Multiple inverters with overcurrent and shoot-through protection
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorNagataka Seki
Life of this patent
Estimating the term…
Abstract
A multiple inverter has an input shut-off circuit receiving a DC energy input and providing two DC outputs; two unit inverters coupled to the input shut-off circuit, each including switching elements, for respectively converting the DC outputs into two AC outputs; and a control circuit coupled to the unit inverters for detecting an accidental overcurrent due to a shoot-through of the switching elements, and turning off the unit inverters. The input shut-off circuit includes circuit elements for interrupting a current path of the DC energy input when the control circuit detects the accidental or faulty overcurrent.
Claims17
A multiple inverter comprising:
- input shut-off means for receiving a DC energy input of the multiple inverter and providing two or more DC outputs wherein said input shut-off means includes at each DC input circuit of said unit inverters a chopper circuit, each of said chopper circuits allowing a current of said DC energy input to pass therethrough but blocking a current from one of said unit inverters to another unit inverter;
- two or more unit inverters coupled to said input shut-off means for respectively converting said DC outputs into two or more AC outputs, each of said unit inverters including switching elements;
- and
- control means coupled to at least one of said unit inverters for detecting an accidental or faulty overcurrent due to a shoot-through of said switching elements and for turning off said unit inverter, wherein a current path of said DC energy input is interrupted by said input shut-off means when the control means detect said accidental overcurrent.
A multiple inverter comprising:
- input shut-off means for receiving a DC energy input of the multiple inverter and providing two or more DC outputs wherein said input shut-off means includes at each DC input circuit of said unit inverters a unidirectional current conductor, each of said urdirectional current conductors allowing a current of said DC energy input to pass therethrough but blocking a current from one of said unit inverters to another unit inverter;
- two or more unit inverters coupled to said input shut-off means for respectively converting said DC outputs into two or more AC outputs, each of said unit inverters including switching elements;
- and
- control means coupled to at least one of said unit inverters for detecting an accidental or faulty overcurrent due to a shoot-through of said switching elements and for turning off said unit inverter, wherein a current path of said DC energy input is interrupted by said input shut-off means when the control means detects said accidental overcurrent.
Dependencies are inferred from the claim text.