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inverter-based power sources

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005565
EISBN: 978-1-62708-174-0
... input voltage, three-phase input machines, inverter-based power sources, short arc gas metal arc welding power sources, and multiple arc power sources are discussed. The article also presents the factors to be considered when selecting a power source. arc welding inverter-based power sources...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005590
EISBN: 978-1-62708-174-0
... in sophisticated, lightweight power supplies. Transistorized dc power supplies are common. There are newer inverter-based power sources that will deliver dc, pulsed dc in addition to sine-wave ac, and square-wave ac. The output frequency can also be varied ( Fig. 12 ). Higher frequencies can be beneficial...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005836
EISBN: 978-1-62708-167-2
... Configuration of a diode, showing no resistance to current flow in one direction and infinite resistance in the other Fig. 30 Active unity power factor ac/dc converter circuit, for actively reducing current harmonics Fig. 24 Voltage source inverter (VSI) half-bridge with split tuning...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001337
EISBN: 978-1-62708-173-3
... of the power source, that is, its ability to “follow” a fast command signal, such as a pulse program. Magnetically based machines are generally not fast enough to faithfully reproduce a pulsed GMAW control signal and deliver it at high currents to the weld. When a better response is required, inverter-based...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001356
EISBN: 978-1-62708-173-3
... ), Nov 1992 , p 38 – 39 4. Welding Handbook , 8th ed. , Vol 2 , American Welding Society , 1991 , p 74 – 107 5. Byrd T. , Inverter Power Sources: An Efficient Alternative , Weld. J. , Vol 72 ( No. 1 ), Jan 1993 , p 37 – 40 6. Sadek A.A. , Ushio M...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005888
EISBN: 978-1-62708-167-2
... Hz). Source: Ref 18 Fig. 26 Four-modular billet heating system. Source: Ref 2 Fig. 27 Power and coil modules can be combined inline to form a heating line and added or subtracted to meet changing production needs. Courtesy of Inductoheat, Inc. Fig. 28 Application...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006515
EISBN: 978-1-62708-207-5
... cleaning and pulsed welding with an inverter power source will make the process more tolerant of surface oxide and contamination. Anodizing aluminum creates a high surface resistance and should not be performed until after the studs have been welded; the studs also benefit from anodizing...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005566
EISBN: 978-1-62708-174-0
... welding current exceeds 1000 amps. Alternating current is frequently used when arc blow is encountered, including in multiple-electrode applications. Inverter and software-based power sources with digital control can provide a very stable square wave output that allows the user to control...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005583
EISBN: 978-1-62708-174-0
... The first solid-state induction welding machine was installed and operated at the Société Meusienne in France. This equipment operated at a welding frequency of approximately 100 kHz. 1990—Solid-state inverter power sources Solid-state inverters replaced vacuum-tube oscillators in many new equipment...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005867
EISBN: 978-1-62708-167-2
... produces such patterns ( Fig. 34b ) with the use of lower power densities and lower-frequency inverters. Fig. 34 (a) Large helical gear induction surface hardened using TSH. (b) Etched sample. Courtesy of ERS Engineering, Inc. Application of TSH is not only limited to gears and gearlike...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003287
EISBN: 978-1-62708-176-4
.... (a) Behavior exhibited by some solid solution strengthened materials characterized by an inverted primary transient. (b) Behavior of some other materials that combines a normal transient with an inverted transient Current knowledge of the mechanisms that control creep deformation is based...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003173
EISBN: 978-1-62708-199-3
..., the solid state power supplies used in these furnaces have efficiencies approaching 97%. The power supplies are computer controlled to obtain maximum efficiency during melting. Two types of inverters are used, series and parallel. The furnace and compensating capacitor bank form part of a resonance circuit...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005899
EISBN: 978-1-62708-167-2
... (not visible in the picture) at the rear of the wall separating the box are easily accessible from there. On the other side of the passageway is the soundproofed switchgear room with the two capacitor banks of the Twin-Power power supply, the converter with two inverters, and four smoothing reactors. Behind...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005924
EISBN: 978-1-62708-166-5
... components used for load matching, such as transformers and capacitors, are located in the heat station. Heat stations may be either built into the power supply or furnished separately. Fig. 15 Load matching/impedance matching. Source: Ref 9 Tuning, or load matching, requires the use...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005843
EISBN: 978-1-62708-167-2
... transformers, capacitors, and sometimes inductors are connected between the output of the power supply and the induction coil. The adjustment of these components generally is referred to as load matching or load tuning. In earlier years, when motor generators were the primary source...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003754
EISBN: 978-1-62708-177-1
...” or “inverted”; these terms refer to the orientation of the light path to plane-of-polish of the specimen during observation ( Fig. 1 ). Because each configuration has certain advantages and disadvantages, selection generally is based on personal preference. Fig. 1 Light paths in (a) an upright incident...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005897
EISBN: 978-1-62708-167-2
...-to-coil load matching capabilities, helping to operate in a specified frequency range and avoid reaching output limits of an inverter. One quick way to estimate a rough order of magnitude of the required workpiece power ( P w ) is based on an average value of specific heat ( c ) of the heated material...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001354
EISBN: 978-1-62708-173-3
... source can be the “static” type in which incoming utility power (120 to 480 V) is reduced to welding voltage by a transformer or solid-state inverter. It could also be the “rotating” type in which the welding power is provided by a rotating generator driven by a motor or internal combustion engine...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005895
EISBN: 978-1-62708-167-2
... of the induction crucible furnace Fig. 2 Design and principle of the channel induction furnace. Source: RWE Energie AG The first technically feasible induction furnaces were based on the principle of the channel furnace. Milestones were the first patent obtained by de Ferranti in 1887...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005559
EISBN: 978-1-62708-174-0
..., and power sources. medium-frequency direct current system power supplies resistance welding single-phase control system HEAT DURING RESISTANCE WELDING is generated by the flow of electrical current through the parts being joined. The main process variables are welding current, welding time...