GB1127263A - Improvements in or relating to a system for forming pilot voltages for controlling electronic commutation channels for induction motors - Google Patents

Improvements in or relating to a system for forming pilot voltages for controlling electronic commutation channels for induction motors

Info

Publication number
GB1127263A
GB1127263A GB585/66A GB58566A GB1127263A GB 1127263 A GB1127263 A GB 1127263A GB 585/66 A GB585/66 A GB 585/66A GB 58566 A GB58566 A GB 58566A GB 1127263 A GB1127263 A GB 1127263A
Authority
GB
United Kingdom
Prior art keywords
voltage
phase
motor
pulses
speed
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
GB585/66A
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.)
GOLAY BUCHEL AND CIE
Original Assignee
GOLAY BUCHEL AND CIE
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
Priority claimed from CH12465A external-priority patent/CH435418A/en
Priority claimed from CH1394965A external-priority patent/CH465041A/en
Application filed by GOLAY BUCHEL AND CIE filed Critical GOLAY BUCHEL AND CIE
Publication of GB1127263A publication Critical patent/GB1127263A/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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • 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
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/28—Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/002—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/40—Gating or clocking signals applied to all stages, i.e. synchronous counters
    • H03K23/50—Gating or clocking signals applied to all stages, i.e. synchronous counters using bi-stable regenerative trigger circuits
    • H03K23/54—Ring counters, i.e. feedback shift register counters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

1,127,263. Automatic control of speed. GOLAY BUCHEL & CIE S.A. Jan.6, 1966 [Jan. 6, 1965; Oct.11, 1965], No.585/66. Heading G3R. [Also in Division H2] A polyphase induction motor is energized from a D.C. source by a plurality of transistor bi-stable circuits arranged to produce a stepped waveform approximating to sinusoidal and variable in frequency and/or magnitude. As shown, each phase of a two phase motor is in two halves 171, 172, energized in "push-pull". A stepped pilot voltage Vp1, Fig. 2C (not shown), via transistors P1, T1, T2, T3 initially renders T4 fully conducting and current through M1 builds up gradually (due to inductance of M1); when voltage across series resistors R5 equals that on base of T1, T4 is switched off and current decays (through "fly-wheel device" not shown) until voltage on T1 base is again enough to switch on. Motor current thus oscillates about the instantaneous value of Vp1 and so follows its general shape. Vp1 is switched alternately to energize M1 and M2 by a bi-stable stage B8. B9 operates similarly on the second phase with a pilot voltage Vp2 Fig.2d (not shown). The pilot voltages are produced in a chain of three bi-stable stages Fig. 1 (not shown), which together have eight possible states, and by suitably grading resistors (11-16) these produce eight voltage levels across further resistors (17, 18) which correspond to quarter cycles, and a further bi-stable stage (B7) switches between them to produce the half cycles Vp1 and Vp2. In a phase three version Fig. 6 (not shown), three bi-stable stages are connected in a ring to produce three steps per quarter cycle in each phase (RST), and a motor direction reversing switch (90) is provided. Also, D.C. can be applied to two phases for braking. Triggering pulses for the bi-stable stages are produced by a pick-up, e.g, photo-electric, on the motor shaft, added to which are further pulses corresponding to desired slip frequency from a variable frequency multivibrator Fig. 9 (not shown), the frequency of which may increase with speed. Automatic speed control for the two phase motor is effected by a circuit Fig. 4 (not shown) operating on the triggering pulses which causes some pulses to be missed, and the pilot voltage to be reduced by a fixed amount, according to whether a capacitor (58) has time to charge, via a speed setting rheostat (59) between consecutive pulses. In the three phase case pulses from the motor pick-up are applied to a circuit Fig. 7 (not shown) which produces a voltage when the speed is below that set on a rheostat (37), the voltage being greater the greater the speed error. This voltage controls the frequency of the slip frequency generator and also the magnitude of the pilot voltages (RST).
GB585/66A 1965-01-06 1966-01-06 Improvements in or relating to a system for forming pilot voltages for controlling electronic commutation channels for induction motors Expired GB1127263A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH12465A CH435418A (en) 1965-01-06 1965-01-06 Installation for building pilot voltages for controlling the electronic commutation of an induction motor
CH1394965A CH465041A (en) 1965-10-11 1965-10-11 Installation for creating pilot voltages for controlling the electronic commutation of a polyphase induction motor

Publications (1)

Publication Number Publication Date
GB1127263A true GB1127263A (en) 1968-09-18

Family

ID=25683590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB585/66A Expired GB1127263A (en) 1965-01-06 1966-01-06 Improvements in or relating to a system for forming pilot voltages for controlling electronic commutation channels for induction motors

Country Status (4)

Country Link
US (1) US3436631A (en)
FR (1) FR1469044A (en)
GB (1) GB1127263A (en)
NL (1) NL6600163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122434A (en) * 1982-05-28 1984-01-11 Michael John Flowerday Electric motor control

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614580A (en) * 1968-12-29 1971-10-19 Toyoda Machine Works Ltd Pulse motor drive systems
CH656432A5 (en) * 1984-01-26 1986-06-30 Cerac Inst Sa STARTING DEVICE OF A MOTOR VEHICLE.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB998912A (en) * 1961-09-21 1965-07-21 Brush Electrical Eng Speed control of a polyphase electric motor
US3280395A (en) * 1963-04-24 1966-10-18 Superior Electric Co Electric motor control circuit
US3320506A (en) * 1963-10-10 1967-05-16 Reliance Electric & Eng Co Reference system for closed loop variable frequency drive
CH419326A (en) * 1964-03-20 1966-08-31 Bbc Brown Boveri & Cie Frequency and amplitude dependent setpoint generator
US3348109A (en) * 1964-05-01 1967-10-17 Gen Electric Electric motor winding arrangements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122434A (en) * 1982-05-28 1984-01-11 Michael John Flowerday Electric motor control

Also Published As

Publication number Publication date
NL6600163A (en) 1966-07-07
US3436631A (en) 1969-04-01
FR1469044A (en) 1967-02-10
DE1513174A1 (en) 1969-07-10
DE1513174B2 (en) 1972-03-02

Similar Documents

Publication Publication Date Title
US3916272A (en) Speed control for an electronic commutated d-c motor
GB1362849A (en) Static power conversion ciruit
US3170107A (en) Controlled frequency alternating current system
US5053688A (en) Feedback circuit for eliminating DC offset in drive current of an AC motor
ES367825A1 (en) System for controlling the speed of a plurality of motors which have output shafts to drive elements that are interrelated
US4311951A (en) Apparatus and method for high slip operation of an AC electric motor at substantially zero rotation and substantially zero torque
US3784888A (en) Control for commutatorless motor
WO1990007225A1 (en) Control for producing a low magnitude voltage at the output of a pwm inverter
JPH0236788A (en) Method and circuit for control of brushless electric motor
GB1127263A (en) Improvements in or relating to a system for forming pilot voltages for controlling electronic commutation channels for induction motors
US4287463A (en) Zero rotation and zero torque detector and method for an AC electric motor drive
US3148320A (en) Synchronous induction motor speed control
US3809976A (en) Method and apparatus for synchronizing a three phase motor
JPS6126316B2 (en)
SU383192A1 (en) METHOD OF CONTROLLING THE ROTOR OF A SYNCHRONOUS MOTOR ROTOR
JPS5820559B2 (en) Induction motor speed control device
GB1276135A (en) Control circuit for the controlled semiconductors of an electronically commutated direct-current motor
SU680129A1 (en) Frequency-controlled asynchronous electric drive
SU1365327A1 (en) Device for controlling revolutions of induction motor
USRE26622E (en) Synchronous motor control circuit
SU1050082A1 (en) Frequency-controlled motor drive
SU944043A1 (en) Ac electric drive
SU758453A1 (en) Device for regulating induction phase-wound rotor motor speed
SU982174A1 (en) Self-sustained dc voltage-to-three-phase ac voltage converter for power supply of hysteresis motor
SU875568A1 (en) Device for control of multiphase synchronous electric motor