GB1483201A - Inverter arrangements - Google Patents

Inverter arrangements

Info

Publication number
GB1483201A
GB1483201A GB39911/74A GB3991174A GB1483201A GB 1483201 A GB1483201 A GB 1483201A GB 39911/74 A GB39911/74 A GB 39911/74A GB 3991174 A GB3991174 A GB 3991174A GB 1483201 A GB1483201 A GB 1483201A
Authority
GB
United Kingdom
Prior art keywords
trapezoidal
individual
phase
inverters
transformer
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.)
Expired
Application number
GB39911/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1483201A publication Critical patent/GB1483201A/en
Expired legal-status Critical Current

Links

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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/49—Combination of the output voltage waveforms of a plurality of converters

Abstract

1483201 Inverting SIEMENS AG 12 Sept 1974 [21 Sept 1973] 39911/74 Heading H2F A three-phase inverter arrangement comprises six single-phase inverters arranged to produce periodic voltages of the same frequency and substantially identical trapezoidal waveforms differing in phase, the trapezoidal waveforms having rise and fall times in the range 25/360 to 36/360 of the period and produced by the relatively slow charge and discharge of the commutating capacitor of the individual inverters from the D.C. supply. The trapezoidal waves from the individual inverters are combined to provide a substantially sinusoidal three-phase output. As shown in Fig. 2, each individual inverter 1 ... 6 includes the centre-tapped primary of a respective transformer a ... f having the secondaries connected as shown to terminals x, y, z of a synchronous motor or data-processing installation. Fig. 4 (not shown) depicts a graph relating the total harmonic distortion in the substantially sinusoidal combined output of the individual inverters to the electrical angle occupied by the linear rise or fall times of the trapezoidal waveform from the individual inverters and shows that if the angle is 15 degrees the distortion is at a minimum of approximately 1%. Each individual inverter is as shown in Fig. 5 and comprises a pair of thyristors n1, n2 arranged to be alternately conductive so as to switch the current I L in inductor v alternately through the two halves of the centre-tapped primary of transformer Tr. The turning on of either thyristor n1 or n2 discharges the commutating capacitor C substantially linearly through the conductive thyristor and thus provides the linear substantially slow rise and fall of the trapezoidal output waveform. Circulating currents are controlled by free-wheeling diodes n11, n12, n21, n22 connected to tappings A1, A2 on the transformer Tr. The currents on the A.C. side are monitored and combined to provide a signal Ia which is compared at S with the inductor current I 1 so that in the ease of an overload surge, triac T is turned on, connecting C1 to change the value of the commutating capacitor C.
GB39911/74A 1973-09-21 1974-09-12 Inverter arrangements Expired GB1483201A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2347646A DE2347646C3 (en) 1973-09-21 1973-09-21 Three-phase inverter arrangement

Publications (1)

Publication Number Publication Date
GB1483201A true GB1483201A (en) 1977-08-17

Family

ID=5893316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39911/74A Expired GB1483201A (en) 1973-09-21 1974-09-12 Inverter arrangements

Country Status (7)

Country Link
JP (1) JPS5058531A (en)
CH (1) CH570735A5 (en)
DE (1) DE2347646C3 (en)
FR (1) FR2245124A1 (en)
GB (1) GB1483201A (en)
IT (1) IT1021489B (en)
SE (1) SE394778B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1017382A3 (en) * 2006-12-27 2008-07-01 Atlas Copco Airpower Nv METHOD OF SENDING A LOAD WITH A PRINCIPALLY INDUCTIVE CHARACTER AND A DEVICE THAT APPLIES SUCH METHOD.
US9768710B2 (en) 2013-01-11 2017-09-19 General Electric Technology Gmbh Converter
US9847737B2 (en) 2013-12-23 2017-12-19 General Electric Technology Gmbh Modular multilevel converter leg with flat-top PWM modulation, converter and hybrid converter topologies

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5368020U (en) * 1976-11-11 1978-06-08
FR2641912B1 (en) * 1989-01-19 1991-03-22 France Etat Armement METHODS AND DEVICES FOR GENERATING A PERIODIC SINUSOIDAL VOLTAGE AMPLITUDE-BASED VOLTAGE FROM A CONTINUOUS VOLTAGE
EP0390184B1 (en) * 1989-03-31 1993-06-02 Kabushiki Kaisha Toshiba Improvements in variable-voltage & variable-frequency power converter
US5355296A (en) * 1992-12-10 1994-10-11 Sundstrand Corporation Switching converter and summing transformer for use therein

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1017382A3 (en) * 2006-12-27 2008-07-01 Atlas Copco Airpower Nv METHOD OF SENDING A LOAD WITH A PRINCIPALLY INDUCTIVE CHARACTER AND A DEVICE THAT APPLIES SUCH METHOD.
WO2008077203A2 (en) * 2006-12-27 2008-07-03 Atlas Copco Airpower, Naamloze Vennootschap Method for controlling a load with a predominantly inductive character and a device applying such a method
WO2008077203A3 (en) * 2006-12-27 2008-08-14 Atlas Copco Airpower Nv Method for controlling a load with a predominantly inductive character and a device applying such a method
US8179066B2 (en) 2006-12-27 2012-05-15 Atlas Copco Airpower, Naamloze Vennootschap Method for controlling a load with a predominantly inductive character and a device applying such a method
CN101569084B (en) * 2006-12-27 2013-03-20 艾拉斯科普库空气动力股份有限公司 Method for controlling a load with a predominantly inductive character and a device applying such a method
US9768710B2 (en) 2013-01-11 2017-09-19 General Electric Technology Gmbh Converter
US9847737B2 (en) 2013-12-23 2017-12-19 General Electric Technology Gmbh Modular multilevel converter leg with flat-top PWM modulation, converter and hybrid converter topologies

Also Published As

Publication number Publication date
CH570735A5 (en) 1975-12-15
DE2347646C3 (en) 1980-07-17
IT1021489B (en) 1978-01-30
SE7411870L (en) 1975-03-24
DE2347646B2 (en) 1979-10-31
DE2347646A1 (en) 1975-04-17
JPS5058531A (en) 1975-05-21
FR2245124A1 (en) 1975-04-18
SE394778B (en) 1977-07-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee