Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1993-11-16
1996-01-23
Ro, Bentsu
Electricity: motive power systems
Limitation of motor load, current, torque or force
318254, 363 26, 363134, H02P 608
Patent
active
054867436
ABSTRACT:
An inverter controlling a brushless motor includes a microcomputer detecting a rotational position of a motor rotor on the basis of comparison signals obtained by comparison of terminal voltages of respective windings of the brushless motor with a reference voltage, determining a commutation timing. The current flowing through a DC power line is detected by a shunt resistor and the detected current is sampled and compared sequentially by the microcomputer. The microcomputer obtains a compensation time period in accordance with the result of comparison. The commutation timing of each of switching transistors of the inverter is compensated with respect to a reference commutation timing by the obtained compensation time period. Alternatively, the microcomputer detects energization time periods of diodes as the commutation time periods on the basis of the comparison signals and determine the commutation timing from the detected commutation time periods. The commutation timing is compensated by the compensation time period with respect to the reference commutation timing.
REFERENCES:
patent: 4500821 (1985-02-01), Bitting et al.
patent: 5075608 (1991-12-01), Erdman et al.
Kabushiki Kaisha Toshiba
Ro Bentsu
LandOfFree
Inverter and air conditioner controlled by the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inverter and air conditioner controlled by the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inverter and air conditioner controlled by the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1506765