William Mcdaniel

US Patent:

6462519, Oct 8, 2002

Filed:

Jun 5, 2001

Appl. No.:

09/874690

Inventors:

William D. McDaniel - Oakview MO 64118
Gail A. McDaniel - Oakview MO 64118
Timothy J. McDaniel - Oakview MO 64118

International Classification:

G05F 170

US Classification:

323211

Abstract:

An automatic power factor correction system, for an electrical power installation drawing varying levels of reactive power, measures an electrical parameter of the power drawn by a load of a power installation which is capable of indicating a level of reactive power drawn by the load and couples a combination of capacitors to the power line to compensate for the level of reactive power indicated by the electrical parameter measured. A first embodiment of the system is based on a measured level of current and the effect on the measured level of current of adding compensating capacitors of selected capacitances to the power line. A second embodiment of the system is based on a measurement of phase angle of the power drawn and the addition of a calculated combination of capacitors to the power line to compensate for a measured level of reactive power.

US Patent:

6700358, Mar 2, 2004

Filed:

Jun 4, 2002

Appl. No.:

10/162406

Inventors:

William D. McDaniel - Oakview MO 64118
Gail A. McDaniel - Oakview MO 64118
Timothy J. McDaniel - Oakview MO 64118

International Classification:

G05F 170

US Classification:

323211

Abstract:

An automatic power factor correction system, for an electrical power installation drawing varying levels of reactive power, measures an electrical parameter of the power drawn by a load of a power installation which is capable of indicating a level of reactive power drawn by the load and couples a combination of capacitors to the power line to compensate for the level of reactive power indicated by the electrical parameter measured. In particular, the system measures the phase angle of the power drawn and calculates a combination of capacitors to connect to the power line to compensate for a measured level of reactive power.

US Patent:

7002321, Feb 21, 2006

Filed:

Feb 27, 2004

Appl. No.:

10/789253

Inventors:

William D. McDaniel - Oakview MO, US
Gail A. McDaniel - Oakview MO, US
Timothy J. McDaniel - Oakview MO, US

International Classification:

G05F 1/70

US Classification:

323211

Abstract:

An automatic power factor correction system, for an electrical power installation drawing varying levels of reactive power, measures an electrical parameter of the power drawn by a load of a power installation using a power measurement integrated circuit, the parameter being capable of indicating a level of reactive power drawn by the load, and couples a combination of capacitors to the power line to compensate for the level of reactive power indicated by the electrical parameter measured. In a first embodiment of the invention, the combination of power factor compensating capacitors is calculated from a signed value of reactive power drawn by the load. In a second embodiment, the compensating capacitor combination is calculated from a value of power factor for the load which is calculated from a ratio of an active power value to an apparent power value.