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US20150204335 SYSTEM FOR TURNING OFF POWER TO POOL EQUIPMENT UPON THE DETECTION OF A DROP IN WATER LEVEL  
Some embodiments of the present invention include a concealed system for preventing water being supplied into a pool upon a detection of a predetermined drop in water level in the pool. The system...
US20120027621 ELECTRIC MOTOR SYSTEM  
An electric motor system has a first electric motor, a second electric motor and a control circuit shared by the first motor and the second motor. At least one of the first motor and the second...
US20150056082 METHOD OF DETECTING AND BREAKING GAS LOCKS IN AN ELECTRIC SUBMERSIBLE PUMP  
A method of breaking a gas lock in an electrical submersible pump, comprising: a) monitoring a measured value related to the electrical current used by a pump motor connected to and providing...
US20150132149 ELECTRIC FAN  
An electric fan comprises a motor, a plurality of blades, a shroud and a control unit, wherein the motor is fixedly mounted to a rear net of the shroud; the blades are mounted inside the shroud,...
US20150037171 ELECTRIC SUBMERSIBLE PUMP HAVING A PLURALITY OF MOTORS OPERATIVELY COUPLED THERETO AND METHODS OF USING  
A downhole electric submersible pump system includes a plurality of motors operatively coupled on a common shaft with an electric submersible pump and a downhole switch mechanism for providing an...
US20130112173 METHOD AND APPARATUS TO MONITOR AN ELECTRIC MOTOR IN A RETURNLESS FUEL SYSTEM  
An electric motor is configured to provide mechanical power to a fuel pump. A method for monitoring the fuel pump includes estimating a pump speed and a nominal pump motor current in relation to a...
US20110103974 Control device, oil well with device and method  
A method of operating an oil well comprises applying through a regenerative variable frequency drive AC electrical energy from a power grid to an AC electric motor to operate a drive mechanism of...
US20120324865 METHOD FOR REGULATING A PUMP OF AN SCR SYSTEM  
A method for regulating a motor-driven pump of an SCR system, the pump delivering a pressure, being subjected to a hydraulic torque in relation to this pressure and also to a resistive torque and...
US20150204340 BRUSHLESS DC MOTOR FAN CONTROLLED EITHER REMOTELY OR BY CONDUCTING WIRE  
A fan is provided with a brushless DC motor; a controller assembly mounted in the brushless DC motor and electrically connected to the motor; a control electrically connected to the controller...
US20150211534 BATTERY-OPERATED BLOWER FILTER SYSTEM FOR USE IN POTENTIALLY EXPLOSIVE AREAS  
A blower filter system includes a blower unit (11), an electric motor (24) for driving a blower impeller, a control unit (27) for controlling the electric motor, contacts (22, 23) for connecting...
US20140271235 DYNAMIC SPEED CONTROL FOR PUMP MOTOR  
Systems and methods of controlling the speed of a pump configured to move liquid through a pump system are described. The actual motor speed of the pump motor is controlled by adjusting a current...
US20150159658 MOTOR-DRIVEN COMPRESSOR  
A motor-driven compressor includes an electric motor driven by a motor driver, which includes a switching element that converts DC voltage from a battery to AC voltage. A temperature detector...
US20140134000 FAN CONTROL CIRCUIT  
A control circuit controls a fan to cool an integrated baseboard management controller (iBMC) in a server. The control circuit includes a state determination module. When the server is powered off...
US20090097988 AIRFLOW CONTROL FOR VARIABLE SPEED BLOWERS  
An apparatus for controlling an air distribution system by controlling the speed of a motor associated with a blower to maintain a rate of air flow in the system at substantially a target air flow...
US20150159655 MOTOR-DRIVEN COMPRESSOR  
A motor-driven compressor includes an electric motor driven by a motor driver, which includes a switching element that converts DC voltage from a battery to AC voltage. A control unit controls the...
US20150093254 MOTOR-DRIVEN COMPRESSOR  
A motor-driven compressor includes a compression portion, an electric motor, a motor drive circuit having switching element, a temperature detector, and a switcher, which switches the drive mode...
US20110223038 CONTROLLER-INTEGRATED MOTOR PUMP  
A controller-integrated motor pump is disclosed. The motor pump includes: a pump; a motor configured to drive the pump; a control unit configured to control the motor; and a pressure measuring...
US20140186191 OPERATING MACHINE  
To provide a hybrid type or battery type working machine which hardly gives a feeling of strangeness on an operation to an operator and in which electric power stored in a storage battery can be...
US20140271237 VACUUM PUMP  
An estimating section detects a signal including counter electromotive voltage information of the motor, and estimating a magnetic pole electric angle and a rotational speed of the motor. A...
US20140271236 FAN DRIVING CIRCUIT  
A fan driving circuit drives a first fan and a second fan which are connected in parallel and connected to an anode of a direct current power. The fan driving circuit includes a pulse width...
US20110200454 METHOD IN CONNECTION WITH A PUMP DRIVEN WITH A FREQUENCY CONVERTER AND FREQUENCY CONVERTER  
An exemplary frequency converter and method are directed to estimating an operation point of a pump when the QH characteristic curve of the pump is known. The frequency converter controls the...
US20060018772 Rotary vacuum pump, structure and method for the balancing thereof  
A rotary vacuum pump (101; 201) comprising displacement sensors (121A-121F; 221A-221F), variously coupled to the pump basement (103; 203) and arranged close to the pump rotor (113; 213) and/or to...
US20100316503 PUMP UNIT  
The invention relates to a pump assembly with a pump (4) and with an electrical drive motor (6), as well as an electronic control device (8), wherein the electronic control device (8) comprises a...
US20130309101 ELECTRIC PUMP DEVICE  
An electric pump device of an aspect of the invention includes a state determination unit and a gain adjusting unit. The state determination unit determines whether or not the electric pump device...
US20130315752 PUMP UNIT  
A pumping set includes an electrical drive motor and electronic controller, wherein the controller is divided into two functional modules arranged on at least two separate circuit boards, of which...
US20090087319 PUMP SYSTEM INCLUDING A VARIABLE FREQUENCY DRIVE CONTROLLER  
A pump system generally comprising an electrical connector operable to couple with an electric circuit to receive electricity, an electric motor operable to actuate a pump to pump a fluid, and a...
US20150093255 METHOD AND ARRANGEMENT FOR CONTROLLING A SOLAR POWERED PUMP  
A method and arrangement are disclosed for operating a pump in pump system having a photovoltaic panel system, an inverter electrically connected to the photovoltaic panel system, and a motor...
US20080292475 Driving Controlling Apparatus for Reciprocating Compressor and Method Thereof  
Driving controlling apparatus and method for a reciprocating compressor capable of stably driving a reciprocating compressor when a reciprocating compressor is operated or an output capacity of...
US20130045114 FAN CONTROL UNIT AND METHOD  
A fan control unit measures the rotating speeds of the first and second fans to calculate the relative work intensities of the two fans. The control unit determines whether a difference between...
US20140079564 SYSTEMS AND METHOD FOR WIRELESSLY COMMUNICATING WITH ELECTRIC MOTORS  
An electric motor communication system for use with a fluid moving system is provided. The electric motor communication system includes an electric motor including a wireless communication device...
US20110189027 PUMP POWERED BY A POLYMER TRANSDUCER  
The invention provides a pump with a transducer comprising a laminate with a film of a dielectric polymer material arranged between first and second layers of an electrically conductive material...
US20140271234 TURBOCHARGER WITH MAGNETIC BRAKE  
Turbochargers are disclosed that have a braking system to brake the rotation of an electrically conductive compressor wheel within the turbocharger. The brake system includes the electrically...
US20120156058 VOLTAGE COMPENSATING PISTON FUEL PUMP AND FUEL DELIVERY SYSTEM THEREWITH  
A piston-type fuel pump is provided. The fuel pump includes a housing bounding an internal cavity with a cylindrical tube disposed in the internal cavity. The cylindrical tube provides a bore...
US20150139818 MOTOR-DRIVEN COMPRESSOR  
A motor-driven compressor includes a compression unit that includes movable and fixed scrolls and a compression chamber, an electric motor that includes a rotor and drives the compression unit, a...
US20110076157 CENTRIFUGAL PUMP UNIT  
The invention relates to a centrifugal pump assembly with an electric drive motor and with a control device having a frequency converter, for the control of the rotational speed of the drive...
US20140127035 PROPULSION DEVICE FOR VESSEL AND VESSEL HAVING SAME  
Disclosed herein is a propulsion apparatus for ships. The propulsion apparatus, which includes a front propeller and a rear propeller to rotate in opposite directions and provides propulsion power...
US20130291578 HEAT PUMP DEVICE, HEAT PUMP SYSTEM, AND METHOD FOR CONTROLLING THREE-PHASE INVERTER  
A voltage-command correction-value computation unit outputs a correction value for correcting a voltage command value according to a bus voltage. A multiplier calculates a voltage command value...
US20120251335 PUMP CONTROLLER WITH MULTIPHASE MEASUREMENT  
Methods and apparatus for measuring phase flow rate of the components of a multiphase fluid in a conduit. A pumping system pumps out a multiphase fluid from a wellbore. At least one processor,...
US20140147289 FAN CONTROL CIRCUIT  
A control circuit controls a fan to cool an integrated baseboard management controller (iBMC) in a server. The control circuit includes a state determination module. When the server is powered off...
US20150226217 ELECTRIC MACHINE - FLUID MACHINE STANCHEV AGGREGATION SET  
Electrical machine-Fluid Machine Stanchev aggregation set comprising Stator/Body Unit, Rotor/Piston Units, Power Supply and Control Module. The stator/body unit (1) shapes volume of rotation in...
US20090226330 ARTIFICIAL LIFT STRUCTURES  
This invention demonstrates an improved method of constructing an artificial lift device for deep wells, in which the deadload of the pump mechanism is supported by a continuously-controlled gas...
US20140227108 VARIABLE-FREQUENCY MOTOR DEVICE AND FAN THEREOF  
A variable-frequency motor device that runs on alternating current includes a first converting circuit, a second converting circuit, and a DC variable-frequency motor. An operation module is...
US20090107470 Electronic fuel pump  
A fuel pump for deployment in a fuel system for an internal combustion engine comprises a 3-phase brushless direct current motor, a sling vane impeller with blade-shaped sling vanes, sensorless...
US20150056083 ENERGY SAVING SYSTEM AND METHOD FOR DEVICES WITH ROTATING OR RECIPROCATING MASSES  
A system and method are provided for saving energy for an electric motor having periodic load variations by reducing the supply voltage to the motor during an open loop mode. The motor and system...
US20080187443 Adjustable frequency pump control system  
An adjustable frequency pump control system (10) that is primarily designed for use in commercial pool filtration systems. The system (10) automatically selects one of three operating speeds that...
US20110253236 NOVEL ELECTROMAGNETIC COUPLING JET APPARATUS  
A massage jet pump may include a motor to rotate a first shaft, a first magnetic pole array may be adapted to be rotated by the first shaft, a second magnetic pole array may be magnetically...
US20090136361 Vacuum turbomolecular pump  
A vacuum turbomolecular pump (10) is driven by a brushless direct-current drive motor (16) comprising stator coils and a permanent-magnetically excited motor rotor. When rotating, the motor rotor...
US20120107141 MOTOR-DRIVEN COMPRESSOR AND CONTROLLER THEREFOR  
A motor controller for a motor-driven compressor includes a compressing body for compressing and discharging a refrigerant and a motor including a rotary shaft, the motor for driving the...
US20130121845 COMPRESSOR STARTING METHOD AND APPARATUS  
A piston type compressor wherein the position of the piston highest pressure point is indicated and the rotor of the motor at the optimal starting angle aligned prior to the actual compression...
US20150176579 DEVICE AND METHOD FOR CONTROLLING LINEAR COMPRESSOR  
The control module includes a drive circuitry that drives the linear compressor based on a control signal, a detector that detects a motor current and a motor voltage corresponding to a motor of...

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