Can 10KV high-voltage motors be equipped with variable frequency drives?
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Can 10KV high-voltage motors be equipped with variable frequency drives, with a motor power of over 300KW?
It can be used, but the cost of high-voltage frequency conversion is high; alternatively, the following method can be employed for speed control. This product has been in use for many years and is quite mature. 1. Speed control via hydraulic coupling 2. Speed control using a liquid resistance cabinet
Whether a high-voltage frequency converter can be used depends mainly on the operating conditions of the load driven by the motor. High-voltage frequency converters are already available on the market, but they are extremely expensive, apparently costing over one million. I wonder if it’s necessary to adopt it where you are.
It is possible to use high-voltage frequency converters; if the equipment in your company is feasible from a design perspective, you still need to take into account the high cost in RMB. Additionally, such devices generate harmonic distortions in the electricity supply, and the power authorities will require you to address this issue.
High-voltage frequency converters do not generate significant harmonics; the price of a 300KW high-voltage frequency converter is around 500,000
There’s no need to purchase a high-voltage frequency converter – you don’t know this yet? The manufacturer installs it for free, on the condition that you pay for the amount of electricity saved by this motor over several years. Go and find out; that’s exactly how we do it here – we pay for the electricity saved over a ten-year period