GB1504605A - Control of rotary-field machines - Google Patents

Control of rotary-field machines

Info

Publication number
GB1504605A
GB1504605A GB32365/75A GB3236575A GB1504605A GB 1504605 A GB1504605 A GB 1504605A GB 32365/75 A GB32365/75 A GB 32365/75A GB 3236575 A GB3236575 A GB 3236575A GB 1504605 A GB1504605 A GB 1504605A
Authority
GB
United Kingdom
Prior art keywords
stator
controlled
frequency
deriving
vector
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
GB32365/75A
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 GB1504605A publication Critical patent/GB1504605A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
    • H02P21/10—Direct field-oriented control; Rotor flux feed-back control

Abstract

1504605 Control of A.C. motors; inverting SIEMENS AG 1 Aug 1975 [3 April 1975] 32365/75 Addition to 1432268 Headings H2F and H2J In apparatus as described in parent Specification, for generating in a rotary field electrical machine an effective stator current vector which for a predetermined interval of time lies between two adjacent ones of discrete positions, the apparatus being controlled by a first signal generator for generating a first signal SZf and a second signal generator of higher frequency SZp, a comparator 8 and a changeover switch 6, 7 responsive to the instantaneous values of the first and second signals for switching the apparatus so as to produce said two discrete angular positions of the stator current vector. As described, the asynchronous motor 1 is controlled by an inverter having thyristors S1 . . . S6, diodes D1 . . . D6, and commutating capacitors C1 . . . C6. The inverter is controlled by D.C. from a rectifier GR. A voltage Un proportional to stator frequency is supplied to a threshold switch 5 which ensures that, when the stator frequency is above a predetermined value, the change over switches 4 are in the upper position so that a continuous sequence of pulses is supplied to the gates g1 . . . g6 of the thyristors S1 . . . S6. At low stator frequencies, change over switches 4 are in their lower positions and the gate pulses are sequentially changed by a set of change over switches 6 controlled by a threshold switch 7 in dependence on the sum or difference of a stator frequency sawtooth signal SZf and a higher frequency sawtooth signal SZp. This arranges that the stator vector continually oscillates about the effective position. Figs. 4, 5, 7 (not shown) relate to arrangements of integrators and threshold switches for generating the high and low-frequency sawteeth and includes two six-stage ring counters for deriving the sequential gate pulses A1 . . . A6 and B1 . . . B6, Fig. 8 show an alternative method of deriving the gate pulses by utilizing the sin and cos components of a continuously rotating preset control vector operating on threshold switches and gates. Figs. 10 . . . 12 (not shown) relate to combinations of gates and multipliers for deriving the stator frequency sawtooth voltage from the said preset control vector.
GB32365/75A 1975-04-03 1975-08-01 Control of rotary-field machines Expired GB1504605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2514557A DE2514557C3 (en) 1975-04-03 1975-04-03 Device for controlling the position of the stator current vector of a converter-fed induction machine

Publications (1)

Publication Number Publication Date
GB1504605A true GB1504605A (en) 1978-03-22

Family

ID=5943004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32365/75A Expired GB1504605A (en) 1975-04-03 1975-08-01 Control of rotary-field machines

Country Status (10)

Country Link
JP (1) JPS51122720A (en)
AT (1) AT341046B (en)
BE (1) BE832608R (en)
CA (1) CA1037557A (en)
CH (1) CH589968A5 (en)
DE (1) DE2514557C3 (en)
FR (1) FR2306564A2 (en)
GB (1) GB1504605A (en)
SE (1) SE410683B (en)
ZA (1) ZA755222B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704533C2 (en) * 1977-02-03 1986-06-05 Siemens AG, 1000 Berlin und 8000 München Device for controlling the position of the stator current vector of a three-phase machine fed by a converter with controllable valves and with impressed intermediate circuit current
DE2726410A1 (en) 1977-06-09 1978-12-21 Licentia Gmbh METHOD FOR DAMPING THE POLE WHEEL SUSPENSION OF ROTARY FIELD MACHINES
DE2750020A1 (en) * 1977-11-05 1979-05-10 Licentia Gmbh AC-commutated static converter circuit - has diodes and circuit turning thyristor off independently of input voltage
DE2818933C2 (en) * 1978-04-28 1982-06-16 Siemens AG, 1000 Berlin und 8000 München Control method for an asynchronous machine and circuit arrangement for carrying out the method
JPS6018198B2 (en) * 1978-12-06 1985-05-09 株式会社東芝 Inverter control device
DE2918083C2 (en) * 1979-05-04 1986-09-18 General Electric Co., Schenectady, N.Y. Speed control device for an AC motor
DE2954430C2 (en) * 1979-05-04 1986-10-30 General Electric Co., Schenectady, N.Y. Reversible static speed control device for an AC motor
DE3131361A1 (en) * 1981-08-07 1983-02-24 Siemens Ag METHOD AND DEVICE FOR CONTROLLING THE LOAD CURRENT OF A POLE INVERTER
US4414609A (en) * 1982-10-08 1983-11-08 Sylvan R. Shemitz And Associates, Inc. Luminaire for a visual display terminal
DE3280229D1 (en) 1982-10-18 1990-09-20 Elin Union Ag METHOD FOR SETTING THE STATE FLOW VECTOR.
DE3411572C2 (en) * 1984-03-29 1986-12-04 Joetten, Robert, Prof.Dr.-Ing., 6100 Darmstadt Method for regulating an asynchronous machine fed by a current-impressing intermediate circuit converter
CN114274581B (en) * 2021-12-29 2022-09-30 金丰（中国）机械工业有限公司 Electric energy management system of servo press

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT234221B (en) * 1962-01-12 1964-06-25 Licentia Gmbh Arrangement for energy transfer
US3670235A (en) * 1970-09-25 1972-06-13 Borg Warner Motor control system with compensation for low-frequency variations in motor energizing voltage
DE2236763C3 (en) * 1972-07-26 1980-04-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and arrangement for controlling the position of the stator current vector of a three-phase machine fed by a converter with impressed intermediate circuit current

Also Published As

Publication number Publication date
SE410683B (en) 1979-10-22
FR2306564B2 (en) 1979-07-20
ATA536475A (en) 1977-05-15
DE2514557B2 (en) 1977-03-10
AT341046B (en) 1978-01-10
CH589968A5 (en) 1977-07-29
BE832608R (en) 1975-12-16
FR2306564A2 (en) 1976-10-29
CA1037557A (en) 1978-08-29
SE7601371L (en) 1976-10-04
JPS51122720A (en) 1976-10-27
ZA755222B (en) 1976-07-28
JPS562518B2 (en) 1981-01-20
DE2514557C3 (en) 1981-09-24
DE2514557A1 (en) 1976-10-14

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Legal Events

Date Code Title Description
PS Patent sealed