An advanced permanent magnet motor drive system for battery-powered electric vehicles

System Efficiency Improvement for Electric Vehicles Adopting a Permanent Magnet Synchronous Motor Direct Drive System

To improve the endurance mileage of electric vehicles (EVs), it is important to decrease the energy consumption of the Permanent Magnet Synchronous Motor (PMSM) drive system. This paper proposes a novel loss optimization control strategy named system efficiency improvement control which can optimize both inverter and motor losses. A nonlinear power converter loss model is built to fit the nonli...

Novel permanent magnet motor drives for electric vehicles

Drive System Design for a Permanent Magnet Motor with Independent Excitation Winding for an Electric Bicycle

This paper presents the implementation and characteristic analysis of a drive system for a three-phase permanent magnet motor with independent excitation winding that is applicable for electric bicycles. The design features improves the phase current waveform, output power, and torque by using advance angle control. This adjusts the phase angle of each phase current in relation to back EMF. In ...

Battery-powered, Electric-drive Vehicles Providing Buffer Storage for Pv Capacity Value

The use of batteries to provide storage for photovoltaic power has been evaluated in various contexts. In gridconnected applications, batteries can serve to provide firm peak-shaving for distributed PV installations. To date, however, the use of batteries from parked electricdrive vehicles (EDV) to provide buffer storage for PV capacity value has not been analyzed. The emerging vehicle to grid ...

Sensorless Speed Control with Initial Rotor Position Estimation for Surface Mounted Permanent Magnet Synchronous Motor Drive in Electric Vehicles

The accurate information of the initial rotor position is very critical for successful starting of the Surface-mounted Permanent Magnet Synchronous Motor (SPMSM). In order to solve the problems of low accuracy and unreliability in the conventional estimation strategy, in this paper, an improved initial rotor position estimation strategy without any position sensor for SPMSM at standstill is pro...