US 2012/0268976 A1 · THREE-PHASE RECTIFIER CIRCUIT

Abstract

In one aspect of the invention, a three-phase rectifier circuit having three input terminals and two output terminals includes a three-phase diode bridge, three switching circuits, and a voltage source. The three-phase diode bridge has three pairs of first diodes electrically parallel-connected to the two output terminals. Each pair of first diodes has two first diodes series-connected defining a first node therebetween, and electrically connected to a corresponding input terminal at the first node. Each switching circuit has a first terminal, a second terminal and a plurality of switches electrically series-connected between the first and second terminals. The first and second terminals are respectively electrically connected to a second node and a third node, respectively between the first node and the two first diodes of the corresponding pair of first diodes. The voltage source is electrically parallel-connected between the two output terminals and electrically connected to each switching circuit.

Claims25

Dependent claims

A three-phase rectifier circuit having three input terminals and two output terminals, the three-phase rectifier circuit comprising:

(a) a three-phase diode bridge comprising three pairs of first diodes electrically parallel-connected to the two output terminals, wherein each pair of first diodes comprises two first diodes series-connected defining a first node therebetween, and electrically connected to a corresponding input terminal at the first node;
(b) three switching circuits, each switching circuit having a first terminal, a second terminal and a plurality of switches electrically series-connected between the first and second terminals, coupled to a corresponding pair of first diodes such that the first terminal is electrically connected to a second node between the first node and one first diode of the corresponding pair of first diodes and the second terminal is electrically connected to a third node between the first node and the other first diode of the corresponding pair of first diodes;
and
(c) a voltage source electrically parallel-connected between the two output terminals and electrically connected to each switching circuit.

1 more element

A three-phase rectifier circuit, comprising:

(a) a power factor correction (PFC) circuit having one or more inputs electrically coupled to an AC power source, and two outputs;
(b) a voltage source electrically coupled between the two outputs of the PFC;
and
(c) a plurality of modules interleavingly connected to each other, and electrically coupled to the voltage source.

1 more element

Dependencies are inferred from the claim text.

Three-phase rectifier circuit

Life of this patent

Three-phase rectifier circuit

Life of this patent

Abstract

Claims25