| URN |
etd-0720114-121454 |
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| Author |
Gwo Bin Wu |
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| Author's Email Address |
No Public. |
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| Statistics |
This thesis had been viewed 5577 times. Download 39 times. |
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| Department |
Electrical Engineering |
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| Year |
2013 |
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| Semester |
2 |
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| Degree |
Master |
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| Type of Document |
|
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| Language |
English |
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| Title |
Maximum Power Point Tracking with Ripple Current Orientation for Photovoltaic Panel |
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| Date of Defense |
2014-07-18 |
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| Page Count |
73 |
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| Keyword |
Boost converter
Maximum power point tracking
Ripple current orientation
Photovoltaic panel
Phase deviation
|
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| Abstract |
This thesis proposes a novel maximum power point tracking (MPPT) technique on basis of dynamic characteristics of the photovoltaic (PV) panel with a boost converter which is commonly set to step up the voltage level for the load requirement. The boost converter draws a rippled current from the PV panel with designated circuit parameters. Experimental tests reveal that the rippled current and voltage of a PV panel are always out of phase when the peak of the current is less than the current at the maximum power point (MPP), but begins to deviate once the current peak has reached the MPP current.
As compared with conventional methods that measure the average output current, voltage or power of the PV panel to achieve MPPT, the proposed MPPT method with ripple current orientation tracks the MPP based on the detected instantaneous phase deviation of the PV voltage and current. The MPP can be oriented by the peak of the rippled current once the peak current has reached the MPP current. By continuously detecting the phase difference, the PV panel can be operated at the MPP under constant atmosphere condition and can quickly move to the new MPP when the operating condition has been changed. Besides, with the proposed MPPT method, the electrolytic capacitor can be excluded from the output terminal of the PV panel. A laboratory PV system with a phase-difference detection circuit, a sampling circuit, and a micro-controller are set up to verify the feasibility and effectiveness of the MPPT control strategy. |
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| Advisory Committee |
Chih Chiang Hua - chair
Hung-Liang Cheng - co-chair
Yaow-Ming Chen - co-chair
Hau-Chen Yen - co-chair
Chin-Sien Moo - advisor
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| Files |
Indicate in-campus at 5 year and off-campus access at 5 year. |
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| Date of Submission |
2014-08-20 |
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