About 28 results
https://drivepatents.com/patents/1395305 · 1 Apr 2026
A controller for a linear drive system includes compensation of a reference signal as the mover approaches a commanded position along a track. The compensation value is added once as the vehicle approaches the commanded position, adjusting the reference si...
https://drivepatents.com/patents/1393183 · 11 Mar 2026
A system and method for detecting integrity of a position for a mover in an independent cart system, includes receiving multiple first position feedback signals at a first processing core and receiving multiple second position feedback signals at a second ...
https://drivepatents.com/patents/941741 · 15 Jun 2016
A linear controlled motion system include a track formed from one or more track sections (104) and having at least one mover mounted to the track and effective for receiving articles at one location and transporting the articles to another location. The sy...
https://drivepatents.com/patents/947783 · 9 Dec 2015
Methods an apparatus are presented for identifying ground fault locations in multi-drive systems in which individual drives perform self-diagnosis for detected faults based on an identified fault signal frequency while the system drives continue operation,...
https://drivepatents.com/patents/961579 · 15 Apr 2015
A PLC or other industrial controller (44) programmed to locate ground faults in a networked multi-drive system through network communications messaging to automatically place networked motor drives in various operational states to isolate individual drives...
https://drivepatents.com/patents/966128 · 17 Dec 2014
A self-discharging capacitor may include a capacitor and a resistor coupled in parallel to the capacitor. The self-discharging capacitor may also include a housing such that the capacitor and the resistor may be enclosed within the housing. The housing may...
https://drivepatents.com/patents/966355 · 10 Dec 2014
A system configured to reduce the amplitude of reactive current present on a DC bus (13) shared by multiple inverters (15) is disclosed. The start of the switching period for the modulation routines of each inverter (15) is synchronized, and a carrier phas...
https://drivepatents.com/patents/966975 · 26 Nov 2014
A transport system comprising linear motor modules utilized both straight and curved track modules, with movers displaced on the track modules by control of power applied to coils of the modules. Curved track modules have modified spline geometries to prov...
https://drivepatents.com/patents/969896 · 17 Sep 2014
Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between g...
Regenerative voltage doubler rectifier, voltage SAG/SWELL correction apparatus and operating methods
https://drivepatents.com/patents/971363 · 13 Aug 2014
Single and multiphase regenerative voltage doubler rectifiers, sag/swell corrector apparatus, and operating methods are presented in which rectifier switching devices are selectively pulse width modulated for regenerative load conditions and for regenerati...