Abstract
This paper presents dual inverter power supply open-end winding of surface mounted permanent magnet synchronous motor (OW-SPMSM) drive system for fans and pumps energy saving by V/f control. On the principle of OW-SPMSM drive system, this paper puts forward a unified Sine wave pulse width modulation strategy (SPWM) of dual inverter, which is easy to real time implementation for the calculation of this method is less than SVPWM, its performance is as good as the SVPWM in terms of harmonic power balance. Accordingly, a power factor closed loop control was introduced into the drive system to achieve stable volts/hertz (V/F) control. The system simulation model was investigated in detail; its results show that the proposed drive system has greatly improved the system dynamic performance.
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