| 摘要 |
A system and method for controlling a variable capacity compressor driven by a motor. Preferably, said system and method are used with a reversible, two-stage compressor motor. In one embodiment, the method includes, for example, operating the variable capacity compressor at a first capacity to satisfy a demand for heating or cooling; detecting a change in the demand for heating or cooling; operating the variable capacity compressor at a second, different capacity based on the detected change in demand; detecting an operating parameter that can indicate an opportunity to increase compressor efficiency when the compressor is operating at a given capacity; and varying the torque applied by the motor when the detected operating parameter indicates an opportunity to increase efficiency of the compressor by varying the torque.
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