Predictive control system
AssigneeNagasaki University, National University Corporati
InventorFujio Kurokawa
Life of this patent
Estimating the term…
Abstract
The first sampling measurement value compares whether to exceed a prescribed threshold and judges the control part at the sampling time. The control part compares whether the first sampling measurement value exceeds a prescribed threshold. When the actual measurement value doesn't exceed a prescribed threshold, the control part predict the first sampling value at the next sampling time. [1] When the first sampling the predicting value doesn't exceed the threshold value, the status of the switch is maintained, [2] When the first sampling the predicting value exceeds the threshold value, the time when the movement of the switch should be changed is calculated and the status of the switch is changed at time concerned.
Claims8
The predictive control system for the power converter circuit that transfers the input side power to the output side by switching the switch with on-status or off-status, and that has the sampling part and the control part,
- the said sampling part detects one or more of (a), (b), (c), (d) over twice as the measurements among one cycle, wherein,
- (a) the current that flows the said switch in the power converter circuit,
- (b) the current that flows the element except the said switch in the power converter circuit,
- (c) the terminal voltage that occurs between the terminals of the said switch in the power converter circuit,
- (d) the terminal voltage that occurs between the terminals of the element except the said switch in the power converter circuit,
- the said control part
- compares and judges whether the first sampling measurement value exceeds a prescribed threshold (the threshold value set to side where the first sampling measurement value decreases, or the threshold value set to side where the first sampling measurement value increases,) downward or up at the sampling time,
- predicts the first sampling value at the next sampling time, when the sampling measurement value doesn't exceed a prescribed threshold concerned (this value is said, “The first sampling predicting value”.),
- [1] when the said first sampling prediction value doesn't exceed the said threshold value, the status of the said switch is maintained,
- [2] when the said first sampling prediction value exceeds the said threshold value, calculated the time to change the status of the switch, changes the status of the switch at the time.
Dependencies are inferred from the claim text.