Control system for powering plural inductive loads from a...

H - Electricity – 05 – B

Patent

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Details

H05B 6/06 (2006.01) H02M 7/48 (2006.01)

Patent

CA 2111069

A control system for power delivered to an inductive load includes the ability to share a single inverter power source among plural inductive loads. The plural inductive loads may have different resonant frequencies. The control system causes a preselected amount of power to be drawn from the inverter power source and delivered to the loads in a time-shared manner. The control system varies the phase shift between load voltage and load current and selectably adjusts the amount of variation in response to overshoot and/or undershoot of power drawn from the inverter and delivered to a load which can occur when switching between loads.

Cette invention concerne un système de commande d'alimentation de charges inductives offrant la possibilité d'alimenter plusieurs de ces charges à partir d'une seule source à inverseur. Ces charges peuvent avoir des fréquences de résonnance différentes. Le système de commande fait en sorte qu'une quantité prédéterminée de courant soit appelée de la source à inverseur et relayée aux diverses charges en temps partagé. Le système fait varier le retard de phase entre la tension et le courant et règle l'amplitude de la variation en fonction du dépassement et/ou de l'insuffisance de l'appel de courant qui peuvent se produire à la commutation entre charges.

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