Reduced EMI Inverter Dead Time Compensator System and Method Thereof
OwnerGiovanna Oriti, Alexander Lloyd Julianinventors
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Abstract
A reduced common mode voltage inverter comprising: an energy source, the energy source being electrically coupled to multiple half-bridge circuits; each of the multiple half-bridge circuits having an output and each output being electrically coupled to one or more phase loads; a control circuit being electrically coupled to multiple transistors of each of the multiple half-bridge circuits; and a dead time compensator, the dead time compensator configured to delay commutation of the multiple half-bridge circuits.
Claims20
A reduced common mode voltage inverter comprising:
- an energy source electrically coupled to multiple half-bridge circuits;
- each of the multiple half-bridge circuits having an output and each output electrically coupled to one or more phase loads;
- a control circuit electrically coupled to multiple transistors of each of the multiple half-bridge circuits;
- and
- a dead time compensator to delay commutation of the multiple half-bridge circuits.
A micro-grid common mode voltage reducing four-legged three phase inverter comprising:
- a distributed energy source electrically coupled to four half-bridge circuits;
- the four half-bridge circuits coupled to a four wire three phase output;
- a control circuit electrically coupled to multiple transistors of the multiple half-bridge circuits, and controls the multiple transistors by pulse density modulation;
- and
- a dead time compensator configured to delay commutation of the multiple half-bridge circuits.
A method of reducing common mode EMI in a four-legged inverter, the method comprising:
- by a four-legged three phase inverter:
- providing a distributed energy source, wherein the distributed energy source is a direct current (DC) source;
- providing a DC current to four half-bridge circuits modulating the DC current, by a control circuit pulse density modulating (PDM) to generate an alternating current (AC) sinusoidal electrical power output;
- and
- dead time compensating, by a control circuit, wherein the control circuit delays the commutation of the four half-bridge circuits.
Dependencies are inferred from the claim text.