MY105547A - Electric motor controls and laundry machines using such motor controls - Google Patents
Electric motor controls and laundry machines using such motor controlsInfo
- Publication number
- MY105547A MY105547A MYPI92000299A MYPI19920299A MY105547A MY 105547 A MY105547 A MY 105547A MY PI92000299 A MYPI92000299 A MY PI92000299A MY PI19920299 A MYPI19920299 A MY PI19920299A MY 105547 A MY105547 A MY 105547A
- Authority
- MY
- Malaysia
- Prior art keywords
- reversing
- condition
- motor controls
- motor
- reversal
- Prior art date
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A CONTROL APPARATUS AND METHOD FOR AN ELECTRIC MOTOR HAVING SENSING DEVICES WHICH SENSE THE FREQUENCY AND POLARITY OF EMFS IN THE ROTOR WINDINGS DOWN TO A CONDITION WHERE THE ROTOR IS IN CONDITION FOR REVERSING, AND CAUSING REVERSING OF THE MOTOR WHEN THE FREQUENCY IS SUCH AS TO ALLOW REVERSING AND THE POLARITS OF A SELECTED WINDING IS AT OR NEAR A ZERO CROSSING BETWEEN POSITIVE AND NEGATIVE POLARITIES. CYCLICAL REVERSAL IS EFFECTED BY MEASURING THE TIME THE ROTOR TAKES TO COAST FROM A "POWER OFF" CONDITION TO THE CONDITION FOR REVERSING AND WITH AN ELECTRONICALLY COMMUTATED MOTOR REVERSING CAN USUALLY BE EFFECTED IN ONE COMMUTATION PERIOD. THE MOTOR IS USED IN A CLOTHES WASHING MACHINE OR SIMILAR APPLICATION WHERE RAPID REVERSAL IS REQUIRED OR TIMING OF THE TIME FROM ONE REVERSAL TO THE NEXT IS REQUIRED TO BE CONSTANT. (FIG. 1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ213490A NZ213490A (en) | 1985-09-16 | 1985-09-16 | Cyclic motor reversal by forced commutation |
Publications (1)
Publication Number | Publication Date |
---|---|
MY105547A true MY105547A (en) | 1994-10-31 |
Family
ID=79601435
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI87000633A MY102857A (en) | 1985-09-16 | 1987-05-11 | Improvements in or relating to electronic motor controls, laundry machines including such controls and/or methods of operating such controls. |
MYPI92000302A MY105546A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
MYPI92000299A MY105547A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI87000633A MY102857A (en) | 1985-09-16 | 1987-05-11 | Improvements in or relating to electronic motor controls, laundry machines including such controls and/or methods of operating such controls. |
MYPI92000302A MY105546A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
Country Status (1)
Country | Link |
---|---|
MY (3) | MY102857A (en) |
-
1987
- 1987-05-11 MY MYPI87000633A patent/MY102857A/en unknown
- 1987-05-11 MY MYPI92000302A patent/MY105546A/en unknown
- 1987-05-11 MY MYPI92000299A patent/MY105547A/en unknown
Also Published As
Publication number | Publication date |
---|---|
MY105546A (en) | 1994-10-31 |
MY102857A (en) | 1993-03-31 |
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