The paper deals with power electronic two-phase propulsion system with IM/SMPM motors for electric vehicle drives applications. The proposed system consists of two-stage converter comprises: resonant LLC converter with AC output, two-phase matrix converter commutated by HF AC input voltage, and two-phase induction/synchronous motors.Such a system with AC interlink, in comparison with currently used conventional system configurations features a good efficiency of electronic converters (due to soft switching of both converters) and also good torque-speed characteristics of two-phase AC motors. Results of simulation compared to experimental verification carried-out ones are in good accordance between them.
POSSIBILITIES OF A TWO-PHASE POWER CONVERTER IN ELECTRIC DRIVES FOR TRANSPORT APPLICATIONS
Abstract
The article concerns the application of a two-phase power converter in drives with an induction motor or a permanent magnet synchronous motor (IM/PMSM) for transport devices. This system consists of: a resonant LLC converter with an AC output, a two-phase matrix converter commutated by a high-frequency AC input voltage, and a two-phase induction/synchronous motor.
The proposed system is characterized by a smaller number of semiconductor devices, higher efficiency of power converters, and good mechanical characteristics of two-phase AC motors compared to conventional systems. The simulation results and their verification based on laboratory results show good accordance.
1. INTRODUCTION – BASIC PRINCIPLE OF TWO-PHASE MOTOR PROPULSION SYSTEM
1.1 Why two-phase propulsion electronic system?
Classical electric drive for electric vehicle with AC motors (e.g. Toyota Prius [1]) is shown in Fig. 1. (…)
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Source: Logistyka Magazine