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The low-voltage ride-through (LVRT) capability of a MW-Level variable speed wind turbine with a direct-driven permanent magnet synchronous generator (PMSG) is a hot topic these days. To prevent over-rated dc-link dynamic voltage, a novel dc-link voltage control scheme is proposed. In this paper comparing with traditional control method, the generator-side converter uses a doubly closed loop namely...
In this paper, we present a performance study of a variable pitch wind turbine with a Permanent Magnet Synchronous Generator (PMSG). The control strategy used Maximum Power Point Tracking (MPPT) below the rated speed, which corresponds to low and high wind speed, and the maximum energy can be captured from the wind. The Pitch angle control which is the most common means for adjusting the aerodynamic...
In this paper, a novel grid integration system for a variable-speed wind turbine using Interior Permanent Magnet Synchronous Generator (IPMSG) is developed. The power-conditioning system consists of a series-type 12-pulse diode rectifier powered by a phase shifting transformer and then cascaded to a PWM voltage source inverter. The series-type 12-pulse diode rectifier of the generator-side converter...
This paper presents a novel control strategy for variable speed permanent magnet synchronous generator (PMSG) based wind-battery hybrid system in an isolated network. The proposed strategy comprises of chopper based speed control of generator for maximum power point tracking (MPPT) under varying wind conditions. A buck-boost converter is used to maintain constant DC-Link voltage and to interface an...
Using a boost chopper to implement the maximum power point tracking (MPPT) for a PMSG-based small-scale wind turbine is described in this paper. By analyzing the characteristics of the boost chopper, the optimal duty ratio was theoretically determined by the equivalent resistance of the load. Then the duty ratio was used as a reference instruction to control the output power of the permanent magnet...
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