This paper presents a new sensorless control method that does not generate acoustic noises for interior permanent magnet synchronous motors (IPMSMs). The magnetic pole position estimation is based on an extended EMF, and a voltage injection synchronized with a PWM carrier. The carrier frequency is set high at 20 kHz, such that it is not audible by humans. A noise removal strategy is proposed. A dead-time compensation considering asymmetry and sampling time correction are used. A dead-time compensation voltage is added to the voltage command value based on the polarity of the phase current, and whether the PWM carrier is at the top or bottom. This compensates the effects of the dead-time without deteriorating the symmetry of the output pulse voltages. The current sampling timing is delayed to sample the current value at the proper timing because a Si inverter exhibits a switching delay. The effectiveness of the high-frequency carrier operations are verified by experimental results.