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Recently, the problem of global warming and environmental deterioration, depletion of fossil fuel are remarkable, and the method of power generation and energy conversion with efficient using the natural energy is proposed. This technology will be quickly commercialized in future and the popularization is widely expected for the reduction of CO2. In this paper, new single phase inverter circuit which...
This paper presents a one stage circuit topology for a double buck chopper type single phase PFC converter with active power filtering function in a utility AC grid side and DC output power quality, which can realize much smaller in reactor size and lighter in its weight, along with two unique channel control schemes. The main advantageous point of the newly-proposed PFC converter includes that the...
A method and circuit for pulse width modulation (PWM) control of a buck-boost DC-DC converter used in energy harvesting for powering ultra low power sensor systems from vibrations is presented. The impedance of the transducer, the environmental parameters where the system is deployed, and the load to be driven necessitate an adaptive DC-DC converter. The circuit used to control the gate of the switching...
The brushless DC motor (BLDC) has been widely used in industrial applications because of its low inertia, fast response, high power density, high reliability, and maintenance-free reputation. They are usually supplied by a hard switching PWM inverter, with rather high switching loss. Therefore large heat-sinks are required for dissipation of this switching loss which increase the volume and weight...
Based on control type soft switching, an interleaved three-phase bidirectional DC/DC converter for high voltage high power applications is presented. The converter main circuit uses the interleaved three-phase bidirectional DC/DC topology and takes use of the three-phase complementary PWM control to implement soft switching condition. The circuit principles, the working modes and control type soft...
In this paper, a novel common-source type boost-forward single-stage PFC topology was proposed. By adding a second wind to the transformer, and using two active-clamp switches connected in common-source type, an active-clamp ZVS (zero voltage switching) could be obtained with a simple PWM control and output voltage feedback. The proposed topology was experimentally verified through the construction...
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