When dual-active-bridge dc-dc converter (DAB) with energy storage load operates in a wide voltage range and high dynamic condition, the mismatch of primary secondary side voltages will lead to current stress loss, dc-offset high-frequency ac link magnetic saturation components, which damage devices serious cases. Therefore, aiming at operation DAB range, triple-phase-shift (TPS) optimal control...

We describe an offset-canceling low-noise lock-in architecture for capacitive sensing. We take advantage of the properties of modulation and demodulation to separate the signal from the dc offset and use nonlinear multiplicative feedback to cancel the offset. The feedback also attenuates out-of-band noise and further enhances the power of a lock-in technique. Experimentally, in a 1.5m BiCMOS ch...

The bipolar low-voltage DC (LVDC) distribution system has become a prospective solution to better integration of renewables and improvement efficiency reliability. However, it also faces the challenge power voltage imbalance between two poles. To solve this problem, an interface converter with asymmetrical operating capabilities is applied in paper. steady-state models LVDC equipped grid connec...

The effects of DC offsets on four variations of the stochastic gradient algorithm are analyzed to determine the most appropriate algorithm for hardware implementation. The output mean squared error (MSE) performance in the presence of DC offsets is evaluated and compared with computer simulations for each of the algorithms assuming a Gaussian input distribution.

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Geomagnetically Induced Currents (GIC) are supposed to be a threat to power transformers worldwide. Recent surveys show correlation between solar storm activities, the cause of GIC, and transformers failing within a relatively short time period. The scope of this contribution is to create and investigate a laboratory setup emulating GIC effects by injecting DC currents into a three phase power ...