Abstract: A phase-shifted full-bridge DC/DC converter supported by the patent number U.S. Pat. No. 10,050,544B2 cancels the controllable saturation inductor LK and replaces the CDR buffer circuit with the energy storage capacitor CS, resulting in a TC zero composed of the transformer T1 and the energy storage capacitor CS as core components. Current commutation, seamless docking soft switching battery charger. The mirror method is used to modify it to form a CTC and TC+TC bidirectional charger. The maintenance and switching of the charging direction only need to use a set of triggers and rely on the difference in battery voltage on both sides to complete the task autonomously.

Abstract: There is presented a system for estimating a market value of a private company. The system includes a processor, a query system, a database and a memory. The processor is configured to run a machine learning algorithm for computing a valuation coefficient. The query system is adapted to retrieve financial data of the private company from a first data source; and to retrieve training data for training the machine learning algorithm from a second data source. The database is configured to store the financial data and the training data. The memory stores instructions to cause the processor to train the machine learning algorithm using the training data, to compute the valuation coefficient; and to compute a valuation of the private company based on the financial data and the valuation coefficient.

Abstract: A ultra-high power ZVS+ZCS integrated soft switching DC/DC converter is disclosed, which adopts a phase shifted full bridge ZVS (zero voltage switching) DC/DC converter circuit. A saturation inductance Lk=Lk1+Lk2 controlled by a load current is series connected to a primary side of a high permeability ring transformer. A RCD buffer circuit for ZCS (zero voltage switching) current zero-crossing switching off is connected to a secondary side of the transformer. When a lead arm commutates, a refringence of a load current is blocked; the ZVS (zero voltage switching) is ensured; exciting current disappears; a lag arm realizes ZCS zero current commutating. The controlled inductance LK assists to establish a corresponding load refringenced current and the exiting current and recovers electromagnetic induction; The RCD buffer circuit softens the reverse current of bridge rectifier and oscillations caused by the leakage inductance on secondary side of the transformer and the buffer capacitor are attenuated.

Abstract: A ultra-high power ZVS+ZCS integrated soft switching DC/DC converter is disclosed, which adopts a phase shifted full bridge ZVS (zero voltage switching) DC/DC converter circuit. A saturation inductance Lk=Lk1+Lk2 controlled by a load current is series connected to a primary side of a high permeability ring transformer. A RCD buffer circuit for ZCS (zero voltage switching) current zero-crossing switching off is connected to a secondary side of the transformer. When a lead arm commutates, a refrigence of a load current is blocked; the ZVS (zero voltage switching) is ensured; exciting current disappears; a lag arm realizes ZCS zero current commutating. The controlled inductance LK assists to establish a corresponding load refrigenced current and the exiting current and recovers electromagnetic induction; The RCD buffer circuit softens the reverse current of bridge rectifier and oscillations caused by the leakage inductance on secondary side of the transformer and the buffer capacitor are attenuated.