Inverter for common mode voltage cancellation
First Claim
1. An inverter comprising:
- a positive direct current (DC) line;
a negative DC line; and
a plurality of inverter legs, wherein each inverter leg comprisesa first switch;
a first switch control line connected to the first switch and configured to receive a first control signal to control an on or off state of the first switch;
a second switch;
a second switch control line connected to the second switch and configured to receive a second control signal to control an on or off state of the second switch;
a third switch;
a third switch control line connected to the third switch and configured to receive the first control signal to control an on or off state of the third switch;
a first connector line connected between the first switch and the second switch; and
a second connector line connected between the second switch and the third switch;
wherein the first switch, the second switch, and the third switch are connected sequentially in series between the positive DC line and the negative DC line;
wherein the first connector line is configured to be connected to a first winding of an electric machine;
wherein the second connector line is configured to be connected to a second winding of the electric machine;
wherein the second control signal is complementary to the first control signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An inverter includes a plurality of inverter legs that each includes first, second, and third switches. A first control line connected to the first switch receives a first control signal. A second control line connected to the second switch receives a second control signal. A third control line connected to the third switch receives the first control signal. The first, second, and third switches are connected sequentially in series. A first connector line is connected between the first switch and the second switch and to a first winding of an electric machine. A second connector line is connected between the second switch and the third switch and to a second winding of the electric machine. The second control signal is complementary to the first control signal.
28 Citations
20 Claims
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1. An inverter comprising:
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a positive direct current (DC) line; a negative DC line; and a plurality of inverter legs, wherein each inverter leg comprises a first switch; a first switch control line connected to the first switch and configured to receive a first control signal to control an on or off state of the first switch; a second switch; a second switch control line connected to the second switch and configured to receive a second control signal to control an on or off state of the second switch; a third switch; a third switch control line connected to the third switch and configured to receive the first control signal to control an on or off state of the third switch; a first connector line connected between the first switch and the second switch; and a second connector line connected between the second switch and the third switch; wherein the first switch, the second switch, and the third switch are connected sequentially in series between the positive DC line and the negative DC line; wherein the first connector line is configured to be connected to a first winding of an electric machine; wherein the second connector line is configured to be connected to a second winding of the electric machine; wherein the second control signal is complementary to the first control signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electric machine drive comprising:
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a controller comprising a first control signal line; and a second control signal line, wherein the controller is configured to generate a first control signal on the first control signal line and to generate a second control signal on the second control signal line, wherein the first control signal is complementary to the second control signal; and a positive direct current (DC) line; a negative DC line; and an inverter comprising a plurality of inverter legs, wherein each inverter leg comprises a first switch; a first switch control line connecting the first control signal line to the first switch to receive the first control signal; a second switch; a second switch control line connecting the second control signal line to the second switch to receive the second control signal; a third switch; a third switch control line connecting the first control signal line to the third switch to receive the first control signal; a first connector line connected between the first switch and the second switch; and a second connector line connected between the second switch and the third switch; wherein the first switch, the second switch, and the third switch are connected sequentially in series between the positive DC line and the negative DC line; wherein the first connector line is configured to be connected to a first winding of an electric machine; wherein the second connector line is configured to be connected to a second winding of the electric machine; wherein the first control signal controls an on or off state of the first switch and the third switch together; wherein the second control signal controls an on or off state of the second switch. - View Dependent Claims (8, 9, 10, 11)
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12. An electric machine system comprising:
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a controller comprising a first control signal line; and a second control signal line, wherein the controller is configured to generate a first control signal on the first control signal line and to generate a second control signal on the second control signal line, wherein the first control signal is complementary to the second control signal; a positive direct current (DC) line; a negative DC line; an inverter comprising a plurality of inverter legs, wherein each inverter leg comprises a first switch; a first switch control line connecting the first control signal line to the first switch to receive the first control signal; a second switch; a second switch control line connecting the second control signal line to the second switch to receive the second control signal; a third switch; a third switch control line connecting the first control signal line to the third switch to receive the first control signal; a first connector line connected between the first switch and the second switch; and a second connector line connected between the second switch and the third switch; wherein the first switch, the second switch, and the third switch are connected sequentially in series between the positive DC line and the negative DC line; wherein the first control signal controls an on or off state of the first switch the third switch together; wherein the second control signal controls an on or off state of the second switch; and an electric machine comprising a stator; a rotor configured to rotate relative to the stator; a first winding wound around at least a first portion of the stator; and a second winding wound around at least a second portion of the stator; wherein the first connector line is configured to be connected to the first winding; wherein the second connector line is configured to be connected to the second winding. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification