This paper proposes a circuit that combines the class E inverter with DC-DC converter so as to provide dual controllable outputs. This study is motivated because the industrial equipment often needs different voltage sources to operate, yet with an inadvertent choice of parameters in the isolated converters, the voltage quality is often highly affected. Therefore, by connecting an auxiliary power switch and a diode in series between class E inverter and DC-DC converter, a circuit with dual controllable outputs is suggested. Moreover, the input inductor and a power switch in the class E inverter are shared with DC-DC converter for the energy storage, hence reducing the number of elements when compared to published techniques. This proposed circuit is completed with hardware experiments performed under different load conditions. Test results support the practical values of this proposed circuit for supplying source applications. Index Term-Class E inverter, DC-DC converter, and controllable dual outputs.978-1-4799-7800-7/15/$31.00 ©2015 IEEE

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This paper proposes a charging control strategy for lithium-ion batteries. The method applies the post-charged steady-state battery voltage to justify the characteristics of durability for the lithium-ion battery, while the possibility of over-charging and under-charging conditions can be better avoided. In the method, the charging capacity, the charging security, and battery durability are all taken into consideration. Moreover, a wolf pack algorithm is applied to the charging process and searching for the optimal charging current. With the aid of this bio-inspired algorithm, the redundant energy in the charging can be saved, while the charge process can be more effectively controlled to reduce the time and cost. The method has been implemented on the laboratory prototype. Test results are compared with published techniques.

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