Thomas Joseph Mcnulty, 701121 Elgin Ave, Forest Park, IL 60130

6583522, Jun 24, 2003

Sep 27, 2000

09/670079

Thomas C. McNulty - Trenton NJ
Anand Rangarajan - Berkeley Heights NJ

WorldWater Corp. - Pennington NJ

H02J 100

307 71, 323906

In a readily switchable multiple solar panel system, the individual solar panels are interconnected with a control or switching apparatus which allows the solar panels to be readily switched into various series, parallel, or series-parallel configurations. With a relay based switching apparatus, a relay is connected between a pair of solar panels, so that in a first state, the panels are in series where the total voltage is the sum of each individual panels voltage. When the relay is switched to the second state, each solar panel is in parallel, where the total voltage is a single panels voltage and the current is multiplied by the number of panels. Multiple panels can be connected in this manner, with a relay between each successive pair of panels. With each relay connected in a parallel arrangement, a simple control switch in series with the relay coils can control the panel switching. The coil of each relay can also be individually controlled.

7148650, Dec 12, 2006

Jun 22, 2005

11/158876

Thomas Charles McNulty - Ewing NJ, US
Juan Carlos Horta - Perth Amboy NJ, US
Joacine Plaisime - Hamilton Township NJ, US

World Water & Power Corp. - Pennington NJ

H02P 27/06
H02M 5/45
H01L 31/042

318801, 318800, 318807, 320 30, 323906, 136243, 136244, 363 74, 363 95

A method and apparatus are implemented in software to control motor speed as a function of available power in a DC source-inverter-AC motor system, i. e. to perform maximum power tracking of motor speed. An inverter or motor drive converts DC power from a DC source, such as a solar panel, to AC power, to power the motor. The inverter or motor drive is controlled by software, implemented either by programmable features built directly into the inverter or drive or by a separate programmable device connected to the inverter or drive, to track motor power as a function of source power. The software-controlled inverter or drive sets motor speed as a function of source power by sensing only a single parameter, the DC source voltage. The software-controlled inverter or drive samples the source voltage at preset intervals, and changes the frequency of the AC output of the inverter or drive to match or track the available power so that the motor operates at or near its optimum for any source voltage.

2004009, May 20, 2004

Nov 6, 2003

10/704241

Thomas McNulty - Ewing NJ, US
Anand Rangarajan - Berkeley Heights NJ, US

H02J007/32

320/101000

A hybrid power system has two voltage sources, a variable DC power source, and a second power source, connected through selection components to a common node. The variable DC power source may be a solar power source and the second source may be an AC grid. The selection components, e.g. blocking diodes, SCRs, or relays, allow one or both of the sources to be connected to the node depending on the voltages produced by the sources. A variable speed drive and load may be connected to the node.

2006005, Mar 16, 2006

Sep 10, 2004

10/938829

Thomas McNulty - Ewing NJ, US
Joacine Plaisime - Trenton NJ, US

H02P 3/00

318474000

A motor is shut off when its operation encounters no load conditions, e.g. low water conditions for a submersible pump motor. The shutoff signal is obtained from the motor frequency and motor power. When motor frequency exceeds the rated frequency and motor power drops to a preselected level below rated power, a shutoff signal is produced. The motor can be kept off for a preselected period of time before attempting to restart.

2007029, Dec 20, 2007

Jun 14, 2006

11/452627

Thomas Charles McNulty - Ewing NJ, US
Juan Carlos Horta - North Brunswick NJ, US

H02P 27/04

318800

Distribution of solar power in a solar DC source—variable frequency drive (VFD)—AC motor system is controlled by using solar irradiance. In addition, motor speed may be controlled as a function of available power, i.e. maximum power point tracking of motor speed, using solar irradiance.

6275403, Aug 14, 2001

Dec 31, 1998

9/224537

Thomas C. McNulty - Trenton NJ
Douglas B. Williams - Florence NJ

WorldWater Corporation - Pennington NJ

H02M 7537
H02M 324

363131

It is difficult to control a variable speed converter or inverter so that an AC motor or other load may be operated from a DC source under varying source and/or load conditions. A DC bias voltage control related to AC frequency by a predetermined relationship is used to control the DC to AC converter. For variable speed AC converters, a low voltage bias control circuit is effectively used to control motor frequency by applying a bias voltage to the converter so that the load requirements are optimally met by the available DC source voltage. The controller can be used in many DC source--bias controlled converter--AC load systems formed with the bias controlled drive, for example a solar powered water pump in which a DC photovoltaic panel is used to power an AC pump motor.