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This paper presents a power convertor design of a 60kW three-phase asymmetry half-bridge power convertor for switched reluctance machines (SRM). With established topology, voltage overshoot is sufficiently analyzed theoretically. To minimize voltage overshoot, this paper optimized the structure of main circuits, snubber capacitors and drive circuits. When dealing with main circuits structure, a low...
A simple current sharing control technique for the switching power supply is presented herein, which is based on the concept of the differential-mode transformer. This current-sharing structure is very simple as well as makes the efficiency relatively high at light load, and this is quite suitable for industrial applications with standby power considered. In addition, a synchronously-rectified (SR)...
This paper presents a novel two-stage electronic ballast for metal-halide (MH) lamps. The front stage is a single-switch boost and buck-boost integrated converter. The post stage is a half-bridge inverter driving the MH lamps with low-frequency square-wave current. The operating principle of the proposed topology is discussed. Also, constant power control is realized using the methodology employed...
The paper presents a developed switched reluctance wind power generator system. The block diagram and the elements of the system, such as generator, rotor position detector, excitation power converter and controller are described. The transient phase current analysis and the energy analysis of the switched reluctance generator are evaluated. The rotor position and the peak value of the phase current...
This paper has proposed an electric locomotive in coal mine drawn by the parallel drive system of the switched reluctance dual motors. The principles of the Switched Reluctance motor drive operated at four quadrants with the fixed conducting angles PWM control strategy, the scheme of the symmetrical traction at I-quadrant and at Ill-quadrant, and the scheme of the symmetrical regenerative braking...
The paper presented the double switched reluctance motors parallel drive system for the electrical traction in shearer. The system components, such as the switched reluctance motor, the main circuit of the power converter and the controller, were described. The control strategies of the closed-loop rotor speed control with PI algorithm and balancing the distribution of the loads with fuzzy logic algorithm...
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