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Gold Prospecting
Gold localities & information
Windfarm Karara Qld, impact on nearby GPA?
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<blockquote data-quote="Jengel79" data-source="post: 647177" data-attributes="member: 22176"><p>How does windfarm generators work? Well, different designs has different solutions. Old style has 3 phase generator with gearbox and maybe a transformer. Generator has excitation to control voltage which generate EMI but limited due to low current. Blade pitch motors require digital controllers to drive motors. Steady winds no problem as it is set once. Gusty wind require more changes causing more EMI. Other designs has a generator with a large AC converter to eiminate the gearbox. They tend to have much more EMI and digital noise. </p><p>All these equipment must comply to EMI regulations and it is more likely the power line side and sub stations causing the noise than the wind mills.</p></blockquote><p></p>
[QUOTE="Jengel79, post: 647177, member: 22176"] How does windfarm generators work? Well, different designs has different solutions. Old style has 3 phase generator with gearbox and maybe a transformer. Generator has excitation to control voltage which generate EMI but limited due to low current. Blade pitch motors require digital controllers to drive motors. Steady winds no problem as it is set once. Gusty wind require more changes causing more EMI. Other designs has a generator with a large AC converter to eiminate the gearbox. They tend to have much more EMI and digital noise. All these equipment must comply to EMI regulations and it is more likely the power line side and sub stations causing the noise than the wind mills. [/QUOTE]
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Gold Prospecting
Gold localities & information
Windfarm Karara Qld, impact on nearby GPA?
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