Aiming at the singlephase open circuit fault of fivephase permanent magnet brushless motor for electric vehicle, a faulttolerant control strategy based on asymmetric space vector pulse width modulation control strategy was proposed. The design of a new type of fault tolerant control was divided into two parts, the five phase permanent magnet brushless motor drive system for open circuit voltage vector relationship under fault was analyzed, and then the space vector modulation algorithm was improved, which in a sector switch state of asymmetric waveform as output. The asymmetric space pulse width vector modulation could reduce the current total harmonic distribution and torque ripple of normal phases. Based on the experimental platform, the experimental results showed that the new faulttolerant adjustable achieved low torque ripple during system failure and kept good dynamic performance.