Second segment of inductor Electrode and workpiece to ground and control methods Switching on the first switch and turning off the second switch at the point where the first switch is reversed. And turn on the switch at Two and the first switch off at the point where the second switch is reversed And generating high welding current AC with positive and negative current pulses to the electric arc welding The inverse closes have low inductance and inverse shutdown methods while supporting inverse shutdown signals. And control methods for generating inverse shutdown signals Before the return point 5 9. The welding power source described in claim 58 consists of a method for setting the reverse point. When the selected current value is less than 200 amperes 6 0. The welding power supply specified in claim 59, the positive and negative current pulses are less than 400 Hz. 1. The welding power source as described in claim 58, the inverse consists of a pulse width modulated switching network operating at frequencies in excess of 18 kHz. Welding power source As described in claim 61, the positive and negative pulses are less than 400 Hz. 6 3. Welding power sources as specified in the wrist. Right 62, the maximum inverse current is greater than 1000 amperes 6 4. Welding power supply As specified in claim 61, the positive and negative current pulses are less than 400 Hz. 6 5. Welding power source As described in claim 58, the positive and negative pulses are less than 400 Hz. 6 6. Welding power sources as indicated. In claim 65, the maximum current of itself The inverse is greater than 1000 amperes. 6 7. The welding power source described in claim 65 consists of the pulse frequency modulation method. 6 8. The welding power source as obtained. The modifications identified in claim 58 will consist of the pulse frequency modulation method. 6. 9. The modifications identified in claim 58 will include modulation methods. The duration of the correlation between positive and negative current pulses 7 0. The adjustments specified in claim 58 will consist of modulation methods. Time relative to positive and negative 7 current pulses 1. Modifications As noted in claim 58, the inverse contains an input. The input to be connected to a power supply with multiple phases 7. 2. Adjustment As noted in claim 58, the segment of the inductor will be Part of a single inductor