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8972219 Method and system of monitoring electrical brushes  
Described herein are embodiments of methods and systems of monitoring electrical brushes in electrical rotating machinery. One embodiment of the method comprises continuously measuring at least...
8791814 Remote annunciator  
Some embodiments relate to a remote annunciator 10 that includes an enclosure 11 and a control 12 within the enclosure 11. The control 12 receives signals S from a plurality of transfer switches...
8786450 Method for identifying dirt and/or dew on components of a voltage intermediate circuit converter  
The invention relates to a method for identifying dirt and/or dew on components of a voltage intermediate circuit converter. According to the invention, the temporal curve of a partial discharge...
8686670 Method and apparatus for calibrating and testing brake holding torque  
A system and method for determining the holding torque of a brake in a material handling system is disclosed. The material handling system may include a bridge, a trolley, and a hoist, each driven...
8610591 Method and arrangement for monitoring the bearing currents in an electrical machine  
The invention inter alia relates to a method for monitoring the bearing current of an electrical machine (10). An electrode (100) arranged at a distance (d) to a shaft and the shaft—due to the gap...
8552668 Architecture for automotive electrical body systems  
An automotive electrical body system includes a plurality of electrical assemblies coupled to at least one automotive body component. Each of the assemblies includes a heating element for heating...
8537024 Sanitary rotary valve  
A sanitary rotary valve has a casing, a side plate arranged at a first side of the casing, a rotor provided in the casing, a rotatable shaft for rotating the rotor, a geared motor for rotating the...
8538709 Battery learning system  
A fuel battery system is comprised of a power source circuit, a rotating electrical machine that is a load, a memory device and a control unit. Here, a battery learning system corresponds to an...
8514092 Alarm circuit for fans  
An alarm circuit is for a fan. The alarm circuit includes a direct current converting circuit, a first electronic switch, a second electronic switch, a clock chip, and a light emitting diode. When...
8451134 Wind turbine generator fault diagnostic and prognostic device and method  
A computer implemented method and system includes using information provided from sensors to monitor a wind turbine generator and provide signals representative of operation of the wind turbine...
8436570 Motor driving system, motor controller, and safety function expander  
The motor driving system includes a driving state amount detector configured to detect a driving state amount, a motor control part configured to perform a power supply control, a higher control...
8374834 Statistical method for analyzing the performance of oilfield equipment  
A statistical methodology is disclosed to provide time-to-event estimates for oilfield equipment. A method according to the present invention extracts unbiased information from equipment...
8351168 Open circuit detector and method therefore  
A circuit comprises a switch, a driver circuit, and an open circuit detector. The switch has a first current electrode coupled to a power supply terminal, a second current electrode coupled to...
8344678 Servomotor control system and servomotor unit  
A servomotor control system includes: an integrated control unit for integrally controlling servomotors; and servomotor units coupled with the integrated control unit and the servomotors. Each...
8301331 Method and device for the calibration or diagnosis of a motor vehicle brake system having a cyclically operated pump  
A method for the calibration or diagnosis of a motor vehicle brake system having a cyclically operated pump. At least one parameter (URPOff), representing the electromotor force of the reference...
8279565 Methods and systems relating to overcurrent circuit protection  
Systems and methods for providing overcurrent circuit protection are disclosed. A method of providing overcurrent circuit protection may include setting a threshold current value according to an...
8199022 Test module for motor control center subunit  
A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and...
8174402 Machine condition indication system  
A machine condition monitor resides in close proximity to a machine train, such as an AC inductive electric motor coupled to a driven unit such as a centrifugal pump or fan. A plurality of sensing...
8159362 Method of detecting faults using graduated fault detection levels  
A faulted circuit indicator utilizes digitized fault indication curves to determine if a fault has occurred in a monitored conductor. Fault indication curves are intended to be similar to trip...
8140291 Stator turn fault detection apparatus and method for induction machine  
A system and method are provided for correction of parameters used in determination of stator turn faults of an induction motor. An embodiment may include determining a residual impedance and/or a...
8134472 Monitoring systems and methods for monitoring the condition of one or more components of an electrical device  
Methods and systems for monitoring a component of an electrical device and/or a brush of a brush holder assembly are provided. One method includes receiving data from a plurality of remote...
8130112 Method of alarm mask generation and condition monitoring of wind turbines  
In one aspect, an alarm mask for condition monitoring in a wind turbine is automatically generated. A reference data selecting definition is selected from a control definition repository in the...
8120503 Brush wear monitor having mounted flags interactable with an impedance dependent switch  
A worn brush monitoring system for monitoring a plurality of brushes of an electrical machine comprises a plurality of mounted flags configured to be in moveable communication relative to a wear...
8089365 Wiper control method and wiper control device  
A wiper control method and a wiper control device which can stabilize wiping rhythm of a wiper while ensuring required wiping and smoothly respond to change of a rainfall situation are provided....
8054190 Apparatus for monitoring of brushes, in particular slipring or commutator brushes, on electrical machines  
An apparatus is disclosed for monitoring brushes, such as slipring or commutator brushes, on electrical machines. At least one electronic sensor is configured to be arranged in or on a brush...
8004226 Method and system for detecting a failed current sensor in a three-phase machine  
A method of detecting one or more failed current sensor and estimating a phase current for the failed current sensor on a three-phase machine is disclosed. The method may include detecting one or...
7969059 Brush assembly having a brush wear detector and indicator for a D.C. motor  
A brush assembly having a brush wear indicator for use with electric actuating devices such as motors and generators that detects the worn condition of a brush and generates a signal indicating...
7956637 System and method to determine electric motor efficiency using an equivalent circuit  
A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric...
7956762 Method and apparatus for power generation failure diagnostics  
A controller (500) in an electric drive system is used to develop power generation failure diagnostics. During operation, the controller (500) receives a set of generator inputs, a set of machine...
7949483 Integration of intelligent motor with power management device  
A method and apparatus provide for reduced cost and complexity in managing an intelligent motor in an architecture in which information is transferred between a power management device and the...
7916038 Monitoring systems and methods for monitoring the condition of one or more components of an electrical device  
Methods and systems for monitoring a component of an electrical device and/or a brush of a brush holder assembly are disclosed. One method includes receiving data from a plurality of remote...
7852228 Fan system and detector thereof  
A fan system including a motor, a driving unit, and a detector is disclosed. The driving unit is electrically connected to the motor and generates a driving signal to drive the motor and a...
7843152 Motor control apparatus  
A motor control apparatus comprises a control processing unit (3) creating a motor drive command, power supply processing units (2A to 2D) supplying a driving voltage to a motor, and a signal...
7782217 System and method for monitoring motor  
A system (100) for monitoring a motor (202) includes a potential-detecting module (102), a potential-comparing module (104) and a motor-monitoring module (106). The potential-detecting module is...
7755499 Detecting apparatus for detecting operation of fan  
A detecting apparatus for detecting operation of a fan, includes a first current module disposed at an airflow path of the fan, a second current module insulated from the airflow, and an...
7741973 Drive control device  
A drive control device that includes: a driving circuit to drive a driving source; a condition detector to detect the condition of at least one of the driving source and the driving circuit to...
7733237 Signaling device and method of controlling the device  
Method for controlling a signalling device inserted in an automatism of gates (G), movable barriers, doors or the like, and having at least one warning device (L, BZ), characterized in that it...
7705744 Monitoring systems and methods for monitoring the condition of one or more components of an electrical device  
Methods and systems for monitoring a component of an electrical device and/or a brush of a brush holder assembly are disclosed. One method includes receiving data from a plurality of remote...
7667422 Fan with failure detecting function  
A fan with failure detecting function includes a power input terminal, a current limiting resistor, a light emitting diode (LED), and a fan motor. The power input terminal is coupled to the anode...
7646308 System for monitoring electrical equipment and providing predictive diagnostics therefor  
A system monitors electrical equipment and provides predictive diagnostics therefor. The system includes sensors located at or about the electrical equipment. The sensors sense information...
7639152 Fan failure alarm device  
A fan failure alarm device includes a first digital-analog converting circuit (200), a first diode (D11), a switching circuit (260), an input-output (I/O) controller (U11), and an alarm circuit...
7636030 Security layers for wireless industrial control user interface  
A wireless user interface is operable to interface with an industrial control system including a device operable to store a first password and a wireless interface module operable to store a...
7629723 Detection of the amount of wear on a motor drive system  
A method and a device, respectively, for detecting the amount of wear on the carbon brush drive system of an electrically commutated d.c. motor which is used, for example, in the form of a pump...
7605712 Power generator and power generator auxiliary monitoring  
A generator monitoring system and method includes a plurality of sensors (12) disposed within a generator enclosure (18) to sense health conditions of a generator (10) housed within the enclosure....
7592772 Stator inter-turn fault detection of synchronous machines  
A fault detection system using field current and rotor search coil voltage harmonics is provided. The technology is capable of detecting an inter-turn fault unambiguously and rapidly in a...
7545163 Three phase motor diagnostics and phase voltage feedback utilizing a single A/D input  
A motor system utilizes a single feedback output to determine various fault states for a 3-phase motor in a non-operational condition. The same single feedback output may be used to determine the...
7535372 Method for measuring the operating state of a synchronous motor using composite power angle meter  
The present invention discloses a method for measuring the operating state of synchronous motor by using composite power angle meter, the method comprising steps of: a) obtaining various signals...
7525443 Method and apparatus for machine state quantification in machinery management systems  
A method for determining a steady state operating condition of a machine includes determining whether a current machine speed of the machine is within a defined range of operation, determining...
7460022 Device for protecting electric motors  
A device for the explosion protection of electric motors or similar electrical devices such as pumps, in which the motor has a protective housing and works together with an interconnected sensor...
7450022 Bearing failure identification system  
A bearing failure detection system includes a thermal protector switch circuit having a wear strip located within an interior of a motor stator. In response to bearing failure or wear above a...

Matches 1 - 50 out of 248 1 2 3 4 5 >