Title:
CONTROL SYSTEM FOR SINGLE-PHASE INDUCTION MOTOR AND CONTROL METHOD FOR SINGLE-PHASE INDUCTION MOTOR
Document Type and Number:
WIPO Patent Application WO/2010/102364
Kind Code:
A1
Abstract:
The present invention relates to a control system for a single-phase induction motor comprising at least one electronic control circuit (6), at least one main switch (3), at least one auxiliary switch (4), at least one voltage conditioner block (5), the main switch (3) being electrically connected to the main winding (21) of the single-phase induction motor (2), the auxiliary switch (4) being electrically connected to the auxiliary winding (22) of the single-phase induction motor (2), the electronic control circuit (6) being electrically connected to the voltage conditioner block (5) by way of first and second power terminals (9,10), the electronic control circuit (6) being electrically connected to the main and auxiliary switches (3,4) by way of first and second control terminals (13,14), the main and auxiliary switches (3,4) being turned on or off by the electronic control circuit (6) in order to energize or de-energize the main (21) and auxiliary (22) windings, the control system for a single-phase induction motor and the single-phase motor (2) being electrically connectable to an alternating voltage source (1), the voltage conditioner block (5) is connected in parallel to the auxiliary switch (4) by way of first and second connection terminals (7,8), the voltage conditioner block (5) being capable of accumulating electric energy when the auxiliary switch (4) is turned off, the voltage conditioner block (5) being arranged to supply electrical power greater than a minimum electrical voltage value (Vmin) to the electronic control circuit (6), by way of the first and second power terminals (9,10), during at least a start-up time (tp), by way of the energy accumulated in the voltage conditioner block (5), when the main (3) and auxiliary (4) switches are turned on.
Inventors:
SCHWARZ MARCOS G (BR)
Application Number:
PCT/BR2010/000066
Publication Date:
September 16, 2010
Filing Date:
March 10, 2010
Export Citation:
Assignee:
WHIRLPOOL SA (BR)
SCHWARZ MARCOS G (BR)
SCHWARZ MARCOS G (BR)
International Classes:
H02P1/42; H02M1/08; H02M1/096; H02M1/44; H02P25/04; H03K17/06
Foreign References:
| JPH04285487A | 1992-10-09 | |||
| EP0367006A2 | 1990-05-09 | |||
| US5661390A | 1997-08-26 | |||
| US6194682B1 | 2001-02-27 |
Attorney, Agent or Firm:
DANNEMANN, SIEMSEN, BIGLER & IPANEMA MOREIRA (Rua Marquês de Olinda 70, Cep: -040 - Rio de Janeiro - RJ, BR)
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