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The paper proposes a new algorithm and implementation of a motion sensorless control system for permanent magnet synchronous drive for high-speed and high-power applications. The experiments were carried out on a 112 kW IPMSM with rated speed of 48,000 r/min in a very wide speed range — from standstill up to the rated speed. The observer is based on the rotor flux components expressed in the hypothetical-estimated...
The paper describes a new algorithm for speed and position estimation for Interior Permanent Magnet Synchronous Motor. The estimator is implemented in a vector controlled system for motion control of a super-high speed (tens of thousands of revolutions per minute) and high power (hundreds of kilowatts) IPMSM. The estimator uses the so-called rotor-flux components in the estimated rotor reference frame...
In this paper a new AC/DC unidirectional switching cell with nine voltage levels is proposed. It is called Stacked-Flying-Capacitors-Coupled-Inductors (SFC2I) and can be connected between an AC current source and a DC voltage source. The novelty of 9L-SFC2I topology is based on two cascaded stages that work at different currents, different voltage and different switching frequency. The first stage...
The paper proposes an implementation of a motion sensorless control system in a very wide speed range — from zero speed operation, based on direct and quadrature inductance components of the stator flux linkage for the interior permanent magnet synchronous motor-IPMSM, without signal injection. The proposed observer is developed using the Lyapunov design, resulting a scheme with a full observer for...
The paper deals with an optimized Unified Power Quality Conditioner (UPQC), which aims at the integration of series and shunt active power filters with minimum VA loading of the UPQC. The series active filter is a Dynamic Voltage Restorer (DVR), that operates in two functioning modes. During the unbalanced voltage sag/swell at the input side, the DVR maintains the rated voltage at the load side. It...
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