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Title: DC switching regulated power supply for driving an inductive load

Abstract

A dc switching regulated power supply for driving an inductive load is provided. The regulator basic circuit is a bridge arrangement of diodes and transistors. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. A dc power supply is connected to the input of the bridge and the output is connected to the load. A servo controller is provided to control the switching rate of the transistors to maintain a desired current to the load. The regulator may be operated in three stages or modes: (1) for current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned off, and load current flywheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switchingmore » rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays off, allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load.« less

Inventors:
Issue Date:
OSTI Identifier:
6671703
Application Number:
ON: DE84014238
Assignee:
Dept. of Energy EDB-84-140520
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; POWER SUPPLIES; SWITCHES; DC SYSTEMS; ELECTRIC CURRENTS; INDUCTION; CURRENTS; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; ENERGY SYSTEMS; EQUIPMENT; POWER SYSTEMS 420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)

Citation Formats

Dyer, G.R. DC switching regulated power supply for driving an inductive load. United States: N. p., 1983. Web.
Dyer, G.R. DC switching regulated power supply for driving an inductive load. United States.
Dyer, G.R. Tue . "DC switching regulated power supply for driving an inductive load". United States.
@article{osti_6671703,
title = {DC switching regulated power supply for driving an inductive load},
author = {Dyer, G.R.},
abstractNote = {A dc switching regulated power supply for driving an inductive load is provided. The regulator basic circuit is a bridge arrangement of diodes and transistors. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. A dc power supply is connected to the input of the bridge and the output is connected to the load. A servo controller is provided to control the switching rate of the transistors to maintain a desired current to the load. The regulator may be operated in three stages or modes: (1) for current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned off, and load current flywheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays off, allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {11}
}