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This paper presents current improvement for a 3⊘ bi-directional inverter with wide inductance variation. A bi-directional inverter fulfilling grid connection and rectification with power factor correction has been designed and implemented in the laboratory. With a digital predictive current control, the inverter can accommodate wide inductance variation, improving current distortion in high power...
This paper presents design and implementation of a 5 kW 1 φ bi-directional inverter with wide inductance variation. The bi-directional inverter can fulfill grid connection and power factor correction, in which inductor current can vary from 0 to 32A in one line cycle. This will result in wide inductance variation, around 7 times for an inductor constructed with an MPP core, and thus high current ripple...
This paper presents predictive digital controlled three phase bi-directional inverter with wide inductance variation. The bi-directional inverter can fulfill both grid connection and power factor correction. With a predictive digital control, the inverter is allowed to have a wide inductance variation, reducing core loss and size significantly. The proposed predictive digital control laws can be derived...
This paper presents design and implementation of a bi-directional inverter, including a high frequency transformer, a push-pull switch configuration at the dc side, a cycloconverter at the ac side, and a dsPIC controller. The dc/ac conversion is achieved with a phase-shifted control strategy. In addition, this topology also can achieve an ac/dc conversion with the PFC function. In this circuit, the...
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