Motor drive system with flux regulated PM generator

A method of generating and controlling power for an alternating current (AC) motor with N phases by means of N controlled single-phase permanent magnet machines (PMMs), each with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of the PMM, comprising the steps of:

• rotating the PM rotor of each PMM at a velocity sufficient to develop a high frequency alternating current (HFAC) power output from the stator of each PMM;
• transforming the HFAC output from each PMM to produce a variable low frequency alternating current (AC) motor control output for each respective phase of the motor;
• sensing desired motor control parameters for each respective phase of the motor;
• generating a respective variable frequency AC control signal for each PMM responsive to the sensed parameters for a respective phase of the motor;
• and
• applying the variable frequency AC control signal to the magnetic flux diverter circuit for its respective PMM to control the motor control output for the respective phase of the motor.

A method of generating and controlling power for an alternating current (AC) motor with N phases by means of one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of the PMM, comprising the steps of:

• rotating the PM rotor at a velocity sufficient to develop a high frequency alternating current (HFAC) power output from the stator;
• transforming the HFAC output to produce a variable low frequency alternating current (AC) motor control output with N phases for the motor;
• sensing desired motor control parameters for each respective phase of the motor;
• generating a control signal responsive to the sensed parameters;
• and
• applying the control signal to the magnetic flux diverter circuit of the PMM to control the N phase motor control output.