| Abstract |
High-speed drive systems, applied for vacuum pumps, laser cooling vacuum blowers or high-speed cutting,
have to fulfill some specific requirements. Since cooling of the rotor is a fundamental problem in
these applications, permanent magnet synchronous motors have been chosen for the proposed drive
system. Combined with the specific speed controlled inverters and LC-output filters, optimized solutions
for high-speed applications are achieved. Due to its high switching frequency up to 64 kHz, the
proposed three-level inverter topology facilitates sinusoidal currents with very small ripple at very high
output frequencies.
This new drive system offers an increasing performance regarding the dynamic of the control and the
rotor losses, and at the same time the volume and costs of the filters and the overall system are reduced. |
