ANALYSIS OF PARALLEL SINGLE-PHASE INVERTERS OF LARGE CAPACITY

The vertical position of plasma in the HT-7U Tokamak is inherently unstable. In order to realize a stabilization system, the response rate of the power amplifier feeding the stabilization coils must be fast enough. In terms with the amplifier parameter requirements, research field belongs to single-phase inverters with low voltage and high current. This paper presents a circuit topology about parallel single-phase inverters based on the non-isolation mode. The topology not only can operate building blocks with non-synchronized control, but also realize redundancy to improve the system's efficiency and reliability by choosing the numbers of the input power supply reasonably. Finally, simulation and small power experiment results show that the proposed scheme is feasible and suitable.