Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 182-192 |
| Number of pages | 11 |
| Journal | Renewable Energy |
| Volume | 87 |
| Issue number | 1 |
| Early online date | 21 Oct 2015 |
| DOIs | |
| Publication status | Published - Mar 2016 |
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Keywords
- Renewable hydrogen production
- Micro/small wind turbine
- Electrolysis
- Maximum power point tracking
- Hill-climb search
Cite this
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Micro/small wind turbine power control for electrolysis applications. / Dixon, Christopher (Lead / Corresponding author); Reynolds, Stephen; Rodley, David.
In: Renewable Energy, Vol. 87, No. 1, 03.2016, p. 182-192.Research output: Contribution to journal › Article
TY - JOUR
T1 - Micro/small wind turbine power control for electrolysis applications
AU - Dixon, Christopher
AU - Reynolds, Stephen
AU - Rodley, David
PY - 2016/3
Y1 - 2016/3
N2 - This paper compares the efficiency of three power converter and maximum power point tracking (MPPT) systems for connecting a micro/small wind turbine to an electrolyser stack: a conventional DC–DC voltage converter with hill-climb search (HCS); a novel variable electrolyser cell load controller where the number of series cells varies to allow MPPT; a novel hybrid DC–DC voltage converter integrated with direct-connect circuitry, variable cell control and lookup-based MPPT. The variable cell and hybrid converters demonstrated superior performance, averaging efficiencies 2–4% higher than the conventional converter, reaching near ideal at a wind speed of 7.7 ms−1 due to direct connection. MPPT function measured electrolyser current as a power reference. HCS performed MPPT at approx. 98% of ideal but requiring very advanced function including variable step size and intelligent perturbation to achieve this during dynamic conditions. The variable cell and hybrid converters produced superior MPPT (based on lookup data) to HCS. This demonstrates alternative novel power control and MPPT approaches for low-cost and efficient hydrogen production from micro/small wind-electrolysis systems.
AB - This paper compares the efficiency of three power converter and maximum power point tracking (MPPT) systems for connecting a micro/small wind turbine to an electrolyser stack: a conventional DC–DC voltage converter with hill-climb search (HCS); a novel variable electrolyser cell load controller where the number of series cells varies to allow MPPT; a novel hybrid DC–DC voltage converter integrated with direct-connect circuitry, variable cell control and lookup-based MPPT. The variable cell and hybrid converters demonstrated superior performance, averaging efficiencies 2–4% higher than the conventional converter, reaching near ideal at a wind speed of 7.7 ms−1 due to direct connection. MPPT function measured electrolyser current as a power reference. HCS performed MPPT at approx. 98% of ideal but requiring very advanced function including variable step size and intelligent perturbation to achieve this during dynamic conditions. The variable cell and hybrid converters produced superior MPPT (based on lookup data) to HCS. This demonstrates alternative novel power control and MPPT approaches for low-cost and efficient hydrogen production from micro/small wind-electrolysis systems.
KW - Renewable hydrogen production
KW - Micro/small wind turbine
KW - Electrolysis
KW - Maximum power point tracking
KW - Hill-climb search
U2 - 10.1016/j.renene.2015.09.055
DO - 10.1016/j.renene.2015.09.055
M3 - Article
VL - 87
SP - 182
EP - 192
JO - Renewable Energy
JF - Renewable Energy
SN - 0960-1481
IS - 1
ER -