scispace - formally typeset
Patent

Electronically commutated electric motor, and method for controlling one such motor

Reads0
Chats0
TLDR
In this paper, an electronically commutated electric motor (10) comprising at least one stator winding phase (12, 14) and a method for controlling one such motor was presented.
Abstract
The invention relates to an electronically commutated electric motor (10) comprising at least one stator winding phase (12, 14), and a method for controlling one such motor. The aim of the invention is to reduce power loss. To this end, the duration of the intervals (T-t) between the pulses of the control signals for feeding the at least one stator winding phase (12, 14) is essentially constant.

read more

Citations
More filters
Patent

Gas valve with valve leakage test

TL;DR: In this article, a valve leakage test is performed on a valve assembly including a valve body with a first valve and a second valve, where the valves may be positioned across a fluid path in the valve body and an intermediate volume between the valves.
Patent

Gas valve with electronic valve proving system

TL;DR: In this paper, a valve assembly may be configured to perform a valve proving test as part of an operational cycle of a combustion appliance coupled to the valve assembly, and the valve controller may then output a signal if the measure related to a pressure change rate in the intermediate volume meets and/or exceeds a threshold value.
Patent

Gas valve with electronic proof of closure system

TL;DR: In this article, a valve assembly may include a valve body having an interior and an exterior, a valve or valve sealing member positioned in the valve body, a sensor element (e.g., a magnet and/or a ferrous core) secured relative to the valve sealing members and a sensor (i.e., a magnetic field sensor) positioned outside of the interior of the valve assembly.
Patent

Gas valve with communication link

TL;DR: In this article, the authors describe a valve assembly with an inlet port, an outlet port, and a fluid path extending between the inlet and outlet ports, one or more valve actuators for selectively moving respective valves, and sensors for sensing the parameters within the fluid path and a controller secured relative to the valve body and in communication with the sensors.
Patent

Gas valve with electronic health monitoring

TL;DR: In this article, a valve assembly may include a valve body, a valve actuator for selectively moving the actuator, one or more sensors in communication with the fluid path, a controller secured relative to the valve body and communicating with sensors, and memory operatively coupled to the controller.
References
More filters
Patent

PWM system for ECM motor

TL;DR: In this article, a pulse width modulation control system for an electronically commutated motor (ECM) adapted to be energized from a DC power source includes a power switching system coupled in circuit with each winding stage terminal of the ECM.
Patent

Load current limiting circuit for PWM controlled brushless motor

TL;DR: In this article, the authors propose a PWM circuit for controlling a current in a load, which includes an AND gate having first and second input structure and an output structure, with the AND gate output structure connected to the power switch for operating the switch in consideration of the comparison between the peak reference voltage signal and instantaneous output voltage signal.