ES2110896A1 - Method and system for PWM in a three phase supply - Google Patents

Method and system for PWM in a three phase supply

Info

Publication number
ES2110896A1
ES2110896A1 ES09500476A ES9500476A ES2110896A1 ES 2110896 A1 ES2110896 A1 ES 2110896A1 ES 09500476 A ES09500476 A ES 09500476A ES 9500476 A ES9500476 A ES 9500476A ES 2110896 A1 ES2110896 A1 ES 2110896A1
Authority
ES
Spain
Prior art keywords
modulation
sinusoidal
switching
inverter
square
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.)
Granted
Application number
ES09500476A
Other languages
Spanish (es)
Other versions
ES2110896B1 (en
Inventor
Attilio Bobbio
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.)
Leonardo SpA
Original Assignee
Finmeccanica SpA
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 Finmeccanica SpA filed Critical Finmeccanica SpA
Publication of ES2110896A1 publication Critical patent/ES2110896A1/en
Application granted granted Critical
Publication of ES2110896B1 publication Critical patent/ES2110896B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H02M7/53—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
    • H02M7/5387—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 in a bridge configuration
    • H02M7/53871—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 in a bridge configuration with automatic control of output voltage or current
    • H02M7/53875—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 in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

When switching between sinusoidal and square-wave modulation in the supply of a three-phase motor by an inverter 20, the zero crossing instant of the alternating supply voltage of one of the phases is recognised and the modulation is switched coincident with that instant. Into the voltage pulse applied to that phase, immediately prior to or following the modulation switching, depending on whether the switching takes place from square-wave modulation to sinusoidal modulation or vice-versa, a correction is applied which reduces the area of the pulse by a quantity proportional to the period and to the amplitude of the said sinusoidal modulation. Control of the inverter 20 is obtained by means of a counter 28, EPROM's 29, 30, 31, 43 and 50 and a logic control 48.
ES09500476A 1994-06-24 1995-03-10 METHOD AND STEP SYSTEM OF SINUSOIDAL MODULATION OF A CONTINUOUS VOLTAGE, IN A THREE PHASE SYSTEM, TO RECTANGULAR WAVE MODULATION. Expired - Lifetime ES2110896B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941322A IT1271195B (en) 1994-06-24 1994-06-24 SWITCHING TECHNIQUE FROM SINE-TO-SQUARE MODULATION FOR THREE-PHASE MOTOR SUPPLY BY INVERTER AND RELATED SWITCHING SYSTEM

Publications (2)

Publication Number Publication Date
ES2110896A1 true ES2110896A1 (en) 1998-02-16
ES2110896B1 ES2110896B1 (en) 1998-10-01

Family

ID=11369165

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09500476A Expired - Lifetime ES2110896B1 (en) 1994-06-24 1995-03-10 METHOD AND STEP SYSTEM OF SINUSOIDAL MODULATION OF A CONTINUOUS VOLTAGE, IN A THREE PHASE SYSTEM, TO RECTANGULAR WAVE MODULATION.

Country Status (3)

Country Link
ES (1) ES2110896B1 (en)
GB (1) GB2291286A (en)
IT (1) IT1271195B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6404251B1 (en) * 2000-03-27 2002-06-11 Linear Technology Corporation Systems and methods for linearly varying a pulse-width modulation signal with a control signal
FR3046308B1 (en) * 2015-12-23 2018-02-16 Somfy Sas METHOD FOR PSEUDO-SUSUSOIDAL CONTROL OF A SYNCHRONOUS ELECTRIC MOTOR

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870945A (en) * 1974-02-28 1975-03-11 Gen Electric Inverter system having smooth switching between operational modes
US4047083A (en) * 1976-03-08 1977-09-06 General Electric Company Adjustable speed A-C motor drive with smooth transition between operational modes and with reduced harmonic distortion
US4377779A (en) * 1980-12-29 1983-03-22 General Electric Company Pulse width modulated inverter machine drive
GB2120868A (en) * 1982-05-26 1983-12-07 Danfoss As Drive circuit for a three-phase inverter
GB2142194A (en) * 1983-06-22 1985-01-09 Ates Componenti Elettron Speed control with pulse modulation and regulation of the voltage effective value for three-phase asynchronous motor
US4926104A (en) * 1989-10-18 1990-05-15 General Electric Company Adjustable speed AC drive system control for operation in pulse width modulation and quasi-square wave modes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291368A (en) * 1979-03-30 1981-09-22 Borg-Warner Corporation Pulse-width modulated inverter system and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870945A (en) * 1974-02-28 1975-03-11 Gen Electric Inverter system having smooth switching between operational modes
US4047083A (en) * 1976-03-08 1977-09-06 General Electric Company Adjustable speed A-C motor drive with smooth transition between operational modes and with reduced harmonic distortion
US4377779A (en) * 1980-12-29 1983-03-22 General Electric Company Pulse width modulated inverter machine drive
GB2120868A (en) * 1982-05-26 1983-12-07 Danfoss As Drive circuit for a three-phase inverter
GB2142194A (en) * 1983-06-22 1985-01-09 Ates Componenti Elettron Speed control with pulse modulation and regulation of the voltage effective value for three-phase asynchronous motor
US4926104A (en) * 1989-10-18 1990-05-15 General Electric Company Adjustable speed AC drive system control for operation in pulse width modulation and quasi-square wave modes

Also Published As

Publication number Publication date
IT1271195B (en) 1997-05-27
ES2110896B1 (en) 1998-10-01
ITMI941322A0 (en) 1994-06-24
GB9505676D0 (en) 1995-05-10
GB2291286A (en) 1996-01-17
ITMI941322A1 (en) 1995-12-24

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