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| Control Strategies of a New Hybrid Multilevel Inverter With Energy Storage |
| Rao Jianye, Li Yongdong |
| Tsinghua University Beijing 100084 China |
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Abstract Various multilevel inverter topologies have been proposed to enhance the performance of motor drive system. This paper presents a hybrid cascaded multilevel inverter scheme, in which the H-bridge inverter (main inverter) and the 3-level diode clamped inverter (conditioning inverter) are connected together to drive the motors, but only the main inverter needs DC voltage source. The conditioning inverter is supplied by super capacitors to store the braking energy of motors which will be reused. Through the simulations and experiments, this paper validates the feasibility of this new topology and the control strategy. This scheme has a wide range of practical applications, especially in the electric vehicle motor drive and marine propulsion system.
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Received: 30 May 2008
Published: 17 February 2014
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2009, Vol. 24 
