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As the increase of current transformer knee point voltage, the conventional test method can not meet the requirements. In response to this situation, a prototype of instrument transformer tester based on low frequency source and compensation algorithm is developed. When using this device, it is possible to achieve testing at lower voltage. Due to the application of this tester, the flexibility and...
An output voltage ripple aware design of different voltage ramp signal of Voltage mode CCM Random Frequency Buck converter for conductive EMI reduction has been presented in this paper. Simulation and experimental results with a standard CMOS-0.35μm process verifies the proposed design and analysis. From experimental result, a carefully designed ramp can reduce output voltage ripple by more than 8...
His paper presents the design and implementation of parallel connected 400 Hz frequency converters that supply power to military equipment. Achieving tight steady-state and transient voltage regulations and high efficiency in inverters with high fundamental frequency presents great challenge both on the control system design and the power stage design. This study develops and implements a controller...
The output circuits of modern frequency converter are made up of switching elements that shape output voltage using pulse width modulation. For this reason the output voltage contains many harmonic components and thus the sampling frequency has to be sufficiently high. For accurate evaluation of efficiency of frequency converter both input and output power have to be measured from the same time window...
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