Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Reexamination Certificate
2005-12-05
2011-12-06
Kramer, Devon C (Department: 3746)
Pumps
Condition responsive control of pump drive motor
By control of electric or magnetic drive motor
C417S053000, C417S022000
Reexamination Certificate
active
08070456
ABSTRACT:
A method for operation of a compressor supplied by a power converter having an operating condition (BV) for the compressor (12) supplied by a power converter, generated from a measured actual rotational speed (n) of the compressor and a given effective current component (iW) of a measured power converter output current (I) using a stored speed-dependent pump characteristic curve (SG) monitored for validity such that on determining invalidity, as per a stored speed-dependent instantaneous curve, a control signal (SSG) for reducing a torque (M) is generated. A method for operation of a compressor supplied by a power converter is then achieved with which the duration and the intensity of surge conditions is significantly reduced.
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Mertens Axel
Neeser Gerhard
Day Ursula B.
Feiereisen Henry M.
Kramer Devon C
Siemens Aktiengesellschaft
Zollinger Nathan
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