| Title |
Sensorless Control of High-speed Type PMSM in Wide Speed Range using an Iterative Adaptive Flux Observer |
| Authors |
Jong-Moo Kim ; Jeong-Won Choi ; Suk-Gyu Lee |
| Keywords |
Adaptive flux observer; PMSM; Sensorless control; High speed motor |
| Abstract |
In this paper, the modular line-connected photovoltaic PCS (photovoltaic power conditioning system) is proposed. A step-up DC-DC converter using a active-clamp circuit and a dual series-resonant rectifier is proposed to achieve a high efficiency and a high input-output voltage ratio efficiently. An IncCond (incremental conductance) MPPT (maximum power point tracking) algorithm that improves MPPT characteristic is used. The PV module current is estimated without using a DC current sensor. By control a inverter using a linearized output current controller, a unity power factor is achieved. All algorithms and controllers are implemented on a single-chip microcontroller and the superiority of the proposed DC-DC converter and controllers is proved by experiments. |