Reversible buck-boost chopper circuit, and inverter circuit with the same
First Claim
1. A reversible buck-boost chopper circuit connected between a DC power source and a load, the circuit comprising:
- a first half-bridge circuit with a first output terminal comprising;
a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and
a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;
a second half-bridge circuit with a second output terminal comprising;
a third switching element having a high-side main electrode connected to a high-side terminal of the load; and
a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode connected to a low-side terminal of the load and the negative electrode of the DC power source; and
a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
In a reversible buck-boost chopper circuit, a first half-bridge circuit has a first switching element with a high-side main electrode connected to a positive electrode of a DC power source, and a second switching element is connected to the first switching element at a first output terminal. A low-side main electrode of the second switching element is connected to a negative electrode of the DC power source. A second half-bridge circuit has a third switching element with a high-side main electrode connected to a high-side terminal of the load. A fourth switching element of the second half-bridge circuit is connected to the third switching element at a second output terminal. A low-side main electrode of the fourth switching element is connected to a low-side terminal of the load and the negative electrode. A reactor is connected between the first and second output terminals.
153 Citations
14 Claims
-
1. A reversible buck-boost chopper circuit connected between a DC power source and a load, the circuit comprising:
-
a first half-bridge circuit with a first output terminal comprising;
a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and
a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;
a second half-bridge circuit with a second output terminal comprising;
a third switching element having a high-side main electrode connected to a high-side terminal of the load; and
a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode connected to a low-side terminal of the load and the negative electrode of the DC power source; and
a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An inverter circuit connected between a DC power source and a load, the circuit comprising:
-
first and second reversible buck-boost chopper circuits, each of the first and second reversible buck-boost chopper circuits comprising;
a first half-bridge circuit with a first output terminal including a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and
a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;
a second half-bridge circuit with a second output terminal including a third switching element having a high-side main electrode connected to a high-side terminal of the load; and
a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode; and
a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit, wherein the high-side main electrode of the first reversible buck-boost chopper circuit is connected to a high-side terminal of the load, and the high-side main electrode of the second reversible buck-boost chopper circuit is connected to a low-side terminal of the load; and
a control circuit connected to the control terminal of each of the first to fourth switching elements of each of the first and second reversible buck-boost chopper circuits, and configured to;
turn on and off at least one of the first to fourth switching elements of the first reversible buck-boost chopper circuit to produce a first output voltage; and
turn on and off at least one of the first to fourth switching elements of the second reversible buck-boost chopper circuit to produce a second output voltage, wherein the first output voltage is applied to the high-side terminal of the load, and the second output voltage is applied to the low-side terminal of the load.
-
-
9. An inverter circuit connected between a DC power source and a polyphase motor with polyphase windings, the circuit comprising:
-
a plurality of reversible buck-boost chopper circuits, each of the plurality of reversible buck-boost chopper circuits comprising;
a first half-bridge circuit with a first output terminal including a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and
a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;
a second half-bridge circuit with a second output terminal including a third switching element having a high-side main electrode; and
a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode connected to the negative electrode of the DC power source; and
a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit, at the number of the reversible buck-boost chopper circuits being a positive integer multiple of a number of phase of the polyphase motor, and wherein each of the high-side main electrodes of the third switching elements of the plurality of the reversible buck-boost chopper circuits is connected to an end of at least one of the polyphase windings of the polyphase motor. - View Dependent Claims (10, 11, 12)
-
-
13. An inverter circuit connected between a DC power source and a load, the circuit comprising:
-
a reversible buck-boost chopper circuit, the reversible buck-boost chopper circuit comprising;
a first half-bridge circuit with a first output terminal including a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and
a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;
a second half-bridge circuit with a second output terminal including a third switching element having a high-side main electrode connected to a high-side terminal of the load; and
a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode connected to a low-side terminal of the load and the negative electrode of the DC power source; and
a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit; and
a control circuit connected to the control terminal of each of the first to fourth switching elements of the reversible buck-boost chopper circuit, and configured to;
turn on and off at least one of the first to fourth switching elements of the reversible buck-boost chopper circuit so as to cause the reversible buck-boost chopper circuit to serve as a DC to DC converter so that the reversible buck-boost chopper circuit produces a predetermined DC voltage, thereby applying the produced DC voltage to the load. - View Dependent Claims (14)
-
Specification