Inverter control apparatus and control method thereof
AssigneeLsis Co., Ltd.
InventorKwang Woon Kim
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Abstract
An apparatus and method for controlling an operation of an inverter are provided. In the inverter control apparatus, an operation signal input unit detects a current of each phase output from an inverter. An error detecting unit detects whether there is a fault of the inverter on the basis of the current detected by the operation signal input unit. A controller controls driving of the inverter according to a type of the fault detected by the error detecting unit. A storage unit stores a kind of fault of the inverter and a corresponding fault type on the basis of the current detected in the operation signal detecting unit.
Claims14
An inverter control apparatus comprising:
- an operation signal input unit detecting a current of each phase output from an inverter;
- an error detecting unit detecting whether there is an inverter fault based on the detected current;
- a controller controlling driving of the inverter according to a type of the detected inverter fault;
- and
- a storage unit storing a fault state of the inverter and a corresponding fault type based on the detected current,
- wherein the controller classifies the detected fault into a first fault type limiting an input command value according to the detected fault, a second fault type disabling the driving of the inverter, a fault third type temporarily disabling the driving of the inverter and re-enabling the driving of the inverter according to a condition to drive the inverter, and a fourth fault type turning on/off the driving of the inverter, and
- wherein the controller outputs an inverter driving control signal corresponding to the detected fault type according to a preset priority.
An inverter control method comprising:
- detecting a current of each phase output from an inverter;
- detecting whether there is an inverter fault based on the detected current;
- storing a fault state of the inverter and a corresponding fault type based on the detected current;
- and
- controlling driving of the inverter according a type of the detected inverter fault;
- wherein controlling the driving of the inverter comprises classifying the detected fault into a first fault type limiting an input command value according to the detected fault, a second fault type disabling the driving of the inverter, a third fault type disabling the driving of the inverter and then re-enabling the driving of the inverter according to a condition to drive the inverter, and a fourth fault type turning on/off the driving of the inverter, and
- wherein controlling the driving of the inverter further comprises outputting an inverter driving control signal corresponding to the detected fault type according to a preset priority.
Dependencies are inferred from the claim text.