초록 ▼

A circuit for controlling the operation of switched reluctance machines (i.e., motor or generator) having a plurality of phase windings. The circuit slows down the initial "turn off" of the phase windings to eliminate an abrupt reduction in the current flowing therethrough. This reduces the impulse

A circuit for controlling the operation of switched reluctance machines (i.e., motor or generator) having a plurality of phase windings. The circuit slows down the initial "turn off" of the phase windings to eliminate an abrupt reduction in the current flowing therethrough. This reduces the impulse which excites mechanical oscillations in the motor/generator, reduces switching losses in the switching transistors, and reduces the number of harmonics.

대표청구항 ▼

[ Having thus described the invention, it is now claimed:] [1.] A controller for controlling the flow of current in a switched reluctance machine comprising:first and second controller circuits, each said first and second controller circuits including:a phase winding associated with a phase of the s

[ Having thus described the invention, it is now claimed:] [1.] A controller for controlling the flow of current in a switched reluctance machine comprising:first and second controller circuits, each said first and second controller circuits including:a phase winding associated with a phase of the switched reluctance machine,a commutation switch and a chopping switch for initiating modifications in the flow of current in the phase winding, andfirst and second freewheeling diodes associated with the phase winding;a capacitive circuit connected with said first and second controller circuits including:a capacitor having a first terminal and a second terminal,a first diode for carrying current to charge said capacitor, anda second diode for carrying current to discharge said capacitor; anda DC power supply for providing a supply voltage to the first and second controller circuits, the DC power supply having a first DC potential and a second DC potential.